CN108975535B - Recovery system and method for shale gas flowback fracturing test - Google Patents
Recovery system and method for shale gas flowback fracturing test Download PDFInfo
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- CN108975535B CN108975535B CN201810847876.8A CN201810847876A CN108975535B CN 108975535 B CN108975535 B CN 108975535B CN 201810847876 A CN201810847876 A CN 201810847876A CN 108975535 B CN108975535 B CN 108975535B
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- 238000011084 recovery Methods 0.000 title claims abstract description 146
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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- Environmental & Geological Engineering (AREA)
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- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treating Waste Gases (AREA)
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Abstract
The invention provides a recovery system and a method for shale gas flowback fracturing test, wherein the recovery system comprises: the system comprises a Christmas tree arranged at the wellhead of a shale gas well, a double-recovery subsystem of which the input end is connected to the Christmas tree, a sewage pool, a combustion pool, a liquid recovery tank and a gas recovery pipe network; each output end of the double-recovery subsystem is respectively connected with the sewage pool, the combustion pool, the liquid recovery tank and the gas recovery pipe network; the dual-recovery subsystem is used for performing chip capturing, sand removing, buffering, filtering and recovery processing on liquid output by the Christmas tree in a shale gas flowback fracturing test, and is also used for performing buffering, separation, sand removing and recovery processing on gas output by the Christmas tree in the shale gas flowback fracturing test. The method can realize synchronous and efficient recovery of gas and liquid generated in the shale gas flowback fracturing test, and can meet the diversified and comprehensive requirements of product treatment in the shale gas flowback fracturing test.
Description
Technical field
The present invention relates to shale gas exploitation technical fields, and in particular to a kind of that the recycling that test is split in row pressure is returned for shale gas
System and method.
Background technique
Shale gas is that the ideal of conventional oil natural gas takes over the energy, and oil in place is huge.But since shale gas stores up
Low porosity and low permeability characteristic possessed by layer, also brings huge technological challenge for the effective exploitation to shale gas.Therefore, shale gas
It returns row pressure and splits test (i.e. using shale air water horizontal well fracturing technique carry out shale gas well fracturing ground test) and also become shale
Gas exploits the steps necessary of early period.In general, shale gas well can be exploited by the way of horizontal well fracturing.And for page
Rock gas well fracturing surface testing flow, then require convenient for disassembly and assembly, connection is simple and reliable, testing process equipment installation period is short, survey
It is high-efficient to study industry.In shale gas development process, often pressure break scale is big, the drain period is long.Especially in the row's of returning test, due to
It returns in bank fluid containing a large amount of gravel, tends to that the thorn of follow-up equipment or pipeline is caused to leak, so that a large amount of natural gas
It can not be directly entered gas line network, have no alternative but the mode for having to take direct burning and exhausting, this not only causes a large amount of resource
Waste usually influences local resident's work and rest simultaneously because directly burning can generate the environmental pollutions such as noise and strong light.Meanwhile it surveying
Environment would generally not only have been polluted but also result in the increase of pressure break cost as liquid waste processing by trying the fracturing fluid returned out, therefore, how
It row pressure is returned to shale gas splits the product in test and be recycled, it has also become what shale gas returned that row pressure splits in test important grinds
Study carefully project.
In the prior art, the way of recycling that test is split in row pressure is returned for shale gas, generally by cyclonic separation and step by step
The physical treatment mode of filtering also effectively remains remaining reusable in fracturing outlet liquid while removing impurity
Chemical agent, to realize the recycling for returning the fracturing fluid that row pressure is split in test to shale gas.
However, existing return the way of recycling that test is split in row pressure for shale gas, cannot achieve to fracturing fluid and natural gas
While recycle, and then be unable to satisfy shale gas return row pressure split test in product processing diversified demand.
Summary of the invention
For the problems of the prior art, the present invention provide it is a kind of for shale gas return row pressure split test recovery system and
Method can be realized and return the synchronous high-efficiency recycling that the gas and liquid that generate in test are split in row pressure to shale gas, can satisfy page
Rock gas returns the diversified and comprehensive demand that product processing in test is split in row pressure.
In order to solve the above technical problems, the present invention the following technical schemes are provided:
In a first aspect, the present invention provides and a kind of returns the recovery system that test is split in row pressure, the recovery system for shale gas
Include: that the production tree that shale gas well mouth is arranged in, input terminal are connected to the double back of the production tree and receive subsystem, and, sewage
Pond, combustion cell, liquid recovery tank and gas recovery pipe net；
It is gentle that each output end that the double back receives subsystem is separately connected the cesspool, combustion cell, liquid recovery tank
Body recycles pipe network；
The double back receives subsystem and splits the liquid exported in test through the production tree progress for returning row pressure to shale gas
Bits are caught, desanding processing, buffering, filters and is recycled, and, while being used to return shale gas row pressure to split in test and be adopted described in
The gas of oil tree output buffered, separated, desanding and recovery processing.
In one embodiment, the double back receive subsystem include: input terminal be connected to the production tree catch bits desanding module, defeated
Enter to hold to be connected to the continuous draining for catching bits desanding module and module is recovered by filtration, input terminal is connected to described catch and considers desanding module to be worth doing
Separate measurement module, input terminal be connected to the fine desanding module of gas of the separate measurement module；
It is described catch bits desanding module output end connect with the cesspool, for shale gas return row pressure split test in pass through
The liquid of the production tree output carries out catching bits and desanding processing；
The continuous draining be recovered by filtration the output end of module respectively with the cesspool, combustion cell and liquid recovery tank
Connection, for caught bits and desanding processing liquid buffered, filtered and be recycled, and, to through the production tree
The gas of output carries out buffered；
The output end of the separate measurement module is connect with the cesspool and combustion cell respectively, for returning row to shale gas
The gas that exports through the production tree and bits are caught and the liquid of desanding processing carries out separate measurement processing in pressure break test；
The output end of the fine desanding module of gas is connect with the gas recovery pipe net, for returning row pressure to shale gas
It splits in test and carries out desanding and recovery processing through separate measurement treated gas.
In one embodiment, the recovery system further include: include digital collection unit, material cell and chemical examination unit
Test supplementary module；
What the digital collection unit was connect with the production tree respectively catches bits desanding module, continuous draining and mould is recovered by filtration
Block, separate measurement module and the fine desanding module communication connection of gas, for catching bits desanding module, continuous draining and mistake to described
The operating index of filter recycling module, separate measurement module and the fine desanding module of gas is acquired；
The material cell returns row pressure for storing shale gas and splits test material, and, catch bits desanding module, continuous draining
With the setting material that module, separate measurement module and the fine desanding module of gas is recovered by filtration；
The chemical examination unit is used to carry out the test that the shale gas returns liquid and gas that row pressure is split in test.
In one embodiment, the bits desanding module of catching includes: that sequentially connected catch considers device, desander, diverter and power to be worth doing
Oil nozzle；
The bits device of catching is connect via connecting pipeline with the production tree；
The power oil nozzle is connect via blowout prevention pipeline with the cesspool；
The desander is connect via sediment outflow pipeline with the cesspool.
In one embodiment, the continuous draining and module is recovered by filtration includes: surge tank, the row's of returning tank and filter；
The input terminal of the surge tank is connect via connecting pipeline with the power oil nozzle；
One output end of the surge tank is connect via safety valve pipeline with the combustion cell, and the surge tank is another
One output end is connect via blowout prevention pipeline with the row's of returning tank；
The filter is connect via connecting pipeline with the liquid recovery tank；
The row's of returning tank is connect via connecting pipeline with the cesspool.
In one embodiment, the separate measurement module includes: for being throttled, being heated to liquid and isolated tester
Measure Integration Equipment；
The input terminal of the test and measuring Integration Equipment is connect with the diverter；
Each output end is connected to via test line and safety valve pipeline respectively in the test and measuring Integration Equipment
The combustion cell, and, the cesspool is connected to via tapping line.
In one embodiment, the fine desanding module of gas includes: gas desander；
The gas desander is connected between the safety valve pipeline and the gas recovery pipe net.
In one embodiment, the filter is more pocket type duplex strainers.
In one embodiment, the desander is 105MPa hydrocyclone.
It is described to catch bits desanding module, continuous draining and module, separate measurement module and gas is recovered by filtration in one embodiment
The input terminal of fine desanding module is connected to the production tree via ground safety valve respectively.
Second aspect, the present invention, which provides, a kind of returns the recovery method that test is split in row pressure, the recovery method for shale gas
The recovery system realization that test is split in row pressure is returned for shale gas using described, the recovery method includes:
It row pressure is returned to shale gas splits the liquid that exports through the production tree in test and carry out catching bits and desanding processing；
The liquid for being caught bits and desanding processing is buffered, filtered and is recycled, and, to defeated through the production tree
Gas out carries out buffered；
The liquid that row pressure splits the gas exported in test through the production tree and caught bits and desanding processing is returned to shale gas
Carry out separate measurement processing；
And it row pressure is returned to shale gas splits in test and carry out desanding and recovery processing through separate measurement treated gas.
In one embodiment, it is described to shale gas return row pressure split the liquid that is exported through the production tree in test catch bits and
Desanding processing, comprising: the liquid of production tree output is carried out to catch bits processing, obtains removing the liquid after drilling cuttings；
And desanding processing is carried out to the liquid after the removing drilling cuttings, it obtains after removing proppant and/or reservoir sand
Liquid after single treatment；
Liquid after the single treatment is exported to the cesspool.
In one embodiment, described pair caught bits and desanding processing liquid buffered, filtered and be recycled, and,
Buffered is carried out to the gas exported through the production tree, comprising:
Buffered is carried out respectively to liquid after the single treatment and the gas exported through the production tree；
The single treatment gas obtained after buffered is exported to combustion cell, and, by the liquid after buffered
Body carries out the row's of returning processing；
To treated that liquid is filtered through the row of returning, the recovered liquid for meeting preset recycling standard after filtering is obtained
Body and the secondary treatment liquid for not meeting the recycling standard；
The withdrawal liquid is exported to the liquid recovery tank, and, the secondary treatment liquid is exported to described
Cesspool.
In one embodiment, it is described to shale gas return row pressure split in test the gas that exports through the production tree and caught bits and
The liquid of desanding processing carries out separate measurement processing, comprising:
The liquid that row pressure splits the gas exported in test through the production tree and caught bits and desanding processing is returned to shale gas
Separate measurement processing is carried out, test gas, secondary treatment gas and treatment liquid three times are respectively obtained；
The test gas and secondary treatment gas are exported to the combustion cell；
And it treatment liquid will export three times to cesspool.
In one embodiment, it is described to shale gas return row pressure split in test through separate measurement treated gas carry out desanding and
Recovery processing, comprising:
The secondary treatment gas is subjected to desanding processing, obtains gas recovery；
And the gas recovery is exported to the gas recovery pipe net.
As shown from the above technical solution, the present invention provide it is a kind of the recovery system that test is split in row pressure is returned for shale gas, lead to
Cross the production tree that shale gas well mouth is set, input terminal be connected to the production tree double back receive subsystem, and, cesspool,
Combustion cell, liquid recovery tank and gas recovery pipe net；Each output end that the double back receives subsystem is separately connected the sewage
Pond, combustion cell, liquid recovery tank and gas recovery pipe net；The double back is received subsystem and is split in test for returning row pressure to shale gas
The liquid exported through the production tree carries out catching bits, desanding processing, buffering, filtering and recovery processing, and, while for page
Rock gas return row pressure split the gas that is exported through the production tree in test buffered, separated, desanding and recovery processing, can be realized
Page, which returns row pressure to rock gas and splits the synchronous high-efficiency of gas and liquid generated in test, to be recycled, and be can satisfy shale gas and is returned row pressure and splits survey
The diversified and comprehensive demand that product is handled in examination, and meet convenient for disassembly and assembly, connection in shale gas well fracturing ground test
It is simple and reliable, testing process equipment installation period is short, test jobs are high-efficient etc. requires, effectively reduce shale gas and return row pressure and split
The environmental pollutions such as the bring wasting of resources, noise and strong light are tested, and effectively reduce pressure break cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 returns the structural representation that the recovery system of test is split in row pressure for shale gas for one of the embodiment of the present invention
Figure.
It includes structural schematic diagram that double back receives the recovery system of each module in subsystem 2 that Fig. 2, which is of the invention,.
Fig. 3 is the structural schematic diagram of the of the invention recovery system for including ground safety valve 18.
It includes the structural schematic diagram for testing the recovery system of supplementary module that Fig. 4, which is of the invention,.
Fig. 5 is the structural schematic diagram of the test supplementary module 11 in recovery system of the invention.
Fig. 6 is the structural schematic diagram for catching bits desanding module 3 in recovery system of the invention.
Fig. 7 is continuous draining in recovery system of the invention and the structural schematic diagram of module 4 is recovered by filtration.
Fig. 8 is the structural schematic diagram of the separate measurement module 5 in recovery system of the invention.
Fig. 9 is the structural schematic diagram of the fine desanding module 6 of gas in recovery system of the invention.
Figure 10 is to return the structure that the recovery system of test is split in row pressure for shale gas in specific application example of the invention
Schematic diagram.
Figure 11 is the example schematic for catching bits desanding module 3 in specific application example of the invention.
Figure 12 is continuous draining in specific application example of the invention and the example schematic of module 4 is recovered by filtration.
Figure 13 is the example schematic of the separate measurement module 5 in specific application example of the invention.
Figure 14 is the example schematic of the fine desanding module 6 of gas in specific application example of the invention.
Figure 15 is that the process that one of the embodiment of the present invention returns the recovery method that test is split in row pressure for shale gas is shown
It is intended to.
Figure 16 is the flow diagram of step 100 in recovery method of the invention.
Figure 17 is the flow diagram of step 200 in recovery method of the invention.
Figure 18 is the flow diagram of step 300 in recovery method of the invention.
Figure 19 is the flow diagram of step 400 in recovery method of the invention.
Wherein, 1- production tree；2- double back receives subsystem；3- catches bits desanding module；301- catches bits device；302- desander；
303- diverter；304- power oil nozzle；4- continuous draining and module is recovered by filtration；401- surge tank；402- returns row's tank；403- mistake
Filter；5- separate measurement module；501- test and measuring Integration Equipment；The fine desanding module of 6- gas；601- gas desander；
7- cesspool；8- combustion cell；9- liquid recovery tank；10- gas recovery pipe net；11- tests supplementary module；111- digital collection list
Member；112- material cell；113- chemically examines unit；12- connecting pipeline；13- blowout prevention pipeline；14- sediment outflow pipeline；15- safety valve pipe
Line；16- test line；17- tapping line；18- ground safety valve.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The embodiment of the present invention provide it is a kind of the specific embodiment that the recovery system of test is split in row pressure is returned for shale gas,
Referring to Fig. 1, it is described for shale gas return row pressure and split the recovery system of test specifically include following content:
The production tree 1 of shale gas well mouth is set, input terminal be connected to the production tree 1 double back receive subsystem 2, with
And cesspool 7, combustion cell 8, liquid recovery tank 9 and gas recovery pipe net 10, the double back receive each output end of subsystem 2
It is separately connected the cesspool 7, combustion cell 8, liquid recovery tank 9 and gas recovery pipe net 10, the double back is received subsystem 2 and is used for
The liquid that row pressure is split through the production tree 1 output in test is returned to shale gas catch bits, desanding processing, buffering, filtering and return
Receipts processing, and, while being used to return shale gas the gas that row pressure is split through the production tree 1 output in test and being buffered, divided
From, desanding and recovery processing.
It is understood that the production tree 1 is the wellhead assembly that flowing well and machine-pumped oil well etc. are used to exploit petroleum.It is
The control of oil/gas well topmost and the capital equipment for adjusting production of hydrocarbons mainly have casing head, tubing head, oil recovery (gas) tree ontology
Three parts composition.The cesspool 7 is used to contain receives subsystem 2 treated that shale gas returns that the liquid in testing is split in row pressure through double back
Body, and the liquid especially fracturing fluid, or other liquid that need to be handled.The combustion cell 8 is used to receive son to through double back
Treated shale gas returns row pressure the splits gas in test the carries out burning and exhausting of system 2, the gas especially natural gas, can also
Think other gases that need to be handled.The liquid recovery tank 9 receives subsystem 2 through double back treated that shale gas returns row for containing
The liquid that can be recycled in pressure break test, treated through double back receipts subsystem 2 for 10 pairs of the gas recovery pipe net
Shale gas returns the gas that can be recycled that row pressure is split in test and is recycled, and the gas recovery pipe netting gear body refers to day
Right gas recycles pipe network.
In the foregoing description, it returns row pressure in shale gas to split in test (shale gas well fracturing ground test), usual shale gas
Hiding is all very thick, and horizontal section length is gradually increased in shale exploitation, and hydraulic fracturing construction can divide multistage 7 sections of realities on horizontal segment
It applies, pump note is carried out for an interval of shale gas reservoir every time, is all separated between every two sections.In addition the pressure break of each interval
Liquid, which can also be divided into multiple slugs in pumping, to be completed, it is intended to more complicated fracture network is formed in stratum.Ground installation pressure testing
Afterwards, it is pumped into a kind of " rock acid ", first to clean nearly well pollution；Second step is injection " drag reduction water " slug, due to being added to drop resistance
Agent, water energy are rapidly introduced into stratum with huge discharge；Later, start to inject the fine sand of a large amount of drag reduction water and low concentration, therebetween by
It gradually improves and adds sand concentration；Drag reduction water and coarse sand are injected when sand being added to close to an end, to keep nearly well fracture open and obtain nearly well height
Flow conductivity；Finally use subtracts Water-resistant well washing and returns row, removes the sand in equipment and pit shaft.After well-flushing, downhole tool is moved on to separately
One interval starts next stage pressing crack construction.In order to further increase operating efficiency, operating cost is reduced, also can be used in pressure break
Micro-seismic imaging and digital simulator monitor the characteristic of crack in every level-one shale reservoir, observe the growth track in crack, comment
Valence fracture height, length and orientation.
In addition, the fracturing fluid can mainly apply three kinds of liquid systems: liquid nitrogen is directly injected into, nitrogen filling foam and drag reduction
Water.Other than cost advantage, drag reduction water energy is pumped into a large amount of water and a small amount of proppant under high discharge capacity, can carry proppant and enter more
Deep fracture network, to form bigger fracture network and discouraged area.And for drag reduction water fracturing fluid, it generallys use small straight
Diameter (40/70 mesh) proppant need to consider smaller particle (100 mesh) proppant for the shale formation of intrinsic fracture development.
As can be seen from the above description, return the recovery system that test is split in row pressure provided by the present invention for shale gas, by will be double
Each output end of recycling subsystem is separately connected the cesspool, combustion cell, liquid recovery tank and gas recovery pipe net, with reality
The synchronous high-efficiency recycling that the gas and liquid that generate in test are split in row pressure now is returned to shale gas.
In a specific embodiment, referring to fig. 2, it returns row pressure for shale gas the present invention also provides described and splits test
Double back in recovery system receives the specific embodiment of subsystem 2, and the double back receives subsystem 2 and specifically includes following content:
Catch bits desanding module 3, the input terminal that input terminal is connected to the production tree 1 are connected to the company for catching bits desanding module 3
Continuous drain with module 4 is recovered by filtration, input terminal be connected to it is described catch the separate measurement module 5 for considering desanding module 3 to be worth doing, input terminal is connect
To the fine desanding module 6 of gas of the separate measurement module 5.
The output end for catching bits desanding module 3 is connect with the cesspool 7, is split in test for returning row pressure to shale gas
The liquid exported through the production tree 1 carries out catching bits and desanding processing.
The continuous draining is returned with the cesspool 7, combustion cell 8 and liquid respectively with the output end that module 4 is recovered by filtration
Closed cans 9 connect, for caught bits and desanding processing liquid buffered, filtered and be recycled, and, adopted described in warp
The gas of 1 output of oil tree carries out buffered.
The output end of the separate measurement module 5 is connect with the cesspool 7 and combustion cell 8 respectively, for shale gas
Row pressure is returned to split the gas through the production tree 1 output in test and caught at bits and the liquid progress separate measurement of desanding processing
Reason.
The output end of the fine desanding module 6 of gas is connect with the gas recovery pipe net 10, for returning to shale gas
Row pressure, which is split in test, carries out desanding and recovery processing through separate measurement treated gas.
As can be seen from the above description, the recovery system that test is split in row pressure is returned provided by the present invention for shale gas, by catching bits
Desanding module, continuous draining and the subdivision that module, separate measurement module and the fine desanding module of gas is recovered by filtration, according to very
The ground test operation of rule gas reservoir well, which will be undergone, bores each processes such as plug, well-flushing, the row of returning, test, pilot production, by ground testing system
Several unit functional modules for combining, decomposing and replacing are divided into, equipment is subjected to modularization, centralization design and is matched with integrated
Set, can greatly simplify installation and operation, the access of module is rapidly completed and withdraws from.
In a specific embodiment, referring to Fig. 3, of the invention returns the recovery system that test is split in row pressure for shale gas
In catch bits desanding module 3, continuous draining and module 4, separate measurement module 5 and the fine desanding module 6 of gas be recovered by filtration
Input terminal is connected to the production tree 1 via ground safety valve 18 respectively.To guarantee production tree 1 and catch bits desanding module 3, continuous
Drain and the connection reliability being recovered by filtration between module 4, separate measurement module 5 and the fine desanding module 6 of gas.
In a specific embodiment, referring to fig. 4 and Fig. 5, of the invention to return row pressure for shale gas and split returning for test
Also include test supplementary module 11 in receipts system, the test supplementary module 11 specifically includes following content:
Digital collection unit 111, material cell 112 and chemical examination unit 113.
What the digital collection unit 111 was connect with the production tree 1 respectively catches bits desanding module 3, continuous draining and filtering
Recycling module 4, separate measurement module 5 and the fine desanding module 6 of gas communicate to connect, for catching bits desanding module 3, company to described
Continuous drain is acquired with the operating index that module 4, separate measurement module 5 and the fine desanding module 6 of gas is recovered by filtration.
The material cell 112 returns row pressure for storing shale gas and splits test material, and, catch bits desanding module 3, continuous
Drain and the setting material that module 4, separate measurement module 5 and the fine desanding module 6 of gas is recovered by filtration.
The chemical examination unit 113 is used to carry out the test that the shale gas returns liquid and gas that row pressure is split in test.
It is understood that the digital collection unit 111, material cell 112 and chemical examination unit 113 specifically can divide
It is not arranged to set up digital collection room, material room and chemical examination room on the ground.
As can be seen from the above description, the recovery system that test is split in row pressure is returned provided by the present invention for shale gas, it can be into one
Step, which is improved, returns the accuracy and reliability that the recycling of test is split in row pressure for shale gas.
In a specific embodiment, referring to Fig. 6, row pressure is returned for shale gas split test the present invention also provides described
The specific embodiment for catching bits desanding module 3 in recovery system, the bits desanding module 3 of catching specifically include following content:
It is sequentially connected to catch bits device 301, desander 302, diverter 303 and power oil nozzle 304.
The bits device 301 of catching is connect via connecting pipeline 12 with the production tree 1.
The power oil nozzle 304 is connect via blowout prevention pipeline 13 with the cesspool 7.
The desander 302 is connect via sediment outflow pipeline 14 with the cesspool 7.
Wherein, the desander 302 is hydrocyclone, and in a kind of concrete example, the desander 302 can also have
Body is a kind of 105MPa hydrocyclone, and the 105MPa hydrocyclone is mainly by sequentially connected sand removing tank, swirl cylinder, integrated
It stores up sand mouth and silt box composition, 105MPa hydrocyclone is cut wellbore fluids by the way that swirl cylinder is arranged in high pressure sand removing tank
It introduces in swirl cylinder, generates the movement of combination helical whirlpool, using each phase medium density contrast of wellbore fluids, under the action of the centrifugal force realize
Separation, solid phase particles are deposited in cylinder lower part and enter silt box through device bottom sand removing hole, and treated, and fluid is discharged from top,
Therefore, by the way that the swirl cylinder inside 105MPa hydrocyclone is arranged in, high-voltage high-speed can be reduced and flow lower solid particle pair
The erosion and blocking of pipeline, and can effectively improve for shale gas return row pressure split the recovery system of test to high pressure, Gao Hansha,
Atm number, the adaptability for fluctuating the harsh operating condition such as violent.
It is understood that the input terminal for catching bits device 301 is connect via connecting pipeline 12 with the production tree 1, it is described to catch
The output end of bits device 301 is connect via connecting pipeline 12 with the desander 302, and the output end of the desander 302 is via even
Adapter tube line 12 is connect with the side of the diverter 303, and the other side of the diverter 303 is moved via connecting pipeline 12 with described
The input terminal of power oil nozzle 304 connects, and the output end of the power oil nozzle 304 is connect via blowout prevention pipeline 13 with the cesspool 7,
By-passing valve in the desander 302 is connect via sediment outflow pipeline 14 with the cesspool 7.
In addition, the connecting pipeline 12 is the pipeline for being connected to each equipment, the blowout prevention pipeline 13 is for being connected to
Each equipment and the sealing pipeline for preventing liquid outside splash under pressure, the sediment outflow pipeline 14 are each for being connected to
Equipment and the pipeline for being used to be connected to desander 302 and other equipment.
It is described to catch the liquid that bits device 301 exports the production tree and catch at bits that is, in removal process
Reason obtains removing the liquid after drilling cuttings；And the desander 302 carries out desanding processing to the liquid after the removing drilling cuttings,
Liquid after single treatment after obtaining removing proppant and/or reservoir sand；The power oil nozzle 304 is by liquid after the single treatment
Body is exported to the cesspool.
As can be seen from the above description, return the recovery system that test is split in row pressure provided by the present invention for shale gas, by catching
The specific setting for considering desanding module to be worth doing can be realized effectively and return the processing that the liquid that test generates is split in row pressure to shale gas.
In a specific embodiment, referring to Fig. 7, row pressure is returned for shale gas split test the present invention also provides described
Continuous draining in recovery system and the specific embodiment that module 4 is recovered by filtration, the continuous draining and are recovered by filtration module 4
Specifically include following content:
Surge tank 401, the row's of returning tank 402 and filter 403.
The input terminal of the surge tank 401 is connect via connecting pipeline 12 with the power oil nozzle 304.
One output end of the surge tank 401 is connect via safety valve pipeline 15 with the combustion cell 8, and the buffering
The another output of tank 401 is connect via blowout prevention pipeline 13 with the row's of returning tank 402.
The filter 403 is connect via connecting pipeline 12 with the liquid recovery tank 9.The filter 403 is more bags
Formula duplex strainer.
It is understood that more pocket type duplex strainers are referred to as duplex bag filter, the duplex-bag
Formula filter is made of the stainless steel filter of 2 two cylindrical bodies, and inner and outer surfaces polishing, top is equipped with pressure gauge, exhaust valve,
Pipe joint is connected using swollen conjunction, and through the 1.0MPa water pressure test, flexibly, the device structure is compact for three-way external screw line cock opening and closing,
Easy to operate, maintenance is simple.Purification suitable for removing various invisible solid impurities liquid.Two filters are handed over
For use, filter bag can be replaced in non-stop-machine situation, be suitable for long-term continuous production.Especially filter bag side leakage probability is small, energy
It accurately insures that filtering accuracy, and can quickly replace filter bag, filtering is substantially without supplies consumption, so that operating cost reduces.
The row's of returning tank 402 is connect via connecting pipeline 12 with the cesspool 7.
It is understood that the input terminal of the surge tank 401 connects via connecting pipeline 12 and the power oil nozzle 304
It connects, the top output port of the surge tank 401 is connect via safety valve pipeline 15 with the combustion cell 8, the surge tank 401
Bottom output end is connect via blowout prevention pipeline 13 with the input terminal of the row's of returning tank 402, the bottom output end of the row's of returning tank 402
It is connect via connecting pipeline 12 with the cesspool 7, another output end of the row's of returning tank 402 is via connecting pipeline 12 and filtering
The input terminal of device 403 connects, and the output end of the filter 403 is connect via connecting pipeline 12 with the liquid recovery tank 9.
That is, the surge tank 401 is to liquid after the single treatment and through the oil recovery in removal process
The gas of tree output carries out buffered respectively；The row's of returning tank 402 by the single treatment gas obtained after buffered export to
Combustion cell, and, the liquid after buffered is carried out the row of returning and handled by the row's of returning tank 402, obtains secondary treatment liquid；Institute
Stating 403 pairs of filter, treated that liquid is filtered through the row of returning, and obtains withdrawal liquid after filtering；The filter 403
The withdrawal liquid is exported to the liquid recovery tank 9, and, the row's of returning tank 402 exports the secondary treatment liquid
To the cesspool 7.
In addition, the safety valve pipeline 15 is the pipeline for being connected to each equipment and for conveying gas, the test
Pipeline 16 is the pipeline for being connected to each equipment and for conveying test liquid, and the tapping line 17 is each for being connected to
Equipment and the pipeline for being used to convey liquid.
As can be seen from the above description, the recovery system that test is split in row pressure is returned provided by the present invention for shale gas, by even
Continuous drain and the specific setting that module is recovered by filtration, can be realized to shale gas return row pressure split the liquid that test generates processing and
Recycling, and can be realized and the processing that the gas that test generates is split in row pressure is returned to shale gas.
In a specific embodiment, referring to Fig. 8, row pressure is returned for shale gas split test the present invention also provides described
The specific embodiment of separate measurement module 5 in recovery system, the separate measurement module 5 specifically include following content:
For being throttled, being heated to liquid and isolated test and measuring Integration Equipment 501.
The input terminal of the test and measuring Integration Equipment 501 is connect with the diverter 303.
Each output end is respectively via test line 16 and safety valve pipeline 15 in the test and measuring Integration Equipment 501
It is connected to the combustion cell 8, and, the cesspool 7 is connected to via tapping line 17.
It is understood that described for being throttled, being heated and isolated test and measuring Integration Equipment 501 to liquid
Can due to integrally disposed sequentially connected throttle valve, heat exchanger and separator group at.In a kind of concrete example, for pair
Liquid throttled, heated and isolated test and measuring Integration Equipment 501 is referred to as throttling heating separate measurement one
Disguise standby, which heats separate measurement Integration Equipment and be based on integrated design principle, and integrated fluid reducing pressure by regulating flow, liquid adds
Heat with gas-liquid separation and measure etc. it is multi-functional with it is integrated.Since low output is tested in shale gas well well yield, meeting treating capacity
It is required that while guarantee Security of test, throttled using two-stage, and pressure rating 105MPa, adapt to high voltage demands.Specifically,
The technical parameter of throttling heating separate measurement Integration Equipment is exemplified below:
(1) level-one choke pressure: 105MPa；
(2) two-step throttle pressure: 35MPa；
(3) disengagement chamber operating pressure: 9MPa；
(4) maximum gas treating capacity: 400,000m3/d；
(5) maximum liquid handling amount: 720m3/d；
(6) heat exchange amount: 2MMBTU/H；
(7) skid size: 8000*2450*2850mm.
That is, the test and measuring Integration Equipment 501 returns row pressure to shale gas and splits in test in removal process
It the gas that exports through the production tree and is caught bits and the liquid of desanding processing carries out separate measurement processing, respectively obtains test and use
Gas, secondary treatment gas and treatment liquid three times；First output end of the test and measuring Integration Equipment 501 will be described
Test is exported with gas to the combustion cell；Second output end of the test and measuring Integration Equipment 501 is by the test
It is exported with gas and secondary treatment gas to the combustion cell；The third of the test and measuring Integration Equipment 501 exports
End treatment liquid will be exported to cesspool three times.
As can be seen from the above description, the recovery system that test is split in row pressure is returned provided by the present invention for shale gas, by even
Continuous drain and the specific setting that module is recovered by filtration, can be realized to shale gas return row pressure split the processing for the liquid that test generates with
And it can be realized and the processing that the gas that test generates is split in row pressure is returned to shale gas.
In a specific embodiment, referring to Fig. 9, row pressure is returned for shale gas split test the present invention also provides described
The specific embodiment of the fine desanding module 6 of gas in recovery system, the fine desanding module 6 of gas specifically include as follows
Content:
Gas desander 601；The gas desander 601 can be duct type desander.
The gas desander 601 is connected between the safety valve pipeline 15 and the gas recovery pipe net 10.
It is understood that the input terminal of the gas desander 601 is via the safety valve pipeline 15 and the test
The output end connection of metering integrated equipment 501, the output end of the gas desander 601 via the safety valve pipeline 15 with
The gas recovery pipe net 10 connects.
That is, the gas desander 601 carries out the secondary treatment gas at desanding in removal process
Reason, obtains gas recovery；And the gas desander 601 exports the gas recovery to the gas recovery pipe net.
As can be seen from the above description, the recovery system that test is split in row pressure is returned provided by the present invention for shale gas, by gas
The specific setting of the fine desanding module of body can be realized and return the recycling that the gas that test generates is split in row pressure to shale gas.
To further explain this programme, the recovery system that test is split in row pressure is returned for shale gas the present invention also provides a kind of
Specific application example, referring to Figure 10, it is described for shale gas return row pressure split test recovery system specific application example tool
Body includes following content:
It to be undergone according to the ground test operation of unconventional gas reservoir well and bore each works such as plug, well-flushing, the row of returning, test, pilot production
Ground testing system is divided into several unit functional modules for combining, decomposing and replacing by sequence, by equipment carry out modularization,
Centralization design with integrate it is mating.It is described that for shale gas, to return the unit functional module that row pressure is split in the recovery system of test main
Include:
1) bits desanding module 3 is caught；
2) continuous draining and module 4 is recovered by filtration；
3) separate measurement module 5；
4) the fine desanding module 6 of gas；
5) supplementary module 11 is tested.
Referring to Figure 11, the bits desanding module 3 of catching includes: to catch bits device 301, desander 302 and power oil nozzle 304；Institute
1 output end of production tree stated is connect by a connecting pipeline 12 with bits 301 input terminal of device is caught, described to catch bits device 301 and production tree 1
Between connecting pipeline 12 be equipped with a ground safety valve 18, bits 301 output end of device of catching is by a connecting pipeline 12 and removing
The connection of 302 input terminal of sand device, 302 output end of desander are connect by a connecting pipeline 12 with 303 input terminal of diverter, institute
State 303 output end of diverter and connect with power oil nozzle 304 by a connecting pipeline 12,304 output end of power oil nozzle with prevent
Jet pipe line 13 connects, and the by-passing valve of the desander 302 is connect with sediment outflow pipeline 14.
Referring to Figure 12, the continuous draining includes: surge tank 401, recycling can 9 and is specially more with module 4 is recovered by filtration
The filter 403 of pocket type duplex strainer.The output end of the production tree 1 is inputted by a connecting pipeline 12 with bits device 301 is caught
End connection, the connecting pipeline 12 caught between bits device 301 and production tree 1 is equipped with a ground safety valve 18, described to catch bits device
301 output ends are connect by a connecting pipeline 12 with 302 input terminal of desander, and 302 output end of desander passes through a connection
Pipeline 12 is connect with 303 input terminal of diverter, and 303 output end of diverter passes through a connecting pipeline 12 and power oil nozzle 304
Connection, 304 output end of power oil nozzle are connect by a connecting pipeline 12 with 401 input terminal of surge tank, the surge tank 401
Top output port is connected by a safety valve pipeline 15 with combustion cell 8, and 401 lower output side of surge tank passes through blowout prevention pipeline
13 connect with 402 input terminal of the row of returning tank, and an output end of the row's of returning tank 402 passes through a connecting pipeline 12 and filter 403
Input terminal connects, and output end is connect by a connecting pipeline 12 with recycling can 9 at the filter 403, the row's of returning tank 402
Another output is connect by a connecting pipeline 12 with more 403 input terminals of pocket type duplex strainer, and the row's of returning tank 402 exports
End is connect by a connecting pipeline 12 with cesspool 7, and the desander 302 is connected by by-passing valve thereon with sediment outflow pipeline 14
It connects.
Referring to Figure 13, the separate measurement module 5 includes: throttling-heating-separation-test and measuring Integration Equipment
501.1 output end of production tree is connect by a connecting pipeline 12 with the input terminal for the by-passing valve for catching bits device 301, described to catch bits
Connecting pipeline 12 between the by-passing valve and production tree 1 of device 301 is equipped with a ground safety valve 18, the side for catching bits device 301
Port valve output end is connect by a connecting pipeline 12 with 302 input terminal of desander, and 302 output end of desander passes through a connection
Pipeline 12 is connect with 303 input terminal of diverter, and 303 output end of diverter passes through a connecting pipeline 12 and throttling-heating-point
From-test and measuring integrated apparatus input terminal connection, the throttling-heating-separation-test and measuring integrated apparatus first is defeated
Outlet is connect by test line 16 with combustion cell 8, and the second output terminal of the test and measuring Integration Equipment 501 passes through drain
Pipeline 17 is connected with cesspool 7, and the third output end of the test and measuring Integration Equipment 501 passes through safety valve pipeline 15 and combustion
It burns pond 8 to connect, the by-passing valve of the desander 302 is connect by sediment outflow pipeline 14 with cesspool 7.
Referring to Figure 14, the fine desanding module 6 of gas includes: duct type desander 302.It returns and is caught described in bank fluid process
Consider 301 input terminal of device to be worth doing, after catching bits processing, fluid is flowed to specially by a connecting pipeline 12 from catching bits 301 output end of device
The desander 302 of hydrocyclone subsequently enters the filter 403 and specially duct type of specially more pocket type duplex strainers
The gas desander 302 of desander, isolated liquid enter cesspool 7, and isolated gas entrance is specially natural
The gas recovery pipe net 10 of gas recycling pipe network.
Referring to Fig. 5, the test supplementary module 11 includes: the digital collection unit 111 of specially several forewinnings, is specially material
The material cell 112 of material room and the chemical examination unit 113 etc. for specially chemically examining room.
It is understood that equipment needed for shale gas well a well well completing test recovery process at least need include:
One desander 302, one catches bits device 301, by the integrated test and measuring Integration Equipment formed of throttle valve, heat exchanger and separator
501, a surge tank 401, the row's of returning tank 402, a digital collection unit 111, a material cell 112, one chemically examine unit 113, one
Desander 302, a filter 403 and a gas desander 601.Shale gas well a well well completing test technique mainly includes
Three processes bore plug flow journey, return drainage journey and test and measuring process.
Wherein, the brill plug flow journey are as follows:
1) fluid of drilling cuttings is mixed with by well head, and plug device is caught by pipeline arrival；
2) most of drilling cuttings in fluid will be removed by catching plug device；
3) fluid for removing drilling cuttings reaches throttle valve by a pipeline；
4) fluid flow to cesspool 7 from throttle valve.
Described returns drainage journey are as follows:
1) fluid of proppant, reservoir sand is mixed with by well head, and desander 302 is reached by a pipeline；
2) desander 302 will remove most of grains of sand and proppant in fluid；
3) fluid for removing the grains of sand and proppant reaches throttle valve by a pipeline；
4) fluid flow to surge tank 401 by a pipeline after throttle valve outflow；
5) fluid flow to the row's of returning tank 402 by relief line after the outflow of surge tank 401；
6) fluid from the row's of returning tank 402 outflow after, into filter 403 and gas desander 601, isolated liquid into
Enter cesspool 7, isolated gas enters gas recovery pipe net 10.
The test and measuring process are as follows:
1) fluid of sand grains is mixed with by well head, and desander 302 is reached by a pipeline；
2) desander 302 will remove most of sand grains in fluid；
3) fluid for removing sand grains reaches diverter 303 by a pipeline；
4) fluid flow to heat exchanger by a pipeline from diverter 303；
5) fluid reaches separator through over-heat-exchanger；
6) liquid after separator flow to cesspool 7 by a pipeline, and isolated gas is reached by pipeline
Natural gas recycles pipe network.
In addition, the desander 302 reduces height by the way that swirl cylinder is arranged inside it for 105MPa hydrocyclone
Press flow at high speed under erosion and blocking of the solid particle to pipeline, improve shale gas well completing test system against high voltage, Gao Hansha,
Atm number, the adaptability for fluctuating the harsh operating condition such as violent.And filter 403 is more pocket type duplex strainers, more pocket type duplexs
Filter can be realized three-level cleaning filtering, it is ensured that liquids recovery quality and quantity.The throttling-heating-separation-survey
Examination metering integrated equipment 501 can be realized the function that an equipment completes original conventional ground process a complete set of equipment.
As can be seen from the above description, returning the recovery system that test is split in row pressure provided by the present invention for shale gas, can be realized
Page, which returns row pressure to rock gas and splits the synchronous high-efficiency of gas and liquid generated in test, to be recycled, and be can satisfy shale gas and is returned row pressure and splits survey
The diversified and comprehensive demand that product is handled in examination, and meet convenient for disassembly and assembly, connection in shale gas well fracturing ground test
It is simple and reliable, testing process equipment installation period is short, test jobs are high-efficient etc. requires, effectively reduce shale gas and return row pressure and split
The environmental pollutions such as the bring wasting of resources, noise and strong light are tested, and effectively reduce pressure break cost.
The embodiment of the present invention, which provides, to be returned row pressure for shale gas described in a kind of application and splits what the recovery system of test was realized
It is a kind of to return the specific embodiment that the recovery method of test is split in row pressure for shale gas, it is described to be returned for shale gas referring to Figure 15
The recovery method that test is split in row pressure specifically includes following content:
Step 100: row pressure being returned to shale gas split the liquid that exports through the production tree in test and catch at bits and desanding
Reason.
Step 200: the liquid for being caught bits and desanding processing is buffered, filtered and is recycled, and, described in warp
The gas of production tree output carries out buffered.
Step 300: row pressure being returned to shale gas and splits the gas that exports through the production tree in test and is caught at bits and desanding
The liquid of reason carries out separate measurement processing.
Step 400: row pressure being returned to shale gas split in test and carried out at desanding and recycling through separate measurement treated gas
Reason.
As can be seen from the above description, returning the recovery method that test is split in row pressure provided by the present invention for shale gas, can be realized
The synchronous high-efficiency recycling that the gas and liquid that generate in test are split in row pressure is returned to shale gas.
In a specific embodiment, described to return row pressure for shale gas and split in the recovery method of test referring to Figure 16
Step 100 specifically include following content:
Step 101: the liquid of production tree output being carried out to catch bits processing, obtains removing the liquid after drilling cuttings.
Step 102: desanding processing being carried out to the liquid after the removing drilling cuttings, obtains removing proppant and/or reservoir sand
Liquid after single treatment afterwards.
Step 103: liquid after the single treatment is exported to the cesspool.
It is understood that it is described for shale gas return that row pressure splits in the recovery system of test described to catch bits device 301 right
The liquid of the production tree output carries out catching bits processing, obtains removing the liquid after drilling cuttings；And described 302 pairs of institutes of desander
It states the liquid after removing drilling cuttings and carries out desanding processing, liquid after the single treatment after obtaining removing proppant and/or reservoir sand；Institute
Power oil nozzle 304 is stated to export liquid after the single treatment to the cesspool.
As can be seen from the above description, the recovery method that test is split in row pressure is returned provided by the present invention for shale gas, by catching bits
The processing mode of desanding can be realized effectively and return the processing that the liquid that test generates is split in row pressure to shale gas.
In a specific embodiment, described to return row pressure for shale gas and split in the recovery method of test referring to Figure 17
Step 200 specifically include following content:
Step 201: liquid after the single treatment and the gas exported through the production tree are carried out at buffering respectively
Reason.
Step 202: the single treatment gas obtained after buffered is exported to combustion cell, and, will be through buffering at
Liquid after reason carries out the row's of returning processing, obtains secondary treatment liquid.
Step 203: to treated that liquid is filtered through the row of returning, obtaining the recycling obtained after filtering after filtering
Liquid.
Step 204: the withdrawal liquid is exported to the liquid recovery tank, and, the secondary treatment liquid is defeated
Out to the cesspool.
It is understood that described, for shale gas, to return the surge tank 401 that row pressure is split in the recovery system of test right
Liquid and the gas exported through the production tree carry out buffered respectively after the single treatment；The row's of returning tank 402 will be through slow
Obtained single treatment gas is exported to combustion cell after punching processing, and, the row's of returning tank 402 is by the liquid after buffered
The row's of returning processing is carried out, secondary treatment liquid is obtained；Treated that liquid is filtered through the row of returning for 403 pairs of the filter, obtains
Withdrawal liquid after filtering；The filter 403 exports the withdrawal liquid to the liquid recovery tank 9, and, it is described
The row's of returning tank 402 exports the secondary treatment liquid to the cesspool 7.
As can be seen from the above description, the recovery method that test is split in row pressure is returned provided by the present invention for shale gas, by continuous
Drain and the processing mode being recovered by filtration can be realized and return the processing and recycling that the liquid that test generates is split in row pressure to shale gas,
And it can be realized and the processing that the gas that test generates is split in row pressure is returned to shale gas.
In a specific embodiment, described to return row pressure for shale gas and split in the recovery method of test referring to Figure 18
Step 300 specifically include following content:
Step 301: row pressure being returned to shale gas and splits the gas that exports through the production tree in test and is caught at bits and desanding
The liquid of reason carries out separate measurement processing, respectively obtains test gas, secondary treatment gas and treatment liquid three times.
Step 302: the test gas and secondary treatment gas are exported to the combustion cell.
Step 303: treatment liquid will export three times to cesspool.
It is understood that it is described for shale gas return row pressure split in the recovery system of test the test and measuring one
Disguise standby 501 pairs of shale gas and returns the liquid that row pressure splits the gas exported in test through the production tree and caught bits and desanding processing
Separate measurement processing is carried out, test gas, secondary treatment gas and treatment liquid three times are respectively obtained；The test and measuring one
First output end of body makeup standby 501 exports the test to the combustion cell with gas；The test and measuring integration
Second output end of equipment 501 exports the test gas and secondary treatment gas to the combustion cell；The survey
The third output end of examination metering integrated equipment 501 treatment liquid will be exported to cesspool three times.
As can be seen from the above description, the recovery method that test is split in row pressure is returned provided by the present invention for shale gas, by continuous
Drain and the processing mode being recovered by filtration, can be realized to shale gas return row pressure split the liquid that test generates processing and can
It realizes and the processing that the gas that test generates is split in row pressure is returned to shale gas.
In a specific embodiment, described to return row pressure for shale gas and split in the recovery method of test referring to Figure 19
Step 400 specifically include following content:
Step 401: the secondary treatment gas being subjected to desanding processing, obtains gas recovery；
Step 402: the gas recovery is exported to the gas recovery pipe net.
It is understood that described row pressure is returned for shale gas split the gas desander in the recovery system of test
The secondary treatment gas is carried out desanding processing by 601, obtains gas recovery；And the gas desander 601 described will return
Getter body is exported to the gas recovery pipe net.
As can be seen from the above description, returning the recovery method that test is split in row pressure provided by the present invention for shale gas, pass through gas
The processing mode of fine desanding, can be realized and return the recycling that the gas that test generates is split in row pressure to shale gas.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for hardware+
For program class embodiment, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to side
The part of method embodiment illustrates.
It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims
It is interior.In some cases, the movement recorded in detail in the claims or step can be come according to the sequence being different from embodiment
It executes and desired result still may be implemented.In addition, process depicted in the drawing not necessarily require show it is specific suitable
Sequence or consecutive order are just able to achieve desired result.In some embodiments, multitasking and parallel processing be also can
With or may be advantageous.
Although this application provides the method operating procedure as described in embodiment or flow chart, based on conventional or noninvasive
The labour for the property made may include more or less operating procedure.The step of enumerating in embodiment sequence is only numerous steps
One of execution sequence mode, does not represent and unique executes sequence.It, can when device or client production in practice executes
To execute or parallel execute (such as at parallel processor or multithreading according to embodiment or method shown in the drawings sequence
The environment of reason).
Although this specification embodiment provides the method operating procedure as described in embodiment or flow chart, based on conventional
It may include either more or less operating procedure without creative means.The step of being enumerated in embodiment sequence be only
One of numerous step execution sequence mode does not represent and unique executes sequence.Device or end product in practice is held
When row, can be executed according to embodiment or method shown in the drawings sequence or it is parallel execute (such as parallel processor or
The environment of multiple threads, even distributed data processing environment).The terms "include", "comprise" or its any other change
Body is intended to non-exclusive inclusion, so that process, method, product or equipment including a series of elements are not only wrapped
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, product
Or the element that equipment is intrinsic.In the absence of more restrictions, being not precluded is including process, the side of the element
There is also other identical or equivalent elements in method, product or equipment.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ",
The description of " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, structure, material
Or feature is contained at least one embodiment or example of this specification embodiment.In the present specification, to above-mentioned term
Schematic representation be necessarily directed to identical embodiment or example.Moreover, description specific features, structure, material or
Person's feature may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, in not conflicting feelings
Under condition, those skilled in the art by different embodiments or examples described in this specification and different embodiment or can show
The feature of example is combined.
The foregoing is merely the embodiments of this specification embodiment, are not limited to this specification embodiment.It is right
For those skilled in the art, this specification embodiment can have various modifications and variations.It is all in this specification embodiment
Any modification, equivalent replacement, improvement and so within spirit and principle, the right that should be included in this specification embodiment are wanted
Within the scope of asking.
Claims (8)
1. a kind of return the recovery system that test is split in row pressure for shale gas, which is characterized in that the recovery system includes: that setting exists
The double back that the production tree of shale gas well mouth, input terminal are connected to the production tree receives subsystem, and, cesspool, combustion cell, liquid
Body recycling can and gas recovery pipe net；
The double back receive subsystem include: input terminal be connected to the production tree catch bits desanding module, input terminal is connected to this and catches
It considers the continuous draining of desanding module to be worth doing and module is recovered by filtration, input terminal is connected to the separate measurement mould for catching bits desanding module
Block, input terminal are connected to the fine desanding module of gas of the separate measurement module；
The output end for catching bits desanding module is connect with the cesspool, is split in test for returning row pressure to shale gas through described
The liquid of production tree output carries out catching bits and desanding processing；
The continuous draining connects with the cesspool, combustion cell and liquid recovery tank respectively with the output end that module is recovered by filtration
Connect, for caught bits and desanding processing liquid buffered, filtered and be recycled, and, to defeated through the production tree
Gas out carries out buffered；
The output end of the separate measurement module is connect with the cesspool and combustion cell respectively, is split for returning row pressure to shale gas
The gas that exports in test through the production tree and caught bits and the liquid of desanding processing carries out separate measurement processing；
The output end of the fine desanding module of gas is connect with the gas recovery pipe net, splits survey for returning row pressure to shale gas
Desanding and recovery processing are carried out through separate measurement treated gas in examination.
2. recovery system according to claim 1, which is characterized in that the recovery system further include: include that number is adopted
Collect unit, material cell and the test supplementary module for chemically examining unit；
Bits desanding module that the digital collection unit was connect with the production tree respectively catch, continuous draining and be recovered by filtration module,
Separate measurement module and the fine desanding module communication connection of gas, for catching bits desanding module, continuous draining and filtering to described
The operating index of recycling module, separate measurement module and the fine desanding module of gas is acquired；
The material cell returns row pressure for storing shale gas and splits test material, and, catch bits desanding module, continuous draining and mistake
Filter the setting material of recycling module, separate measurement module and the fine desanding module of gas；
The chemical examination unit is used to carry out the test that the shale gas returns liquid and gas that row pressure is split in test.
3. recovery system according to claim 1, which is characterized in that the bits desanding module of catching includes: sequentially connected
Catch bits device, desander, diverter and power oil nozzle；
The bits device of catching is connect via connecting pipeline with the production tree；
The power oil nozzle is connect via blowout prevention pipeline with the cesspool；
The desander is connect via sediment outflow pipeline with the cesspool.
4. recovery system according to claim 3, which is characterized in that the continuous draining includes: with module is recovered by filtration
Surge tank, the row's of returning tank and filter；
The input terminal of the surge tank is connect via connecting pipeline with the power oil nozzle；
One output end of the surge tank is connect via safety valve pipeline with the combustion cell, and the surge tank another
Output end is connect via blowout prevention pipeline with the row's of returning tank；
The filter is connect via connecting pipeline with the liquid recovery tank；The bottom output end of the row's of returning tank is via connection
Pipeline is connect with the cesspool, and another output end of the row's of returning tank is connected via the input terminal of connecting pipeline and filter.
5. recovery system according to claim 3, which is characterized in that the separate measurement module includes: for liquid
It throttled, heated and isolated test and measuring Integration Equipment；
The input terminal of the test and measuring Integration Equipment is connect with the diverter；
Each output end is connected to via test line and safety valve pipeline described respectively in the test and measuring Integration Equipment
Combustion cell, and, the cesspool is connected to via tapping line.
6. recovery system according to claim 5, which is characterized in that the fine desanding module of gas includes: that gas removes
Sand device；
The gas desander is connected between the safety valve pipeline and the gas recovery pipe net.
7. recovery system according to claim 4, which is characterized in that the filter is more pocket type duplex strainers.
8. recovery system according to claim 3, which is characterized in that the desander is 105MPa hydrocyclone.
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| CN201810847876.8A CN108975535B (en) | 2018-07-27 | 2018-07-27 | Recovery system and method for shale gas flowback fracturing test |
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| CN109488278A (en) * | 2018-12-20 | 2019-03-19 | 中国石油集团川庆钻探工程有限公司 | Grading desanding process for shale gas well |
| CN112096368B (en) * | 2020-10-09 | 2023-10-10 | 中国石油天然气集团有限公司 | Unconventional cluster well group oil gas metering and separating system and method thereof |
| CN115875020A (en) * | 2023-01-05 | 2023-03-31 | 四川涪瑞威尔能源技术有限公司 | Return test system and method |
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| CN202530030U (en) * | 2012-02-16 | 2012-11-14 | 中国石油天然气股份有限公司 | Natural gas well flowback fracturing fluid recycling system |
| CN204039173U (en) * | 2014-07-31 | 2014-12-24 | 北京神州卓越石油科技有限公司 | A kind of mobile modularized fractured return drainage liquid recovery processing apparatus |
| CN104355468B (en) * | 2014-10-29 | 2016-08-17 | 李磊 | A kind of fracturing outlet liquid modularity Integrated Processing System |
| CN104649471B (en) * | 2014-12-31 | 2016-08-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Fracturing flowback fluid treatment and recycling process |
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