CN201778707U - Disfunctional safety release with plug-in butt joint - Google Patents
Disfunctional safety release with plug-in butt joint Download PDFInfo
- Publication number
- CN201778707U CN201778707U CN201020289837XU CN201020289837U CN201778707U CN 201778707 U CN201778707 U CN 201778707U CN 201020289837X U CN201020289837X U CN 201020289837XU CN 201020289837 U CN201020289837 U CN 201020289837U CN 201778707 U CN201778707 U CN 201778707U
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- CN
- China
- Prior art keywords
- joint
- jointing
- urceolus
- top connection
- lower contact
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a difunctional safety release with a plug-type butt joint, which is applied to downhole operations in an oil-gas field. The safety release is characterized in that the upper end of a lower joint is in threaded connection with an outer cylinder; left-hand trapezoidal threads are formed on the inner wall of the lower joint; the lower end of a back-off joint is connected to the left-hand trapezoidal threads of the lower joint; symmetric circular arc-shaped grooves are formed on the outer wall at the upper end of the back-off joint; circular arc-shaped inserting blocks are formed at the lower end of an attachment joint; the circular arc-shaped inserting blocks of the attachment joint are inserted into the circular arc-shaped grooves of the back-off joint; the cylindrical attachment joint is arranged in the outer cylinder; a cylinder-shaped lock catch is arranged in the attachment joint; the lock catch and the attachment joint are fixed together through a lower pin; and the attachment joint is threaded connection with an upper joint, and is fixed with the upper joint through an upper pin. The utility model has the effects that the safety release integrates the functions of a hydraulic release and a rotational pipe column release, and reduces the risk that a well completion tool is hard to release after being tripped in during open hole well construction.
Description
Technical field
The utility model relates to the oil gas field production technical field, and particularly a kind of downhole safety special tool is a kind of when completion tool is inserted the down-hole or complex situations occurred, can in time disconnect and safety trips out the safe releasing tool of top tubing string.
Background technology
The used safety of oil gas field is given up and is mainly contained that left-hand thread is given up, hydraulic pressure is given up and machinery is given up, and function is comparatively single, be not suitable for combination usually and be suitable for, or combination back tool string is comparatively complicated.At present, increasing of horizontal well, the completion of particularly long horizontal segment open hole well gas well, need to adopt drilling rod that down-hole open hole packer and completion tubular column are lowered to, if adopting stuff gives up, influenced by hole deviation or other factors, causing can't the not in place or too high situation of pressure of giving up of steel ball, if adopt rotation mode to give up, may exist tubing string to be difficult to rotate or the downhole tool string is not completely fixed, the possibility that causes rotational release to lose efficacy, therefore adopt the single mode of giving up, when the function of giving up is unreliable, will bring greatly inconvenience to follow-up construction, also may cause the tremendous economic loss.Chinese patent publication number: CN2729299 provides a kind of " oil production by layer back-off packer ".Retaining mechanism adopts cyclic spring sawtooth lock ring to be meshed with lock tube, can bear bigger operating pressure when making packer setting, and it is safe and reliable to sit card; Relieving mechanism adopts the release piece of coaxial annular split to mesh with triangle thread and central tube, and during deblocking, the domination of the controlled part of release piece is thrown off central tube and caused packing element to discharge, and pine blocks and the realization deblocking slips.This packer has solved and has set not firm and the problem of deblocking in advance.Not only be suitable for the laminated distributor under well operation, can do bridging plug and use.
The utility model content
The purpose of this utility model is: provide a kind of difunctional safety of inserting butt joint to give up, realize that hydraulic pressure gives up and rotate the tubing string two kinds of functions of giving up, if hydraulic pressure is given up during failure, can realize that safety give up by the rotation tubing string.
The technical solution adopted in the utility model is: the difunctional safety that can insert butt joint is given up, mainly form by lower contact, back-off joint, urceolus, locking catch, time pin, jointing, middle pin, top connection, last pin and sliding sleeve, there is external screw thread the lower end of lower contact, can connect the bottom oil pipe.It is characterized in that: there is internal thread the upper end of lower contact, and urceolus is threaded on the lower contact.The left-hand thread trapezoidal thread is arranged on the inwall of lower contact, on lower contact left-hand thread trapezoidal thread, connect the lower end of back-off joint; The upper end outer wall of back-off joint has the circular groove of symmetry, and the circular arc of jointing lower end is inserted piece, and the circular arc of jointing is inserted in the circular groove that piece inserts the back-off joint, can transfer torque; Jointing cylindraceous has cylindrical lock catch in jointing in urceolus, locking catch and jointing pass through dowel fixes down.Between jointing upper end and outer tube inner wall annular space is arranged, jointing is threaded with top connection and by middle dowel fixes; Top connection is in urceolus, and there is internal thread the top connection upper end, can be connected with oil pipe.A cylindrical shape sliding sleeve is arranged in top connection, adopt between sliding sleeve and the top connection and go up dowel fixes; There is scalene cone upper end at sliding sleeve, and scalene cone is a ball seat, and steel ball can be enclosed in the sliding sleeve upper end by seat.
In order to improve sealing, between lower contact and urceolus, sealing ring is arranged; Between urceolus and top connection, sealing ring is arranged; Between top connection and sliding sleeve, sealing ring is arranged.
Summary can be inserted the operating principle that the difunctional safety of butt joint is given up: consult Fig. 1.The mode of giving up be divided into the rotation tubing string give up and hydraulic pressure give up.The rotation tubing string is given up: after down-hole string is fixed by suspension, packer or alternate manner, can finish by positive tube post and to give up.Down-hole residue lower contact 1 and urceolus 4 after giving up.Hydraulic pressure is given up: drop into steel ball 12 from well head, well head adds hydraulic pressure, and 12 of steel balls are enclosed in sliding sleeve 11 upper ends, and sliding sleeve 11 moves down, and locking catch 5 lower ends lose the supporting role retraction, and the upper lifting pipe post is finished and given up.The down-hole remainder is lower contact 1, back-off joint 2 and urceolus 4.Urceolus 4 inner surfaces are smooth, can supporting sealing insert the butt joint that device is realized tubing string after giving up.
The beneficial effects of the utility model: the utility model can insert the difunctional safety of butt joint and give up, can realize hydraulic pressure, tubing string is difunctional gives up in rotation, further reduced the risk that is difficult to give up after open hole well construction completion tool is lowered to, down-hole, the back reservation sealing of giving up is inserted extend neck, can directly dock with the productive completion tubing string.
Description of drawings
Fig. 1 is difunctional safety that the utility model can the insert butt joint structural profile schematic diagram of giving up.
Fig. 2 is the A-A generalized section of Fig. 1.
Among the figure, 1. lower contact, 2. back-off joint, 3. sealing ring, 4. urceolus, 5. locking catch 6. descends pin, 7. jointing, 8. in pin, pin is 10. gone up in 9. top connection, 11. sliding sleeves, 12. steel balls.
The specific embodiment
Embodiment 1: giving up with the difunctional safety that can insert butt joint is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model can insert the difunctional safety of butt joint and give up, form by lower contact 1, back-off joint 2, sealing ring 3, urceolus 4, locking catch 5, time pin 6, jointing 7, middle pin 8, top connection 9, last pin 10 and sliding sleeve 11, there is external screw thread the lower end of lower contact 1, can connect the bottom oil pipe.There is internal thread the upper end of lower contact 1, the lower contact 1 upper end urceolus 4 that is threaded.In lower contact 1 sealing ring 3 is arranged between urceolus 4.The left-hand thread trapezoidal thread is arranged on the inwall of lower contact 1, on lower contact 1 left-hand thread trapezoidal thread, connect the lower end of back-off joint 2.Consult Fig. 2.The upper end outer wall of back-off joint 2 has four circular grooves of symmetry, and the circular arc of jointing 7 lower ends is inserted piece, and the circular arc of jointing 7 is inserted in the circular groove of piece insertion back-off joint 2.Consult Fig. 1.Jointing 7 cylindraceous has a cylindrical lock catch 5 in jointing 7 in urceolus 4, locking catch 5 is fixing by pin under the poem 6 with jointing 7.Between jointing 7 upper ends and urceolus 4 inwalls annular space is arranged, jointing 7 is threaded with top connection 9 and fixes by four middle pins 8; Top connection 9 has two seals circle 3 between urceolus 4 and top connection 9 in urceolus 4.There is internal thread top connection 9 upper ends.A cylindrical shape sliding sleeve 11 is arranged in top connection 9, four road sealing rings 3 are arranged between top connection 9 and sliding sleeve 11.Upward pin 10 is fixing to adopt four between sliding sleeve 11 and the top connection 9; In the upper end of sliding sleeve 11 scalene cone is arranged, scalene cone is a ball seat, and steel ball 12 can be enclosed in sliding sleeve 11 upper ends by seat.
Claims (2)
1. the difunctional safety that can insert butt joint is given up, mainly form by lower contact (1), back-off joint (2), urceolus (4), locking catch (5), time pin (6), jointing (7), middle pin (8), top connection (9), last pin (10) and sliding sleeve (11), there is external screw thread the lower end of lower contact (1), it is characterized in that: there is internal thread the upper end of lower contact (1), urceolus (4) is threaded on the lower contact (1), the left-hand thread trapezoidal thread is arranged on the inwall of lower contact (1), on lower contact (1) left-hand thread trapezoidal thread, connect the lower end of back-off joint (2); The upper end outer wall of back-off joint (2) has the circular groove of symmetry, and the circular arc of jointing (7) lower end is inserted piece, and the circular arc of jointing (7) is inserted in the circular groove of piece insertion back-off joint (2); Jointing cylindraceous (7) has cylindrical lock catch (5) in jointing (7) in urceolus (4), pin (6) was fixing under locking catch (5) passed through with jointing (7); Between jointing (7) upper end and urceolus (4) inwall annular space is arranged, jointing (7) is threaded with top connection (9) and is fixing by middle pin (8); Top connection (9) is in urceolus (4), and there is internal thread top connection (9) upper end, and a cylindrical shape sliding sleeve (11) is arranged in top connection (9), and upward pin (10) is fixing in employing between sliding sleeve (11) and the top connection (9); There is scalene cone upper end at sliding sleeve (11).
2. the difunctional safety of inserting butt joint according to claim 1 is given up, and it is characterized in that: between lower contact (1) and urceolus (4) sealing ring (3) is arranged; Between urceolus (4) and top connection (9), sealing ring (3) is arranged; Between top connection (9) and sliding sleeve (11), sealing ring (3) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020289837XU CN201778707U (en) | 2010-08-12 | 2010-08-12 | Disfunctional safety release with plug-in butt joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020289837XU CN201778707U (en) | 2010-08-12 | 2010-08-12 | Disfunctional safety release with plug-in butt joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201778707U true CN201778707U (en) | 2011-03-30 |
Family
ID=43791920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020289837XU Expired - Lifetime CN201778707U (en) | 2010-08-12 | 2010-08-12 | Disfunctional safety release with plug-in butt joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201778707U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422031A (en) * | 2015-12-18 | 2016-03-23 | 贵州高峰石油机械股份有限公司 | Method and device for improving hydraulic releasing working reliability |
| CN105443057A (en) * | 2015-12-08 | 2016-03-30 | 中国石油天然气集团公司 | Torque-withstanding type double-acting releasing tool |
| CN105525884A (en) * | 2014-09-28 | 2016-04-27 | 中国石油化工集团公司 | Pipe column feeding tool with double releasing mechanisms |
| CN109339725A (en) * | 2018-11-05 | 2019-02-15 | 中国海洋石油总公司 | Releasing device |
-
2010
- 2010-08-12 CN CN201020289837XU patent/CN201778707U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525884A (en) * | 2014-09-28 | 2016-04-27 | 中国石油化工集团公司 | Pipe column feeding tool with double releasing mechanisms |
| CN105525884B (en) * | 2014-09-28 | 2017-12-19 | 中国石油化工集团公司 | A kind of tubing string running tool with double relieving mechanisms |
| CN105443057A (en) * | 2015-12-08 | 2016-03-30 | 中国石油天然气集团公司 | Torque-withstanding type double-acting releasing tool |
| CN105443057B (en) * | 2015-12-08 | 2018-10-16 | 中国石油天然气集团公司 | Bearing torque formula Double-acting releasing tool |
| CN105422031A (en) * | 2015-12-18 | 2016-03-23 | 贵州高峰石油机械股份有限公司 | Method and device for improving hydraulic releasing working reliability |
| CN109339725A (en) * | 2018-11-05 | 2019-02-15 | 中国海洋石油总公司 | Releasing 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: 20110330 |