CN201137478Y - Multipurpose hydraulic blow-out preventer for preventing pipe column falling - Google Patents
Multipurpose hydraulic blow-out preventer for preventing pipe column falling Download PDFInfo
- Publication number
- CN201137478Y CN201137478Y CNU2007200280351U CN200720028035U CN201137478Y CN 201137478 Y CN201137478 Y CN 201137478Y CN U2007200280351 U CNU2007200280351 U CN U2007200280351U CN 200720028035 U CN200720028035 U CN 200720028035U CN 201137478 Y CN201137478 Y CN 201137478Y
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- Prior art keywords
- slips
- tubing string
- well
- fall
- support body
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Abstract
The utility model discloses a multifunctional hydraulic blowout preventer for preventing a pipe string from dropping into a well, belonging to the oil industry field. The utility model can prevent the downhole pipe string from dropping in a well, in the control of well blowout, which is suitable for the control of well blowout that shear a downhole pipe string to seal the well, to avoid following salvage. The utility model comprises a shell, a hydraulic shear blowout preventer and a pushing rod, wherein the hydraulic shear blowout preventer is provided at the upper of the shell, the pushing rod is connected with the hydraulic shear blowout preventer, the lower of the shell is provided with an anti-drop operation unit connected with the pushing rod. When the hydraulic shear blowout preventer shears a pipe string, the anti-drop operation unit clamps the pipe string to prevent the pipe string from dropping into the well, and replace elevator to pick and release the downhole pipe string.
Description
Technical field
The utility model relates to the blowout control appliance of petroleum industry, particularly a kind of fall hydraulics blow out preventer of using of well of tubing string that prevent more, in control blowout process, prevent that down-hole string from falling in the well, be particularly suited for shearing the control blowout operation that down-hole string is shunt in a well, avoid follow-up salvage.
Background technology
In oil drilling, workover treatment process, the blowout phenomenon happens occasionally.Seal space in the pipe of tubing string self during blowout if desired, and and sleeve pipe between annular space, just must use the hydraulic cutter ram preventer, cut off tubing string with shear ram, and the sealing function that utilizes shear ram to have, realize shut-in well, play the effect of blind rams.Yet at present the hydraulic cutter ram preventer does not possess the function of mounting board tubing string when shearing tubing string, and the tubing string after the shearing is fallen in the well, though controlled blowout, for the production after the blowout has increased follow-up salvage.
Summary of the invention
The purpose of this utility model provides a kind of fall hydraulics blow out preventer of using of well of tubing string that prevent more, overcomes the deficiency of existing shear ram preventer, and the down-hole string of avoiding being sheared falls in the well.
Use the present technique solution can reach above-mentioned purpose: a kind ofly to prevent that tubing string the many of well that fall from comprising housing, hydraulic cutter blowout hookup and catch bar with hydraulic blow out preventer, the hydraulic cutter blowout hookup is installed in the top of housing, catch bar is connected with the hydraulic cutter blowout hookup, in lower part of frame anti-fall well operations device is housed, anti-fall well operations device also is connected with catch bar.
The utility model compared with prior art has following useful effect: when the hydraulic cutter blowout hookup is sheared tubing string, and the anti-fall well operations device chucking tubing string in the utility model.After tubing string was cut off by the hydraulic cutter blowout hookup, the slips that driven in the anti-fall well operations device by the self gravitation effect moved downward together, and moving downward of slips outer conical surface can be subjected to stopping of contacted with it slips support body internal conical surface.The barrier effect of this up big and down small taper seat makes when slips moves downward, to the motion of housing centre bore direction, and stronger utilization card tooth chucking tubing string.The displacement that slips moves downward is big more, and clamping force is just big more, thereby blocks tubing string firmly, falls in the well to prevent it.Hydraulic cutter blowout hookup in the utility model is equipped with top seal colloid and ring packing colloid.The utility model appearance and size with the full envelope preventer of of the same type, same specification, partly to seal preventer appearance and size identical, the hydraulic cutter blowout hookup can be replaced by blind rams or partly seal flashboard and become full envelope preventer and partly seal preventer and use, and anti-fall well operations device is identical with the result of use of partly sealing in the preventer at full envelope preventer.Preventing that tubing string from falling in the well, anti-fall well operations device can replace in the underground work process that elevator rises, down-hole string down.
Description of drawings
Fig. 1 is an assembling schematic diagram of the present utility model.
Fig. 2 is the structural representation of the anti-fall well operations device of the utility model.
Fig. 3 be among Fig. 2 A-A to cut-away view.
Fig. 4 be among Fig. 2 C-C to cut-away view.
The specific embodiment
Below in conjunction with embodiment the utility model is done further detailed description: referring to Fig. 1, a kind of fall hydraulics blow out preventer of using of well of tubing string that prevent more, comprise housing 11, hydraulic cutter blowout hookup 10 and catch bar 12, hydraulic cutter blowout hookup 10 is installed in the top of housing 11, and catch bar 12 is connected with hydraulic cutter blowout hookup 10.In the bottom of housing 11 anti-fall well operations device is housed, anti-fall well operations device also is connected with catch bar 12, clamping tubing string when shearing tubing string.Anti-fall well operations device comprises motion control mechanism and tubing string clamping device, and motion control mechanism is connected with catch bar 12 with the tubing string clamping device.Referring to Fig. 2 and Fig. 3, motion control mechanism comprises slips flashboard body 1, slips support body 7 and slips side patch 2, slips flashboard body 1 is connected by screw 8 with slips support body 7, and slips side patch 2 is installed in the outside of slips support body 7, is connected with slips flashboard body 1 by screw 9.Slips flashboard body 1 outside is provided with groove and cooperates with catch bar 12, and the inboard is provided with groove slips support body 7 is installed, and slips support body 7 is fixed on the body wall of slips flashboard body 1 by screw 8; The inboard of slips support body 7 is up big and down small internal conical surfaces, and taper seat is provided with axial slide rail within it.Referring to Fig. 3 and Fig. 4, the tubing string clamping device comprises slips 3, goes up hanging screw 4, spring 5 and following hanging screw 6, and last hanging screw 4 is installed in the upper end of slips flashboard body 1 inboard groove, and slips 3 is connected with slips flashboard body 1 by last hanging screw 4; The height of slips 3 is less than the height of slips support body 7, and slips 3 blocks tight more more in the process that down-hole string moves down.The body wall of slips 3 is provided with installing hole, will descend hanging screw 6 traverses fixed in installing hole, and spring 5 upper ends are fixed on the hanging screw 4, and the lower end is fixed on the following hanging screw 6.Slips 3 is semicircular body, and the interior circle of its column is provided with the card tooth and is used for the clamping down-hole string, and cylindrical is up big and down small outer conical surface, is provided with feather key and cooperates with the axial slide rail of slips support body 7 internal conical surfaces on the outer conical surface of slips 3.
Anti-fall well operations device symmetry of the present utility model is installed in the bottom of housing 11, and catch bar 12 is connected with Hydraulic Station with hydraulic line by piston.When if the use of blowout scene takes place, because the slips flashboard body 1 of anti-fall well operations device is connected with catch bar 12, when hydraulic cutter blowout hookup 10 is sheared down-hole string, at first promotion piston of the hydraulic oil in the hydraulic circuit and catch bar 12 move to housing 11 centre bores, hydraulic cutter blowout hookup 10 begins to shear tubing string, and anti-fall well operations device begins the mounting board tubing string.After tubing string was cut off, the hydraulic circuit pressurize was return to prevent upper and lower oil cylinder, made slips flashboard body 1 keep motionless.The tubing string of being cut off below hydraulic cutter blowout hookup 10 is subjected to action of gravity, drives slips 3 and moves downward together.Because the inboard up big and down small internal conical surface of slips support body 7 is to the interception of slips 3 outer conical surface, two slips 3 are descending with tubing string on one side about making, to the motion of housing 11 centre bores, mounting board is lived tubing string more tightly, prevents that more effectively tubing string from falling in the well on one side.The descending distance of slips 3 is big more, and mounting board power is just big more, thereby realizes preventing that tubing string from falling into the function in the well.The effect of spring 5 is that slips 3 descending process medi-springs 5 are stretched.When being promoted out by subsequent handling by the tubing string of mounting board, hydraulic circuit oppositely pressurizes, piston is return, slips 3 is under the resilient force of spring 5 that is stretched, its feather key is up along the axial slide rail on slips support body 7 internal conical surfaces, and to the direction motion away from housing 11 centre bores, 2 slips 3 open about making.
The function of anti-fall well operations device clamping tubing string of the present utility model can replace elevator to play, descend down-hole string in the underground work process.When hoisting tubing string, after oil pipe is raised, the hydraulic circuit pressurization, catch bar 12 utilizes the oil pipe that connects under the anti-fall well operations device mounting board to the motion of housing 11 centre bore directions.After being raised oil pipe and unloading, suspension ring hang down and connect oil pipe, and at this moment hydraulic circuit oppositely pressurizes, and catch bar 12 is return, and slips 3 is up and open under the effect of spring 5, so repeatedly.Anti-fall well operations device replaces the operation process of elevator same as described above when transferring tubing string.
Claims (7)
1, a kind of fall hydraulics blow out preventer of using of well of tubing string that prevent more, comprise housing (11), hydraulic cutter blowout hookup (10) and catch bar (12), hydraulic cutter blowout hookup (10) is installed in the top of housing (11), catch bar (12) is connected with hydraulic cutter blowout hookup (10), it is characterized in that in the bottom of housing (11) anti-fall well operations device being housed, anti-fall well operations device also is connected with catch bar (12).
2, a kind of fall hydraulics blow out preventer of using of well of tubing string that prevent according to claim 1 is characterized in that anti-fall well operations device comprises motion control mechanism and tubing string clamping device more, and motion control mechanism is connected with catch bar (12) with the tubing string clamping device.
3, a kind of fall hydraulics blow out preventer of using of well of tubing string that prevent according to claim 2 more, it is characterized in that motion control mechanism comprises slips flashboard body (1), slips support body (7) and slips side patch (2), slips flashboard body (1) is connected by screw (8) with slips support body (7), slips side patch (2) is installed in the outside of slips support body (7), is connected with slips flashboard body (1) by screw (9).
4, a kind of fall hydraulics blow out preventer of using of well of tubing string that prevent according to claim 3 more, it is characterized in that slips flashboard body (1) outside is provided with groove and cooperates with catch bar (12), the inboard is provided with groove slips support body (7) is installed, and slips support body (7) is fixed on the body wall of slips flashboard body (1) by screw (8); The inboard of slips support body (7) is up big and down small internal conical surface, and taper seat is provided with axial slide rail within it.
5, according to claim 2 or 4 described a kind of fall hydraulics blow out preventer of using of well of tubing string that prevent more, it is characterized in that the tubing string clamping device comprises slips (3), goes up hanging screw (4), spring (5) and following hanging screw (6), last hanging screw (4) is installed in the upper end of slips flashboard body (1) inboard groove, and slips (3) is connected with slips flashboard body (1) by last hanging screw (4); The height of slips (3) is less than the height of slips support body (7).
6, a kind of fall hydraulics blow out preventer of using of well of tubing string that prevent according to claim 5 more, the body wall that it is characterized in that slips (3) is provided with installing hole, to descend hanging screw (6) traverses fixed in installing hole, spring (5) upper end is fixed on the hanging screw (4), and the lower end is fixed on the following hanging screw (6).
7, a kind of fall hydraulics blow out preventer of using of well of tubing string that prevent according to claim 5 more, it is characterized in that slips (3) is a semicircular body, circle is provided with the card tooth in the column, cylindrical is up big and down small outer conical surface, is provided with feather key and cooperates with the axial slide rail of slips support body (7) internal conical surface on the outer conical surface of slips (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200280351U CN201137478Y (en) | 2007-09-13 | 2007-09-13 | Multipurpose hydraulic blow-out preventer for preventing pipe column falling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200280351U CN201137478Y (en) | 2007-09-13 | 2007-09-13 | Multipurpose hydraulic blow-out preventer for preventing pipe column falling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201137478Y true CN201137478Y (en) | 2008-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200280351U Expired - Fee Related CN201137478Y (en) | 2007-09-13 | 2007-09-13 | Multipurpose hydraulic blow-out preventer for preventing pipe column falling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201137478Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604518A (en) * | 2015-12-22 | 2016-05-25 | 付吉平 | Portable wellhead drop-prevention device and wellhead cable blowout-prevention gate integrated device |
| CN105765156A (en) * | 2013-11-18 | 2016-07-13 | 阿克解决方案公司 | Asymetrically cutting valve seats |
| CN109403906A (en) * | 2018-11-26 | 2019-03-01 | 秘天昊 | Four ram preventer of coiled tubing hangs diameter contracting autocompensation installation |
| CN109505553A (en) * | 2018-11-26 | 2019-03-22 | 秘天昊 | The application method of four ram preventer of coiled tubing suspension diameter contracting autocompensation installation |
| CN114458188A (en) * | 2022-01-14 | 2022-05-10 | 四川宝石机械钻采设备有限责任公司 | Cutting flashboard for belt press working machine |
| CN115822499A (en) * | 2022-11-08 | 2023-03-21 | 无锡中地钻探装备有限公司 | Horizontal hole fisher throwing propulsion device |
-
2007
- 2007-09-13 CN CNU2007200280351U patent/CN201137478Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105765156A (en) * | 2013-11-18 | 2016-07-13 | 阿克解决方案公司 | Asymetrically cutting valve seats |
| CN105604518A (en) * | 2015-12-22 | 2016-05-25 | 付吉平 | Portable wellhead drop-prevention device and wellhead cable blowout-prevention gate integrated device |
| CN109403906A (en) * | 2018-11-26 | 2019-03-01 | 秘天昊 | Four ram preventer of coiled tubing hangs diameter contracting autocompensation installation |
| CN109505553A (en) * | 2018-11-26 | 2019-03-22 | 秘天昊 | The application method of four ram preventer of coiled tubing suspension diameter contracting autocompensation installation |
| CN114458188A (en) * | 2022-01-14 | 2022-05-10 | 四川宝石机械钻采设备有限责任公司 | Cutting flashboard for belt press working machine |
| CN115822499A (en) * | 2022-11-08 | 2023-03-21 | 无锡中地钻探装备有限公司 | Horizontal hole fisher throwing propulsion device |
| CN115822499B (en) * | 2022-11-08 | 2024-05-31 | 无锡中地钻探装备有限公司 | Horizontal hole fisher throwing propulsion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20091013 |