CN2937462Y - Blow-out preventer of cable cutting hand flashboard for well repair - Google Patents
Blow-out preventer of cable cutting hand flashboard for well repair Download PDFInfo
- Publication number
- CN2937462Y CN2937462Y CN 200620123505 CN200620123505U CN2937462Y CN 2937462 Y CN2937462 Y CN 2937462Y CN 200620123505 CN200620123505 CN 200620123505 CN 200620123505 U CN200620123505 U CN 200620123505U CN 2937462 Y CN2937462 Y CN 2937462Y
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- Prior art keywords
- flashboard
- cutter hub
- chamber
- cable
- well
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 claims description 22
- 238000010008 shearing Methods 0.000 claims description 18
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Earth Drilling (AREA)
Abstract
A special well workover blowout preventer for wellhead close comprises a housing, a lower flashboard chamber and an upper flashboard chamber, the lower flashboard chamber and the upper flashboard chamber respectively having left and right screws and flashboard shafts, characterized in that the lower flashboard chamber also consists of left and right clamping flashboard bodies, which are able to clamp cables or well logging wire ropes; the upper flashboard chamber also consists of a cutting flashboard, which includes an upper flashboard body, a lower flashboard body, a top sealer, side sealers, a cutter body sealer, a cutter body and cutter body fastening bolts, wherein the cutter body fastening bolts fix the cutter body respectively to the upper flashboard body and the lower flashboard body; front end of the cutter body has a blade. Adopting manual operation for wellhead close, the utility model has simple structure, low operation cost and easy on-site mounting and using. The cables or the well logging wire ropes may be cut off and the wellhead may be closed for prevention of well blowout accidents. Before the cables or the well logging wire ropes are cut off, the downhole tools and equipment may be suspended at the wellhead for facilitating fishing work later.
Description
Technical field
The utility model relates to the well control device that the well workover of a kind of oil field is used, particularly a kind of well workover ram preventer.When promptly adopting cable or well logging wire rope to carry out workover treatment, the special-purpose well workover preventer of sealing well head.
Background technology
Cable or well logging wire rope are widely used in down-hole well logging, formation testing, perforation, well workover, salvaging, the sampling of general oil gas water well, and in the underground work such as the various downhole tools of handling, instrument.At present, adopt in the operation process of cable or well logging wire rope, the well head of most of oil-water well does not have pressure.In operation process, the phenomenon of pressure or well kick appears suddenly in well head once in a while, and the method for pre-well blowout preventing commonly used is: adopt manual ram preventer sealing well head.General manual ram preventer as notification number is: the disclosed preventer of 2247231 patent is: comprise the housing that has vertical through hole, the driving mechanism that is installed in the left and right glue core flashboard in the housing inner chamber and drives the synchronous backward horizontal slip in housing of left and right sides glue core flashboard.Because the finer wire parcel that existing cable or well logging wire rope outermost layer are twined by spiral, when using common manual ram preventer sealing well head, high-pressure well liquid is easy to from the gap ejection between the middle finer wire of two flashboard bodies, cause sealing the well head failure, may cause gas blowout accident when serious.
Summary of the invention
The purpose of this utility model provides a kind of well workover and shears manual ram preventer with cable, uses in well workover or formation testing operation process, can not only seal the purpose that well head reaches pre-well blowout preventing; Can cut off simultaneously cable or well logging wire rope; And quilt can be suspended on well head with downhole tool and instrument after being cut off cable or well logging wire rope.
The technical solution adopted in the utility model is: well workover is sheared manual ram preventer with cable, partly form by housing, left and right sides leading screw, flashboard axis, chucking flashboard body, shear ram etc., lower flashboard chamber and upper flashboard chamber are arranged on the housing, left and right sides leading screw and flashboard axis are equipped with in lower flashboard chamber and outside, upper flashboard chamber, and the flashboard axis end is connected with the flashboard body.Two chucking flashboard bodies about being equipped with in the lower flashboard chamber.When the leading screw of the left and right sides in rotation lower flashboard chamber, leading screw promotes flashboard axis, drives chucking flashboard body and moves to the well head center respectively along housing flashboard chamber, can tighten cable or well logging wire rope.Upper flashboard is equipped with shear ram in the chamber.Shear ram is made up of brake application plate body, lower flashboard body, top sealing, side seal, cutter hub sealing, shearing cutter hub and cutter hub fastening bolt.When the leading screw of the left and right sides in rotation lower flashboard chamber, leading screw promotes flashboard axis, drives shear ram and moves to the well head center respectively along housing flashboard chamber, can cut off cable or well logging wire rope, and totally-enclosed well head.Brake application plate body and lower flashboard body are split type with the shearing cutter hub, promptly will shear cutter hub respectively with the cutter hub fastening bolt and be fixed on brake application plate body and the lower flashboard body, are convenient to change.The front end of shearing cutter hub has blade.
The preceding terminal knife edge of described shearing cutter hub adopts 150 ° of V-arrangement blades, and blade is sharp, is convenient to shear cable and steel wire, and the blade two ends also have negative rake, and blade can successfully be closed up, and avoid the cut wound seal.
After two shearing cutter hubs are closed up, shear between the cutter hubs for two and can seal, shearing at two has the cutter hub sealing between the cutter hub.
Two chucking flashboard bodies do not have seal about described lower flashboard chamber, do not seal, and two chucking flashboard body front ends are planes, and crisscross groove is arranged on the preceding transverse plane, are easy to tighten cable or well logging wire rope.
Adopt cable or well logging wire rope to carry out in the operation process such as well workover or formation testing the utility model being installed on the well head.When well kick or blowout occurring, close the lower flashboard chamber earlier, cable or well logging wire rope are tightened, and with on the downhole tool of cable or well logging wire rope lower end and the chucking flashboard that instrument is suspended on preventer; Close the upper flashboard chamber then, cut off cable or well logging wire rope, realize the sealing well head simultaneously.
The beneficial effects of the utility model: the utility model adopts manual operation to close well head, does not need to be equipped with hydraulic control panel and power source, and is simple in structure, reduces operating cost, is convenient to on-the-spot the installation and use.Cut off cable or the wire rope and seal well head of logging well, prevent the generation of gas blowout accident.Before shearing cable or well logging wire rope, downhole tool and instrument can be suspended on well head, be convenient to follow-up fishing.Said structure design of the present utility model has bigger improvement, meets the needs of the pre-well blowout preventing of oilfield downhole operation fully, and the needs that particularly adopt cable or well logging wire rope to carry out underground work have produced practical function.It is a new and innovative, progressive, practical new design.
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
Description of drawings
To be the utility model well workover shear the structural profile schematic diagram of manual ram preventer, front view with cable to Fig. 1.It is the structural representation of embodiment 1.
Fig. 2 is that the utility model well workover is sheared manual ram preventer structural profile schematic diagram, vertical view with cable.
Among the figure, 1. leading screw, 2. flashboard axis, 3. top sealing, 4. housing, 5. brake application plate body, 6. cutter hub sealing, 7. cable or wire rope, 8. lower flashboard body, 9. chucking flashboard body, 10. downhole tool and instrument, 11. shear cutter hubs, 12. side seals, 13. cutter hub fastening bolts.
The specific embodiment
Embodiment: consult accompanying drawing 1.A well workover is sheared manual ram preventer with cable, and identical with existing manual ram preventer is that housing (4), lower flashboard chamber and upper flashboard chamber are formed, and lower flashboard chamber and upper flashboard chamber have left and right sides leading screw (1) and flashboard axis (2) respectively.Two chucking flashboard bodies (9) about also be equipped with in the lower flashboard chamber.
Two chucking flashboard bodies (9) front end is the plane about the lower flashboard chamber, and it is 1.5 millimeters groove that the degree of depth of intersecting is arranged on the preceding transverse plane in length and breadth.In order that after two chucking flashboard bodies (9) close up, can tighten cable or well logging wire rope (7), make cable or well logging wire rope (7) and the downhole instrument (10) that hangs can not fall into the down-hole.
There are left and right sides leading screw (1) and flashboard axis (2) in the upper flashboard chamber, and shear ram also is housed.Shear ram is made up of brake application plate body (5), lower flashboard body (8), top sealing (3), side seal (12), cutter hub sealing (6), shearing cutter hub (11) and cutter hub fastening bolt (13).Consult accompanying drawing 2.Brake application plate body (5) and lower flashboard body (8) are split type with shearing cutter hub (11).The cutter hub fastening bolt (13) of employing M10 will be sheared cutter hub (11) respectively and be fixed on brake application plate body (5) and the lower flashboard body (8).80 millimeters of the length of shearing cutter hub (11), 30 millimeters of width, 20 millimeters of thickness.The front end of shearing cutter hub (11) has blade.The preceding terminal knife edge of shearing cutter hub (11) adopts 150 ° of V-arrangement blades, and there is negative rake at the blade two ends.(anterior angle is meant the angle of cutter rake face and cutter basal plane; The rake face of cutter on the cutter basal plane time anterior angle for negative, the rake face of cutter under the cutter basal plane time anterior angle for just; Negative rake can make blade successfully close up, and avoids the cut wound seal).Shear employing top and bottom applying cutter hub sealing (6) between the cutter hub (11) at two.
Use, operating process that the narration well workover is sheared manual ram preventer with cable help to understand the utility model.When adopting the operation process of cable or well logging wire rope, well workover is sheared manual ram preventer with cable be installed in well head.The phenomenon of pressure or well kick appears suddenly in well head, needs the prevention gas blowout accident to take place.
At first, the artificial rotation left and right sides, lower flashboard chamber leading screw (1), the flashboard axis (2) that promotion cooperates with leading screw (1), driving chucking flashboard body (9) moves to the well head center respectively along housing (4) flashboard chamber, two chucking flashboard bodies (9) front end chucking cable or well logging wire rope (7) are suspended on well head with downhole tool and instrument (10) about the lower flashboard chamber.
Then, the artificial rotation left and right sides, upper flashboard chamber leading screw (1), brake application plate body (5) and the lower flashboard body (8) of shearing cutter hub (11), top sealing (3) and side seal (12) is equipped with in drive, move to the well head center respectively along housing (5) flashboard chamber, shear the V-arrangement blade of cutter hub (11) cable or well logging wire rope (7) are cut off; Continue the rotation left and right sides, upper flashboard chamber leading screw (1), close brake application plate body (5) and lower flashboard body (8), the last knife face of lower flashboard body (8) and the knife face of the brake application plate body (5) that cutter hub sealing (6) is housed are fitted.Top sealing (3) on brake application plate body (5) and the lower flashboard body (8) and side seal (1 2) are fitted with housing (4) top sealing surface or side, realize the blowout prevention sealing.
In addition, well workover is sheared manual ram preventer with cable can also be used as common blind rams preventer use, and brake application plate body (5) and lower flashboard body (8) can exchange with the common flashboard and the blind rams of same model ram preventer.
Claims (5)
1, a kind of well workover is sheared manual ram preventer with cable, by housing (4), left and right sides leading screw (1), flashboard axis (2), chucking flashboard body (9), shear ram is formed, it is characterized in that: lower flashboard chamber and upper flashboard chamber are arranged on the housing (4), left and right sides leading screw (1) and flashboard axis (2) are equipped with in lower flashboard chamber and outside, upper flashboard chamber, flashboard axis (2) end is connected with the flashboard body, two chucking flashboard bodies (9) about dress in the lower flashboard chamber, dress shear ram in the upper flashboard chamber, shear ram is by brake application plate body (5), lower flashboard body (8), top sealing (3), side seal (12), cutter hub sealing (6), shearing cutter hub (11) and fastening bolt (13) forms, brake application plate body (5) and lower flashboard body (8) are split type with shearing cutter hub (11), promptly use fastening bolt (13) will shear cutter hub (11) respectively and be fixed on brake application plate body (5) and the lower flashboard body (8), the front end of shearing cutter hub (11) has blade.
2, well workover according to claim 1 is sheared manual ram preventer with cable, it is characterized in that: the preceding terminal knife edge of described shearing cutter hub (11) adopts 150 ° of V-arrangement blades, and there is negative rake at the blade two ends, and blade can successfully be closed up, and avoid the cut wound seal.
3, well workover according to claim 1 is sheared manual ram preventer with cable, it is characterized in that: shearing at two has cutter hub sealing (6) between the cutter hub (11).
4, well workover according to claim 3 is sheared manual ram preventer with cable, it is characterized in that: the described cutter hub (11) of cutting off locates to adopt top and bottom applying cutter hub sealing (6).
5, shear manual ram preventer according to claim 1 or 2 or 3 or 4 described well workovers with cable, it is characterized in that: two chucking flashboard bodies (9) front end is the plane about described lower flashboard chamber, and crisscross groove is arranged on the preceding transverse plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123505 CN2937462Y (en) | 2006-08-03 | 2006-08-03 | Blow-out preventer of cable cutting hand flashboard for well repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123505 CN2937462Y (en) | 2006-08-03 | 2006-08-03 | Blow-out preventer of cable cutting hand flashboard for well repair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2937462Y true CN2937462Y (en) | 2007-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620123505 Expired - Lifetime CN2937462Y (en) | 2006-08-03 | 2006-08-03 | Blow-out preventer of cable cutting hand flashboard for well repair |
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| Country | Link |
|---|---|
| CN (1) | CN2937462Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383759A (en) * | 2010-09-05 | 2012-03-21 | 杨桂青 | Multifunctional blowout preventer specially used for steam-driven well |
| CN105186356A (en) * | 2015-10-21 | 2015-12-23 | 杨忠桃 | Cable fixing device for petroleum wellhead fishing operation |
| CN105507842A (en) * | 2015-11-26 | 2016-04-20 | 中国石油集团长城钻探工程有限公司 | Wellhead device based on radial horizontal rotary drilling |
| CN105822250A (en) * | 2015-01-08 | 2016-08-03 | 中国石油天然气股份有限公司 | shear ram blowout preventer |
| CN106639957A (en) * | 2016-12-02 | 2017-05-10 | 中国石油天然气股份有限公司 | Double-acting swabbing blowout preventer |
| CN108868684A (en) * | 2018-06-21 | 2018-11-23 | 江苏中船海洋设备有限公司 | The anticorrosive wear-resisting general preventer of high pressure |
| CN112963114A (en) * | 2021-02-22 | 2021-06-15 | 中国石油天然气股份有限公司 | Rodless oil production wellhead cable sealing structure and method |
-
2006
- 2006-08-03 CN CN 200620123505 patent/CN2937462Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383759A (en) * | 2010-09-05 | 2012-03-21 | 杨桂青 | Multifunctional blowout preventer specially used for steam-driven well |
| CN102383759B (en) * | 2010-09-05 | 2014-11-05 | 江苏贵鑫石油装备有限公司 | Multifunctional blowout preventer specially used for steam-driven well |
| CN105822250A (en) * | 2015-01-08 | 2016-08-03 | 中国石油天然气股份有限公司 | shear ram blowout preventer |
| CN105186356A (en) * | 2015-10-21 | 2015-12-23 | 杨忠桃 | Cable fixing device for petroleum wellhead fishing operation |
| CN105186356B (en) * | 2015-10-21 | 2018-08-14 | 合肥智慧龙图腾知识产权股份有限公司 | A kind of cable fixture for oil well head fishing |
| CN105507842A (en) * | 2015-11-26 | 2016-04-20 | 中国石油集团长城钻探工程有限公司 | Wellhead device based on radial horizontal rotary drilling |
| CN106639957A (en) * | 2016-12-02 | 2017-05-10 | 中国石油天然气股份有限公司 | Double-acting swabbing blowout preventer |
| CN108868684A (en) * | 2018-06-21 | 2018-11-23 | 江苏中船海洋设备有限公司 | The anticorrosive wear-resisting general preventer of high pressure |
| CN108868684B (en) * | 2018-06-21 | 2020-10-27 | 江苏中船海洋设备有限公司 | High-pressure corrosion-resistant wear-resistant universal blowout preventer |
| CN112963114A (en) * | 2021-02-22 | 2021-06-15 | 中国石油天然气股份有限公司 | Rodless oil production wellhead cable sealing structure and method |
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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: 20070822 |
|
| EXPY | Termination of patent right or utility model |