CN201902202U - Staged fracturing string of oil-gas horizontal well - Google Patents
Staged fracturing string of oil-gas horizontal well Download PDFInfo
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- CN201902202U CN201902202U CN201020624719XU CN201020624719U CN201902202U CN 201902202 U CN201902202 U CN 201902202U CN 201020624719X U CN201020624719X U CN 201020624719XU CN 201020624719 U CN201020624719 U CN 201020624719U CN 201902202 U CN201902202 U CN 201902202U
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Abstract
The utility model discloses a staged fracturing string of an oil-gas horizontal well, which comprises a shaft drivepipe, and an oil/gas extraction pipe arranged in the shaft drivepipe, wherein a plurality of through holes are arranged in the wall of the shaft drivepipe in radial direction and correspond to oil-gas layers, and the lower end of the oil/gas extraction pipe in the shaft drivepipe is connected with a plurality of serially-connected fracturing devices that are arranged between adjacent oil-gas layers to form a plurality of relatively independent fracturing stages, the number of the fracturing devices is one less than that of the fracturing stages, a setting steel ball seat is arranged at the lower end of the fracturing device at the tail end, a sand blasting sliding sleeve is arranged between the fracturing device at the tail end and the setting steel ball seat, and the fracturing device at the initial end is connected with the oil/gas extraction pipe by a safety connector. The staged fracturing string of the oil-gas horizontal well can conduct multi-staged fracturing transformation only by one-time string dropping, realizes multi-staged combined extraction, is high in construction successful rate, simple in operation procedures, short in operation period, and low in development cost, reduces the damage on the reservoir beds due to well compression and multiple transformation, and improves the whole development level and development benefit of an oil-gas field.
Description
Technical field
The utility model relates to a kind of oil/gas mining equipment, specifically is a kind of oil/gas horizontal well in segments fracturing string.It is particularly suitable for the multistage pressure break more than three sections and three sections in the high-pressure natural gas horizontal well, closes and adopt, and also can be used for petroleum horizontal well.
Background technology
In recent years, the staged fracturing operating tool string has been designed at the horizontal well characteristic in the domestic petroleum field, these tubing strings or be to carry out pressure break piecemeal, or carry out general pressure break.
Chinese patent literature disclosed " horizontal well in segments fracturing string " (publication number: CN201396131 for example, open day: 2010.02.03), it is made of tubing string, pressure reduction packer, safety joint, sliding sleeve packer, pressure reduction packer and sliding sleeve packer are installed on the tubing string, and safety joint also is installed between the two.In oil reservoirs of horizontal well segmentation modification measures, realize that horizontal well adopts the packer staged fracturing, thereby obviously improved the construction general effect.But it only is applicable to the oil field, solves the problem of net horizontal section packer sand card, and this structure is with the mandatory section construction of pressure break packer, after pressure break is finished an interval, the upper lifting pipe post carries out the pressing crack construction of next interval, causes the intact back of pressure break packer to be difficult to deblocking like this; Because upper lifting pipe post packer sustains damage, and is poorly sealed, cause pressure break to lose efficacy; Strata pressure was higher after pressure break was finished, and easily caused blowout during the upper lifting pipe post, led to a disaster; Operability is poor, and technology is loaded down with trivial details, and carry tubing string at every turn and need dismounting well head and pressure break pipeline, the program complexity, labor intensity of operating staff is big, poor stability.
Disclosed another document of Chinese patent literature " horizontal well mechanical staged fracturing blocking-proof process pipe column " (publication number: CN101338663, open day: 2009.01.07), it mainly solved the LOW PERMEABILITY RESERVOIR horizontal well in fracturing process since below sand setting causes below the little and sand jet outlet of oil jacket annular space area tubing string sand card problem, can only be used in the oilfield horizontal well pressure break, and can not realize that fixed tubular column just carries out the technological requirement of multiple fracturing and combination producing.
Chinese patent literature also disclosed " horizontal well packer staged fracturing technology tube pillar " (publication number: CN101560877, open day: 2009.10.21), though it is under the situation of fixed tubular column, the lamination that changes by 2～3 layers of pitching realizations splits technology, but it also can only be used in process for petroleum recovery, can not adapt to the staged fracturing transformation of high-pressure natural gas horizontal well.
Flourish along with the oil/gas industrial technology, now be badly in need of a kind of special staged fracturing tubing string of research and development at the oil/gas horizontal well, so that satisfying a fixed tubular column in using at the scene, it just can realize 3～4 intervals of staged fracturing transformation, perhaps more a plurality of intervals, realize closing layer drive a well discharge opeing, close technological requirement such as layer gas production.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of special staged fracturing tubing string at the oil/gas horizontal well is provided, satisfy fixed tubular column during it is used at the scene and just can realize that staged fracturing transforms a plurality of intervals, realization close layer drive a well discharge opeing, close technological requirement such as layer gas production, for the later stage production logging provides all-pass footpath tubing string, be the integrated pipe column of oil/gas horizontal well in segments pressing crack construction and combination producing simultaneously.
The purpose of this utility model is achieved in that
A kind of oil gas horizontal well in segments fracturing string, comprise wellbore casing and be arranged in the interior oil recovery/tracheae of wellbore casing, radially be provided with several through holes on the tube wall of described wellbore casing, this through hole is corresponding with oil-gas Layer, and the oil recovery/tracheae lower end in the described wellbore casing is connected with the fracturing device of several series connection; Fracturing device is located between the adjacent oil-gas Layer, form several relatively independent fracturing sections, the quantity of fracturing device is lacked one than pressure break hop count amount, is provided with seat envelope steel ball seat in the lower end of tail end fracturing device, and the head end fracturing device is connected with oil recovery/tracheae by safety joint.
Described fracturing device is made of successively sandblast sliding sleeve, receive seat, centralizer, hydraulic anchor, packer and centralizer, and they are whole by the affixed one-tenth of connector; The side face of described packer cooperates with the inner wall sealing of wellbore casing, with the inner space isolation of wellbore casing; The inwall of wellbore casing is lived on the anchor pinnacle of described hydraulic anchor, and whole fracturing device is anchored on the wellbore casing; Institute's sandblast sliding sleeve is located at the corresponding position of sleeve pipe and oil-gas Layer, and described centralizer is guaranteed to be near the horizontal well central axis swing of tubing string when preventing pressure break when this tubing string is used.
Described sandblast sliding sleeve is made up of sliding sleeve urceolus and sliding sleeve core pipe, radially be provided with sand jet outlet on the sliding sleeve urceolus, the corresponding sliding sleeve core of this sand jet outlet pipe, by the shutoff of sliding sleeve core pipe, sliding sleeve urceolus and sliding sleeve core tubular axis are to being slidingly matched, and fitting face is provided with shear pin, and shear pin is fixed sliding sleeve urceolus and sliding sleeve core pipe, sliding sleeve core pipe suitable for reading has and is used to accept the face that is sealed and matched that starts ball, and the sealing fitting face is with to start ball suitable.
The latus rectum of described sliding sleeve core pipe is different because of each fracturing section in the wellbore casing, sliding sleeve core pipe latus rectum is successively successively decreased to following fracturing section layer by the upper strata fracturing section, and the latus rectum of startup bulb diameter that the sandblast sliding sleeve in each layer fracturing section is supporting and the sliding sleeve core pipe in this layer fracturing section is suitable.
Described sand jet outlet is a plurality of, circumferentially evenly arranges along the sliding sleeve urceolus.
Described sand jet outlet is rectangular-shaped.
Described startup ball is a low-density material ball.
Described low-density material ball is nylon ball or hollow steel ball.
The back side of described seat envelope steel ball seat is located on the interior guide shoe of wellbore casing.
Described affixed be that mode with screw buckle is fixed into integral body.
The beneficial effects of the utility model: adopt said structure only to need lower prop can carry out the fracturing reform of multistage layer, and the laminated purpose of adopting of realization multistage, reduced the sand card phenomenon of scaled high-pressure natural gas well sliding sleeve, starting ball can be along with fracturing outlet liquid is taken out of in the well together after fracturing reform is finished, realized oil recovery/endotracheal all-pass, overcome conventional pressure break and started ball is trapped in influences work such as output and later stage production logging in the oil pipe disadvantage.Effectively raise the construction success rate, simplified the oil and gas development flow chart, shortened the construction operation cycle, reduced kill-job, repeatedly transformed injury, reduced development cost, improved the whole development level and the development benefit of oil gas field reservoir.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a kind of structural representation of the present utility model (three sections staged fracturing tubing string).
Fig. 2 is the structural representation of parts of the present utility model-sandblast sliding sleeve.
Code name implication among the figure: 1-wellbore casing; 2-oil recovery/tracheae; 3-safety joint; 4,10,16-sandblast sliding sleeve; 5, the 11-seat of receiving; 6,9,12,15-centralizer; 7,13-hydraulic anchor; 8,14-packer; 17-seat envelope steel ball; 18-seat envelope steel ball seat; 19-guide shoe; 20-A target spot oil-gas Layer; 21-middle oil-gas Layer; 22-B target spot oil-gas Layer; 23-startup ball; 24-sliding sleeve urceolus; 25-shear pin; 26-sand jet outlet; 27-sliding sleeve core pipe.
The specific embodiment
Referring to Fig. 1 and Fig. 2: the utility model comprises wellbore casing 1 and is arranged in oil recovery/tracheae 2 in the wellbore casing 1, radially be provided with three through holes on the tube wall of wellbore casing 1, these three through holes are corresponding with A target spot oil-gas Layer 20, middle oil-gas Layer 21 and B target spot oil-gas Layer 22 respectively.Oil recovery/tracheae 2 lower ends in the wellbore casing 1 are connected with the fracturing device of two series connection.Each fracturing device is by sandblast sliding sleeve (4,10), receive the seat (5,11), centralizer (6,12), hydraulic anchor (7,13), packer (8,14) and centralizer (9,15) constitute successively, they are whole with the affixed one-tenth of the mode of screw buckle by connector, packer (8,14) side face cooperates with the inner wall sealing of wellbore casing 1, the inner space of wellbore casing 1 is isolated, form three relatively independent spaces (i.e. three fracturing sections), hydraulic anchor (7,13) inwall of wellbore casing 1 is lived on anchor pinnacle, whole fracturing device is anchored on the wellbore casing 1, centralizer is guaranteed to be near the horizontal well central axis swing of tubing string when preventing pressure break when this tubing string is used.Sandblast sliding sleeve (4,10) is located at the corresponding position of wellbore casing 1 and oil-gas Layer.Because of fracturing device is located between the adjacent oil-gas Layer, so, the quantity of fracturing device is lacked one than pressure break hop count amount, for example, only needing during three oil-gas Layer that two fracturing devices are set between three oil-gas Layer gets final product, during seven oil-gas Layer six fracturing devices need be set between seven oil-gas Layer, the quantity of fracturing device and the quantity of fracturing section satisfy this relational expression: fracturing device quantity=fracturing section quantity-1.Be provided with a seat envelope steel ball seat 18 in the lower end of tail end fracturing device, the back side (being non-working surface) of seat envelope steel ball seat 18 is located on the guide shoe 19 in the wellbore casing 1.Be provided with sandblast sliding sleeve 16 between tail end fracturing device and the seat envelope steel ball seat 18, the head end fracturing device is connected with oil recovery/tracheae 2 by safety joint 3.The effect of seat envelope steel ball seat 18 is, when construction, drop into seat envelope steel ball 17 from well head, seat envelope steel ball 17 is fallen on the seat envelope steel ball seat 18, by oil pipe pressurization, it is stressed to make each lamination split the hydraulic anchor (7,13) of device, and its anchor point anchors into wellbore casing 1, packer (8,14) seat is sealed, and each lamination splits device and promptly is positioned and is fixed in the pit shaft conduit 1.Continue pressurization afterwards again, open sandblast sliding sleeve 16, be convenient to the construction and the later stage test of bottom oil-gas Layer.The sandblast sliding sleeve is made up of sliding sleeve urceolus 24 and sliding sleeve core pipe 27, radially be provided with four sand jet outlets 26 on the sliding sleeve urceolus 24, these sand jet outlet 26 corresponding sliding sleeve core pipes 27 are by 27 shutoff of sliding sleeve core pipe, each sand jet outlet 26 is rectangular-shaped, to enlarge its latus rectum, four sand jet outlets 26 evenly arrange circumferentially that along sliding sleeve urceolus 24 the through-flow gross area is very big, be more conducive to sandblast, sand card phenomenon can not take place, greatly improved sandblast sliding sleeve reliability, the commentaries on classics lamination splits the operation one-time success rate and reaches 100%. Sliding sleeve urceolus 24 and 27 axial sliding fits of sliding sleeve core pipe, fitting face is provided with shear pin 25, shear pin 25 is fixing with sliding sleeve core pipe 27 with sliding sleeve urceolus 24, and sliding sleeve core pipe 27 suitable for reading has and be used to accept the face that is sealed and matched that starts ball 23, and the sealing fitting face is with to start ball 23 suitable.Starting ball 23 is low-density material ball, generally adopts nylon ball or hollow steel ball, because it is little to start the quality of ball, starting the back just can be along with fracturing outlet liquid is taken out of in the well together, make oil recovery/tracheae keep the all-pass footpath, obtain maximum gas production flow, also make later stage production logging etc. everything goes well with your work without hindrance.This structure decrease of sandblast sliding sleeve the sand card phenomenon of scaled high-pressure natural gas well sliding sleeve.The latus rectum of sliding sleeve core pipe 27 is different because of each fracturing section in the wellbore casing 1, sliding sleeve core pipe 27 latus rectums are successively successively decreased to following fracturing section layer by the upper strata fracturing section, and the latus rectum of startup bulb diameter that the sandblast sliding sleeve in each layer fracturing section is supporting and the sliding sleeve core pipe in this layer fracturing section is suitable.
Above-mentioned oil recovery/tracheae is the general designation of flow string and air collecting pipe, according to the different objects of exploitation and difference is a flow string during recover petroleum for example, is air collecting pipe when tapping natural gas.
Be example now, describe the course of work of the present utility model in detail: perforating gun under 1, at first in well, disposable three gas-bearing formation sections, the mud lubrication penetrated out to tap natural gas; 2, this tubing string is lowered in the gas water horizontal well, mud in the well is replaced out in anti-circulation; 3, by throwing φ 35mm seat envelope steel ball in the air collecting pipe to seat envelope steel ball seat, the tracheae pressurization produces the tracheae inside and outside differential pressure, and all packer, hydraulic anchor start envelope, the grappling state of taking a seat of going forward side by side, and packing element carries out packing with each layer and oil sets annular space; 4, in air collecting pipe, pressurize, open the sandblast sliding sleeve; 5, air collecting pipe carries out the pressing crack construction of bottom gas-bearing formation; 6, throw φ 38mm low-density ball (promptly starting ball) from tracheae after the bottom gas-bearing formation pressure break, treat ball to pressurizeing behind the sandblast sliding sleeve down, this sandblast sliding sleeve is opened in the shear pin fracture, and ball and sliding sleeve core pipe fall into down a shutoff bottom gas-bearing formation of receiving; 7, air collecting pipe injects the pressing crack construction that carries out the middle part gas-bearing formation; 8, throw φ 45mm low-density ball from tracheae after the middle part gas-bearing formation pressure break, treat that ball pressurizes behind last sandblast sliding sleeve, this sandblast sliding sleeve is opened in the shear pin fracture, and ball and sliding sleeve core pipe fall into a shutoff middle part gas-bearing formation of receiving; 9, air collecting pipe injects the pressing crack construction that carries out the top gas-bearing formation; 10, drive a well after pressure break is finished and carry out discharge opeing and later stage production.
The utility model is particularly suitable for the multistage pressure break more than three sections and three sections in the high-pressure natural gas horizontal well, closes and adopt, and also can be used for petroleum horizontal well.
Claims (10)
1. oil gas horizontal well in segments fracturing string, comprise wellbore casing (1) and be arranged in the interior oil recovery/tracheae (2) of wellbore casing (1), radially be provided with several through holes on the tube wall of described wellbore casing (1), this through hole is corresponding with oil-gas Layer, it is characterized in that: oil recovery/tracheae (2) lower end in the described wellbore casing (1) is connected with the fracturing device of several series connection; Fracturing device is located between the adjacent oil-gas Layer, form several relatively independent fracturing sections, the quantity of fracturing device is lacked one than pressure break hop count amount, be provided with seat envelope steel ball seat (18) in the lower end of tail end fracturing device, be provided with sandblast sliding sleeve (16) between tail end fracturing device and the seat envelope steel ball seat (18), the head end fracturing device is connected with oil recovery/tracheae (2) by safety joint (3).
2. oil gas horizontal well in segments fracturing string according to claim 1 is characterized in that: described fracturing device is made of successively sandblast sliding sleeve, receive seat, centralizer, hydraulic anchor, packer and centralizer, and they are whole by the affixed one-tenth of connector; The side face of described packer cooperates with the inner wall sealing of wellbore casing (1), with the inner space isolation of wellbore casing (1); The inwall of wellbore casing (1) is lived on the anchor pinnacle of described hydraulic anchor, and whole fracturing device is anchored on the wellbore casing (1); Institute's sandblast sliding sleeve is located at the corresponding position of sleeve pipe and oil-gas Layer.
3. oil gas horizontal well in segments fracturing string according to claim 2, it is characterized in that: described sandblast sliding sleeve is made up of sliding sleeve urceolus (24) and sliding sleeve core pipe (27), radially be provided with sand jet outlet (26) on the sliding sleeve urceolus (24), this sand jet outlet (26) corresponding sliding sleeve core pipe (27), by sliding sleeve core pipe (27) shutoff, sliding sleeve urceolus (24) and sliding sleeve core pipe (27) axial sliding fit, fitting face is provided with shear pin (25), shear pin (25) is fixing with sliding sleeve urceolus (24) and sliding sleeve core pipe (27), sliding sleeve core pipe (27) suitable for reading has and is used to accept the face that is sealed and matched that starts ball (23), and the sealing fitting face is with to start ball (23) suitable.
4. oil gas horizontal well in segments fracturing string according to claim 3, it is characterized in that: the latus rectum of described sliding sleeve core pipe (27) is different because of each fracturing section in the wellbore casing (1), sliding sleeve core pipe (27) latus rectum is successively successively decreased to following fracturing section layer by the upper strata fracturing section, and the latus rectum of startup bulb diameter that the sandblast sliding sleeve in each layer fracturing section is supporting and the sliding sleeve core pipe in this layer fracturing section is suitable.
5. oil gas horizontal well in segments fracturing string according to claim 3 is characterized in that: described sand jet outlet (26) is circumferentially evenly arranged along sliding sleeve urceolus (24) for a plurality of.
6. according to claim 3 or 5 described oil gas horizontal well in segments fracturing strings, it is characterized in that: described sand jet outlet (26) is for rectangular-shaped.
7. oil gas horizontal well in segments fracturing string according to claim 3 is characterized in that: described startup ball (23) is a low-density material ball.
8. oil gas horizontal well in segments fracturing string according to claim 7 is characterized in that: described low-density material ball is nylon ball or hollow steel ball.
9. oil gas horizontal well in segments fracturing string according to claim 1 is characterized in that: the back side of described seat envelope steel ball seat (18) is located on the interior guide shoe (19) of wellbore casing (1).
10. oil gas horizontal well in segments fracturing string according to claim 2 is characterized in that: described affixed be that mode with screw buckle is connected into integral body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201020624719XU CN201902202U (en) | 2010-11-25 | 2010-11-25 | Staged fracturing string of oil-gas horizontal well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201020624719XU CN201902202U (en) | 2010-11-25 | 2010-11-25 | Staged fracturing string of oil-gas horizontal well |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102518418A (en) * | 2011-12-26 | 2012-06-27 | 四机赛瓦石油钻采设备有限公司 | Unlimited layer fracturing process |
| CN102606124A (en) * | 2012-03-16 | 2012-07-25 | 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 | Sectioned multi-cluster synchronous volume fracturing technology for double horizontal wells |
| CN102691495A (en) * | 2012-05-18 | 2012-09-26 | 中国石油天然气股份有限公司 | Staged fracturing method for casing cementing well completion high-fracture stratum horizontal well |
| CN103061684A (en) * | 2013-01-21 | 2013-04-24 | 中国石油集团渤海钻探工程有限公司 | Open-hole horizontal well sectional multi-cluster uniform acidizing tubular column and acidizing method thereof |
| CN103075138A (en) * | 2013-01-10 | 2013-05-01 | 中国海洋石油总公司 | Staged fracturing and staged oil production integrated string for horizontal well |
| CN103362487A (en) * | 2012-03-29 | 2013-10-23 | 中国石油天然气股份有限公司 | Staged fracturing method for low-permeability reservoir horizontal well |
| CN103375159A (en) * | 2012-04-17 | 2013-10-30 | 中国石油化工股份有限公司 | Multi-flowing-hole slide bushing and multistage horizontal well fracturing slide bushing string |
| CN103590802A (en) * | 2013-11-26 | 2014-02-19 | 西安通源石油科技股份有限公司 | Horizontal well staged fracturing device and method |
| CN104213893A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Perforation and fracturing integrated tubular column for selectively and repeatedly reforming old well of oil field and working method thereof |
| CN104314546A (en) * | 2014-09-23 | 2015-01-28 | 中国石油天然气股份有限公司 | Staged fracturing well completion pipe string in horizontal well casing and staged fracturing process |
| CN106593391A (en) * | 2016-12-26 | 2017-04-26 | 中国石油天然气股份有限公司 | Chemical deblocking compression type packer partial pressure pipe column and oil well fracturing method |
| CN109138959A (en) * | 2018-08-07 | 2019-01-04 | 中国石油大学(北京) | A kind of supercritical CO2Cumulative fracturing process |
| CN110206531A (en) * | 2019-05-23 | 2019-09-06 | 广州海洋地质调查局 | A kind of oil pipe of horizontal well production profile test method and device |
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- 2010-11-25 CN CN201020624719XU patent/CN201902202U/en not_active Expired - Lifetime
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| CN102518418A (en) * | 2011-12-26 | 2012-06-27 | 四机赛瓦石油钻采设备有限公司 | Unlimited layer fracturing process |
| CN102518418B (en) * | 2011-12-26 | 2014-07-16 | 四机赛瓦石油钻采设备有限公司 | Unlimited layer fracturing process |
| CN102606124A (en) * | 2012-03-16 | 2012-07-25 | 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 | Sectioned multi-cluster synchronous volume fracturing technology for double horizontal wells |
| CN102606124B (en) * | 2012-03-16 | 2015-07-29 | 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 | The synchronous volume fracturing technology of dual horizontal well segmentation many bunches |
| CN103362487A (en) * | 2012-03-29 | 2013-10-23 | 中国石油天然气股份有限公司 | Staged fracturing method for low-permeability reservoir horizontal well |
| CN103375159B (en) * | 2012-04-17 | 2016-01-13 | 中国石油化工股份有限公司 | A kind of many flowing holes sliding sleeve and horizontal well multistage fracturing sliding bush tubing string |
| CN103375159A (en) * | 2012-04-17 | 2013-10-30 | 中国石油化工股份有限公司 | Multi-flowing-hole slide bushing and multistage horizontal well fracturing slide bushing string |
| CN102691495A (en) * | 2012-05-18 | 2012-09-26 | 中国石油天然气股份有限公司 | Staged fracturing method for casing cementing well completion high-fracture stratum horizontal well |
| CN103075138A (en) * | 2013-01-10 | 2013-05-01 | 中国海洋石油总公司 | Staged fracturing and staged oil production integrated string for horizontal well |
| CN103061684A (en) * | 2013-01-21 | 2013-04-24 | 中国石油集团渤海钻探工程有限公司 | Open-hole horizontal well sectional multi-cluster uniform acidizing tubular column and acidizing method thereof |
| CN104213893A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Perforation and fracturing integrated tubular column for selectively and repeatedly reforming old well of oil field and working method thereof |
| CN104213893B (en) * | 2013-06-05 | 2016-08-10 | 中国石油天然气股份有限公司 | Perforation and fracturing integrated tubular column for selectively and repeatedly reforming old well of oil field and working method thereof |
| CN103590802A (en) * | 2013-11-26 | 2014-02-19 | 西安通源石油科技股份有限公司 | Horizontal well staged fracturing device and method |
| CN103590802B (en) * | 2013-11-26 | 2017-01-11 | 西安通源石油科技股份有限公司 | horizontal well staged fracturing device and method |
| CN104314546A (en) * | 2014-09-23 | 2015-01-28 | 中国石油天然气股份有限公司 | Staged fracturing well completion pipe string in horizontal well casing and staged fracturing process |
| CN106593391A (en) * | 2016-12-26 | 2017-04-26 | 中国石油天然气股份有限公司 | Chemical deblocking compression type packer partial pressure pipe column and oil well fracturing method |
| CN106593391B (en) * | 2016-12-26 | 2019-03-15 | 中国石油天然气股份有限公司 | Chemical deblocking compression type packer partial pressure pipe column and oil well fracturing method |
| CN109138959A (en) * | 2018-08-07 | 2019-01-04 | 中国石油大学(北京) | A kind of supercritical CO2Cumulative fracturing process |
| CN110206531A (en) * | 2019-05-23 | 2019-09-06 | 广州海洋地质调查局 | A kind of oil pipe of horizontal well production profile test method and device |
| CN110206531B (en) * | 2019-05-23 | 2024-04-09 | 广州海洋地质调查局 | Method and device for testing output profile of horizontal well oil pipe |
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