CN201851051U - Wearing-prevention bush taking-sending tool for underwater wellhead - Google Patents
Wearing-prevention bush taking-sending tool for underwater wellhead Download PDFInfo
- Publication number
- CN201851051U CN201851051U CN2010206184294U CN201020618429U CN201851051U CN 201851051 U CN201851051 U CN 201851051U CN 2010206184294 U CN2010206184294 U CN 2010206184294U CN 201020618429 U CN201020618429 U CN 201020618429U CN 201851051 U CN201851051 U CN 201851051U
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- Prior art keywords
- wearing
- control pin
- cross
- drilled hole
- working block
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Abstract
A wearing-prevention bush taking-sending tool for an underwater wellhead comprises a short joint and a body which are connected by drill stem threads, wherein the upper end surface of the body is axially provided with at least two vertical holes which are uniformly distributed; a control pin is inserted in each vertical hole; and an eccentric head is arranged at the lower end of each control pin. The bottom end of each vertical hole is communicated with a first transverse hole which is arranged in radial direction; and a working block is plugged in each first transverse hole. An inclined surface which is high in outer side and low in inner side is arranged at the outer end of the working block; a spring is arranged at the inner end of the working block; and a holding groove is arranged at the top of the working block. The eccentric head of the control pin extends into the holding groove; and a guide pin is arranged between the working block and the wall of the first transverse hole. When the control pin in the vertical hole is rotated, the eccentric head at the lower end of the control pin rotates synchronously in the holding groove at the top of the working block, and then the working block moves radially in the first transverse hole to extend out of or retract to the first transverse hole, so that the task of taking or sending the wearing-prevention bush are conducted. The wearing-prevention bush taking-sending tool can correctly send the wearing-prevention bush in a wellhead filled with liquid fully and by the rotation by a certain angle of a drill stem, the wearing-prevention bush can be conveniently recovered. The wearing-prevention bush fetching-sending tool is simple in operation and high in reliability and saves working time.
Description
[technical field]
The utility model provides a kind of a kind of instrument of fetching and delivering wearing bush in oil well head under water.
[background technology]
The land drilling well, owing to well head, rotating disk or overhead traveling crane suspension hook are not just waiting reason, cause that drill bit and drilling rod are promoting or transferring in the process the often sealing surface of collision, friction sleeve tube head and four-way junction of casing and casing hanger, produce cut and eccentric wear, make the seal failure of hanger when serious, cause and scurry pressure between each layer sleeve pipe mutually.Therefore, casing head and four-way junction of casing all need be equipped with wearing bush and special use thereof and send into the taking-up instrument.There is similar problem in offshore drilling, also need be equipped with wearing bush, but land wearing bush is fetched and delivered the inapplicable Offshore Operation of instrument.
[summary of the invention]
The purpose of this utility model provides a kind of underwater well head and fetches and delivers instrument with wearing bush, can be lowered to and take out wearing bush easily.
The technical solution of the utility model is: a kind of underwater well head is fetched and delivered instrument with wearing bush, comprise the short circuit and the cylindrical body that connect with drill rod thread, it is characterized in that from the upper surface of body according to equally distributed at least two vertical cores axially are set downwards, be inserted with the control pin in each vertical core, the lower end of control pin is eccentric head; Below, each vertical core bottom be communicated with separately one from the body side according to first cross-drilled hole that radially is provided with to the axle center, fill in a job block in each first cross-drilled hole, there is high outside and low outside inclined-plane the job block outer end, be equipped with spring between at the bottom of the job block inner end and first cross-drilled hole, the top of job block is provided with holding tank, the eccentric head of control pin is stretched in holding tank, is equipped with guide finger between the job block and the first cross-drilled hole wall.
In the such scheme, rotate the control pin in the vertical core, the eccentric head of control pin lower end rotates in the holding tank inter-sync at job block top and job block is moved radially expose or first cross-drilled hole of withdrawing in first cross-drilled hole, and the wearing bush task is fetched and delivered in execution.
Further, join the labyrinth of job block in order to simplify the control pin, possible constructions simply hangs pin and replaces the Partial Jobs piece.According to radially equally distributed at least two second cross-drilled holes being set, to be threaded one hang pin in each second cross-drilled hole from the body side to the axle center.In the time will realizing that job block exposes the function of first cross-drilled hole, with the suspension pin that is threaded; In the time will realizing that job block is withdrawn the function of first cross-drilled hole, unload the suspension pin.
Further, in order to reduce the resistance that the instrument of fetching and delivering falls deeply in being full of the well head of liquid, according to axially being set, equally distributed flowing hole runs through about the body in the body upper surface.
Further, center, body lower surface protrudes out downwards and forms the heavily extension that hangs down, in order to hang counterweight, the stability when keeping the instrument of fetching and delivering to rotate.
The utility model can be lowered to wearing bush accurately in being full of the well head of liquid, just it can be reclaimed easily as long as drilling rod rotated to an angle.Simple to operate, the reliability height is saved the activity duration.
[description of drawings]
Fig. 1 is the utility model structural representation.
Fig. 2 is that A-A turns to sectional view among Fig. 1.
[specific embodiment]
Be described further below in conjunction with the utility model embodiment and accompanying drawing thereof.
Embodiment shown in the drawings, a kind of underwater well head is fetched and delivered instrument with wearing bush, comprises the short circuit 1 and the cylindrical body 3 that are threaded with the drilling rod (not shown), and drilling rod drives short circuit 1 and body 3 rotations.According to axially equally distributed at least two vertical cores 31 being set downwards, present embodiment is two vertical cores 31, is the central axis symmetry from the upper surface of body 3.Be inserted with control pin 2 in each vertical core 31, control pin 2 upper ends are blocked by back-up ring, prevent that control pin 2 from falling from top to bottom.The lower end of control pin 2 is eccentric 21, and eccentric 21 can have multiple structure to be indicated in prior art, and eccentric 21 of present embodiment adopts half cylinder, and a side is that plane, a side are the faces of cylinder.Below, each vertical core 31 bottoms be communicated with separately one from body 3 sides according to first cross-drilled hole 32 that radially is provided with to the axle center.Fill in a job block 5 in each first cross-drilled hole 32, there is high outside and low outside inclined-plane 52 job block 5 outer ends, job block 5 inner ends and first cross-drilled hole are equipped with spring 4 at 32 the end, the top of job block 5 is provided with holding tank 51, the off-centre of control pin 2 21 is stretched in holding tank 51, is equipped with guide finger 6 between job block 5 and first cross-drilled hole, 32 walls and is used to limit job block 5 and rotates in first cross-drilled hole.
Rotate the control pin 2 in the vertical core 31, the 21 holding tank 51 inter-syncs rotation at job block 5 tops of the off-centre of control pin 2 lower ends move radially job block 5 and expose or first cross-drilled hole 32 of withdrawing in first cross-drilled hole 32, carry out the wearing bush task of fetching and delivering.
For simplified structure, available simple suspension pin 7 is replaced the structure that part control pin 2 is joined job block 5.Present embodiment adopts two job blocks 5 and two suspension pins 7: from body 3 sides is on the face of cylinder, according to radially equally distributed at least two second cross-drilled holes 33 being set to the axle center, present embodiment hangs pin 7 to be threaded one with two second cross-drilled holes 33 in each second cross-drilled hole 33.In the time will realizing that job block exposes the function of first cross-drilled hole 32, hang pin 7 to be threaded; In the time will realizing the function of job block 5 withdrawals first cross-drilled hole, unload and hang pin 7.Hang pin 7 and be more suitable for being lowered to the wearing bush operation.
Run through body about in the of 3 in body 3 upper surfaces according to axially equally distributed flowing hole 8 being set, present embodiment is 90 degree right angles distributions with four flowing holes 8, and when in the well head that the instrument of fetching and delivering is being full of liquid during lifting, liquid can pass through from flowing hole 8.
Center, body 3 lower surface protrudes out downwards and forms one and hang down and heavily hang 9, and in order to hang the counterweight (not shown), the instrument of fetching and delivering has advantages of higher stability when rotating under drilling rod drives.
Implement to be lowered to the wearing bush operation with the utility model: rotation control pin 2, the semi-cylindrical of control pin 2 lower ends promotes job block 5 and tightens fully in the body 3, hang pin 7 second cross-drilled hole 33 of packing into, the evagination that hangs pin 7 partly is rotated in the wearing bush J type groove, drilling rod connects short circuit 1, wearing bush sent into put in place, rotating to an angle partly enters in the straight trough of wearing bush J type groove the evagination that hangs pin 7 again, can extract body 3 out.
Implement to fetch wearing bush with the utility model: rotation control pin 2, the semi-cylindrical Rotate 180 of control pin 2 lower ends °, job block 5 exposes body 3, shed suspension pin 7 from second cross-drilled hole 33, by drilling rod body 3 is put into the well head head, when wearing bush is withstood in body 3 bottoms and put in place, act on piece 5 this moment under the inclined-plane 52 and spring 4 actings in conjunction in first cross-drilled hole 32 of its outer end, just in time collude in the narrow groove in wearing bush, mention body 3 and can finish recovery.
Claims (5)
1. a underwater well head is fetched and delivered instrument with wearing bush, comprise the short circuit and the cylindrical body that connect with drill rod thread, it is characterized in that from the upper surface of body being inserted with the control pin in each vertical core according to axially equally distributed at least two vertical cores being set downwards, the lower end of control pin is eccentric head; Below, each vertical core bottom be communicated with separately one from the body side according to first cross-drilled hole that radially is provided with to the axle center, fill in a job block in each first cross-drilled hole, there is high outside and low outside inclined-plane the job block outer end, be equipped with spring between at the bottom of the job block inner end and first cross-drilled hole, the top of job block is provided with holding tank, the eccentric head of control pin is stretched in holding tank, is equipped with guide finger between the job block and the first cross-drilled hole wall.
2. underwater well head according to claim 1 is fetched and delivered instrument with wearing bush, it is characterized in that from the body side hanging pin to be threaded one according to radially to the axle center equally distributed at least two second cross-drilled holes being set in each second cross-drilled hole.
3. underwater well head according to claim 1 and 2 is fetched and delivered instrument with wearing bush, it is characterized in that the upper surface is complied with equally distributed flowing hole axially is set.
4. underwater well head according to claim 1 and 2 is fetched and delivered instrument with wearing bush, it is characterized in that center, body lower surface protrudes out vertical heavily extension of formation downwards.
5. underwater well head according to claim 3 is fetched and delivered instrument with wearing bush, it is characterized in that center, body lower surface protrudes out vertical heavily extension of formation downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206184294U CN201851051U (en) | 2010-11-22 | 2010-11-22 | Wearing-prevention bush taking-sending tool for underwater wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206184294U CN201851051U (en) | 2010-11-22 | 2010-11-22 | Wearing-prevention bush taking-sending tool for underwater wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201851051U true CN201851051U (en) | 2011-06-01 |
Family
ID=44093450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206184294U Expired - Lifetime CN201851051U (en) | 2010-11-22 | 2010-11-22 | Wearing-prevention bush taking-sending tool for underwater wellhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201851051U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018804A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | Impact-resisting well opening device facilitating pipeline taking and placing |
| CN106499356A (en) * | 2016-11-16 | 2017-03-15 | 重庆前卫科技集团有限公司 | A kind of coronal plug decentralization installation tool |
| CN116201479A (en) * | 2023-01-05 | 2023-06-02 | 中海石油(中国)有限公司海南分公司 | Method for closing and running casing |
-
2010
- 2010-11-22 CN CN2010206184294U patent/CN201851051U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018804A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | Impact-resisting well opening device facilitating pipeline taking and placing |
| CN106499356A (en) * | 2016-11-16 | 2017-03-15 | 重庆前卫科技集团有限公司 | A kind of coronal plug decentralization installation tool |
| CN106499356B (en) * | 2016-11-16 | 2019-01-01 | 重庆前卫科技集团有限公司 | A kind of coronal plug decentralization installation tool |
| CN116201479A (en) * | 2023-01-05 | 2023-06-02 | 中海石油(中国)有限公司海南分公司 | Method for closing and running casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Meizuan Energy Technology (Shanghai) Co., Ltd. Assignor: Shanghai Meizuan Equipment Chengtao Co., Ltd Contract record no.: 2011310000205 Denomination of utility model: Wearing-prevention bush taking-sending tool for underwater wellhead Granted publication date: 20110601 License type: Exclusive License Record date: 20111008 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110601 |
|
| CX01 | Expiry of patent term |