CN202152659U - Anti-theft well sealer at well opening - Google Patents
Anti-theft well sealer at well opening Download PDFInfo
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- CN202152659U CN202152659U CN2011202503878U CN201120250387U CN202152659U CN 202152659 U CN202152659 U CN 202152659U CN 2011202503878 U CN2011202503878 U CN 2011202503878U CN 201120250387 U CN201120250387 U CN 201120250387U CN 202152659 U CN202152659 U CN 202152659U
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- wall
- slips
- housing
- cone
- well
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Abstract
An anti-theft well sealer at a well opening can be applied to sealing and blocking of well openings in oil fields. A slip is embedded in a rectangular hole on the outer wall of the lower end of a shell, inclined faces are arranged at the upper end and the lower end of the inner side of the slip, an annular cylindrical upper cone body is arranged in the shell, a circular conical surface at the lower end of the upper cone body is arranged at the upper cone surface of the slip, and a circular conical surface at the upper end of a lower cone body is arranged at the lower conical surface of the slip. Right-rotating inner threads are arranged on the inner wall of the upper cone body, and left-rotating inner threads are arranged on the inner wall of the lower cone body. Right-rotating inner threads are arranged on the outer wall of the upper end of a lead screw, and left-rotating inner threads are arranged on the outer wall of the lower end of the lead screw. A ball valve seat, a steel ball and a spring are fixed at the lower end of a central hole of the lead screw. The anti-theft well sealer has the advantages that during the installation process of a casing pipe of the oil opening of an oil well, a special spraying tool can be used for performing pollution-free spraying, under-well pressure can be monitored at any time, and the anti-theft well sealer is safe and can guard against theft.
Description
Technical field
The utility model relates to oil well mouth equipment technology field, particularly a kind of antitheft blowout preventer that is used for being installed in temporarily or for a long time well head.
Background technology
In oil extraction process, need implement interim or long-term shut-in well measure to oil well according to the concrete condition of oil well.At present, use the sealing device shut-in well of simple wellhead, because it is simple in structure, theftproof performance is poor, is opened easily, has potential safety hazard.For the well that associated gas is arranged, cause poisoning easily, security incident such as on fire; For the long well that stops, be prone to be difficult to open or do not open phenomenon by the foreign matter filling, it is greatly passive to bring to organism of production; When there is certain pressure the down-hole, be prone to overflow takes place, cause environment pollution.
The utility model content
The purpose of the utility model is: a kind of well head antitheft blowout preventer is provided, is installed in well head, be used for interim or long-term shut-in well, utilize special-purpose open flow instrument can carry out pollution-free open flow; At any time monitor well internal pressure again, and have safety, theftproof performance.
The technical scheme that the utility model adopts is: well head antitheft blowout preventer; Mainly form by housing, lock tube, locking bolt, cam, support plug, upper cone, leading screw, slips, compressing tablet, shell fragment, ball valve seat, steel ball, lower cone, spring, spring base; In the upper end of circle tube form shell body sleeve A PI standard external is arranged, can be fixed on the well head sleeve pipe.It is characterized in that: on the outer wall of the lower end of housing, be evenly distributed with three slots; In slot, be embedded with a slips respectively, the slip insert of the oriented outer lug of outer wall of slips; On the wall of housing, compressing tablet is arranged, in slot, slip insert is in the outside of compressing tablet with the slips retaining for compressing tablet; Have circular depressed that shell fragment is arranged in circular depressed at the slips middle part, and shell fragment is between slips and compressing tablet; There is the inclined-plane inboard of described slips in two ends up and down; The upper cone that a circle ring column shape is arranged in housing, the lower end outer wall of upper cone has taper seat, and the taper seat of upper cone lower end is on the conical surface on the slips; The lower cone that a circle ring column shape is arranged in housing, the upper end outer wall of lower cone has taper seat, and the taper seat of lower cone upper end is on the following conical surface of slips; The dextrorotation internal thread is arranged on the upper cone inwall, on the lower cone inwall, levogyrate inner thread is arranged; In upper cone He in the lower cone, a leading screw is arranged, on the upper end outer wall of leading screw the dextrorotation internal thread is arranged, on the lower end outer wall of leading screw levogyrate inner thread is arranged; Rotating threaded shaft can make upper cone to lower slider, and simultaneously lower cone upwards slides, and promote jointly slips outwards seat be enclosed on the internal surface of sleeve pipe.Be fixed with a ball valve seat in the lower end of leading screw centre bore, steel ball and spring are arranged in ball valve seat, the spring base of an annular is arranged in the lower end of spring, be fixed on the lower end of leading screw centre bore through screw thread.
In the centre bore of the upper end of housing, be fixed with the lock tube of an annular through screw thread; The lower end internal thread of lock tube is fixed a support plug, and it is the cam of arc that an outer wall is arranged in the upper surface of support plug, and lock tube has a transverse holes, and the cannelure on lock tube transverse holes and the housing is relative; A cylinder bodily form locking bolt is arranged in the lock tube transverse holes, and the outer wall of locking bolt is with spring.
For can be under the situation that well head antitheft blowout preventer is installed the pressure in the connection well, be drilled with the single current valve opening in the upper surface of housing, be drilled with pressure transmission hole in the bottom of single current valve opening, the lower end of pressure transmission hole is in the bottom of housing sleeve A PI standard external.Be fixed with ball-and-seat in the single current valve opening, the upper end of ball-and-seat connects flexible pipe, and flexible pipe connects pressure meter.
The beneficial effect of the utility model: the utility model well head antitheft blowout preventer, be installed in the well mouth of oil well sleeve pipe, utilize special-purpose open flow instrument can carry out pollution-free open flow; At any time monitor well internal pressure again, and have safety, theftproof performance.
Description of drawings
Fig. 1 is the utility model well head antitheft blowout preventer structural profile sketch map.
Fig. 2 is the process of the unblanking sketch map of well head antitheft blowout preventer.
Fig. 3 is the blowout prevention process sketch map of well head antitheft blowout preventer.
Among the figure, 1-pressure measurement one way valve, 2-pressure meter, 3-housing, 4-lock tube, 5-locking bolt; The 6-cam, 7-support plug, 8-upper cone, 9-leading screw, 10-slips, 11-compressing tablet; The 12-shell fragment, 13-ball valve seat, 14-steel ball, 15-lower cone, 16-spring, 17-spring base; The 18-key bar, 19-key urceolus, the 20-shell fragment, the 21-slip key, 22-open flow joint, the 23-open flow is taken over a business.
The specific embodiment
Embodiment 1: with a well head antitheft blowout preventer is example, and the utility model is done further explain.
Consult Fig. 1.The utility model well head antitheft blowout preventer; Mainly form, sleeve A PI standard external is arranged in the upper end of circle tube form shell body 3 by housing 3, lock tube 4, locking bolt 5, cam 6, support plug 7, upper cone 8, leading screw 9, slips 10, compressing tablet 11, shell fragment 12, ball valve seat 13, steel ball 14, lower cone 15, spring 16, spring base 17.Be drilled with the single current valve opening in the upper surface of housing 3, be drilled with pressure transmission hole in the bottom of single current valve opening, the lower end of pressure transmission hole is in the bottom of housing 3 sleeve A PI standard external.Be fixed with ball-and-seat in the single current valve opening, the upper end of ball-and-seat connects flexible pipe, and flexible pipe connects pressure meter 2.
On the outer wall of the lower end of housing 3, be evenly distributed with three slots vertically.In slot, be embedded with the slips 10 of a cuboid respectively, the slip insert of the oriented outer lug of outer wall of slips 10.Compressing tablet 11 is arranged on the wall of housing 3, and in slot, slip insert is in the outside of compressing tablet 11 with slips 10 retainings for compressing tablet 11.Have circular depressed that shell fragment 12 is arranged in circular depressed at slips 10 middle parts, and shell fragment 12 is between slips 10 and compressing tablet 11.There is the inclined-plane inboard of described slips 10 in two ends up and down; The upper cone 8 that a circle ring column shape is arranged in housing 3, the lower end outer wall of upper cone 8 has taper seat, and the taper seat of upper cone 8 lower ends is on the conical surface on the slips 10.The lower cone 15 that a circle ring column shape is arranged in housing 3, the upper end outer wall of lower cone 15 has taper seat, and the taper seat of lower cone 15 upper ends is on the following conical surface of slips 10.On upper cone 8 inwalls, the dextrorotation internal thread is arranged, on lower cone 15 inwalls, levogyrate inner thread is arranged; In upper cone 8 He in the lower cone 15, a leading screw 9 is arranged, on the upper end outer wall of leading screw 9 the dextrorotation internal thread is arranged, on the lower end outer wall of leading screw 9 levogyrate inner thread is arranged; Rotating threaded shaft 9 can make upper cone 8 to lower slider, simultaneously lower cone 15 upwards slide, and promote jointly slips 10 outwards seat be enclosed on the internal surface of sleeve pipe.
Be fixed with a ball valve seat 13 in the lower end of leading screw 9 centre bores, steel ball 14 and spring 16 are arranged in ball valve seat 13, the spring base 17 of an annular is arranged in the lower end of spring 16, be fixed on the lower end of leading screw 9 centre bores through screw thread.
In the centre bore of the upper end of housing 3, be fixed with the lock tube 4 of an annular through screw thread; The lower end internal thread of lock tube 4 is fixed a support plug 7, the cam 6 that in the upper surface of support plug 7 outer wall to be arranged be arc, and lock tube 4 has a transverse holes, and the cannelure on lock tube 4 transverse holes and the housing 3 is relative; A cylinder bodily form locking bolt 5 is arranged in lock tube 4 transverse holes, and the outer wall of locking bolt 5 is with spring.
The installation and the use of well head antitheft blowout preventer.Consult Fig. 1.In upper cone 8 and lower cone 15 pack into housing 3 from the bottom; The internal thread of hypocentrum slowly screws in leading screw 9 on the edge; In housing 3 outer walls are reserved groove, pack into successively slips 10, shell fragment 12, it is outside and be screwed on housing 3 then press strip 11 to be pressed in shell fragment 12; Earlier ball valve seat 13 is inserted leading screws 9 inner rear threads and connect, steel ball 14, spring 16 ball valve seat 13 inside of packing into successively, again spring base 17 is screwed in ball valve seats 13 then; On locking bolt 5, insert spring housing then in the side opening of lock tube 4 inside earlier, cam 6 is put into the cannelure of lock tube 4 inside again, support plug 7 is connected with lock tube 4 spirals, the lock tube 4 after will installing at last inserts housings 3 upper end endoporus; Screw in pressure measurement one way valve 1 at housing 3 upper end screw thread places, connect pressure meter 2, can normally use.
Clockwise rotate leading screw 9 through special-purpose setting tool when transferring, drive that upper cone 8 moves down, move on the lower cone 15, it is overhanging to promote slips 10, finally is anchored to internal surface of sleeve pipe reliably and sits card; When tripping out, special-purpose setting tool rotates counterclockwise leading screw 9, drive on the upper cone 8 move, lower cone 15 moves down, meanwhile, slips 10 radius vector under the effect of shell fragment 12 and compressing tablet 11 inwardly resets, and makes slips 10 separate unfreezing with internal surface of sleeve pipe.
The blowout preventer upper design has the screw thread that is connected with the well head sleeve pipe, and is designed with slips 10, can blowout preventer be anchored to internal surface of sleeve pipe, when in well, high pressure being arranged, still can guarantee safe and reliable work; This blowout preventer theftproof is strong, is designed with special-purpose setting tool and theftproof lock, sets the back as does not have the special tool blowout preventer to be difficult for being opened; Designed special-purpose open flow instrument, an end connects exterior tubing, and the other end just can back down steel ball 14 pressure releases when screwing in the blowout preventer inner chamber, carry out pollution-free open flow; Unidirectional pressure valve 3, pressure meter 2, monitor well internal pressure at any time are equipped with in blowout preventer top; After blowout preventer takes out,, promptly reusable through easy maintaining.
Consult Fig. 2.Slips 10 accomplish sit card after, take out special-purpose setting tool, be lowered to theftproof lock mainly by locking bolt, cam form, private key mainly is made up of key shell, key bar, slip key, shell fragment; The key bar 18 that turns clockwise, when the register of slip key 21 and key barrel 19, slip key 21 ejects under the effect of shell fragment 20; Continue to clockwise rotate driving cam 6 rotations, locking bolt 5 is ejected in the locked groove to the housing 3, be rotated counterclockwise key bar 18 then; Slip key 21 is along the arc surface withdrawal of key barrel 19; Take out private key, accomplish blowout preventer and lock this moment, can not be opened when having private key.In the time of need unblanking, be lowered to private key according to the step of front, drive cam 6 half-twists counterclockwise, locking bolt 5 elastic resets in the withdrawal lock body, take out theftproof lock, accomplish blowout preventer and unblank.
Be designed with the slip key 21 that can stretch in the private key, when going to corresponding reserved location, under the effect of shell fragment 20, eject, when the rotation private key, can drive cam 6 work; In the time of need tripping out key, the rotation private key makes slip key 21 regain through arc surface; Unique being difficult to of private key mechanism design strengthened the safe antitheft property of blowout preventer by imitated.
Consult Fig. 3.The inner steel ball 14 of blowout preventer is under the effect of spring 16 and ball valve seat 13 fitted seal borehole fluids.Before tripping out blowout preventer; Elder generation's observation well internal pressure when needs carry out open flow, is connected special-purpose open flow instrument 22 1 ends with outside relief line; Open flow instrument 22 other ends screw in the blowout preventer and back down steel ball 14 until the top 23 of open flow instrument 22 ends, and opening is arranged around the top.This moment, downhole fluid passed through spring base 17, ball valve seat 13, special-purpose open flow instrument 22 openings, inwall successively, flowed into exterior tubing, realized safe open flow pressure release.
Claims (2)
1. well head antitheft blowout preventer; Mainly form by housing (3), lock tube (4), locking bolt (5), cam (6), support plug (7), upper cone (8), leading screw (9), slips (10), compressing tablet (11), shell fragment (12), ball valve seat (13), steel ball (14), lower cone (15), spring (16), spring base (17); In the upper end of circle tube form shell body (3) sleeve A PI standard external is arranged, it is characterized in that: on the lower end outer wall of housing (3), be evenly distributed with three slots; In slot, be embedded with a slips (10) respectively, the slip insert of the oriented outer lug of outer wall of slips (10); Compressing tablet (11) is arranged on the wall of housing (3), and in slot, slip insert is in the outside of compressing tablet (11) with slips (10) retaining for compressing tablet (11); Have circular depressed that shell fragment (12) is arranged in circular depressed at slips (10) middle part, and shell fragment (12) is between slips (10) and compressing tablet (11); There is the inclined-plane inboard of described slips (10) in two ends up and down; The upper cone (8) of a circle ring column shape is arranged in housing (3), and the lower end outer wall of upper cone (8) has taper seat, and the taper seat of upper cone (8) lower end is on the last conical surface of slips (10); The lower cone (15) of a circle ring column shape is arranged in housing (3), and the upper end outer wall of lower cone (15) has taper seat, and the taper seat of lower cone (15) upper end is on the following conical surface of slips (10); On upper cone (8) inwall, the dextrorotation internal thread is arranged, on lower cone (15) inwall, levogyrate inner thread is arranged; In upper cone (8) and in the lower cone (15) leading screw (9) is arranged, on the upper end outer wall of leading screw (9) the dextrorotation internal thread is arranged, on the lower end outer wall of leading screw (9) levogyrate inner thread is arranged; Lower end at leading screw (9) centre bore is fixed with a ball valve seat (13), and steel ball (14) and spring (16) are arranged in ball valve seat (13), and the spring base (17) of an annular is arranged in the lower end of spring (16), is fixed on the lower end of leading screw (9) centre bore through screw thread;
In the upper end centre bore of housing (3), be fixed with the lock tube (4) of an annular through screw thread; The lower end internal thread of lock tube (4) is fixed a support plug (7), and it is the cam of arc (6) that an outer wall is arranged in the upper surface of support plug (7), and lock tube (4) has a transverse holes, and the cannelure on lock tube (4) transverse holes and the housing (3) is relative; In lock tube (4) transverse holes cylinder bodily form locking bolt (5) is arranged, the outer wall of locking bolt (5) is with spring.
2. well head antitheft blowout preventer according to claim 1, it is characterized in that: the upper surface at housing (3) is drilled with the single current valve opening, is drilled with pressure transmission hole in the bottom of single current valve opening, and the lower end of pressure transmission hole is in the bottom of housing (3) sleeve A PI standard external; Be fixed with ball-and-seat in the single current valve opening, the upper end of ball-and-seat connects flexible pipe, and flexible pipe connects pressure meter (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202503878U CN202152659U (en) | 2011-07-15 | 2011-07-15 | Anti-theft well sealer at well opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202503878U CN202152659U (en) | 2011-07-15 | 2011-07-15 | Anti-theft well sealer at well opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202152659U true CN202152659U (en) | 2012-02-29 |
Family
ID=45693159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202503878U Expired - Lifetime CN202152659U (en) | 2011-07-15 | 2011-07-15 | Anti-theft well sealer at well opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202152659U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159220A (en) * | 2019-07-01 | 2019-08-23 | 承德市开发区富泉石油机械有限公司 | Petroleum industry wellhead equipment Quick Connect Kit |
| CN114934756A (en) * | 2022-06-28 | 2022-08-23 | 中核通辽铀业有限责任公司 | In-well plugging structure, layered liquid pumping quantity measuring device and measuring method thereof |
| CN117307079A (en) * | 2023-11-28 | 2023-12-29 | 大庆市归藏石油科技有限公司 | Antitheft blowout preventer capable of implementing monitoring and pressure relief of natural gas and pressure in well |
-
2011
- 2011-07-15 CN CN2011202503878U patent/CN202152659U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159220A (en) * | 2019-07-01 | 2019-08-23 | 承德市开发区富泉石油机械有限公司 | Petroleum industry wellhead equipment Quick Connect Kit |
| CN114934756A (en) * | 2022-06-28 | 2022-08-23 | 中核通辽铀业有限责任公司 | In-well plugging structure, layered liquid pumping quantity measuring device and measuring method thereof |
| CN114934756B (en) * | 2022-06-28 | 2024-01-05 | 中核通辽铀业有限责任公司 | Well plugging structure, layered liquid extraction amount measuring device and measuring method thereof |
| CN117307079A (en) * | 2023-11-28 | 2023-12-29 | 大庆市归藏石油科技有限公司 | Antitheft blowout preventer capable of implementing monitoring and pressure relief of natural gas and pressure in well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120229 |
|
| CX01 | Expiry of patent term |