CN201771464U - Slip combined oil pumping rod blowout preventer - Google Patents
Slip combined oil pumping rod blowout preventer Download PDFInfo
- Publication number
- CN201771464U CN201771464U CN2010202596685U CN201020259668U CN201771464U CN 201771464 U CN201771464 U CN 201771464U CN 2010202596685 U CN2010202596685 U CN 2010202596685U CN 201020259668 U CN201020259668 U CN 201020259668U CN 201771464 U CN201771464 U CN 201771464U
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- China
- Prior art keywords
- slips
- slip
- locking
- sucker rod
- die cavity
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- Expired - Fee Related
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Abstract
The utility model provides a slip combined oil pumping rod blowout preventer, which comprises a body, a single gate plate assembly and a slip locking assembly. The slip locking assembly includes slips, slip locking shafts, slip locking lead screws, slip lateral doors, slip locking pressing covers and pressing heads. Slip cavities for placing the slips are symmetrically arranged on two sides of a main through hole of the body on the upper portion of a semi-sealed gate plate cavity, the slip lateral doors, the slip locking pressing covers and the pressing heads are sequentially mounted on the outer sides of the slip cavities, the inner end and the outer end of each slip locking shaft are respectively connected with the corresponding slip and the slip locking lead screw, locking nuts are arranged on the slip locking lead screws among the slip locking shafts and the slip locking pressing cover, and an operating gap for operating the locking nuts are reserved on the slip lateral doors. The slip combined oil pumping rod blowout preventer is more reasonable in structure due to the slip assembly additionally arranged on an existing single gate plate oil pumping rod blowout preventer, remarkably reinforces the locking effect of an oil pumping rod, effectively prevents the oil pumping rod from upward jumping, falling into a well bottom and leaking, and improves safety reliability of the preventer.
Description
Technical field
The utility model belongs to the petroleum machinery technical field, specifically, relates to a kind of slips combined type sucker rod preventer.
Background technology
In the operation and well workover process of pumpingh well, tripping out through regular meeting of sucker rod produces the phenomenon that well kick overflow, sucker rod are scurried out and hurted sb.'s feelings, even contingency such as blowout takes place, and for guaranteeing the safety of constructor and equipment, adopts the sucker rod preventer usually.Can existing sucker rod preventer, be generally the single disc structure, its clamp and sealing performance limited, when borehole pressure was big, sucker rod is play up and down, even falls in the well, not only the salvaging of sucker rod is wasted time and energy, and influence is produced, and the more important thing is that security reliability is low.
The utility model content
For overcoming the deficiencies in the prior art, the utility model provides a kind of rational in infrastructure, slips combined type sucker rod preventer that security reliability is strong.
The technical scheme that its technical problem that solves the utility model adopts is: the single disc sucker rod preventer that comprises body and single disc assembly, be provided with to body master latus rectum bilateral symmetry half envelope flashboard die cavity, two cover single disc assemblies are sub-packed in above-mentioned partly the envelope in the flashboard die cavity; It is characterized in that: also comprise the slips locking assembly that comprises slips, slips lock shaft, slips locking leading screw, slips side door, slips locking gland and hold-down head; Also be provided with the slips die cavity symmetrically in the body master latus rectum both sides of partly sealing flashboard die cavity top, slips places in the slips die cavity, and the outside of slips die cavity is equipped with slips side door, slips locking gland and hold-down head successively; The inner of slips lock shaft links to each other with slips, and its outer end links to each other with slips locking leading screw by screw thread; Slips locking leading screw between above-mentioned slips lock shaft and the slips locking gland is provided with locking nut, and leaves corresponding operation space on the slips side door corresponding to this locking nut place.
Above-mentioned slips is the smooth anodontia slips of its intrados, traditional has the tooth slips can cause the sucker rod surface damage when the locking sucker rod to solve, influence preventer and seal well head, cause problems such as blowout and contaminated environment.
Offer the horizontally disposed stress groove in two to six roads on the intrados of above-mentioned slips, to solve the stressed easily cracked problem of slips.
The groove depth of above-mentioned stress groove is 2～3 millimeters, and groove width is 3～4 millimeters.
The beneficial effects of the utility model are: owing to had additional the slips assembly in existing single disc sucker rod preventer, thereby its structure is more reasonable, locking effect to sucker rod significantly strengthens, prevented effectively sucker rod on scurry, fall into the generation of shaft bottom and leakage phenomenon, improved the security reliability of preventer.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Among the figure: 1 for body, 2 be half envelope flashboard, 3 be half block mandrel, 4 be half envelope side door, 5 be half sealed cover, 6 be half block tight leading screw, 7 for slips, 7-1 be the stress groove, 8 for slip spider, 9 for the slips lock shaft, 10 for the slips side door, 11 for the operation space, 12 for locking nut, 13 for slips locking leading screw, 13-1 positive stop lug boss, 14 for slips locking gland, 15 be that hold-down head, 16 is a thrust ball bearing.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Slips combined type sucker rod preventer described in the utility model based on existing single disc sucker rod preventer, has been set up slips locking assembly.Referring to Fig. 1, the utility model comprise body 1, partly seal flashboard assembly and slips locking assembly; Be provided with to the main latus rectum bilateral symmetry of body 1 half envelope flashboard die cavity.Described partly seal the flashboard assembly comprise half envelope flashboard 2, partly block mandrel 3, partly seal side door 4, half sealed cover 5 and partly block tight leading screw 6; Two halves envelope flashboard 2 is sub-packed in the two halves envelope flashboard die cavity, and half envelope side door 4 and half sealed cover 5 are housed successively in the outside of partly sealing the flashboard die cavity; Partly block the inner of mandrel 3 and partly seal flashboard 2 and link to each other, its outer end with partly block tight leading screw 6 and link to each other.Also be provided with the slips die cavity symmetrically in the body 1 main latus rectum both sides of partly sealing flashboard die cavity top.Described slips locking assembly comprises slips 7, slips lock shaft 9, slips locking leading screw 13, slips side door 10, slips locking gland 14 and hold-down head 15; Two slips 7 are placed in the above-mentioned two slips die cavities; Described slips 7 is the smooth anodontia slips of its intrados, and offers four roads horizontally disposed stress groove 7-1 on the intrados of slips 7, and the groove depth of stress groove 7-1 is 2～3 millimeters, and groove width is 3～4 millimeters, and bottom land connects for the nature arc chord angle.The outside of slips die cavity is equipped with slips side door 10, slips locking gland 14 and hold-down head 15 successively; The inner of slips lock shaft 9 links to each other with slips 7 by slip spider 8, and its outer end links to each other with slips locking leading screw 13 by screw thread; Slips locking leading screw 13 between above-mentioned slips lock shaft 9 and the slips locking gland 14 is provided with locking nut 12, and leaves operation space 11 on the slips side door 10 corresponding to these locking nut 12 places.On the slips locking leading screw 14 between slips locking gland 14 and the hold-down head 15, be provided with positive stop lug boss 13-1, and be provided with thrust ball bearing 16 in the both sides of positive stop lug boss.
During use, at first the utility model is installed on the well head of oil well.Trip out in the process carrying out sucker rod, two halves flashboard 2, two slips 7 are in released state, phenomenon such as on the well kick overflow of finding, sucker rod, push up, in the time of may producing the blowout accident, rotate two halves rapidly and block tight leading screw 6, make two halves envelope flashboard 2 to main latus rectum central motion, hold sucker rod tightly, well head is sealed; Rotate slips locking leading screw 13 more rapidly, hold two slips 7 tightly sucker rod, then locking nut 12 is tightened to side, prop up slips locking gland 14, thereby make two slips 7 firmly lock sucker rod.
Claims (4)
1. slips combined type sucker rod preventer comprises the single disc sucker rod preventer of body and single disc assembly being provided with to body master latus rectum bilateral symmetry half envelope flashboard die cavity that two cover single disc assemblies are sub-packed in above-mentioned partly the envelope in the flashboard die cavity; It is characterized in that: also comprise the slips locking assembly that comprises slips, slips lock shaft, slips locking leading screw, slips side door, slips locking gland and hold-down head; Also be provided with the slips die cavity symmetrically in the body master latus rectum both sides of partly sealing flashboard die cavity top, slips places in the slips die cavity, and the outside of slips die cavity is equipped with slips side door, slips locking gland and hold-down head successively; The inner of slips lock shaft links to each other with slips, and its outer end links to each other with slips locking leading screw by screw thread; Slips locking leading screw between above-mentioned slips lock shaft and the slips locking gland is provided with locking nut, and leaves corresponding operation space on the slips side door corresponding to this locking nut place.
2. slips combined type sucker rod preventer according to claim 1, it is characterized in that: above-mentioned slips is the smooth anodontia slips of its intrados.
3. slips combined type sucker rod preventer according to claim 1 and 2 is characterized in that: offer the horizontally disposed stress groove in two to six roads on the intrados of above-mentioned slips.
4. slips combined type sucker rod preventer according to claim 3, it is characterized in that: the groove depth of above-mentioned stress groove is 2～3 millimeters, groove width is 3～4 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202596685U CN201771464U (en) | 2010-07-15 | 2010-07-15 | Slip combined oil pumping rod blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202596685U CN201771464U (en) | 2010-07-15 | 2010-07-15 | Slip combined oil pumping rod blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201771464U true CN201771464U (en) | 2011-03-23 |
Family
ID=43751309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202596685U Expired - Fee Related CN201771464U (en) | 2010-07-15 | 2010-07-15 | Slip combined oil pumping rod blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201771464U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239953A (en) * | 2015-10-20 | 2016-01-13 | 胜利方兰德石油装备股份有限公司 | Blowout-preventive operation device for lifting and lowering rod pipe under pressure |
| CN107735545A (en) * | 2015-04-17 | 2018-02-23 | 卡梅伦国际有限公司 | Preventer end coupling |
| CN108979613A (en) * | 2018-09-04 | 2018-12-11 | 盐城市崇达石化机械有限公司 | A kind of energy conservation combined pressure device for fracturing wellhead |
-
2010
- 2010-07-15 CN CN2010202596685U patent/CN201771464U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107735545A (en) * | 2015-04-17 | 2018-02-23 | 卡梅伦国际有限公司 | Preventer end coupling |
| CN105239953A (en) * | 2015-10-20 | 2016-01-13 | 胜利方兰德石油装备股份有限公司 | Blowout-preventive operation device for lifting and lowering rod pipe under pressure |
| CN108979613A (en) * | 2018-09-04 | 2018-12-11 | 盐城市崇达石化机械有限公司 | A kind of energy conservation combined pressure device for fracturing wellhead |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20150715 |
|
| EXPY | Termination of patent right or utility model |