CN202370464U - Fixture block type releasing connector - Google Patents
Fixture block type releasing connector Download PDFInfo
- Publication number
- CN202370464U CN202370464U CN2011205512900U CN201120551290U CN202370464U CN 202370464 U CN202370464 U CN 202370464U CN 2011205512900 U CN2011205512900 U CN 2011205512900U CN 201120551290 U CN201120551290 U CN 201120551290U CN 202370464 U CN202370464 U CN 202370464U
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- sub
- sliding sleeve
- wall
- pipe nipple
- giving
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Abstract
The utility model relates to the technical field of releasing connectors of oil and gas field well drilling hangers and relates to a fixture block type releasing connector which comprises a sliding sleeve, a ball seat, a releasing nipple and a lower outer barrel. The lower portion of an inner cavity of the sliding sleeve is provided with a step hole with the inner diameter smaller than that of the sliding sleeve, the ball seat is fixedly installed in the step hole, an annular groove is arranged on an outer wall of the upper portion of the sliding sleeve, an annular limiting table is arranged on an inner wall of the upper portion of the releasing connector, at least one hole is arranged on the releasing connector corresponding to the middle of the sliding sleeve, and a fixture block is installed in the hole. The sliding sleeve is sleeved in an inner cavity of the releasing connector, the upper end face of the sliding sleeve abuts against the lower end face of the annular limiting table, and the releasing connector below the hole is fixedly installed with an outer wall of the sliding sleeve through a shear pin. The fixture block type releasing connector is reasonable and compact in structure and convenient to use, the release operation is performed by exerting hydraulic pressure, tools do not need to be sent in a rotating mode, the control risks of the number of rotating turns of a drilling tool and torque are avoided, and reliability of the releasing operation of the hangers is improved.
Description
Technical field
the utility model relates to the back-off sub technical field of oilfield drilling hanger, is the back-off sub of a kind of fixture block formula.
Background technology
In the well-completing process of extension hanger, the main body of hanger is connected with the suspension tail pipe
, and hanger is connected with the running tool of tail pipe through releasing tool, and tail pipe is lowered into the design attitude in the well with running tool from well head.In the time of in the hanger seat hangs over the upper strata protective casing, the operation releasing tool is thrown off running tool and hanger body, carry out cementing job after, the proposition running tool is accomplished whole tail tube hanging operations.Hanger releasing tool commonly used at present is trapezoidal left-hand thread nipple, when using this joint, can the trapezoidal left-hand thread screw thread on the releasing tool just be changeed out through being rotated in the forward running tool, and running tool and hanger body are broken away from, and proposes running tool.Adopt the back-off sub of this structure, must rotate running tool, and for high angle hole and horizontal well, because the frictional force of drilling tool and well is bigger, the number of turns and moment of torsion control that drilling tool is sent in rotation there are certain difficulty.
Summary of the invention
the utility model provides the back-off sub of a kind of fixture block formula, has overcome the deficiency of above-mentioned prior art, and it can effectively solve the problem of existing hanger back-off sub for high angle hole and horizontal well operating difficulties.
The technical scheme of
the utility model realizes through following measure: the back-off sub of a kind of fixture block formula comprises sliding sleeve, ball seat, back-off sub, the pipe nipple of giving up, following urceolus; The stepped hole of internal diameter less than sliding sleeve internal diameter arranged at the bottom of sliding sleeve inner chamber, is installed with ball seat in the stepped hole, and the external wall of upper portion of sliding sleeve has annular groove; The annular stop platform is arranged on the upper inside wall of back-off sub; With the corresponding back-off sub in sliding sleeve middle part at least one hole is arranged, fixture block is installed in the hole, sliding sleeve is sleeved in the inner chamber of back-off sub; The lower surface of the upper surface of sliding sleeve and annular stop platform offsets; The back-off sub of below, hole and the outer wall of sliding sleeve are fixedly installed togather through shear pin, on the pipe nipple inwall of giving up of fixture block top annular boss are arranged, and annular boss is sleeved in the back-off sub of top, hole; The outer end of fixture block is positioned at the cavity of the pipe nipple of giving up of annular boss below, and the external wall of upper portion of following urceolus is fixedly installed togather with the lower inner wall of the pipe nipple of giving up.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
The middle part of
above-mentioned back-off sub radially can be evenly distributed with three holes along circumference, is separately installed with fixture block in three holes, the hole be outer little in big taper square hole, fixture block be little outward in big square fixture block.
Outer wall upper edge, the middle part circumference of
above-mentioned pipe nipple of giving up radially evenly can be fixed with at least two wiper block.
Can be installed with sealing ring between the inwall of the back-off sub of external wall of upper portion of
above-mentioned sliding sleeve and annular stop platform below; Be installed with sealing ring between the back-off sub of shear pin below and the sliding sleeve, be installed with sealing ring between the sliding sleeve of sliding sleeve and top, ball seat junction and the ball seat.
Can be installed together through screw between
outer wall of above-mentioned ball seat and the sliding sleeve of stepped hole junction; The external wall of upper portion of following urceolus is fixedly installed togather through screw thread with the lower inner wall of the pipe nipple of giving up; The giving up of pipe nipple and following urceolus threaded connection place below of giving up is installed together through screw between pipe nipple and the following outer drum outer wall; Internal thread is arranged at the top of back-off sub; Internal thread is arranged at the bottom of back-off sub, and internal thread is arranged at the top of the pipe nipple of giving up, and external screw thread is arranged at the bottom of following urceolus.
In the back-off sub of the internal thread top on
above-mentioned back-off sub top screwed hole can be arranged, in the back-off sub of the internal thread below of back-off sub bottom screwed hole arranged, on the pipe nipple of giving up of the internal thread top on the pipe nipple top of giving up screwed hole arranged.
the utility model reasonable and compact in structure, easy to use, through applying the hydraulic pressure operation of giving up, need not to rotate running tool, avoided controlling risk of drilling tool rotating cycle and moment of torsion, improved the give up reliability of operation of hanger.
Description of drawings
accompanying drawing 1 is looked the half section structural representation for the master of the utility model most preferred embodiment.
Coding in
accompanying drawing is respectively: 1 is sliding sleeve, and 2 is stepped hole, and 3 is ball seat, and 4 is annular groove; 5 are back-off sub, and 6 is the annular stop platform, and 7 is the hole, and 8 is fixture block; 9 is shear pin, and 10 are the pipe nipple of giving up, and 11 is annular boss, and 12 are following urceolus; 13 is wiper block, and 14 is screwed hole, and 15 is sealing ring.
The specific embodiment
the utility model does not receive the restriction of following embodiment, can confirm concrete embodiment according to the technical scheme and the actual conditions of the utility model.
are in the utility model; For the ease of describing; The description of the relative position relation of each parts all is to describe according to the Butut mode of Figure of description 1, as: the position relation of forward and backward, upper and lower, left and right etc. is what to confirm according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
shown in accompanying drawing 1, this fixture block formula back-off sub comprises sliding sleeve 1, ball seat 3, back-off sub 5, the pipe nipple 10 of giving up, following urceolus 12; The stepped hole 2 of internal diameter less than sliding sleeve 1 internal diameter arranged at the bottom of sliding sleeve 1 inner chamber; Be installed with ball seat 3 in the stepped hole 2; The external wall of upper portion of sliding sleeve 1 has annular groove 4, and annular stop platform 6 is arranged on the upper inside wall of back-off sub 5, with the corresponding back-off sub 5 in sliding sleeve 1 middle part at least one hole 7 is arranged; Fixture block 8 is installed in hole 7; Sliding sleeve 1 is sleeved in the inner chamber of back-off sub 5, and the lower surface of the upper surface of sliding sleeve 1 and annular stop platform 6 offsets, and the back-off sub 5 of 7 belows, hole is fixedly installed togather through shear pin 9 with the outer wall of sliding sleeve 1; On pipe nipple 10 inwalls of giving up of fixture block 8 tops annular boss 11 is arranged; Annular boss 11 is sleeved in the back-off sub 5 of 7 tops, hole, and the outer end of fixture block 8 is positioned at the cavity of the pipe nipple 10 of giving up of annular boss 11 belows, and the external wall of upper portion of following urceolus 12 is fixedly installed togather with the lower inner wall of the pipe nipple 10 of giving up.
Can according to actual needs above-mentioned fixture block formula back-off sub be done further to optimize or/and improve:
shown in accompanying drawing 1, the middle part of back-off sub 5 radially is evenly distributed with in 7, three holes 7, three holes along circumference and is separately installed with fixture block 8, hole 7 be outer little in big taper square hole, fixture block 8 be little outward in big square fixture block.Big taper square hole is beneficial to fixture block 8 stretching in hole 7 in little outward.
shown in accompanying drawing 1, outer wall upper edge, the middle part circumference of the pipe nipple 10 of giving up radially evenly is fixed with at least two wiper block 13.Wiper block 13 plays certain centralizing function when equipment moves.
are shown in accompanying drawing 1; Be installed with sealing ring 15 between the inwall of the back-off sub 5 of the external wall of upper portion of sliding sleeve 1 and annular stop platform 6 belows; Be installed with sealing ring 15 between the back-off sub 5 of shear pin 9 belows and the sliding sleeve 1, be installed with sealing ring 15 between the sliding sleeve 1 of sliding sleeve 1 and top, ball seat 3 junctions and the ball seat 3.
are shown in accompanying drawing 1; Be installed together through screw between the sliding sleeve 1 of the outer wall of ball seat 3 and stepped hole 2 junctions; The external wall of upper portion of following urceolus 12 is fixedly installed togather through screw thread with the lower inner wall of the pipe nipple 10 of giving up; The giving up of pipe nipple 10 and following urceolus 12 threaded connection places below of giving up is installed together through screw between pipe nipple 10 and following urceolus 12 outer walls, and internal thread is arranged at the top of back-off sub 5, and internal thread is arranged at the bottom of back-off sub 5; Internal thread is arranged at the give up top of pipe nipple 10, and external screw thread is arranged at the bottom of following urceolus 12.
are shown in accompanying drawing 1; In the back-off sub 5 of the internal thread top on back-off sub 5 tops screwed hole 14 is arranged; In the back-off sub 5 of the internal thread below of back-off sub 5 bottoms screwed hole 14 is arranged, on the pipe nipple 10 of giving up of the internal thread top on pipe nipple 10 tops of giving up screwed hole 14 is arranged.
above technical characterictic has constituted the most preferred embodiment of the utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of
the utility model most preferred embodiment: accomplish seat when hanger and hang; In the time of need giving up, add hydraulic pressure after losing copper ball in the drilling tool, cut off shear pin 9 from sending into; Sliding sleeve 1 goes downwards to the lower end; Contract to the annular groove 4 of sliding sleeve 1 external wall of upper portion in the fixture block 8 this moment, and hanger and running tool break away from, and running tool can propose well.
Claims (10)
1. fixture block formula back-off sub is characterized in that comprising sliding sleeve, ball seat, back-off sub, the pipe nipple of giving up, following urceolus; The stepped hole of internal diameter less than sliding sleeve internal diameter arranged at the bottom of sliding sleeve inner chamber, is installed with ball seat in the stepped hole, and the external wall of upper portion of sliding sleeve has annular groove; The annular stop platform is arranged on the upper inside wall of back-off sub; With the corresponding back-off sub in sliding sleeve middle part at least one hole is arranged, fixture block is installed in the hole, sliding sleeve is sleeved in the inner chamber of back-off sub; The lower surface of the upper surface of sliding sleeve and annular stop platform offsets; The back-off sub of below, hole and the outer wall of sliding sleeve are fixedly installed togather through shear pin, on the pipe nipple inwall of giving up of fixture block top annular boss are arranged, and annular boss is sleeved in the back-off sub of top, hole; The outer end of fixture block is positioned at the cavity of the pipe nipple of giving up of annular boss below, and the external wall of upper portion of following urceolus is fixedly installed togather with the lower inner wall of the pipe nipple of giving up.
2. fixture block formula according to claim 1 back-off sub is characterized in that the middle part of back-off sub radially is evenly distributed with three holes along circumference, is separately installed with fixture block in three holes, the hole be outer little in big taper square hole, fixture block be little outward in big square fixture block.
3. fixture block formula according to claim 1 and 2 back-off sub, outer wall upper edge, the middle part circumference of the pipe nipple that it is characterized in that giving up radially evenly is fixed with at least two wiper block.
4. fixture block formula according to claim 1 and 2 back-off sub; It is characterized in that being installed with sealing ring between the inwall of back-off sub of external wall of upper portion and annular stop platform below of sliding sleeve; Be installed with sealing ring between the back-off sub of shear pin below and the sliding sleeve, be installed with sealing ring between the sliding sleeve of sliding sleeve and top, ball seat junction and the ball seat.
5. fixture block formula according to claim 3 back-off sub; It is characterized in that being installed with sealing ring between the inwall of back-off sub of external wall of upper portion and annular stop platform below of sliding sleeve; Be installed with sealing ring between the back-off sub of shear pin below and the sliding sleeve, be installed with sealing ring between the sliding sleeve of sliding sleeve and top, ball seat junction and the ball seat.
6. fixture block formula according to claim 1 and 2 back-off sub; It is characterized in that being installed together through screw between the sliding sleeve of outer wall and stepped hole junction of ball seat; The external wall of upper portion of following urceolus is fixedly installed togather through screw thread with the lower inner wall of the pipe nipple of giving up; The giving up of pipe nipple and following urceolus threaded connection place below of giving up is installed together through screw between pipe nipple and the following outer drum outer wall, and internal thread is arranged at the top of back-off sub, and internal thread is arranged at the bottom of back-off sub; Internal thread is arranged at the give up top of pipe nipple, and external screw thread is arranged at the bottom of following urceolus.
7. fixture block formula according to claim 3 back-off sub; It is characterized in that being installed together through screw between the sliding sleeve of outer wall and stepped hole junction of ball seat; The external wall of upper portion of following urceolus is fixedly installed togather through screw thread with the lower inner wall of the pipe nipple of giving up; The giving up of pipe nipple and following urceolus threaded connection place below of giving up is installed together through screw between pipe nipple and the following outer drum outer wall, and internal thread is arranged at the top of back-off sub, and internal thread is arranged at the bottom of back-off sub; Internal thread is arranged at the give up top of pipe nipple, and external screw thread is arranged at the bottom of following urceolus.
8. fixture block formula according to claim 4 back-off sub; It is characterized in that being installed together through screw between the sliding sleeve of outer wall and stepped hole junction of ball seat; The external wall of upper portion of following urceolus is fixedly installed togather through screw thread with the lower inner wall of the pipe nipple of giving up; The giving up of pipe nipple and following urceolus threaded connection place below of giving up is installed together through screw between pipe nipple and the following outer drum outer wall, and internal thread is arranged at the top of back-off sub, and internal thread is arranged at the bottom of back-off sub; Internal thread is arranged at the give up top of pipe nipple, and external screw thread is arranged at the bottom of following urceolus.
9. fixture block formula according to claim 5 back-off sub; It is characterized in that being installed together through screw between the sliding sleeve of outer wall and stepped hole junction of ball seat; The external wall of upper portion of following urceolus is fixedly installed togather through screw thread with the lower inner wall of the pipe nipple of giving up; The giving up of pipe nipple and following urceolus threaded connection place below of giving up is installed together through screw between pipe nipple and the following outer drum outer wall, and internal thread is arranged at the top of back-off sub, and internal thread is arranged at the bottom of back-off sub; Internal thread is arranged at the give up top of pipe nipple, and external screw thread is arranged at the bottom of following urceolus.
10. fixture block formula according to claim 9 back-off sub; It is characterized in that in the back-off sub of internal thread top on back-off sub top screwed hole being arranged; In the back-off sub of the internal thread below of back-off sub bottom screwed hole is arranged, on the pipe nipple of giving up of the internal thread top on the pipe nipple top of giving up screwed hole is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205512900U CN202370464U (en) | 2011-12-26 | 2011-12-26 | Fixture block type releasing connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205512900U CN202370464U (en) | 2011-12-26 | 2011-12-26 | Fixture block type releasing connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370464U true CN202370464U (en) | 2012-08-08 |
Family
ID=46594171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205512900U Expired - Lifetime CN202370464U (en) | 2011-12-26 | 2011-12-26 | Fixture block type releasing connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370464U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726803A (en) * | 2013-12-20 | 2014-04-16 | 安东石油技术（集团）有限公司 | Oil-gas well tail pipe hanger protecting device |
| CN106499350A (en) * | 2016-12-01 | 2017-03-15 | 孙东生 | A kind of waterpower solution lock-switch and packer control device |
| CN106869838A (en) * | 2017-03-23 | 2017-06-20 | 中国石油集团西部钻探工程有限公司 | Hydraulic release device |
-
2011
- 2011-12-26 CN CN2011205512900U patent/CN202370464U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726803A (en) * | 2013-12-20 | 2014-04-16 | 安东石油技术（集团）有限公司 | Oil-gas well tail pipe hanger protecting device |
| CN103726803B (en) * | 2013-12-20 | 2016-07-20 | 安东石油技术（集团）有限公司 | Oil/gas Well extension hanger preventer |
| CN106499350A (en) * | 2016-12-01 | 2017-03-15 | 孙东生 | A kind of waterpower solution lock-switch and packer control device |
| CN106499350B (en) * | 2016-12-01 | 2018-11-30 | 孙东生 | A kind of waterpower solution lock-switch and packer control device |
| CN106869838A (en) * | 2017-03-23 | 2017-06-20 | 中国石油集团西部钻探工程有限公司 | Hydraulic release device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |