CN202673212U - Integral hanger for hydraulic cylinder piston - Google Patents
Integral hanger for hydraulic cylinder piston Download PDFInfo
- Publication number
- CN202673212U CN202673212U CN 201220268170 CN201220268170U CN202673212U CN 202673212 U CN202673212 U CN 202673212U CN 201220268170 CN201220268170 CN 201220268170 CN 201220268170 U CN201220268170 U CN 201220268170U CN 202673212 U CN202673212 U CN 202673212U
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- Prior art keywords
- cylinder piston
- hanger
- central tube
- liquid cylinder
- piston
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Abstract
The utility model discloses an integral hanger for a hydraulic cylinder piston, and relates to the technical field of cementing tools for hanging and cementing tail tubes during petroleum and natural gas drilling. The integral hanger comprises a slip and a central tube. The hydraulic cylinder piston is sleeved on the outside of the central tube, and is integrally of a single-layer structure. Compared with a hanger in a design mode that a cylinder liner is separated from a piston in the prior art, the integral hanger has the advantages that the wall thickness can be increased, and the internal pressure strength and the collapse resistance can be improved under the condition that quality steel parts are adopted.
Description
Technical field
The utility model relates to for the cementing tool technical field in the tail tube hanging well cementation of oil and gas well drilling.
Background technology
Along with domestic many oilfield exploitations enter the later stage, exploration and development is carried out the work to the Oil Reservoir Types such as deep layer, specific position stratum, old liberated area Tapping Residual Oil, thin oil reservoir, low pressure and low permeability oil reservoir and position, development difficulty is increasing, needs the new drilling technology of development.Therefore, the special pit shafts such as the slim-hole of development in recent years, window sidetracking well, deep-well, ultradeep well, horizontal well and high angle hole are more and more, this just need to adopt rational well shaft fixing technology and corresponding instrument to cement the well and completion practice after this class pit shaft is drilled to, the liner completion that this class well adopts is more and more, require the continuous progress of the solid technology of tail pipe, seriation and the quality of drilling liner cementing kit improve constantly.
Drilling liner cementing not only can be saved a large amount of sleeve pipes, cement and operating expenses, alleviates the rig load, reduces operation pressure; but also be conducive to protect oil-gas Layer; solve deep-well, the Holes of Complicated Wells insurmountable technical problem of conventional method, therefore, drilling liner cementing is widely adopted day by day.But drilling liner cementing and conventional cementing relatively exist annular clearance little, and cement sheath is thin, and tail pipe easily pastes the borehole wall, form drilling fluid " dead band " and are difficult to replace, and the landwaste deposition is stifled suppressing easily, the outer low technical barrier such as return of pipe Nei Liusai, pipe.
Present hanger mainly is the mode that adopts fluid cylinder, piston to separate, be CN2688871 such as publication number, the Chinese patent literature that open day is on March 30th, 2005 discloses slotting formula fluid pressure tailpiece hanger a kind of time, comprises running tool assembly, hanger body assembly, special accessories assembly three parts; The running tool assembly is by top connection, upper slip copper sheathing, lower slider copper sheathing, end ring and back-off system and central tube installation composition; The hanger body assembly is comprised of tie-back sleeve, left-hand thread joint, seat suspension system, hydraulic packing system, sealing self-locking system, the running tool assembly stretches in the hanger body assembly cavity, the special accessories assembly is connected to the compound adhesive obturating plug by some casing threads and hangs the short circuit lower end, wherein, the central tube device is comprised of central tube and central tube piston, the hydraulic packing system is comprised of fluid cylinder inner sleeve, piston, fluid cylinder overcoat, and fluid cylinder inner sleeve, piston, fluid cylinder overcoat be successively socket from inside to outside.After adopting said structure, can be implemented in when keeping traditional handicraft, also can provide back insert, movable return insert, bruising simultaneously seat hang three kinds of construction technologies, and, can make in the annular space cement paste distribution more even.
Although this mode is placed in piston in the fluid cylinder, the hanger gap of same intensity is less, can only reduce wall thickness in limited design space, reduces the intensity of hanger, therefore is unfavorable for improving the bulk strength of hanger.
The utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of for the integrated hanger of liquid cylinder piston in the tail tube hanging well cementation of oil and gas well drilling, the utility model can improve wall thickness with respect to the design that cylinder sleeve, piston in the prior art separate, in the situation that adopts the high-quality steel part, the utility model can improve anti-interior pressure, collapse resistance.
The utility model is by adopting following technical proposals to realize:
The integrated hanger of a kind of liquid cylinder piston comprises slips and central tube, it is characterized in that: be arranged with liquid cylinder piston outside central tube, described liquid cylinder piston is arranged to one deck structure of integral type.
Between described liquid cylinder piston and central tube, be provided with at least two sealing rings.
Be provided with shear pin at described liquid cylinder piston and central tube.
Be provided with garter spring at described slips.
Compared with prior art, the beneficial effect that reaches of the utility model is as follows:
1, in the utility model, but in the annular space design size, adopt the mode of fluid cylinder, piston being arranged to one deck structure of integral type, the design that relative cylinder sleeve, piston separate can improve wall thickness, in the situation that adopts the high-quality steel part, hanger can improve anti-interior pressure, collapse resistance.
2, in the utility model, between liquid cylinder piston and central tube, be provided with sealing ring, can further improve sealing effectiveness.
Description of drawings
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments, wherein:
Fig. 1 is structural representation of the present utility model
Mark among the figure:
Slips 1, garter spring 2, central tube 3, sealing ring 1, sealing ring 25, liquid cylinder piston 6, shear pin 7.
The specific embodiment
Fig. 1 is this utility model part of the integrated hanger of liquid cylinder piston, and it is by slips 1, garter spring 2, central tube 3, sealing ring 4, sealing ring 5, liquid cylinder piston 6, shear pin 7.
When construction, throwing builds the pressure ball to the position of little ball seat, suppress hydraulic pressure and cut off shear pin, pushing piston makes slips up along tapered sleeve, realization is with the purpose of tail tube hanging on the sleeve pipe of upper strata, and then the bottom shear pin is cut off in supercharging, suppress little ball seat, transferring drill string makes the lifting drilling rod not be subjected to drawing or pressing of tie-back sleeve, then be rotated in the forward the lifting drilling rod is separated with tie-back sleeve, Rubber-Plastic Composite Type Seal ring in the process of rotation in the seal can guarantee the sealing between packing element central tube and the Inserting Tube, then replaces the drilling rod plug to the position of sleeve pipe plug, realizes compound seal and self-locking, then the shear pin between sleeve pipe plug and the shear sleeve is cut off in pressurization, then replace whole plug to the impacting seat position, the lock tooth in self-locking tooth and the impacting seat is compound, thereby realizes compound seal and self-locking, on carry drill string, make implanting device propose pit shaft, during tieback, the tieback intubate is inserted realization tieback sealing in the tie-back sleeve.
Effect of the present utility model is: owing to adopted the liquid cylinder piston integrated design, therefore in identical design space, in the situation of equal material, the annular clearance of hanger and outer layer sleeve is larger, mud is not easy blocked portion in the hanger position, more is conducive to circulation, the replacement of cement paste; In same design space, adopt the liquid cylinder piston integrated design can reserve larger space, thereby increase the wall thickness of fluid cylinder and central tube, improve anti-interior the pressure and collapse resistance of hanger.
Claims (4)
1. the integrated hanger of a liquid cylinder piston (6) comprises slips (1) and central tube (3), it is characterized in that: be arranged with liquid cylinder piston (6) outside central tube (3), described liquid cylinder piston (6) is arranged to one deck structure of integral type.
2. the integrated hanger of liquid cylinder piston according to claim 1 (6) is characterized in that: be provided with two sealing rings between described liquid cylinder piston (6) and central tube (3) at least.
3. the integrated hanger of liquid cylinder piston according to claim 1 and 2 (6) is characterized in that: be provided with shear pin (7) at described liquid cylinder piston (6) and central tube (3).
4. the integrated hanger of liquid cylinder piston according to claim 1 and 2 (6) is characterized in that: be provided with garter spring (2) at described slips (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268170 CN202673212U (en) | 2012-06-08 | 2012-06-08 | Integral hanger for hydraulic cylinder piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268170 CN202673212U (en) | 2012-06-08 | 2012-06-08 | Integral hanger for hydraulic cylinder piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673212U true CN202673212U (en) | 2013-01-16 |
Family
ID=47494123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220268170 Expired - Lifetime CN202673212U (en) | 2012-06-08 | 2012-06-08 | Integral hanger for hydraulic cylinder piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111133169A (en) * | 2017-09-26 | 2020-05-08 | 通用电气(Ge)贝克休斯有限责任公司 | Internal and external downhole architecture with downlink activation |
-
2012
- 2012-06-08 CN CN 201220268170 patent/CN202673212U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111133169A (en) * | 2017-09-26 | 2020-05-08 | 通用电气(Ge)贝克休斯有限责任公司 | Internal and external downhole architecture with downlink activation |
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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: 20130116 |
|
| CX01 | Expiry of patent term |