CN201778781U - Sand jamming prevention oil extraction production tubular column - Google Patents
Sand jamming prevention oil extraction production tubular column Download PDFInfo
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- CN201778781U CN201778781U CN2010205157321U CN201020515732U CN201778781U CN 201778781 U CN201778781 U CN 201778781U CN 2010205157321 U CN2010205157321 U CN 2010205157321U CN 201020515732 U CN201020515732 U CN 201020515732U CN 201778781 U CN201778781 U CN 201778781U
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Abstract
A sand jamming prevention oil extraction production tubular column aims to overcome the shortcomings that an existing oil extraction production tubular column is jammed and can not be lifted in case of sand jamming, is difficult in deblocking, accordingly leads to oil well overhaul and the like. A sealing tube, a hollow bridge plug and a releaser of a hollow releasing tubular column are sequentially fixedly connected from bottom to top, wherein the hollow releasing tubular column is positioned between a production layer and a control layer, and the packed hollow bridge plug is clamped on a bushing wall. A screwed plug, a sieve tube, a core tube, a safety joint, a differential pressure safety valve, a releasing device, a self-checking packer, a differential pressure oil jacket communication valve, an oil extraction pump and an oil tube of an inserting oil extraction production tubular column are sequentially fixedly connected from bottom to top, wherein the core tube penetrates through the sealing tube of the hollow releasing tubular column. Besides, a radial sealing device is mounted between the core tube and the sealing tube; the sieve tube connected to the lower end of the core tube is positioned on the production layer; and the self-checking packer is positioned above the control layer. The tubular column has the advantages of simple structure, convenience and capabilities of not only meeting production needs, but also favoring tubular column deblocking and later-period tubular column measures for treatment.
Description
Affiliated technical field
The utility model relates to a kind of oil recovery flow string, especially relates to a kind of sand control card oil recovery flow string.
Background technology
Along with deepening continuously of oil field development, the stratum becomes increasingly complex, and interlayer difference is big, closes to adopt and can not satisfy the production demand, and mechanical separate zone production has become the effective technical means of potentiality between tap layer.
At present, oil field machinery branch commonly used is adopted flow string, because process pipe string setted structure imperfection, compliance is relatively poor in sand output well, and sanding formation usually will block a layer packer and bury extremely, and tubing string is stuck and carries motionlessly when examining pump, causes workover, the operating cost raising.In order to address this problem, when adopting tubing string in following minute, general shifting to an earlier date on card layer packer top adds pull-type and the safety joint of left-hand thread formula, because the structural limitations of safety joint, the pull-type safety joint discharges in movable tubing string unfreezing easily automatically, does not reach the purpose of activity unfreezing; The safety joint of left-hand thread formula then often causes tubing string basic commentaries on classics when the sand card takes place motionless because of pretightning force is excessive, thereby can't discharge.These two kinds of safety joints can not solve the problem of oil well sand card tubing string effectively, and condition can not facilitate for the follow-up of tubing string.
The utility model content
For overcome behind the sand card that existing oil recovery flow string exists tubing string be stuck and carry motionless, deblocking is difficult, causes deficiencies such as workover, the utility model provides a kind of sand control card oil recovery flow string.This sand control card oil recovery flow string tubular column structure is reasonable, can satisfy the requirement that sets of packer, and tubing string is communicated with up and down in the time of guaranteeing to produce again, oil jacket is communicated with; Tubing string is safe and reliable, is convenient to unsealing operation; Supporting releasing device of tubing string and safety joint, under the disadvantageous state of deblocking, releasing device can be tubing string and discharges certain space, and the space of packer deblocking is provided; Safety joint is the tubing string later stage condition of facilitating of taking measures.
First technical scheme that its technical problem that solves the utility model adopts is: sand control card oil recovery flow string comprises the hollow tubing string of giving up, plug-in type flow string, the sealed tube of the hollow tubing string of giving up, hollow bridging plug, giving up is fixedly connected sequentially from the bottom to top, the hollow tubing string of giving up is between producing zone and key-course, on hollow bridging plug sets and be stuck in the casing wall; The plug of plug-in type flow string, screen casing, core pipe, safety joint, differential normal open valve, releasing device, self-test sealing packer, differential oil jacket communicating valve, oil well pump, oil pipe are fixedly connected sequentially from the bottom to top; The core pipe passes through the sealed tube of the hollow tubing string of giving up, and between core pipe and the sealed tube apex combustion seal is installed; The screen casing that core pipe lower end connects is positioned at producing zone; Self-test sealing packer is positioned at the key-course top.
Second technical scheme that its technical problem that solves the utility model adopts is: sand control card oil recovery flow string comprises the hollow tubing string of giving up, releasing type flow string, the sealed tube of the hollow tubing string of giving up, hollow bridging plug, giving up is fixedly connected sequentially from the bottom to top, the hollow tubing string of giving up is between producing zone and key-course, and hollow bridging plug sets and be stuck on the internal surface of sleeve pipe; The core pipe of releasing type flow string, safety joint, differential normal open valve, releasing device, the self-test sealing packer of giving up are fixedly connected sequentially from the bottom to top; The core pipe passes through the sealed tube of the hollow tubing string of giving up, and between core pipe and the sealed tube apex combustion seal is installed; Core pipe lower end is positioned at producing zone; The self-test sealing packer of giving up is positioned at the key-course top.
The beneficial effects of the utility model are, adopt novel releasing device, and supporting joint safe in utilization makes tubular column structure simple, convenient, can satisfy to produce needs and help the tubing string measure in tubing string deblocking and later stage again and handle.
Description of drawings
Fig. 1 is the utility model sand control card oil recovery flow string first example structure schematic diagram.
Fig. 2 is the utility model sand control card oil recovery flow string second example structure schematic diagram.
Among the figure: 1. oil pipe, 2. oil well pump, 3. differential oil jacket communicating valve, 4. self-test sealing packer, 5. releasing device, 6. differential normal open valve, 7. safety joint is 8. given up, 9. hollow bridging plug, 10. core pipe, 11. sealed tubes, 12. screen casing, 13. plugs, 14. self-test sealing packers of giving up, 15. sleeve pipe, 16. producing zones, 17. key-courses, 18. the plug-in type flow string, 19. releasing type flow strings, the 20. hollow tubing strings of giving up.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.But what those skilled in the art should know is that the utility model is not limited to the listed specific embodiment, as long as meet spirit of the present utility model, all should be included in the protection domain of the present utility model.
The utility model first embodiment is: sand control card oil recovery flow string comprises the hollow tubing string 20 of giving up, plug-in type flow string 18.The hollow tubing string 20 of giving up by sealed tube 11, hollow bridging plug 9, giving up 8 is fixedly connected sequentially from the bottom to top and forms.The plug 13 of plug-in type flow string 18, screen casing 12, core pipe 10, safety joint 7, differential normal open valve 6, releasing device 5, self-test sealing packer 4, differential oil jacket communicating valve 3, oil well pump 2, oil pipe 1 are fixedly connected sequentially from the bottom to top.
The utility model second embodiment is: sand control card oil recovery flow string comprises the hollow tubing string 20 of giving up, releasing type flow string 19.The hollow tubing string 20 of giving up by sealed tube 11, hollow bridging plug 9, giving up 8 is fixedly connected sequentially from the bottom to top and forms.The core pipe 10 of releasing type flow string 19, safety joint 7, differential normal open valve 6, releasing device 5, the self-test sealing packer 14 of giving up are fixedly connected sequentially from the bottom to top.
In above-mentioned two embodiment, differential normal open valve 6 adopts the patented product of inventor's development, and (patent No.: ZL200720305359.5), the patented product (patent No.: 200920277614.9) be the tubing string later stage condition of facilitating of taking measures of inventor's development is adopted in safety joint 7; Acting as of releasing device 5, under the disadvantageous state of deblocking, it can be for plug-in type flow string 18 or the certain space of releasing type flow string 19 releases, for the packer deblocking creates conditions.
Simultaneously, the effect of used differential oil jacket communicating valve 3 is to set the radial passage of closing oil pipe and sleeve pipe connection in the process at the self-test sealing packer 4 or the self-test sealing packer 14 of giving up in the utility model sand control card oil recovery flow string, form confined space, guarantee that suppressing of packer sets, open the radial passage that oil pipe and sleeve pipe are communicated with during ordinary production, can anti-flushing well and the operation of survey liquid level.The effect of the self-test sealing packer 4 and the self-test sealing packer 14 of giving up is and hollow bridging plug 9 forms two cards, separates producing zone and key-course, and can judge whether the packing state of packer is intact when setting; The effect of differential normal open valve 6 is that the self-test sealing packer 4 or the self-test sealing packer 14 of giving up set and form confined space in the process, guarantees that suppressing of packer sets, and is unimpeded up and down in the tubing string during ordinary production; 8 the effect of giving up is to guarantee being lowered to, setting, putting aside of the hollow tubing string 20 of giving up; The effect of hollow bridging plug 9 is to form two cards with packer 4 or 14, guarantees the insertion and the sealing of plug-in type flow string 18 or releasing type flow string 19 simultaneously, separates producing zone and key-course.
The operation process of using the utility model sand control card oil recovery flow string is:
At first, with also fixing in hollow tubing string 20 lower going-into-wells of giving up.The hollow tubing string 20 of giving up that assembling is finished is connected the oil pipe lower end, is lowered to oil pipe with precalculated position under hollow tubing string 20 lower going-into-wells of giving up, and the promptly hollow tubing string 20 of giving up is between key-course 17 and producing zone 16; Suppress then, hollow bridging plug 9 sets and is stuck on the tube wall of sleeve pipe 15, and key-course 17 and producing zone 16 are separated; Continue to suppress, 8 the pin of cutting off of giving up is cut off; The proposition tubing string more than 8 of giving up.
Second step, lower end and G.I.H that plug-in type flow string 18 that assembling is finished or releasing type flow string 19 are connected oil pipe.
The core pipe 10 of plug-in type flow string 18 passes through the sealed tube 11 of the hollow tubing string 20 of giving up among first embodiment, between core pipe 10 and the sealed tube 11 apex combustion seal is installed, and separates key-course 17 and producing zone 16.The screen casing 12 that core pipe 10 lower ends connect is positioned at producing zone 16; Self-test sealing packer 4 is positioned at key-course 17 tops, suppresses tubing string, and self-test sealing packer 4 sets, differential normal open valve 6, differential oil jacket communicating valve 3 closed conditions.During the oil recovery production operation, differential normal open valve 6, the differential oil jacket communicating valve 3 of plug-in type flow string 18 are in opening, differential normal open valve 6 is communicated with tubing string up and down, differential oil jacket communicating valve 3 makes oil pipe and sleeve pipe radial communication, formation fluid is through screen casing 12 or enter core pipe 10, oil pipe 1, carries outside pit shaft by oil well pump 2.
When needing to change tubing string, deblocking plug-in type flow string 18.If deblocking is smooth, plug-in type tubing string 18 is proposed earlier; Be lowered to fishing string again, pull the hollow tubing string 20 of giving up out.If plug-in type tubing string 18 is by the sand card, separate the tubing string of being honored as a queen and carry motionlessly, to suppress earlier and treat that releasing device 5 discharges certain length, upper lifting pipe post self-test sealing packer 4 deblockings continue the upper lifting pipe post, and tubing string disconnects from safety joint 7 and proposing; Then, the well-flushing sand washing is lowered to fishing string again, pulls the hollow tubing string 20 of giving up out.
The core pipe 10 of releasing type flow string 19 passes through the sealed tube 11 of the hollow tubing string 20 of giving up among second embodiment, between core pipe 10 and the sealed tube 11 apex combustion seal is installed, and separates producing zone 17 and key-course 16, and core pipe 10 lower ends are positioned at producing zone 16; The self-test sealing packer 14 of giving up is positioned at the top of key-course 17.Tubing string is suppressed, and the self-test sealing packer 14 of giving up sets; Continue to suppress, cut off the pin of giving up of the self-test sealing packer 14 of giving up; The upper lifting pipe post, releasing type flow string 19 is put aside by the place of giving up of the self-test sealing packer 14 of giving up, and is suspended on the wellbore casing wall.During the oil recovery production operation, formation fluid is carried outside pit shaft through core pipe 10, oil pipe 1 and pumping pipe string.
When needing to change tubing string, be lowered to fishing string and be connected with releasing type flow string 19, deblocking releasing type flow string 19 if deblocking is smooth, proposes releasing type flow string 19 earlier; Be lowered to fishing string again, propose the hollow tubing string 20 of giving up.If releasing type flow string 19 is by the sand card, separate the tubing string of being honored as a queen and carry motionlessly, to suppress releasing device 5 earlier and discharge certain length, upper lifting pipe post self-test sealing packer 14 deblockings of giving up continue the upper lifting pipe post, and tubing string disconnects from safety joint 7 and proposing; Then, the well-flushing sand washing is lowered to fishing string again, pulls the hollow tubing string 20 of giving up out.
It should be noted that the foregoing description is example and unrestricted the utility model, those skilled in the art can design a lot of alternate embodiments and not break away from the scope of appended claims.
Claims (2)
1. sand control card oil recovery flow string, comprise the hollow tubing string of giving up, flow string, it is characterized in that: the sealed tube (11) of the hollow tubing string of giving up (20), hollow bridging plug (9), give up (8) are fixedly connected sequentially from the bottom to top, the hollow tubing string of giving up (20) is positioned between producing zone (16) and the key-course (17), and hollow bridging plug (9) sets and is stuck on sleeve pipe (15) inwall; The plug (13) of plug-in type flow string (18), screen casing (12), core pipe (10), safety joint (7), differential normal open valve (6), releasing device (5), self-test sealing packer (4), differential oil jacket communicating valve (3), oil well pump (2), oil pipe (1) are fixedly connected sequentially from the bottom to top; Core pipe (10) passes through the sealed tube (11) of the hollow tubing string of giving up (20), between core pipe (10) and the sealed tube (11) apex combustion seal is installed; The screen casing (12) that core pipe (10) lower end connects is positioned at producing zone (16); Self-test sealing packer (4) is positioned at key-course (17) top.
2. sand control card oil recovery flow string, comprise the hollow tubing string of giving up, flow string, it is characterized in that: the sealed tube (11) of the hollow tubing string of giving up (20), hollow bridging plug (9), give up (8) are fixedly connected sequentially from the bottom to top, the hollow tubing string of giving up (20) is positioned between producing zone (16) and the key-course (17), and hollow bridging plug (9) sets and is stuck on sleeve pipe (15) inwall; The core pipe (10) of releasing type flow string (19), safety joint (7), differential normal open valve (6), releasing device (5), the self-test sealing packer of giving up (14) are fixedly connected sequentially from the bottom to top; Core pipe (10) passes through the sealed tube (11) of the hollow tubing string of giving up (20), between core pipe (10) and the sealed tube (11) apex combustion seal is installed; Core pipe (10) lower end is positioned at producing zone (16); The self-test sealing packer (14) of giving up is positioned at key-course (17) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205157321U CN201778781U (en) | 2010-09-01 | 2010-09-01 | Sand jamming prevention oil extraction production tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205157321U CN201778781U (en) | 2010-09-01 | 2010-09-01 | Sand jamming prevention oil extraction production tubular column |
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| Publication Number | Publication Date |
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| CN201778781U true CN201778781U (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205157321U Expired - Lifetime CN201778781U (en) | 2010-09-01 | 2010-09-01 | Sand jamming prevention oil extraction production tubular column |
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| CN (1) | CN201778781U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383764A (en) * | 2010-09-01 | 2012-03-21 | 大港油田集团有限责任公司 | Sand-blocking-preventing oil-extraction production tubular column |
| CN104047588A (en) * | 2014-06-20 | 2014-09-17 | 中国石油化工股份有限公司 | Underground gas-liquid separation tubular column |
| CN104420834A (en) * | 2013-08-23 | 2015-03-18 | 天津大港油田钻采技术开发公司 | Separate-layer sand blocking simultaneous production pipe string |
| CN112983290A (en) * | 2019-12-13 | 2021-06-18 | 中国石油天然气股份有限公司 | Oil well production string, use method of oil well production string and oil well production system |
-
2010
- 2010-09-01 CN CN2010205157321U patent/CN201778781U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383764A (en) * | 2010-09-01 | 2012-03-21 | 大港油田集团有限责任公司 | Sand-blocking-preventing oil-extraction production tubular column |
| CN104420834A (en) * | 2013-08-23 | 2015-03-18 | 天津大港油田钻采技术开发公司 | Separate-layer sand blocking simultaneous production pipe string |
| CN104420834B (en) * | 2013-08-23 | 2017-03-29 | 天津大港油田钻采技术开发公司 | Layering sand block is same to adopt tubing string |
| CN104047588A (en) * | 2014-06-20 | 2014-09-17 | 中国石油化工股份有限公司 | Underground gas-liquid separation tubular column |
| CN112983290A (en) * | 2019-12-13 | 2021-06-18 | 中国石油天然气股份有限公司 | Oil well production string, use method of oil well production string and oil well production system |
| CN112983290B (en) * | 2019-12-13 | 2023-05-26 | 中国石油天然气股份有限公司 | Oil well production pipe column, use method of oil well production pipe column and oil well production system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN DAGANG OIL FIELD DRILLING TECHNOLOGY DEVEL Effective date: 20120703 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120703 Address after: Three Dagang oil field, Tianjin, Grand Port, No. 300280 Co-patentee after: Tianjin Dagang Oilfield Drilling Technology Development Co., Ltd. Patentee after: Dagang Oil Field Group Co., Ltd. Address before: Three Dagang oil field, Tianjin, Grand Port, No. 300280 Patentee before: Dagang Oil Field Group Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Three Dagang oil field, Tianjin, Grand Port, No. 300280 Patentee after: Dagang Oil Field Group Co., Ltd. Patentee after: DRILLING TECHNOLOGY DEVELOPMENT COMPANY, TIANJIN DAGANG OILFIELD RESEARCH INSTITUTE OF PETROLEUM ENGINEERING Address before: Three Dagang oil field, Tianjin, Grand Port, No. 300280 Patentee before: Dagang Oil Field Group Co., Ltd. Patentee before: Tianjin Dagang Oilfield Drilling Technology Development Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 300270 Tianjin Binhai New Area Dagang No.3 Hospital Co-patentee after: Tianjin Dagang Oil Field Petroleum Engineering Research Institute Drilling Technology Development Co Ltd Patentee after: Dagang Oil Field Group Co., Ltd. Address before: No.3 Dagang Oilfield Hospital, Dagang District, Tianjin Co-patentee before: DRILLING TECHNOLOGY DEVELOPMENT COMPANY, TIANJIN DAGANG OILFIELD RESEARCH INSTITUTE OF PETROLEUM ENGINEERING Patentee before: Dagang Oil Field Group Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |