CN104790897A - Well repair blowout preventer - Google Patents
Well repair blowout preventer Download PDFInfo
- Publication number
- CN104790897A CN104790897A CN201510109589.3A CN201510109589A CN104790897A CN 104790897 A CN104790897 A CN 104790897A CN 201510109589 A CN201510109589 A CN 201510109589A CN 104790897 A CN104790897 A CN 104790897A
- Authority
- CN
- China
- Prior art keywords
- glue core
- valve base
- hole
- well
- blowout preventer
- 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.)
- Pending
Links
- 239000003292 glue Substances 0.000 claims description 57
- 239000003921 oil Substances 0.000 description 35
- 239000010779 crude oil Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 6
- 239000003129 oil well Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention discloses a well repair blowout preventer. The well repair blowout preventer comprises a bracket and a cover plate. Blind holes are formed in the sides of the bracket, the middle of an adjusting rod is provided with a slope A, extension parts parallel to the sides of the bracket are fixed to the two ends of the cover plate, the middle portions of the extension parts are provided with arc-shaped elastic connecting pieces, grooves communicated with the blind holes are formed in the side walls of the bracket, the movable ends of ejector rods are provided with slopes B matched with the slope A, and the movable ends of the ejector rods penetrate through the grooves to be arranged in the blind holes. The slope A and the slopes B are in contact fit, the ejector rods move outwards, the ejector rods drive two connecting rods to move forwards continuously, the other ends of the two connecting rods are hinged to the arc-shaped elastic connecting pieces to simultaneously apply tension to the arc-shaped elastic connecting pieces, the arc-shaped elastic connecting pieces are deformed, arcs are converted into straight lines, enough containing space is provided for cables, the multiple cables are placed simultaneously, and the protection function of a cable bridge for the cables is guaranteed.
Description
Technical field
The present invention relates to a kind of preventer, specifically refer to well-repairing blowout preventer.
Background technology
In oil mining process, sleeve pipe is the necessary condition ensureing that Oil/gas Well is normally produced, and oil well causes casing failure often to occur because of a variety of causes, therefore reparation oil well casing is the key component in workover process, casing failure mainly contains following several situation: one is sleeve shrinking diameter, namely the casing inner diameter of oil well has diminished, and cause lower well tool can't pass, oil well cannot normally be produced; Two is casing collapses, and namely the casing collapse of oil well becomes seam or hole, causes formation sand to pour in well, Oil/gas Well is stopped production; Three is sleeve pipe dislocation, disconnection, and some casings can fracture, and fracture staggers up and down.Current oil field is in actual well workover process, to repair sleeve pipe, need first oil pipe to be taken out, but during lower elevator lifting oil pipe, easily the ring gasket groove of tubing head four-way is produced and collide with, damage ring gasket groove, simultaneously due to the residual pressure of down-hole, often there is natural gas or crude oil leakage, even occur well kick, blowout phenomenon.Producing to well workover and bring serious safety hazards, is insoluble problem all the time in oil well repairing operation process.Therefore, designing one can either security protection ring gasket groove, automatically can control again the device that well kick, blowout phenomenon occur suddenly, simultaneously can be cost-saving, is to produce and the problem of applying unit common need solution.
Summary of the invention
The object of the present invention is to provide well-repairing blowout preventer, arrive the object controlling well kick, blowout occur suddenly.
Object of the present invention is achieved through the following technical solutions:
Well-repairing blowout preventer, comprise upper valve base and the lower valve base of mutual clamping, through hole on having in the middle part of upper valve base, lower valve base is provided with the lower through-hole coaxial with upper through hole, described upper through hole, lower through-hole and oil pipe matched in clearance, the inwall of described upper valve base is hingedly connected with two ends give prominence to and the tubular rubber core of medial recess, the minimum diameter of described glue core is less than the external diameter of described oil pipe, and the inwall of described glue core is arranged at intervals with multiple hemispheric groove.In well workover process, need first oil pipe to be lifted by crane, but easily the ring gasket groove generation of tubing head four-way is collided with, damage ring gasket groove, simultaneously due to the residual pressure of down-hole, often crude oil leakage occurs, even occur well kick, blowout phenomenon, the present invention adds upper valve base and the lower valve base of mutual clamping on the workover rig at well head place, and the glue core be hinged on upper valve base inwall and oil pipe fit tightly, realize the separation that well head is located up and down, when unexpected generation blowout or well kick, liquid or the gas pressure effect of down-hole are applied to the bottom of glue core by lower through-hole, and glue core is the tubular structure that medial recess is given prominence at two ends, can draw close on the inwall of lower valve base after being under pressure bottom glue core, namely occur that glue core bottom interior wall local departs from oil pipe, there is certain deformation in the top of glue core simultaneously, namely the epimere local of glue core contacts with oil pipe the contact loss making up glue core lower end and oil pipe, multiple hemispheric grooves that the inwall of glue core is offered utilize atmospheric pressure absorption principle and oil-pipe external wall to fit tightly, all the time the contact with oil pipe in the middle part of glue core is ensured, when avoiding well kick or blowout, crude oil leaks.
Further, also comprise bouncing ball, described bouncing ball is fixed on the recess of described glue outer core, and is connected with the inwall of lower valve base.Glue core is by bouncing ball and lower valve base contact internal walls, when making in the impact being subject to crude oil in sleeve pipe, deformation to occur bottom glue core, utilize the deformation of bouncing ball self to accelerate glue core top and certain deformation occurs with this to make up the contact loss of glue core lower end, prevent in the middle part of glue core and occur crack between oil pipe and cause crude oil leakage.
Further, the longitudinal section of described bouncing ball is circular or oval.As having preferably, the cross section of bouncing ball is set to circle or ellipse, while making one end of bouncing ball that compressive deformation occur, its other end then occurs to expand deformation, and then the epimere of glue core is responded in time, contact with oil pipe fast, reduce the possibility that crude oil is revealed.
The present invention compared with prior art, has following advantage and beneficial effect:
1, the present invention is when unexpected generation blowout or well kick, liquid or the gas pressure effect of down-hole are applied to the bottom of glue core by lower through-hole, and glue core is the tubular structure that medial recess is given prominence at two ends, can draw close on the inwall of lower valve base after being under pressure bottom glue core, namely occur that glue core bottom interior wall local departs from oil pipe, there is certain deformation in the top of glue core simultaneously, namely the epimere local of glue core contacts with oil pipe the contact loss making up glue core lower end and oil pipe, multiple hemispheric grooves that the inwall of glue core is offered utilize atmospheric pressure absorption principle and oil-pipe external wall to fit tightly, all the time the contact with oil pipe in the middle part of glue core is ensured, when avoiding well kick or blowout, crude oil leaks,
2, glue core of the present invention is by bouncing ball and lower valve base contact internal walls, when making in the impact being subject to crude oil in sleeve pipe, deformation to occur bottom glue core, utilize the deformation of bouncing ball self to accelerate glue core top and certain deformation occurs with this to make up the contact loss of glue core lower end, prevent in the middle part of glue core and occur crack between oil pipe and cause crude oil leakage;
3, the cross section of bouncing ball of the present invention is set to circle or ellipse, while making one end of bouncing ball that compressive deformation occur, its other end then occurs to expand deformation, and then the epimere of glue core is responded in time, contact with oil pipe fast, reduce the possibility that crude oil is revealed.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms a application's part, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is structural representation of the present invention;
Mark and corresponding component title in accompanying drawing:
1-bouncing ball, 2-upper valve base, 3-glue core, 4-oil pipe, the upper through hole of 5-, 6-groove, 7-lower valve base, 8-lower through-hole.
Detailed description of the invention
Clearly understand for making the object, technical solutions and advantages of the present invention, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment 1
As shown in Figure 1, the present embodiment comprises upper valve base 2 and the lower valve base 6 of mutual clamping, through hole 5 is had in the middle part of upper valve base 2, lower valve base 6 is provided with the lower through-hole 8 coaxial with upper through hole 5, described upper through hole 5, lower through-hole 8 and oil pipe 4 matched in clearance, the inwall of described upper valve base 2 is hingedly connected with two ends give prominence to and the tubular rubber core 3 of medial recess, the minimum diameter of described glue core 3 is less than the external diameter of described oil pipe 4, and the inwall of described glue core 3 is arranged at intervals with multiple hemispheric groove 6.In well workover process, need first oil pipe 4 to be lifted by crane, but easily the ring gasket groove generation of oil pipe 4 four-ways is collided with, damage ring gasket groove, simultaneously due to the residual pressure of down-hole, often crude oil leakage occurs, even occur well kick, blowout phenomenon, the present invention adds upper valve base 2 and the lower valve base 6 of mutual clamping on the workover rig at well head place, and the glue core 3 be hinged on upper valve base 2 inwall fits tightly with oil pipe 4, realize the separation that well head is located up and down, when unexpected generation blowout or well kick, liquid or the gas pressure effect of down-hole are applied to the bottom of glue core 3 by lower through-hole 8, and glue core 3 is for giving prominence to the tubular structure of medial recess in two ends, can draw close on the inwall of lower valve base 6 after being under pressure bottom glue core 3, namely occur that glue core 3 bottom interior wall local departs from oil pipe 4, there is certain deformation in the top of glue core 3 simultaneously, namely the epimere local of glue core 3 contacts with oil pipe 4 contact loss making up glue core 3 lower end and oil pipe 4, the multiple hemispheric groove 6 that the inwall of glue core 3 is offered utilizes atmospheric pressure absorption principle and oil pipe 4 outer wall to fit tightly, all the time the contact with oil pipe 4 in the middle part of glue core 3 is ensured, when avoiding well kick or blowout, crude oil leaks.
Also comprise bouncing ball 1, described bouncing ball 1 is fixed on the recess of described glue core 3 outer wall, and is connected with the inwall of lower valve base 6.Glue core 3 is by bouncing ball 1 and lower valve base 6 contact internal walls, when making in the impact being subject to crude oil in sleeve pipe, deformation to occur bottom glue core 3, utilize the deformation of bouncing ball 1 self to accelerate glue core 3 top and certain deformation occurs with this to make up the contact loss of glue core 3 lower end, prevent in the middle part of glue core 3 and occur crack between oil pipe 4 and cause crude oil leakage.
As having preferably, the cross section of bouncing ball 1 is set to circle or ellipse, while making one end of bouncing ball 1 that compressive deformation occur, its other end then occurs to expand deformation, and then the epimere of glue core 3 is responded in time, contact with oil pipe 4 fast, reduce the possibility that crude oil is revealed.
Above-described detailed description of the invention; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. well-repairing blowout preventer, comprise the upper valve base (2) of mutual clamping and lower valve base (7), upper through hole (5) is had at upper valve base (2) middle part, lower valve base (7) is provided with the lower through-hole (8) coaxial with upper through hole (5), described upper through hole (5), lower through-hole (8) and oil pipe (4) matched in clearance, it is characterized in that: on the inwall of described upper valve base (2), be hingedly connected with two ends give prominence to and the tubular rubber core of medial recess (3), the minimum diameter of described glue core (3) is less than the external diameter of described oil pipe (4), the inwall of described glue core (3) is arranged at intervals with multiple hemispheric groove (6).
2. well-repairing blowout preventer according to claim 1, is characterized in that: also comprise bouncing ball (1), and described bouncing ball (1) is fixed on the recess of described glue core (3) outer wall, and is connected with the inwall of lower valve base (7).
3. well-repairing blowout preventer according to claim 1 and 2, is characterized in that: the longitudinal section of described bouncing ball (1) is for circular or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510109589.3A CN104790897A (en) | 2015-03-13 | 2015-03-13 | Well repair blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510109589.3A CN104790897A (en) | 2015-03-13 | 2015-03-13 | Well repair blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104790897A true CN104790897A (en) | 2015-07-22 |
Family
ID=53556033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510109589.3A Pending CN104790897A (en) | 2015-03-13 | 2015-03-13 | Well repair blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104790897A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4270775A (en) * | 1977-09-21 | 1981-06-02 | A/S Akers Mek. Versted | Device for sealing the place of penetration of a pipeline in the wall of a submerged structure |
| US4964439A (en) * | 1989-04-18 | 1990-10-23 | Vanderlans Gerald J | Pipe plug with circumferential suction cups |
| CN2639516Y (en) * | 2003-06-10 | 2004-09-08 | 辽河石油勘探局兴隆台工程技术处 | Small-diameter pipe self-seal sealer for well repairing with pressure |
| CN202937219U (en) * | 2012-09-22 | 2013-05-15 | 盐城金龙达机械制造有限公司 | Lip type conical surface self-seal blowout-preventive well repair device |
| CN204060600U (en) * | 2014-07-23 | 2014-12-31 | 盘锦广拓石油技术有限公司 | Self-styled wellhead assembly |
| CN204627505U (en) * | 2015-03-13 | 2015-09-09 | 成都大漠石油机械有限公司 | A kind of blowout prevention well repairing device |
-
2015
- 2015-03-13 CN CN201510109589.3A patent/CN104790897A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4270775A (en) * | 1977-09-21 | 1981-06-02 | A/S Akers Mek. Versted | Device for sealing the place of penetration of a pipeline in the wall of a submerged structure |
| US4964439A (en) * | 1989-04-18 | 1990-10-23 | Vanderlans Gerald J | Pipe plug with circumferential suction cups |
| CN2639516Y (en) * | 2003-06-10 | 2004-09-08 | 辽河石油勘探局兴隆台工程技术处 | Small-diameter pipe self-seal sealer for well repairing with pressure |
| CN202937219U (en) * | 2012-09-22 | 2013-05-15 | 盐城金龙达机械制造有限公司 | Lip type conical surface self-seal blowout-preventive well repair device |
| CN204060600U (en) * | 2014-07-23 | 2014-12-31 | 盘锦广拓石油技术有限公司 | Self-styled wellhead assembly |
| CN204627505U (en) * | 2015-03-13 | 2015-09-09 | 成都大漠石油机械有限公司 | A kind of blowout prevention well repairing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150722 |
|
| RJ01 | Rejection of invention patent application after publication |