CN101881142B - Self-sealing setting ball seat - Google Patents
Self-sealing setting ball seat Download PDFInfo
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- CN101881142B CN101881142B CN201010216311.3A CN201010216311A CN101881142B CN 101881142 B CN101881142 B CN 101881142B CN 201010216311 A CN201010216311 A CN 201010216311A CN 101881142 B CN101881142 B CN 101881142B
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- tube
- setting ball
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Abstract
The invention discloses a self-sealing setting ball seat, which relates to the technical field of the manufacturing of underground packer tools in petroleum and natural gas industries. The invention provides the self-sealing setting ball seat, which adopts two-way sealing design and can realize the positive and negative sealing of a tubular column of an underground packer. The self-sealing setting ball seat comprises a self-sealing mechanism and a shell mechanism, wherein a self-sealing tube of the self-sealing mechanism is arranged in a self-sealing sleeve; four side holes are uniformly distributed at corresponding positions on the self-sealing tube and the self-sealing sleeve; and a shell of the shell mechanism is in threaded connection with a joint. The self-sealing setting ball seat solves the problem that only positive sealing can be performed in the prior art, and has the characteristic of the realization of positive and negative sealing in the construction of a high-pressure oil-gas well.
Description
Technical field:
A kind of self-sealing setting ball seat, for volume increase or the completion practice after petroleum and natural gas well brill completion, relate to the manufacturing technology field of industrial gas oil downhole packer instrument.
Background technology:
In petroleum and natural gas well volume increase or completion practice, need to be lowered to the tubing string with one or more packers, and make packer setting, so that needing the well section of operation and the well section that does not need operation to separate, make packer setting that various ways be arranged, when setting the higher Oil/gas Well of pressure and use packer, setting ball seat is the most frequently used mode, while adopting this mode to set, need to be arranged on the position below packer in tubing string to setting ball seat, for the well that adopts the one trip string construction, after the packer tubing string is lowered into the design well depth, replace out the well killing fluid in well, then drop into setting ball, setting ball is placed on setting ball seat, and then forward blocks the circulation port on setting ball seat, now by well head, in pipe, suppresses, make packer setting, then just can carry out construction operation, for adopting drilling rod to send the packer tubing string to design attitude, and with after the packer tubing string separates, the well of constructing with tubing string tieback packer tubing string again, this method is usually also referred to as the well that adopts the construction of secondary tubing string, for the well that adopts the construction of secondary tubing string, from drilling rod be separated to tubing string tieback upper packer tubing string during this period of time in, because the well killing fluid of higher density is replaced out by more low-density completion fluid, overpressure is lower than the outer formation fluid pressure of pipe, the hydrocarbon fluids on stratum will flow out, enter in upper tube and arrive well head by the circulation port on setting ball seat again, thereby the complex situations such as well kick or blowout occur, when this thing happens, not only require setting ball seat energy forward shutoff circulation port, also want oppositely shutoff circulation port, at present, setting ball seat only has the function of forward shutoff both at home and abroad, realize setting of packer, and do not possess the function of reverse shutoff, therefore when the complex situations of well kick or blowout occur, prior art can not realize the ability of reverse shutoff, and it is very dangerous that such situation is constructed at high-pressure oil-gas well.
Summary of the invention:
The objective of the invention is, in order to overcome the deficiencies in the prior art, to adopt the design of two-way shutoff, a kind of self-sealing setting ball seat that can realize positive and negative two-way plugged well lower packet tubing string is provided.
The present invention is achieved in that and the present invention includes self-styled mechanism and shell mechanism, it is characterized in that: described self-styled mechanism comprises from tube sealing 5, self-sealing sleeve 6 and stop collar 10, in tube sealing 5 is arranged on self-sealing sleeve 6, be provided with lock ring groove 13 in the bottom from tube sealing 5, afterbody from tube sealing 5 is equipped with lock ring 9, from tube sealing 5 and the corresponding position of self-sealing sleeve 6, is being evenly equipped with respectively four side openings 12; Shell mechanism comprises housing 8 and joint 1, and housing 8 is with joint 1 by being threaded, and the upper end of self-sealing sleeve 6 is connected with the internal thread of joint 1, and self-sealing sleeve 6 lower ends and stop collar 10 are threaded connection;
Described lock ring groove 13 upper surfaces are the conical surface, and lower surface is vertical with axis;
Described fixing by shear pin 2 from tube sealing 5 and self-sealing sleeve 6;
Be provided with sealing ring 7 at self-sealing sleeve 6 and between tube sealing 5, between self-sealing sleeve 6 and joint 1 inner circle, be provided with sealing ring 3;
Be provided with sealing ring 4 between joint 1 screw thread lower end cylindrical and housing 8 upper end inner circles;
During work, under the promotion of ground pressure, from tube sealing 5, move downward, lock ring 9 is motionless, after moving downward from tube sealing 5 and putting in place, lock ring 9 enters in lock ring groove 13, pinning is from tube sealing 5, makes it can not be to top offset, simultaneously, be arranged on the stop collar 10 from tube sealing 5 bottoms, play restriction effect to bottom offset from tube sealing 5; Between self-sealing sleeve 6 and housing 8, annular space is arranged, for circulation provides passage for liquid; When setting ball is seated at from tube sealing 5 upper port and seals, to suppress in from well head to pipe, the above overpressure of setting ball seat just, higher than the pipe external pressure, is realized setting of packer; In packer setting, because setting ball blocks the endoporus from tube sealing 5, while suppressing in from well head to pipe, from tube sealing 5 upper pressure higher than bottom pressure, cut off shear pin 2, from tube sealing 5 to descending operation, when sealing ring 7 is descending cross side opening 12 after, side opening 12 just is plugged, simultaneously lock ring groove 13 also overlaps with lock ring 9 positions, and pinning is from tube sealing 5, now inside and outside setting ball seat again without passage UNICOM, realize the purpose of forward and reverse plugging tubing string, reached the purpose of complex situations such as preventing well kick or blowout.
Advantage of the present invention and beneficial effect are: setting of the present invention from tube sealing 5 when setting ball is seated at its upper port and seals, can forward shutoff from the endoporus of tube sealing 5, realize setting of packer; In packer setting, because setting ball blocks the endoporus from tube sealing 5, from tube sealing 5, cut off shear pin 2 to descending operation, can block side opening 12, realize the purpose of reverse plugging tubing string, reach the purpose of complex situations such as preventing well kick or blowout.
The accompanying drawing explanation:
Fig. 1 is cross-sectional view of the present invention.
The specific embodiment:
Provide embodiments of the invention below in conjunction with accompanying drawing:
Embodiment 1:
The present invention includes self-styled mechanism and shell mechanism, self-styled mechanism comprises from tube sealing 5, self-sealing sleeve 6 and stop collar 10, in tube sealing 5 is arranged on self-sealing sleeve 6, from tube sealing 5, by shear pin 2, be fixed in self-sealing sleeve 6, in order to provide passage for liquid to circulation, be evenly equipped with respectively four side openings 12 from tube sealing 5 and the corresponding position of self-sealing sleeve 6, be provided with annular space between self-sealing sleeve 6 and housing 8, be provided with lock ring groove 13 in the bottom from tube sealing 5, at the afterbody from tube sealing 5, lock ring 9 is housed, lock ring groove 13 upper surfaces are the conical surface, lower surface is vertical with axis, self-sealing sleeve 6 lower ends and stop collar 10 are threaded connection, the upper end of described self-sealing sleeve 6 is connected with the internal thread of the joint of shell mechanism 1, shell mechanism comprises housing 8 and joint 1, housing 8 with joint 1 by being threaded, for the purpose sealed, be provided with sealing ring 7 at self-sealing sleeve 6 and between tube sealing 5, be provided with sealing ring 3 between self-sealing sleeve 6 and joint 1 inner circle, be provided with sealing ring 4 between joint screw thread lower end cylindrical and housing 8 upper end inner circles,
Embodiment 2:
Erection sequence of the present invention is: the upper end of self-sealing sleeve 6 is arranged on top connection 1 inside by screw thread, and the upper end inner circle of housing 8 and the cylindrical of top connection 1 are threaded connection, the inner self-sealing sleeve 6 of installing of housing 8; Self-sealing sleeve 6 is inner to be installed from tube sealing 5, from tube sealing 5, by shear pin 2 and self-sealing sleeve 6, is fixed together, and when installation is distributed on four side openings from tube sealing 5 and self-sealing sleeve 6 stage casings, side opening is aimed at and is installed, and just can reach the purpose of circulation canal; Be provided with lock ring groove 13 on tube sealing 5, bottom is equipped with lock ring 9, then self-sealing sleeve 6 lower ends is threaded with stop collar 10; For the purpose sealed, sealing ring 3,4,7 is arranged on respectively in self-sealing sleeve 6, joint 1 and the seal groove on tube sealing 5.
Embodiment 3:
During construction, other instrument needed such as the present invention and packer is sequentially connected on operating tool string by the design tubing string, lower after the design well depth, with completion fluid, in the well head pipe, pump into, in pipe, well killing fluid enters from the endoporus from tube sealing 5 tops, again by being arranged on from tube sealing 5 and self-sealing sleeve 6 relevant positions and four uniform side openings 12 enter the annular space between self-sealing sleeve 6 and housing 8, set up from the setting ball seat upper tube to replacing the well killing fluid circulation canal in lower tube, well killing fluid in having replaced pipe, in the time of need to setting downhole packer, setting ball is dropped into, setting ball is sitting on ball seat 11, then continue to increase pressure, while making pressure rise to certain value, shear pin 2 is cut off, after shear pin 2 is cut off, lose the support of shear pin 2 from tube sealing 5, will under the promotion of pressure, move downward, in the motion process downward from tube sealing 5, because lock ring 9 is withstood by the stop collar upper surface of its lower end, therefore be irremovable, so, lock ring 9 can enter in lock ring groove 13, pinning is from tube sealing 5, making can not be to top offset from tube sealing 5, simultaneously, arrive the bottom of stop collar 10 from the bottom of tube sealing 5, and limit its downward displacement by stop collar 10, when when tube sealing 5 moves down, the sealing ring 7 be arranged on from tube sealing 5 cylindricals can move to from the top of side opening 12 bottom of side opening 12, simultaneously, due to the relative shift with self-sealing sleeve 6 from tube sealing 5, make the side opening 12 of original corresponding setting no longer corresponding, therefore, sealed the passage that leads to annular space between self-sealing sleeve 6 and housing 8, reached the purpose of sealing side opening 12, at this moment, the present invention has just completed the purpose of shutoff.
Claims (3)
1. a self-sealing setting ball seat, comprise self-styled mechanism and shell mechanism, it is characterized in that: described self-styled mechanism comprises from tube sealing, self-sealing sleeve and stop collar, in tube sealing is arranged on self-sealing sleeve, be provided with the lock ring groove in the bottom from tube sealing, afterbody from tube sealing is equipped with lock ring, from tube sealing and the corresponding position of self-sealing sleeve, is being evenly equipped with respectively four side openings; Shell mechanism comprises housing and joint, and housing is with joint by being threaded, and the upper end of self-sealing sleeve is connected with the internal thread of joint, and self-sealing sleeve lower end and stop collar are threaded connection; Described lock ring groove upper surface is the conical surface, and lower surface is vertical with axis; Describedly from tube sealing and self-sealing sleeve, by shear pin, fixed.
2. self-sealing setting ball seat according to claim 1 is characterized in that: at described self-sealing sleeve and be provided with sealing ring between tube sealing, between self-sealing sleeve and joint inner circle, be provided with sealing ring.
3. self-sealing setting ball seat according to claim 1, is characterized in that: between joint screw thread lower end cylindrical and housing upper end inner circle, be provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010216311.3A CN101881142B (en) | 2010-07-02 | 2010-07-02 | Self-sealing setting ball seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010216311.3A CN101881142B (en) | 2010-07-02 | 2010-07-02 | Self-sealing setting ball seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101881142A CN101881142A (en) | 2010-11-10 |
| CN101881142B true CN101881142B (en) | 2014-01-01 |
Family
ID=43053262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010216311.3A Active CN101881142B (en) | 2010-07-02 | 2010-07-02 | Self-sealing setting ball seat |
Country Status (1)
| Country | Link |
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| CN (1) | CN101881142B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840163B (en) * | 2015-01-15 | 2019-03-12 | 深圳市百勤石油技术有限公司 | Ball seat component and pitching sliding sleeve fracturing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190694Y (en) * | 1993-11-22 | 1995-03-01 | 王可亮 | Lock ring type oil leaking device |
| CN201170062Y (en) * | 2008-03-11 | 2008-12-24 | 中国石油天然气股份有限公司 | Oil manifold uncoupling machine |
| CN201321834Y (en) * | 2008-12-31 | 2009-10-07 | 大庆油田有限责任公司 | Underground self-sealing by-pass switch |
| CN201428417Y (en) * | 2009-05-25 | 2010-03-24 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Pressure-balancing set packer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047298U (en) * | 1989-04-17 | 1989-11-08 | 牡丹江市新荣石油机械厂 | Under-ground blocking preventive by-passs circulating joint |
| WO2004013461A1 (en) * | 2002-08-01 | 2004-02-12 | Baker Hughes Incorporated | Gravel pack crossover tool with check valve in the evacuation port |
| CN201013303Y (en) * | 2006-11-08 | 2008-01-30 | 四川石油管理局井下作业公司 | Weighting drill stem plug-catch spraying-proof device with plug-catch screen pipe |
| CN201110159Y (en) * | 2007-11-23 | 2008-09-03 | 新疆石油管理局钻井工艺研究院 | Tool for ir-drill bung half-distance cementing |
| CN201310319Y (en) * | 2008-12-16 | 2009-09-16 | 西部钻探克拉玛依钻井工艺研究院 | Half-way cementing tool without drilling plug |
| CN201723196U (en) * | 2010-07-02 | 2011-01-26 | 中国石油集团川庆钻探工程有限公司 | Self-sealing setting ball seat |
-
2010
- 2010-07-02 CN CN201010216311.3A patent/CN101881142B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190694Y (en) * | 1993-11-22 | 1995-03-01 | 王可亮 | Lock ring type oil leaking device |
| CN201170062Y (en) * | 2008-03-11 | 2008-12-24 | 中国石油天然气股份有限公司 | Oil manifold uncoupling machine |
| CN201321834Y (en) * | 2008-12-31 | 2009-10-07 | 大庆油田有限责任公司 | Underground self-sealing by-pass switch |
| CN201428417Y (en) * | 2009-05-25 | 2010-03-24 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Pressure-balancing set packer |
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| CN101881142A (en) | 2010-11-10 |
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| PB01 | Publication | ||
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Effective date of registration: 20201012 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: 610051, Sichuan Province, Chenghua District, Chengdu two ring road, paragraph 6, four North Ruifeng Lane Patentee before: DOWNHOLE OPERATION COMPANY, CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
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| TR01 | Transfer of patent right |