CN203403853U - Cylindrical blowout preventer for hydraulic control sucker rod - Google Patents
Cylindrical blowout preventer for hydraulic control sucker rod Download PDFInfo
- Publication number
- CN203403853U CN203403853U CN201320485016.7U CN201320485016U CN203403853U CN 203403853 U CN203403853 U CN 203403853U CN 201320485016 U CN201320485016 U CN 201320485016U CN 203403853 U CN203403853 U CN 203403853U
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- CN
- China
- Prior art keywords
- rubber core
- glue core
- blowout preventer
- sucker rod
- rubber
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Abstract
The utility model provides a cylindrical blowout preventer for a hydraulic control sucker rod, and aims to solve the problem that an existing blowout preventer is composed of a metal framework and a rubber core formed by vulcanizing rubber and is poor in adaptability to size changes in pump rods, as a result, a large-diameter coupling easily tears off an end opening of the rubber core when passing through the existing blowout preventer, and the blowout preventer cannot meet requirements for blowout prevention. A piston is installed in an annular blind groove formed in the lower end portion of a shell body of the cylindrical blowout preventer for the hydraulic control sucker rod. A rubber core, a rubber core seat and a gland are installed above the piston in sequence, wherein the gland is fixedly connected with the upper end of the shell body, the rubber core is a conical rubber core, the lower end of the conical rubber core is provided with an annular lip, and the lip is of a circular arc shape; the upper end of the rubber core is fixedly connected with the rubber core seat in a vulcanized mode; an annular groove is formed in the middle of the outer periphery of the rubber core seat; the upper end of the rubber core is fixed to the upper end face of the annular groove of the rubber core seat and the lower end face of the rubber core seat in a vulcanized mode. The cylindrical blowout preventer for the hydraulic control sucker rod has the advantages that the structure is reasonable, and abrasion of a rubber matrix is reduced since the rubber core is not provided with an inner framework.
Description
Technical field
The utility model relates to a kind of blowout preventer for sucker rod, especially relates to a kind of liquid-controlled pumping rod tubular preventer.
Background technology
Preventer is to cut out well head for operation process such as formation testing, well workover, completions, prevents that gas blowout accident from occurring.No matter glue core in existing liquid-controlled pumping rod annular preventer is spherical or taper, by metallic framework, form together with the vulcanization of rubber, as disclosed utility model patent on June 9 " hydraulic blowout preventer of oil pumping rod " (publication number CN201723193U) in 2010, comprise base, piston is pressed on top, guiding connecting ring, spherical glue core, upper cover, securing member, upper oil hole and lower oilhole, when down-hole has pressure to need blowout prevention sealing, oilhole passes into pressure oil downwards, upper oil hole is as spill port, top presses piston to move up under pressure oil promotes, thereby push on spherical glue core, move, owing to being subject to the reaction of upper cover Internal Spherical Surface, sphere iron core in spherical glue core is oppressed elastic caoutchouc and is embraced to centre group, make elastic caoutchouc that sucker rod periphery is sealed to obvolvent completely, thereby reach blowout prevention requirement.The sphere obvolvent hermetically-sealed construction of this preventer, can seal obvolvent to different size sucker rod, solves different size sucker rod blowout-prevention problem, effectively prevents blowout.The glue core poor flexibility that this kind is comprised of metallic framework and the vulcanization of rubber, the bad adaptability to pump rod change in size, as when pump rod box cupling passes through, because box cupling diameter is greater than pump rod, is easy to glue core port to tear, and causes preventer can not meet blowout prevention requirement.
Utility model content
The glue core poor flexibility being formed by metallic framework and the vulcanization of rubber in order to overcome existing preventer, bad adaptability to pump rod change in size, when major diameter box cupling passes through, be easy to glue core port to tear, cause preventer can not reach the deficiency of blowout prevention requirement, the utility model provides a kind of liquid-controlled pumping rod tubular preventer.
The utility model solves the technical scheme that its technical problem adopts: liquid-controlled pumping rod tubular preventer comprises housing, glue core, piston, packing, gland, in the annular blind slot of housing bottom, piston is installed, piston top is provided with glue core, glue core print seat, gland successively, gland is fixedly connected with housing upper end, glue core is conical rubber core, the lower end of glue core bullet is annular lip limit, and annular lip limit external form is circular-arc; Glue core upper end is fixedly connected with the sulfuration of glue core print seat.
There is annular groove at glue core print seat excircle middle part, and the annular groove upper surface of the upper end of glue core and glue core print seat, the sulfuration of glue core print seat lower surface are fixed.
The beneficial effects of the utility model are that rational in infrastructure, glue core does not have inner frame, and front end is circular-arc annular lip limit external form, the major diameter objects such as rod collar or wiper block by time, circular-arc lip limit can partial switching, can self-resetting after major diameter object passes through, thus colloid wearing and tearing alleviated.This utility model seal and pressure bearing ability is lower compared with hydraulic blowout preventer of oil pumping rod, but can meet the seal and pressure bearing requirement of low pressure oil well.In addition, the large latus rectum design of 76mm has guaranteed that 73mm Technics of Prevention of Well Blowout bar can pass through preventer smoothly, while having guaranteed to run into well control dangerous situation, utilizes ram preventer safety, effective sealing sucker rod annular space.
Accompanying drawing explanation
Fig. 1 is the utility model liquid-controlled pumping rod annular preventer structural representation.
In figure: 14. housings, 15. pistons, 16. draining holes, 17. fuel feed holes, 18. annular lip limits, 19. glue cores, 20. glue core print seats, 21. glands.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.But those skilled in the art should know, the invention is not restricted to the listed specific embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.
The utility model liquid-controlled pumping rod tubular preventer, comprise housing 14, piston 15, glue core 19, gland 21, glue core 19 is conical rubber core, in the annular blind slot of housing 14 bottoms, piston 15 is installed, piston 15 tops are provided with glue core 19, glue core print seat 20, gland 21 successively, there is annular groove at glue core print seat 20 excircle middle parts, and the annular groove upper surface of the upper end of glue core 19 and glue core print seat 20, the 20 lower surface sulfurations of glue core print seat are fixed; Gland 21 is fixedly connected with housing 14 upper ends.
The lower end of glue core 19 bullets is annular lip limit 18, and annular lip limit 18 external forms are circular-arc; Glue core 19 upper ends are fixedly connected with 20 sulfurations of glue core print seat.Glue core 19 endoporus are straight hole, and internal diameter is slightly larger than gland 21, housing 14 diameter of bores.
When the fuel feed hole 17 by housing 14 bottoms injects band press liquid, promote piston 15 and move up, under the conical bore matching with glue core 19 cones in piston 15 upper ends pushes, glue core 19 endoporus seal sucker rod; When the fuel feed hole 17 of housing 14, close, when open in draining hole 16, piston 15 moves down, until no longer push glue core 19, makes glue core 19 recover nature.
The effect of liquid-controlled pumping rod tubular preventer is sealing sucker rod, prevents from gas, liquid, altering in oil pipe, and strikes off the greasy dirt on sucker rod.This preventer for guarantee Technics of Prevention of Well Blowout bar by and do not damage, glue core 19 upper ends are designed to tubular, bottom is cone, tubular internal diameter is slightly larger than between sucker rod, because glue core 19 does not have inner frame, and good springiness, bullet front end is circular-arc annular lip limit 18, when pump rod box cupling etc. be greater than pump rod diameter object by time, can " overturn " in annular lip limit, after pump rod box cupling passes through, annular lip limit resiles, make glue core not easy to wear, good sealing effect, meets the blowout prevention requirement of preventer.
It should be noted that above-described embodiment is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not depart from the claim scope of this patent.
Claims (2)
1. a liquid-controlled pumping rod tubular preventer, comprise housing, glue core, piston, packing, gland, in the annular blind slot of housing bottom, piston is installed, piston top is provided with glue core, glue core print seat, gland successively, gland is fixedly connected with housing upper end, glue core is conical rubber core, it is characterized in that: the lower end of described glue core (19) bullet is annular lip limit (18), and annular lip limit (18) external form is circular-arc; Glue core (19) upper end is fixedly connected with glue core print seat (20) sulfuration.
2. liquid-controlled pumping rod tubular preventer according to claim 1, it is characterized in that: there is annular groove at described glue core print seat (20) excircle middle part, the annular groove upper surface of the upper end of glue core (19) and glue core print seat (20), the sulfuration of glue core print seat (20) lower surface are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485016.7U CN203403853U (en) | 2013-08-09 | 2013-08-09 | Cylindrical blowout preventer for hydraulic control sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485016.7U CN203403853U (en) | 2013-08-09 | 2013-08-09 | Cylindrical blowout preventer for hydraulic control sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203403853U true CN203403853U (en) | 2014-01-22 |
Family
ID=49939792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320485016.7U Expired - Fee Related CN203403853U (en) | 2013-08-09 | 2013-08-09 | Cylindrical blowout preventer for hydraulic control sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203403853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021980A (en) * | 2020-02-17 | 2020-04-17 | 辽宁华实技术有限公司 | Double-section automatic blowout prevention well mouth sealer |
-
2013
- 2013-08-09 CN CN201320485016.7U patent/CN203403853U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021980A (en) * | 2020-02-17 | 2020-04-17 | 辽宁华实技术有限公司 | Double-section automatic blowout prevention well mouth sealer |
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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: 20140122 Termination date: 20200809 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |