CN107842335A - A kind of oil well blowout-prevention structure - Google Patents
A kind of oil well blowout-prevention structure Download PDFInfo
- Publication number
- CN107842335A CN107842335A CN201710983384.7A CN201710983384A CN107842335A CN 107842335 A CN107842335 A CN 107842335A CN 201710983384 A CN201710983384 A CN 201710983384A CN 107842335 A CN107842335 A CN 107842335A
- Authority
- CN
- China
- Prior art keywords
- glue core
- valve base
- oil
- plane
- hole
- 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.)
- Withdrawn
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 14
- 239000003292 glue Substances 0.000 claims description 57
- 239000003921 oil Substances 0.000 description 36
- 239000010779 crude oil Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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)
- Pipe Accessories (AREA)
Abstract
The invention discloses a kind of oil well blowout-prevention structure, including bracket and cover plate, blind hole is provided with the side of bracket, an inclined-plane A is provided with the middle part of adjusting rod, cover plate both ends are fixed with the extension parallel with bracket side, and the middle part of extension is the Flexible Connector of arc, and the groove connected with blind hole is provided with the side wall of bracket, the movable end of jacking bar is provided with the inclined-plane B being engaged with inclined-plane A, and the movable end of jacking bar is placed in blind hole through groove.Inclined-plane A is engaged with inclined-plane B; jacking bar is displaced outwardly; jacking bar drives two connecting rods to continue to move along; and the other end of the two connecting rods and Flexible Connector of arc is be hinged that a tension force is imposed to it simultaneously; so that the Flexible Connector of arc produces deformation, i.e., linear is changed into by arc so that cable has enough receiving spaces; while ensure that multiple cables are laid simultaneously, ensure defencive function of the cable bridge to cable.
Description
Technical field
The present invention relates to a kind of preventer, in particular to a kind of oil well blowout-prevention structure.
Background technology
During oil mining, sleeve pipe is to ensure the necessary condition that Oil/gas Well normally produces, and oil well is made because of a variety of causes
Packaged tube damage often occurs, therefore it is the key component in workover process to repair oil well casing, and sleeve pipe damage mainly has following
Several situations：First, the casing inner diameter of sleeve shrinking diameter, i.e. oil well diminishes, the instrument of going into the well is caused to can't pass, oil well can not be just
Often production；Second, the casing collapse of casing collapse, i.e. oil well causes formation sand to pour in well, makes oil gas into seam or hole
Well stops production；Third, sleeve pipe dislocation, disconnection, some casings can fracture, and fracture staggers up and down.Oil field is in actual well workover at present
Cheng Zhong, sleeve pipe is repaired, need first to take out oil pipe, but during lower elevator lifting oil pipe, easily to tubing head four-way
Ring gasket groove is produced and collided with, and damages ring gasket groove, simultaneously because the residual pressure of underground, occurs natural gas or original often
Oil leakage, or even there is well kick, blowout phenomenon.Serious safety hazards are brought to well workover production, are oil well repairing operations
During insoluble problem all the time.Therefore, design one kind can either security protection ring gasket groove, and can enough controls automatically
Well kick, the device of blowout phenomenon occur suddenly for system, while can be cost-effective, are production and are solved using unit common need
Problem.
The content of the invention
It is an object of the invention to provide a kind of oil well blowout-prevention structure, reaches control and well kick, the purpose of blowout occur suddenly.
The purpose of the present invention is achieved through the following technical solutions：
A kind of oil well blowout-prevention structure, include the upper valve base and lower valve base of mutual clamping, through hole be provided with the middle part of upper valve base,
The lower through-hole coaxial with upper through hole is provided with lower valve base, the upper through hole, lower through-hole and oil pipe gap coordinate, in the upper valve
The tubular rubber core of both ends protrusion and medial recess is hingedly connected with the inwall of seat, the minimum diameter of the glue core is less than the oil
The external diameter of pipe, multiple hemispheric grooves are arranged at intervals with the inwall of the glue core.During well workover, it is necessary to first by oil
Pipe is lifted by crane, but easily the ring gasket groove generation to tubing head four-way is collided with, and damages ring gasket groove, simultaneously because underground
Residual pressure, crude oil leakage occurs often, or even well kick, blowout phenomenon occur；The present invention adds on the workover rig at well head
Upper valve base and lower valve base equipped with mutual clamping, and the glue core being hinged on upper valve base inwall is brought into close contact with oil pipe, realization pair
The separation that well head is located up and down, when blowout or well kick occur suddenly, the liquid or gas pressure of underground act through lower lead to
Hole is applied to the bottom of glue core, and glue core is the tubular structure that both ends protrude medial recess, and glue core bottom can be to after being under pressure
Drawn close on the inwall of lower valve base, that is, glue core bottom interior wall occur and locally depart from oil pipe, while the top of glue core occurs one
Setting becomes, i.e., the epimere of glue core locally contacts to make up the contact loss of glue core lower end and oil pipe with oil pipe, in the inwall of glue core
On multiple hemispheric grooves for opening up be brought into close contact using air pressure adsorption principle with oil-pipe external wall, be always ensured that in the middle part of glue core
Contact with oil pipe, crude oil when well kick or blowout is avoided to leak.
Further, in addition to ball, the ball are fixed on the recess of the glue outer core, and and lower valve base
Inwall connection.Glue core is contacted by ball with lower valve base inwall so that glue core bottom crude oil in by sleeve pipe is impacted
And when deforming upon, accelerate glue core top using the deformation of ball itself certain deformation occur that glue core lower end is made up with this
Contact loss, prevent in the middle part of glue core occurring crack between oil pipe and causing crude oil leakage.
Further, the longitudinal section of the ball is circular or oval.As having preferably, the section of ball is set
It is set to circular or ellipse so that while compressive deformation occurs for one end of ball, its other end then occurs to expand deformation,
And then the epimere of glue core is timely responded to, quickly contacted with oil pipe, reduce the possibility of crude oil leakage.
The present invention compared with prior art, has the following advantages and advantages：
1st, for the present invention when blowout or well kick occur suddenly, the liquid or gas pressure of underground act through lower through-hole
The bottom of glue core is applied to, and glue core is the tubular structure that both ends protrude medial recess, glue core bottom can be downward after being under pressure
Drawn close on the inwall of valve seat, that is, glue core bottom interior wall occur and locally depart from oil pipe, while the top of glue core occurs necessarily
The epimere of deformation, i.e. glue core locally contacts to make up the contact loss of glue core lower end and oil pipe with oil pipe, on the inwall of glue core
The multiple hemispheric grooves opened up are brought into close contact using air pressure adsorption principle with oil-pipe external wall, be always ensured that in the middle part of glue core with
The contact of oil pipe, crude oil when well kick or blowout is avoided to leak；
2nd, glue core of the invention is contacted by ball with lower valve base inwall so that glue core bottom crude oil in by sleeve pipe
Impact and when deforming upon, accelerate glue core top using the deformation of ball itself certain deformation occur that glue is made up with this
The contact loss of core lower end, prevent occurring crack between oil pipe in the middle part of glue core and cause crude oil leakage；
3rd, the section of ball of the invention is provided in round or ellipse so that compressed shape occurs for one end of ball
While change, its other end then occurs to expand deformation, and then timely responds to the epimere of glue core, is quickly contacted with oil pipe, reduces
The possibility of crude oil leakage.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Mark and corresponding parts title in accompanying drawing：
1- balls, 2- upper valve bases, 3- glue core, 4- oil pipes, the upper through holes of 5-, 6- grooves, 7- lower valve bases, 8- lower through-holes.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in figure 1, the present embodiment includes the upper valve base 2 and lower valve base 6 of mutual clamping, it is provided with the middle part of upper valve base 2
Through hole 5, is provided with the lower through-hole 8 coaxial with upper through hole 5 on lower valve base 6, and the upper through hole 5, lower through-hole 8 and the gap of oil pipe 4 are matched somebody with somebody
Close, the tubular rubber core 3 of both ends protrusion and medial recess is hingedly connected with the inwall of the upper valve base 2, the glue core 3 is most
Small internal diameter is less than the external diameter of the oil pipe 4, and multiple hemispheric grooves 6 are arranged at intervals with the inwall of the glue core 3.Repairing
, it is necessary to first lift by crane oil pipe 4 during well, but easily the ring gasket groove generation to 4 four-ways of oil pipe is collided with, damage sealing
Steel ring slot, simultaneously because the residual pressure of underground, occurs crude oil leakage often, or even there is well kick, blowout phenomenon；The present invention exists
The upper valve base 2 and lower valve base 6 of mutual clamping, and the glue being hinged on the inwall of upper valve base 2 are added on workover rig at well head
Core 3 is brought into close contact with oil pipe 4, realizes the separation located up and down to well head, when blowout or well kick occur suddenly, the liquid of underground
Or gas pressure acts through the bottom that lower through-hole 8 is applied to glue core 3, and glue core 3 is the tubular that both ends protrude medial recess
Structure, the bottom of glue core 3 the bottom interior wall part of glue core 3 and oil pipe can occur after being under pressure to drawing close on the inwall of lower valve base 6
4 depart from, while certain deformation occurs for the top of glue core 3, i.e. the epimere of glue core 3 locally contacts to make up glue core 3 with oil pipe 4
Lower end and the contact loss of oil pipe 4, the multiple hemispheric grooves 6 opened up on the inwall of glue core 3 are former using atmospheric pressure absorption
Reason is brought into close contact with the outer wall of oil pipe 4, is always ensured that the middle part contact with oil pipe 4 of glue core 3, avoids crude oil when well kick or blowout from sending out
Raw leakage.
Also include ball 1, the ball 1 is fixed on the recess of the outer wall of glue core 3, and with lower valve base 6
Wall connects.Glue core 3 is contacted by ball 1 with the inwall of lower valve base 6 so that the bottom of glue core 3 crude oil in by sleeve pipe is impacted
And when deforming upon, accelerate glue core 3 top using the deformation of ball 1 itself certain deformation occur that glue core 3 is made up with this
The contact loss of lower end, prevent occurring crack between the middle part of glue core 3 and oil pipe 4 and cause crude oil leakage.
As having preferably, the section of ball 1 is provided in round or ellipse so that presses one end of ball 1
While contracting deformation, its other end then occurs to expand deformation, and then timely responds to the epimere of glue core 3, is quickly connect with oil pipe 4
Touch, reduce the possibility of crude oil leakage.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (2)
1. a kind of oil well blowout-prevention structure, including the upper valve base (2) of mutual clamping and lower valve base (7), are provided with the middle part of upper valve base (2)
Upper through hole (5), the lower through-hole (8) coaxial with upper through hole (5), the upper through hole (5), lower through-hole (8) are provided with lower valve base (7)
Coordinate with oil pipe (4) gap, it is characterised in that：Both ends protrusion and middle part are hingedly connected with the inwall of the upper valve base (2)
The tubular rubber core (3) of depression, the minimum diameter of the glue core (3) is less than the external diameter of the oil pipe (4), in the glue core (3)
Multiple hemispheric grooves (6) are arranged at intervals with inwall.
A kind of 2. oil well blowout-prevention structure according to claim 1, it is characterised in that：Also include ball (1), the rubber
Ball (1) is fixed on the recess of glue core (3) outer wall, and is connected with the inwall of lower valve base (7)；The ball (1) is indulged
Section is circular or ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710983384.7A CN107842335A (en) | 2017-10-20 | 2017-10-20 | A kind of oil well blowout-prevention structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710983384.7A CN107842335A (en) | 2017-10-20 | 2017-10-20 | A kind of oil well blowout-prevention structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107842335A true CN107842335A (en) | 2018-03-27 |
Family
ID=61662425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710983384.7A Withdrawn CN107842335A (en) | 2017-10-20 | 2017-10-20 | A kind of oil well blowout-prevention structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107842335A (en) |
-
2017
- 2017-10-20 CN CN201710983384.7A patent/CN107842335A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180327 |