CN102383764A - Sand-blocking-preventing oil-extraction production tubular column - Google Patents
Sand-blocking-preventing oil-extraction production tubular column Download PDFInfo
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- CN102383764A CN102383764A CN2010102719872A CN201010271987A CN102383764A CN 102383764 A CN102383764 A CN 102383764A CN 2010102719872 A CN2010102719872 A CN 2010102719872A CN 201010271987 A CN201010271987 A CN 201010271987A CN 102383764 A CN102383764 A CN 102383764A
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Abstract
The invention discloses a sand-blocking-preventing oil-extraction production tubular column, aiming at overcoming the defects that in the existing oil-extraction production tubular column can not be lifted after being blocked by sand and is difficult to deblock so as to cause overhauling of the oil well and the like. The sand-blocking-preventing oil-extraction production tubular column is characterized in that a sealing tube, a hollow bridge plug and a release of a hollow release tubular column are fixedly connected in sequence from bottom to top; the hollow release tubular column is positioned between a production layer and a control layer; the hollow bridge plug is set and is clamped on a sleeve wall; a plug, a screening tube, a core tube, a safety joint, a pressure-difference type safety valve, a release device, a self-sealing-examining packer, a pressure-difference type oil sleeve communicating valve, an oil pump and an oil tube of a plug-in type oil-extraction tubular column are fixedly connected in sequence from bottom to top; the core tube penetrates through the sealing tube of the hollow release tubular column, and a radial sealing device is arranged between the core tube and the sealing tube; the screening tube connected at the lower end of the core tube is positioned on the production layer; and the self-sealing-examining packer is positioned above the control layer. The sand-blocking-preventing oil-extraction production tubular column has the beneficial effects of having simple and convenient structure, not only meeting the production needs, but also being beneficial to deblocking of the tubular column and the later-stage tubular column measure treatment.
Description
Affiliated technical field
The present invention relates to a kind of oil recovery flow string, especially relate 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.
Summary of the invention
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 present invention 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.
The present invention solves first technical scheme that its technical problem adopts: 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.
The present invention solves second technical scheme that its technical problem adopts: 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 invention has the beneficial effects as follows, adopt novel releasing device, supporting joint safe in utilization makes tubular column structure simple, convenient, can satisfy the tubing string measure processing that the production needs help tubing string deblocking and later stage again.
Description of drawings
Fig. 1 is the sand control card oil recovery flow string first example structure sketch map of the present invention.
Fig. 2 is the sand control card oil recovery flow string second example structure sketch map of the present invention.
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 tube, 12. screen casings, 13. plugs, 14. self-test sealing packers of giving up, 15. sleeve pipes; 16. producing zone, 17. key-courses, 18. plug-in type flow strings, 19. releasing type flow strings, the 20. hollow tubing strings of giving up.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.But what those skilled in the art should know is to the invention is not restricted to the listed specific embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.
First embodiment of the invention 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.
Second embodiment of the invention 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 sand control card oil recovery flow string of the present invention; 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 sand control card oil recovery flow string of the present invention 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 of assembled 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, 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 the plug-in type flow string 18 or the releasing type flow string 19 of assembled is 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, and formation fluid is through screen casing 12 or get into core pipe 10, oil pipe 1, carries outside pit shaft through 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 breaks off 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 breaks off 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 present invention, 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 |
|---|---|---|---|
| CN2010102719872A CN102383764A (en) | 2010-09-01 | 2010-09-01 | Sand-blocking-preventing oil-extraction production tubular column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102719872A CN102383764A (en) | 2010-09-01 | 2010-09-01 | Sand-blocking-preventing oil-extraction production tubular column |
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| CN102383764A true CN102383764A (en) | 2012-03-21 |
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| CN2010102719872A Pending CN102383764A (en) | 2010-09-01 | 2010-09-01 | Sand-blocking-preventing oil-extraction production tubular column |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104364463A (en) * | 2012-06-11 | 2015-02-18 | 哈利伯顿能源服务公司 | Shunt tube connection and distribution assembly and method |
| CN105089583A (en) * | 2015-07-30 | 2015-11-25 | 中国石油天然气股份有限公司 | Layered controllable oil production pipe column |
| CN105178905A (en) * | 2015-09-11 | 2015-12-23 | 中国石油天然气股份有限公司 | Horizontal well bridge plug setting and channeling testing integrated process pipe column and method |
Citations (5)
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| CN1066316A (en) * | 1991-04-30 | 1992-11-18 | 加利福尼亚联合石油公司 | Hydraulic release system |
| US5638904A (en) * | 1995-07-25 | 1997-06-17 | Nowsco Well Service Ltd. | Safeguarded method and apparatus for fluid communiction using coiled tubing, with application to drill stem testing |
| CN2856407Y (en) * | 2005-05-31 | 2007-01-10 | 中国石油天然气股份有限公司 | Perforating and fracturing combined pipe column for horizontal well |
| CN201165866Y (en) * | 2008-03-04 | 2008-12-17 | 北京华油油气技术开发有限公司 | Horizontal well division and combination extracting pipe column |
| CN201778781U (en) * | 2010-09-01 | 2011-03-30 | 大港油田集团有限责任公司 | Sand jamming prevention oil extraction production tubular column |
-
2010
- 2010-09-01 CN CN2010102719872A patent/CN102383764A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066316A (en) * | 1991-04-30 | 1992-11-18 | 加利福尼亚联合石油公司 | Hydraulic release system |
| US5638904A (en) * | 1995-07-25 | 1997-06-17 | Nowsco Well Service Ltd. | Safeguarded method and apparatus for fluid communiction using coiled tubing, with application to drill stem testing |
| CN2856407Y (en) * | 2005-05-31 | 2007-01-10 | 中国石油天然气股份有限公司 | Perforating and fracturing combined pipe column for horizontal well |
| CN201165866Y (en) * | 2008-03-04 | 2008-12-17 | 北京华油油气技术开发有限公司 | Horizontal well division and combination extracting pipe column |
| CN201778781U (en) * | 2010-09-01 | 2011-03-30 | 大港油田集团有限责任公司 | Sand jamming prevention oil extraction production tubular column |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104364463A (en) * | 2012-06-11 | 2015-02-18 | 哈利伯顿能源服务公司 | Shunt tube connection and distribution assembly and method |
| CN104364463B (en) * | 2012-06-11 | 2018-12-14 | 哈利伯顿能源服务公司 | Isocon connection and allocation component and method |
| CN105089583A (en) * | 2015-07-30 | 2015-11-25 | 中国石油天然气股份有限公司 | Layered controllable oil production pipe column |
| CN105178905A (en) * | 2015-09-11 | 2015-12-23 | 中国石油天然气股份有限公司 | Horizontal well bridge plug setting and channeling testing integrated process pipe column and method |
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Application publication date: 20120321 |