CN107288600B - Device and process for compositely driving oil field to increase yield by tail gas reinjection and waste heat utilization - Google Patents
Device and process for compositely driving oil field to increase yield by tail gas reinjection and waste heat utilization Download PDFInfo
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- CN107288600B CN107288600B CN201710665243.0A CN201710665243A CN107288600B CN 107288600 B CN107288600 B CN 107288600B CN 201710665243 A CN201710665243 A CN 201710665243A CN 107288600 B CN107288600 B CN 107288600B
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- 239000007789 gas Substances 0.000 title claims abstract description 112
- 239000002918 waste heat Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000007924 injection Substances 0.000 claims abstract description 52
- 238000002347 injection Methods 0.000 claims abstract description 52
- 238000010438 heat treatment Methods 0.000 claims abstract description 44
- 241000191291 Abies alba Species 0.000 claims description 30
- 238000004519 manufacturing process Methods 0.000 claims description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 230000010412 perfusion Effects 0.000 claims description 8
- 239000003345 natural gas Substances 0.000 claims description 6
- 230000000638 stimulation Effects 0.000 claims description 5
- 239000008236 heating water Substances 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 21
- 235000004507 Abies alba Nutrition 0.000 description 19
- 239000010779 crude oil Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a device and a process for compositely driving oil field yield increase by tail gas reinjection and waste heat utilization, relates to the technical field of oil field oil extraction, and solves the technical problem of providing a device and a process for compositely driving oil field yield increase by tail gas reinjection and waste heat utilization, which realize intensive utilization of resources and are pollution-free. The technical scheme adopted by the invention is as follows: the tail gas waste heat of the engine and the heating furnace preheats water injection, then the water injection is heated by the heating furnace, and then hot water injection is carried out, so that the full utilization of heat energy is realized; the valve of the device is adjusted to realize cold water filling; the tail gas of the engine and the heating furnace is cleaned in a closed mode through the first tail gas cleaner and the second tail gas cleaner respectively, and then is pressurized and poured through the gas compressor, so that pressurization and gas injection are realized, all the tail gas is guaranteed to be completely recovered, the compound driving yield increase is realized, the environment is protected, no pollution is caused, and resources are fully utilized.
Description
Technical Field
The invention relates to the technical field of oil extraction in oil fields, in particular to a set of composite drive oil field production increasing device and process which preheats water injection by using waste heat of a natural gas engine and a heating furnace, injects water by using heat energy, cleans tail gas in a closed manner, and performs pressure-boosting injection.
Background
After the oil field is put into development, the energy of the oil layer is continuously consumed along with the increase of the oil extraction time, so that the pressure of the oil layer is continuously reduced, underground crude oil is greatly degassed, the viscosity is increased, the yield of the oil well is greatly reduced, even the jet stop and the production stop are caused, and a large amount of underground residual dead oil cannot be extracted. In order to compensate the underground deficit caused by the production of crude oil, maintain or improve the pressure of an oil layer, realize high and stable yield of an oil field and obtain higher recovery ratio, cold water or injection and perfusion must be carried out on the oil field.
At present, the oil field is filled with a high-pressure water injection pump matched with a boiler for heating, a large amount of heat can be taken away by discharged flue gas, air is polluted, intensive utilization of resources is not realized, and environmental pollution is caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a pollution-free tail gas reinjection and waste heat utilization combined drive oilfield production increasing device which realizes the intensive utilization of resources.
The technical scheme adopted by the invention for solving the technical problems is as follows: the tail gas reinjection and waste heat utilization combined drive oilfield production increasing device comprises a generator, a heating furnace, a gas compressor and a high-pressure water injection pump; the tail gas outlet of the generator is connected with a first heat exchanger, a water channel is arranged in the first heat exchanger, the gas outlet of the first heat exchanger is connected with a first tail gas cleaner, the gas outlet of the heating furnace is connected with a second heat exchanger, the water channel is arranged in the second heat exchanger, the gas outlet of the second heat exchanger is connected with a second tail gas cleaner, the outlets of the first tail gas cleaner and the second tail gas cleaner are respectively connected to the gas compressor, and the tail end of an outlet pipeline of the gas compressor is provided with a connector which can be connected with a throttling valve of a Christmas tree;
the inlet of the high-pressure water injection pump is connected with the water tank, the outlet of the high-pressure water injection pump is connected with the No. 2 valve, the outlet of the No. 2 valve is provided with a tee joint, the two branch pipes of the tee joint are respectively provided with the No. 3 valve and the No. 7 valve, and the tail end of the outlet pipeline of the No. 7 valve is provided with a joint which can be connected with a throttling valve of a Christmas tree;
the outlet of the 3# valve is provided with a tee joint, two branch pipes of the tee joint are respectively provided with a 4# valve and a 5# valve, and the outlet of the 4# valve is connected into the heating furnace; the outlet of the No. 5 valve is provided with a tee joint, two branch pipes of the tee joint are respectively provided with a No. 11 valve and a No. 12 valve, the outlet of the No. 11 valve is connected to the water channel inlet of the second heat exchanger, and the water channel outlet of the second heat exchanger is connected into the heating furnace; an outlet of the 12# valve is connected to a water channel inlet of the first heat exchanger, and a water channel outlet of the first heat exchanger is connected into the heating furnace; the tail end of the outlet pipeline of the heating furnace is provided with a joint which can be connected with a throttling valve of a Christmas tree.
Further, the method comprises the following steps: set up 14# valve and 13# valve on the outlet pipeline of first tail gas cleaner and second tail gas cleaner respectively, the export of 14# valve and 13# valve joins the back through the tee bend and then is connected to gas compressor, and gas compressor's export sets up the branch pipe, sets up the valve on the branch pipe respectively, and the end of branch pipe sets up the joint that can link to each other with the choke valve of production tree respectively.
Further, the method comprises the following steps: the water tank is an elevated water tank, and a 1# valve is arranged between the elevated water tank and the high-pressure water injection pump.
Further, the method comprises the following steps: a10 # valve is arranged on a water channel outlet pipeline of the first heat exchanger, a 9# valve is arranged on a water channel outlet pipeline of the second heat exchanger, an outlet of the 9# valve and an outlet of the 10# valve are converged through a tee joint, then a 6# valve is arranged, and an outlet of the 6# valve and an outlet of the 4# valve are converged through a tee joint and then connected into the heating furnace.
Further, the method comprises the following steps: set up 8# valve on the outlet pipeline of heating furnace, the export of 7# valve and the export of 8# valve converge through the tee bend, set up the joint that can link to each other with the choke valve of production tree again.
Specifically, the generator is a natural gas generator.
Further, the method comprises the following steps: an outlet pipeline of the gas compressor is connected with a tee joint, two branch pipes of the tee joint are respectively provided with a No. 15 valve and a No. 16 valve, and the tail ends of the No. 15 valve and the No. 16 valve are respectively provided with a joint which can be connected with a throttling valve of a Christmas tree;
the outlet of the 7# valve and the outlet of the 8# valve are converged by a tee joint and then connected with the tee joint, the two branch pipes of the latter tee joint are respectively provided with a 17# valve and an 18# valve, and the tail ends of the 17# valve and the 18# valve are respectively provided with a connector which can be connected with a throttling valve of a Christmas tree.
The invention also provides a process for driving the oil field to increase the yield by the combination of tail gas reinjection and waste heat utilization, the oil field is driven to increase the yield by any one of the devices for driving the oil field to increase the yield by the combination of tail gas reinjection and waste heat utilization, and the process comprises cold water injection, hot water injection and pressurized gas injection, wherein:
the cold water perfusion is as follows: connecting a connector at the tail end of the 7# valve outlet pipeline with a throttling valve of the Christmas tree, opening the 2# valve and the 7# valve, closing the 3# valve, and then performing cold water injection;
the hot water perfusion is as follows: closing the 7# valve, opening the 2# valve, the 3# valve, the 4# valve, the 5# valve, the 11# valve and the 12# valve, injecting water, heating through the first heat exchanger and the second heat exchanger, then adding heat energy into the heating furnace, and finally injecting hot water through a throttling valve of the Christmas tree;
the pressurizing and gas injection comprises the following steps: and connecting a joint at the tail end of an outlet pipeline of the gas compressor with a throttling valve of the Christmas tree, and performing pressurization and gas injection operation through the throttling valve of the Christmas tree.
The beneficial effects of the invention are: in the device and the process for increasing the yield of the oil field by tail gas reinjection and waste heat utilization combined driving, a generator provides electric energy for the whole device, and after water injection is preheated by the tail gas waste heat of an engine and a heating furnace, the water is heated by the heating furnace, and finally heat energy water injection operation is carried out, so that the full utilization of heat energy is realized; the valve of the adjusting device can also realize cold water filling; the tail gas of the engine and the heating furnace is cleaned in a closed manner through a first tail gas cleaner and a second tail gas cleaner respectively, and pressurized gas injection is realized through pressure lifting and filling of a gas compressor; ensures that all tail gas is completely recycled and enters the operation flow, not only realizes the compound drive of water injection and gas injection to increase the yield, but also is environment-friendly and pollution-free, and fully utilizes resources.
Drawings
FIG. 1 is a schematic diagram of the device and process for tail gas reinjection and waste heat utilization combined drive oil field stimulation of the present invention;
parts, positions and numbers in the drawings: the system comprises a generator 1, a first heat exchanger 2, a first tail gas cleaner 3, a gas compressor 4, a heating furnace 5, a second heat exchanger 6, a second tail gas cleaner 7, a high-pressure water injection pump 8, a water tank 9, a Christmas tree 10 and a throttle valve 11;1# valve V-1, 2# valve V-2, 3# valve V-3, 4# valve V-4, 5# valve V-5, 6# valve V-6, 7# valve V-7, 8# valve V-8, 9# valve V-9, 10# valve V-10, 11# valve V-11, 12# valve V-12, 13# valve V-13, 14# valve V-14, 15# valve V-15, 16# valve V-16, 17# valve V-17, 18# valve V-18.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in figure 1, the device for increasing the yield of the oil field by tail gas reinjection and waste heat utilization combined driving comprises a generator 1, a heating furnace 5, a gas compressor 4 and a high-pressure water injection pump 8, wherein the generator 1 is a natural gas generator, and the generator converts natural gas energy into electric energy to provide the electric energy for the whole device. The tail gas outlet of generator 1 connects first heat exchanger 2, sets up the water course in the first heat exchanger 2, and the gas outlet of first heat exchanger 2 is connected to first tail gas cleaner 3, and first tail gas cleaner 3 is used for carrying out the closed cleanness to the tail gas that generator 1 produced.
The heating furnace 5 burns the natural gas, and the gas outlet of heating furnace 5 connects second heat exchanger 6, sets up the water course in the second heat exchanger 6, and the gas outlet of second heat exchanger 6 is connected to second tail gas cleaner 7, and second tail gas cleaner 7 is used for carrying out closed cleanness to the tail gas that heating furnace 5 produced. The outlet of the first tail gas cleaner 3 and the outlet of the second tail gas cleaner 7 are respectively connected to a gas compressor 4, and the tail end of the outlet pipeline of the gas compressor 4 is provided with a joint which can be connected with a throttle valve 11 of a Christmas tree 10.
The gas compressor 4 is used for pressurizing and filling the cleaned tail gas to realize pressurization and gas injection. In order to avoid the possible mutual interference between the outlet pipeline of the first exhaust gas cleaner 3 and the outlet pipeline of the second exhaust gas cleaner 7, a 14# valve V-14 and a 13# valve V-13 are respectively arranged on the outlet pipeline of the first exhaust gas cleaner 3 and the outlet pipeline of the second exhaust gas cleaner 7, and the outlets of the 14# valve V-14 and the 13# valve V-13 are converged by a tee joint and then connected to the gas compressor 4. The outlet of the gas compressor 4 is provided with branch pipes, the branch pipes are respectively provided with valves, and the tail ends of the branch pipes are respectively provided with a joint which can be connected with a throttling valve 11 of a Christmas tree 10.
As shown in figure 1, two well heads are provided, the outlet pipeline of the gas compressor 4 is connected with a tee joint, two branch pipes of the tee joint are respectively provided with a 15# valve V-15 and a 16# valve V-16, and the tail ends of the 15# valve V-15 and the 16# valve V-16 are respectively provided with a joint which can be connected with a throttling valve 11 of a Christmas tree 10, so that pressurization and gas injection can be respectively carried out on the two well heads.
The high-pressure water injection pump 8 is the power core of whole device, for the water injection pressure raising in the pit fills and provides power, and the entry linkage water pitcher 9 of high-pressure water injection pump 8, water pitcher 9 are the overhead water pitcher, the water injection of the high-pressure water injection pump 8 of being convenient for sets up 1# valve V-1 between overhead water pitcher and the high-pressure water injection pump 8. The outlet of the high-pressure water injection pump 8 is connected with a No. 2 valve V-2, the outlet of the No. 2 valve V-2 is provided with a tee joint, two branch pipes of the tee joint are respectively provided with a No. 3 valve V-3 and a No. 7 valve V-7, and the tail end of an outlet pipeline of the No. 7 valve V-7 is provided with a joint which can be connected with a throttling valve 11 of a Christmas tree 10. And (3) connecting a joint at the tail end of the outlet pipeline of the 7# valve V-7 with a throttling valve 11 of the Christmas tree 10, opening the 1# valve V-1, the 2# valve V-2 and the 7# valve V-7, and closing the 3# valve V-3, so that cold water perfusion can be performed.
The outlet of the 3# valve V-3 is provided with a tee joint, two branch pipes of the tee joint are respectively provided with a 4# valve V-4 and a 5# valve V-5, and the outlet of the 4# valve V-4 is connected to the heating furnace 5. The outlet of the 5# valve V-5 is provided with a tee joint, two branch pipes of the tee joint are respectively provided with a 11# valve V-11 and a 12# valve V-12, the outlet of the 11# valve V-11 is connected to the water channel inlet of the second heat exchanger 6, and the outlet pipeline of the water channel of the second heat exchanger 6 is provided with a 9# valve V-9. The outlet of the 12# valve V-12 is connected to the inlet of the water channel of the first heat exchanger 2, and the 10# valve V-10 is arranged on the outlet pipeline of the water channel of the first heat exchanger 2. And after the outlet of the 9# valve V-9 and the outlet of the 10# valve V-10 are converged by a tee joint, the 6# valve V-6 is arranged, and the outlet of the 6# valve V-6 and the outlet of the 4# valve V-4 are converged by a tee joint and then connected into the heating furnace 5. An outlet pipeline of the heating furnace 5 is provided with an 8# valve V-8, an outlet of the 7# valve V-7 and an outlet of the 8# valve V-8 are converged through a tee joint, and then a joint which can be connected with a throttling valve 11 of a Christmas tree 10 is arranged.
As shown in figure 1, when two well heads exist, the outlet of the 7# valve V-7 and the outlet of the 8# valve V-8 are converged through a tee joint and then connected with the tee joint, two branch pipes of the latter tee joint are respectively provided with a 17# valve V-17 and an 18# valve V-18, and the tail ends of the 17# valve V-17 and the 18# valve V-18 are respectively provided with a joint which can be connected with a throttle valve 11 of a Christmas tree 10.
The invention relates to a process for driving oil field to increase production by tail gas reinjection and waste heat utilization, which drives oil field to increase production by the device of the embodiment, comprises cold water injection, hot water injection and pressurized gas injection, and operates two well heads, wherein:
the cold water perfusion is as follows: the joints at the tail ends of the 17# valve V-17 and the 18# valve V-18 are respectively connected with the throttle valves 11 of the two Christmas trees 10, the 1# valve, the 2# valve V-2 and the 7# valve V-7 are opened, the 3# valve V-3 and the 8# valve V-8 are closed, and the 17# valve V-17 or the 18# valve V-18 is opened, so that cold water filling can be performed on a corresponding well mouth.
Hot water infusion is divided into the following three cases:
in the first case, the heating furnace is used for saving energy and improving efficiency: closing 5# valves V-5, 6# valves V-6 and 7# valves V-7, opening 1# valves V-1, 2# valves V-2, 3# valves V-3, 4# valves V-4 and 8# valves V-8, injecting water, increasing heat energy through the heating furnace 5, and finally performing hot water injection on a corresponding wellhead through 17# valves V-17 or 18# valves V-18.
In the second situation, the waste heat of the tail gas of the generator exchanges heat, so that the energy is saved and the efficiency is increased: closing the 4# valve V-4, the 7# valve V-7, the 9# valve V-9 and the 11# valve V-11, opening the 1# valve V-1, the 2# valve V-2, the 3# valve V-3, the 5# valve V-5, the 6# valve V-6, the 10# valve V-10 and the 12# valve V-12, injecting water, performing energy-saving heat exchange heating through the first heat exchanger 2, heating the heated hot water in the heating furnace 5, and finally performing hot water injection on a corresponding well mouth through the 17# valve V-17 or the 18# valve V-18.
And in the third situation, the tail gas waste heat of the heating furnace is used for hot water filling: closing the 4# valve V-4, the 7# valve V-7, the 10# valve V-10 and the 12# valve V-12, opening the 1# valve V-1, the 2# valve V-2, the 3# valve V-3, the 5# valve V-5, the 6# valve V-6, the 9# valve V-9 and the 11# valve V-11, injecting water, performing energy-saving heat exchange heating through the second heat exchanger 6, heating the heated hot water in the heating furnace 5, and finally performing hot water injection on a corresponding well mouth through the 17# valve V-17 or the 18# valve V-18.
The pressurizing and gas injection comprises the following steps: an outlet pipeline of the gas compressor 4 is provided with a tee joint, two branch pipes of the tee joint are respectively provided with a 15# valve V-15 and a 16# valve V-16, the outlet tail ends of the 15# valve V-15 and the 16# valve V-16 are respectively connected with a throttling valve 11 of the Christmas tree 10, and then pressurization and gas injection operation is respectively carried out on a corresponding wellhead.
Claims (8)
1. The device for compositely driving oil field production increase by tail gas reinjection and waste heat utilization is characterized in that: comprises a generator (1), a heating furnace (5), a gas compressor (4) and a high-pressure water injection pump (8); the tail gas outlet of the generator (1) is connected with a first heat exchanger (2), a water channel is arranged in the first heat exchanger (2), the gas outlet of the first heat exchanger (2) is connected to a first tail gas cleaner (3), the gas outlet of the heating furnace (5) is connected with a second heat exchanger (6), the water channel is arranged in the second heat exchanger (6), the gas outlet of the second heat exchanger (6) is connected to a second tail gas cleaner (7), the outlets of the first tail gas cleaner (3) and the second tail gas cleaner (7) are respectively connected to the gas compressor (4), and the tail end of an outlet pipeline of the gas compressor (4) is provided with a connector used for being connected with a throttling valve (11) of a Christmas tree (10);
an inlet of the high-pressure water injection pump (8) is connected with a water tank (9), an outlet of the high-pressure water injection pump (8) is connected with a 2# valve (V-2), an outlet of the 2# valve (V-2) is provided with a tee joint, two branch pipes of the tee joint are respectively provided with a 3# valve (V-3) and a 7# valve (V-7), and the tail end of an outlet pipeline of the 7# valve (V-7) is provided with a connector used for being connected with a throttling valve (11) of a Christmas tree (10);
the outlet of the 3# valve (V-3) is provided with a tee joint, two branch pipes of the tee joint are respectively provided with a 4# valve (V-4) and a 5# valve (V-5), and the outlet of the 4# valve (V-4) is connected into the heating furnace (5); the outlet of the 5# valve (V-5) is provided with a tee joint, two branch pipes of the tee joint are respectively provided with a 11# valve (V-11) and a 12# valve (V-12), the outlet of the 11# valve (V-11) is connected to the water channel inlet of the second heat exchanger (6), and the water channel outlet of the second heat exchanger (6) is connected into the heating furnace (5); an outlet of the 12# valve (V-12) is connected to a water channel inlet of the first heat exchanger (2), and a water channel outlet of the first heat exchanger (2) is connected into the heating furnace (5); the tail end of the outlet pipeline of the heating furnace (5) is provided with a joint for connecting with a throttle valve (11) of a Christmas tree (10).
2. The tail gas reinjection and waste heat utilization combined drive oilfield stimulation device of claim 1, wherein: the outlet pipeline of the first tail gas cleaner (3) and the outlet pipeline of the second tail gas cleaner (7) are respectively provided with a 14# valve (V-14) and a 13# valve (V-13), the outlets of the 14# valve (V-14) and the 13# valve (V-13) are converged through a tee joint and then connected to the gas compressor (4), the outlet of the gas compressor (4) is provided with a branch pipe, the branch pipes are respectively provided with valves, and the tail ends of the branch pipes are respectively provided with a joint used for being connected with a throttling valve (11) of a Christmas tree (10).
3. The tail gas reinjection and waste heat utilization combined drive oilfield stimulation device of claim 1, wherein: the water tank (9) is an elevated water tank, and a 1# valve (V-1) is arranged between the elevated water tank and the high-pressure water injection pump (8).
4. The tail gas reinjection and waste heat utilization combined drive oilfield stimulation device of claim 1, wherein: a10 # valve (V-10) is arranged on a water channel outlet pipeline of the first heat exchanger (2), a 9# valve (V-9) is arranged on a water channel outlet pipeline of the second heat exchanger (6), an outlet of the 9# valve (V-9) and an outlet of the 10# valve (V-10) are converged through a tee joint, then a 6# valve (V-6) is arranged, and an outlet of the 6# valve (V-6) and an outlet of the 4# valve (V-4) are converged through a tee joint and then connected into the heating furnace (5).
5. The device for compositely driving oil field production increase by tail gas reinjection and waste heat utilization according to claim 1, characterized in that: an outlet pipeline of the heating furnace (5) is provided with an 8# valve (V-8), an outlet of the 7# valve (V-7) and an outlet of the 8# valve (V-8) are converged through a tee joint, and then a connector used for being connected with a throttling valve (11) of a Christmas tree (10) is arranged.
6. The tail gas reinjection and waste heat utilization combined drive oilfield stimulation device of claim 1, wherein: the generator (1) is a natural gas generator.
7. The device for compositely driving oil field production increase by tail gas reinjection and waste heat utilization according to claim 1, characterized in that: an outlet pipeline of the gas compressor (4) is connected with a tee joint, two branch pipes of the tee joint are respectively provided with a 15# valve (V-15) and a 16# valve (V-16), and the tail ends of the 15# valve (V-15) and the 16# valve (V-16) are respectively provided with a connector for connecting with a throttling valve (11) of a Christmas tree (10);
the outlet of the 7# valve (V-7) and the outlet of the 8# valve (V-8) are converged by a tee joint and then connected with the tee joint, two branch pipes of the latter tee joint are respectively provided with a 17# valve (V-17) and an 18# valve (V-18), and the tail ends of the 17# valve (V-17) and the 18# valve (V-18) are respectively provided with a connector used for being connected with a throttling valve (11) of a Christmas tree (10).
8. The process for increasing the yield of the oil field by compositely driving tail gas reinjection and waste heat utilization is characterized by comprising the following steps of: the oil field production increasing is driven by the device for driving the oil field production increasing by the combination of the tail gas reinjection and the waste heat utilization of any one of the claims 1 to 7, and the device comprises cold water injection, hot water injection and pressurized gas injection, wherein:
the cold water perfusion is as follows: connecting a joint at the tail end of an outlet pipeline of the 7# valve (V-7) with a throttling valve (11) of a Christmas tree (10), opening the 2# valve (V-2) and the 7# valve (V-7), closing the 3# valve (V-3), and then performing cold water perfusion;
the hot water perfusion is as follows: closing a 7# valve (V-7), opening a 2# valve (V-2), a 3# valve (V-3), a 4# valve (V-4), a 5# valve (V-5), a 11# valve (V-11) and a 12# valve (V-12), heating water by a first heat exchanger (2) and a second heat exchanger (6), then adding the water into a heating furnace (5) to increase heat energy, and finally performing hot water injection by a throttle valve (11) of a Christmas tree (10);
the pressurizing and gas injection comprises the following steps: and (3) connecting a joint at the tail end of an outlet pipeline of the gas compressor (4) with a throttling valve (11) of the Christmas tree (10), and performing pressurization and gas injection operation through the throttling valve (11) of the Christmas tree (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710665243.0A CN107288600B (en) | 2017-08-07 | 2017-08-07 | Device and process for compositely driving oil field to increase yield by tail gas reinjection and waste heat utilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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