CN2743527Y - Lock block type oil pumping rod relieve and joining device - Google Patents
Lock block type oil pumping rod relieve and joining device Download PDFInfo
- Publication number
- CN2743527Y CN2743527Y CN 200420108833 CN200420108833U CN2743527Y CN 2743527 Y CN2743527 Y CN 2743527Y CN 200420108833 CN200420108833 CN 200420108833 CN 200420108833 U CN200420108833 U CN 200420108833U CN 2743527 Y CN2743527 Y CN 2743527Y
- Authority
- CN
- China
- Prior art keywords
- center
- sliding sleeve
- butt tube
- step surface
- butt
- Prior art date
- 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 - Fee Related
Links
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model discloses a lock block type oil pumping rod releasing and joining device, used for butt-jointing and relieving well oil pumping rods. The lower part assembly of the lock block type releasing and joining device is made up by a spring seat joint, a spacing spring, a center butt joint pipe, a sliding sleeve spring, a spacing head, a sliding sleeve, a lock block and a spacing cover. A butt joint head is connected with an oil pumping rod pole. The butt joint and release of the butt joint head and the center butt-jointing pipe can be realized by utilizing the lock block. The main components of the releasing and joining device are integral structures. The releasing and joining device has high mechanical strength, big bearing capacity, long service life, agile and reliable release and joining and easy construction and operation.
Description
Technical field
The utility model relates to oil development downhole tool technical field, is a kind of lock dog formula sucker rod on-off connector that is used for down-hole sucker rod butt joint and throws off.
Background technology
Existing sucker rod on-off connector mostly is to be split-type spring detent structure with the pulling head that sucker rod is gone into the well, existing the easy deformation that is collided in the transportation and the process of going into the well causes butt joint unsuccessful, the butt joint back is in the pumping process, because split-type spring detent intensity is low, each spring detent unbalance stress causes fracture etc., cause fatigue failure in advance, cause on-off connector malfunctioning, oil well stopping production well workover.
Technology contents
The purpose of this utility model is to provide a kind of uncoupling flexibility and reliability, and supporting capacity is big, a kind of lock dog formula sucker rod on-off connector of long service life.
The utility model is at fixedly connected center, the upper end of spring abutment joint butt tube, the center butt tube has three different outer wall calibers from the bottom to top, two transition are connected with step surface with step surface one respectively between the adjacent outer wall caliber, symmetry is offered at least two side direction through holes on a circumference at the center butt tube between two step surfaces, and size, the shape of each side direction through hole are identical; In the butt tube of center, arrange spacing head, the lower end of spacing head is supported on the limit spring that is positioned at the center butt tube, the outer wall of spacing head is provided with a step surface, and this step surface is relative with the inwall step surface of the center butt tube that is positioned at the through hole below, the conical surface that the upper end of spacing head has indent; Outside the butt tube of center, arrange sliding sleeve, the caliber epimere of sliding sleeve inwall is little, hypomere is big, connect by the step surface transition between the last hypomere, the sliding sleeve epimere is engaged on the step surface two of center butt tube, the sliding sleeve hypomere is engaged in the interlude of center butt tube, the sliding sleeve lower end is supported on the center butt tube step surface one by spring, is provided with outside scrobicular ring on the hypomere wall of sliding sleeve; Be respectively equipped with a lock dog in each through hole of above-mentioned center symmetry tubes, the thickness of lock dog is greater than the radial thickness of through hole; Butt joint is provided with tapered lower end portion, is provided with the hollow toroid step between bottom and bar portion; The upper end of center butt tube is provided with the sliding sleeve stopping means.
Advantage of the present utility model is: utilize lock dog the achieve a butt joint head and the butt joint and the disengagement of center butt tube, the on-off connector critical piece is an overall structure, the mechanical strength height, and supporting capacity is big, long service life, the uncoupling flexibility and reliability is easy to constructing operation.
Described sliding sleeve stopping means is a stop collar, and stop collar is connected the upper end of center butt tube, and the external diameter of stop collar is less than the external diameter of sliding sleeve.
Description of drawings
Fig. 1 is the structural representation of the utility model mated condition.
Fig. 2 is the structural representation of the utility model disengaged position.
Fig. 3 is an A-A profile among Fig. 2.
Concrete enforcement
Among the figure, spring abutment joint 1, screw 2, limit spring 3, center butt tube 4, sliding sleeve spring 5, spacing 6, sliding sleeve 7, lock dog 8, butt joint 9, stop collar 10, step surface 1, step surface 2 12, side direction through hole 13, step surface 14, step surface 15, the conical surface 16, step surface 17, scrobicular ring 18, hollow toroid step 19.
Screw 2 fixedly connected center butt tubes 4 are passed through in upper end at spring abutment joint 1.Center butt tube 4 has three different outer wall calibers from the bottom to top, and 2 12 transition are connected with step surface with step surface 1 respectively between the adjacent outer wall caliber, are threaded in the upper end of center butt tube 4-stop collar 10.Symmetry is offered four side direction through holes 13 on a circumference at the center butt tube 4 between two step surfaces one 11,2 12, and size, the shape of each side direction through hole 13 are identical, can be rectangular opening, also can be cylindrical hole.
Arrange spacing 6 in the center butt tube 4, spacing 6 lower end is supported on the limit spring 3 that is positioned at center butt tube 4, spacing 6 outer wall is provided with a step surface 14, this step surface 14 is relative with the inwall step surface 15 of the center butt tube 4 that is positioned at four side direction through hole 13 belows, and spacing 6 upper end has the conical surface 16 of indent.
The center butt tube 4 outer sliding sleeves 7 of arranging, the caliber epimere of sliding sleeve 7 inwalls is little, hypomere is big, connect with step surface 17 transition between the last hypomere, sliding sleeve 7 epimeres are engaged on the step surface 2 12 of center butt tube 4 by step surface 17, sliding sleeve 7 hypomeres are engaged in the interlude of center butt tube 4, and sliding sleeve 7 lower ends are supported on the step surface 1 of center butt tube 4 by sliding sleeve spring 5.The hypomere inwall of sliding sleeve 7 is provided with outside scrobicular ring 18.
Be respectively equipped with a lock dog 8 in four side direction through holes 13 of center symmetry tubes 4, the thickness that lock dog 8 makes progress in center symmetry tubes 4 footpaths is greater than the radial thickness of side direction through hole 13.
Butt joint 9 is provided with tapered lower end portion, is provided with hollow toroid step 19 between bottom and bar portion.
The external diameter of stop collar 10 is less than the external diameter of sliding sleeve 7.
As shown in the figure, form lock dog formula on-off connector bottom assembly by spring abutment joint 1, screw 2, limit spring 3, center butt tube 4, sliding sleeve spring 5, spacing 6, sliding sleeve 7, lock dog 8, stop collar 10, butt joint 9 is connected with the top rod string.
During work, on-off connector bottom assembly is connected on pump plunger top and goes into the well thereupon, butt joint 9 is gone into the well with rod string, when butt joint 9 enters center butt tube 4, it is descending that butt joint 9 will promote spacing 6 compression limit spring 3, when spacing 6 with after spring abutment joint 1 end face contacts, the groove of butt joint 9 arrives the position of lock dog 8, lock dog 8 inboard unrestricted parts, and sliding sleeve 7 is under the elastic force effect of sliding sleeve spring 5, promoting lock dog 8 inwardly moves, enter in the groove of butt joint 9, sliding sleeve 7 continues uply to stop when running into stop collar 10, at this moment, utilize lock dog 8 that center butt tube 4 is connected with butt joint 9, form the docking operation of on-off connector.
During the oil well pump detection and workover, on carry rod string, when sliding sleeve 8 arrives the control joint that is connected with tubing string, sliding sleeve 8 is blocked and can not passes through, it is descending then to compress sliding sleeve spring 5 relative center butt tubes 4, when limited step in the sliding sleeve 8 goes downwards to center butt tube 4 steps, sliding sleeve 7 internal recess arrive the position of lock dog 8, the unrestricted parts in lock dog 8 outsides, butt joint 9 promotes lock dog 8 and outwards moves, and enters in sliding sleeve 7 grooves, and butt joint 9 and center butt tube 4 are thrown off, spacing 6 up under the promotion of limit spring 3, recovers reset condition.
Claims (2)
1, lock dog formula sucker rod on-off connector, it is characterized in that at fixedly connected center, the upper end of spring abutment joint butt tube, the center butt tube has three different outer wall calibers from the bottom to top, two transition are connected with step surface with step surface one respectively between the adjacent outer wall caliber, symmetry is offered at least two side direction through holes on a circumference at the center butt tube between two step surfaces, and size, the shape of each side direction through hole are identical; In the butt tube of center, arrange spacing head, the lower end of spacing head is supported on the limit spring that is positioned at the center butt tube, the outer wall of spacing head is provided with a step surface, and this step surface is relative with the inwall step surface of the center butt tube that is positioned at the through hole below, the conical surface that the upper end of spacing head has indent; Outside the butt tube of center, arrange sliding sleeve, the caliber epimere of sliding sleeve inwall is little, hypomere is big, connect by the step surface transition between the last hypomere, the sliding sleeve epimere is engaged on the step surface two of center butt tube, the sliding sleeve hypomere is engaged in the interlude of center butt tube, the sliding sleeve lower end is supported on the center butt tube step surface one by spring, is provided with outside scrobicular ring on the hypomere wall of sliding sleeve; Be respectively equipped with a lock dog in each through hole of above-mentioned center symmetry tubes, the thickness of lock dog is greater than the radial thickness of through hole; Butt joint is provided with tapered lower end portion, is provided with the hollow toroid step between bottom and bar portion; The upper end of center butt tube is provided with the sliding sleeve stopping means.
2, according to the described lock dog formula of claim 1 sucker rod on-off connector, it is characterized in that described sliding sleeve stopping means is a stop collar, stop collar is connected the upper end of center butt tube, and the external diameter of stop collar is less than the external diameter of sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420108833 CN2743527Y (en) | 2004-11-15 | 2004-11-15 | Lock block type oil pumping rod relieve and joining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420108833 CN2743527Y (en) | 2004-11-15 | 2004-11-15 | Lock block type oil pumping rod relieve and joining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2743527Y true CN2743527Y (en) | 2005-11-30 |
Family
ID=35633546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420108833 Expired - Fee Related CN2743527Y (en) | 2004-11-15 | 2004-11-15 | Lock block type oil pumping rod relieve and joining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2743527Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464601A (en) * | 2015-12-24 | 2016-04-06 | 中国石油天然气股份有限公司 | Multipurpose releasing tool capable of being used for continuous operation |
| CN106677753A (en) * | 2017-02-28 | 2017-05-17 | 曾海江 | Downhole pipe type under-pressure oil extraction device |
-
2004
- 2004-11-15 CN CN 200420108833 patent/CN2743527Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464601A (en) * | 2015-12-24 | 2016-04-06 | 中国石油天然气股份有限公司 | Multipurpose releasing tool capable of being used for continuous operation |
| CN106677753A (en) * | 2017-02-28 | 2017-05-17 | 曾海江 | Downhole pipe type under-pressure oil extraction device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201650256U (en) | Ball seat type cracking slide sleeve | |
| CN101624901B (en) | Anchoring device of screw pump | |
| CN2743527Y (en) | Lock block type oil pumping rod relieve and joining device | |
| CN202946065U (en) | Fracturing releasing device | |
| CN201486495U (en) | Screw pump anchor | |
| CN101871332A (en) | Multi-way releasing device | |
| CN201269059Y (en) | Down-hole clamping apparatus used for plunger gas lift | |
| CN202326196U (en) | Ultra-long stroke oil pump barrel | |
| CN202038805U (en) | Semiautomatic draw pin type clamp ring | |
| CN203655217U (en) | Novel releasing packer | |
| CN201460779U (en) | Reciprocating hydraulic tube-drawing machine | |
| CN201723189U (en) | Multi-way releasing device | |
| CN115111146A (en) | Anti-abrasion load-shedding oil pumping device of three-dimensional curved well and using method thereof | |
| CN101109375A (en) | Two-stage down-hole pipe pump oil extracting device | |
| CN202039791U (en) | Built-in fixed sucker rod centralizer | |
| CN200968279Y (en) | Pole special for trapezium side-plug-in dropping stop screw pump well | |
| CN2934555Y (en) | Oil pipe tension anchoring compensator | |
| CN215927761U (en) | Long-acting oil well pump connecting-tripping device | |
| CN101624902B (en) | Anchor for coaxially bidirectionally anchoring oil pump | |
| CN201326535Y (en) | Double-plunger suspended anti-airlock oil pump | |
| CN2739344Y (en) | Hydraulic stripper joint | |
| CN2744826Y (en) | Thermal recovery horizontal well casing prestress completion device | |
| CN2929149Y (en) | Vortex rigid sleeve tube centralizer | |
| CN204239210U (en) | A kind of ultra-long-stroke oil well pump | |
| CN2926580Y (en) | Multi-stage sandproof oil pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |