CN201280899Y - Downhole pipe column length compensation apparatus - Google Patents
Downhole pipe column length compensation apparatus Download PDFInfo
- Publication number
- CN201280899Y CN201280899Y CNU200820173999XU CN200820173999U CN201280899Y CN 201280899 Y CN201280899 Y CN 201280899Y CN U200820173999X U CNU200820173999X U CN U200820173999XU CN 200820173999 U CN200820173999 U CN 200820173999U CN 201280899 Y CN201280899 Y CN 201280899Y
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- China
- Prior art keywords
- length compensation
- compensation device
- moment
- underground
- piston
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Abstract
The utility model discloses an underground pipe length compensation device in petroleum industry, which is used for underground pipes of well drilling, well workover construction and water injection and steam injection wells, and the length compensation device can guarantee the normal operation of drilling tool under the compensation device and underground tools. The underground pipe length compensation device comprises a length compensation mechanism and an outer operation cylinder; wherein, the length compensation mechanism comprises a piston and an inner operation cylinder; the lower part of the piston is connected with a torque transmission mechanism to realize the torque transmission function for the connected pipe. The length compensation device solves the problem of abnormal length change of underground pipe caused by pressure, temperature and operations, and the torque transmission problem, and realizes the automatic length compensation and torque transmission for underground pipes; thereby, the construction efficiency is improved, and the clamp sealing effect is guaranteed.
Description
Technical field
The utility model belongs to the auxiliary equipment of oil exploitation, and particularly the down-hole string length compensation device is used in the down-hole string of drilling well, well workover construction and water filling, notes vapour well, guarantees that the drilling tool of below in this compensation arrangement and downhole tool use normal.
Background technology
In brill, mill, the cover operation of oil drilling, well workover are constructed, owing to sending, latter period of oilfield development casing corrosion, distortion and operating personnel bore reasons such as inhomogeneous, bit bouncing, bouncing of drilling tool phenomenon take place often, reduce the efficiency of construction of cover, mill, brill.Even cause the construction drilling tool to damage or the counter-rotating of top drilling tool, and influence normal construction or cause down-hole accident complicated.
In oil-field flooding, notes vapour were produced, elastic elongation took place in water filling, steam injection string under the influence of injection pressure and implantation temperature.On the one hand, the card envelope instrument that the tubing string elastic elongation promotes packing oil jacket annular space is subjected to displacement in sleeve pipe, and predetermined card envelope position is changed, and influences normal water filling, annotates vapour work; On the other hand,,, lose packing effect, cause operation again the oil jacket annular space because the tubing string elastic reset moves tool up and deblocking the card envelope of packing oil jacket annular space in water filling, when the work of notes vapour temporarily stops.
On-the-spot for addressing the above problem, made relevant length compensation device, make the variation of down-hole string adaptation self length.But the length compensation device of using does not possess the moment of torsion propagation function at present, can not satisfy the needs that moment of torsion transmits.When meeting down-hole accident,, will cause down-hole accident complicated as bit freezing.
Summary of the invention
The purpose of this utility model is to make a kind of dependable performance, down-hole string length compensation device safe in utilization.On the one hand, in order to subdue in brill, mill, the cover operation construction, owing to operating personnel send the inhomogeneous problems such as bit bouncing, bouncing of drilling tool, drilling tool damage that cause of boring.On the other hand, solve oil-field flooding, annotate during vapour produces because the tubing string elastic deformation, cause the card envelope instrument of oil jacket annular space to be subjected to displacement and on transfer from one place to another under escort the problem of envelope.Be that the tubing string that is connected is realized the moment of torsion propagation function simultaneously.
Use the present technique solution can reach above-mentioned purpose: the down-hole string length compensation device comprises length compensation mechanism and outer working tube, length compensation mechanism comprises piston and interior seating nipple, below piston, connect torque-transmitting mechanisms, the moment of torsion propagation function of tubing string that realization connects.
The length compensation apparatus that the utility model provides has following useful effect: simple in structure, easy to use, safe and reliable, do not influence original tubing string normal running and original function.The unusual change in length that solved that down-hole string is stressed, temperature and operation etc. causes and the moment of torsion problem of transmission of tubing string.Tubing string length compensation and moment of torsion transmission have automatically been realized.Can subdue the problem of boring the irregular bit bouncing that causes, bouncing of drilling tool, drilling tool damage of sending effectively.Solve water filling, annotated the problem that vapour well down-hole string elastic deformation causes displacement of card envelope instrument and automatic deblocking, improved efficiency of construction, guaranteed card envelope effect.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Among the figure: bottom joint 1, compensation short circuit 2, lower seal joint 3, sealing sealing adjustable ring 4, spacer ring 5, joint ring 6, moment of torsion mandrel 7, outer working tube 8, piston 9, interior seating nipple 10, upward seal nipple 11, top connection 12.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description: referring to accompanying drawing, the down-hole string length compensation device, comprise length compensation mechanism and outer working tube 8, length compensation mechanism comprises piston 9 and interior seating nipple 10, connects torque-transmitting mechanisms below piston 9.Torque-transmitting mechanisms comprises lower seal joint 3 and moment of torsion mandrel 7, and the top inner chamber of lower seal joint 3 is that polygon cooperates with the profile of moment of torsion mandrel 7, can satisfy the needs that moment of torsion transmits.Spacer ring 5 and joint ring 6 also are housed in the lower lumen of lower seal joint 3, and with 4 sealings of sealing adjustable ring, the inner-cavity structure of its spacer ring 5 and sealing adjustable ring 4 all matches with the contour structures of moment of torsion mandrel 7.Outer working tube 8 equates with the outer sectional area of interior seating nipple 10 with the annular space area that interior seating nipple 10 forms; Outer working tube 8 equates with the outer sectional area of moment of torsion mandrel 7 with the annular space area that moment of torsion mandrel 7 forms; Reduce this compensation arrangement with this and be subjected to the interior influence that changes of pressing.
In the utility model, bottom joint 1 links together with lower seal joint 3 through compensation short circuit 2, is used to connect the bottom tubing string, when down-hole string extends, moment of torsion mandrel 7 is entered in the compensation short circuit 2 simultaneously, guarantees that below drilling tool and downhole tool normally use.Spacer ring 5, joint ring 6 usefulness sealing sealing adjustable ring 4 are fixed in the lower seal joint 3.Lower seal joint 3 is connected with last seal nipple 11 through outer working tube 8.Moment of torsion mandrel 7, interior seating nipple 10 also can be installed in moment of torsion mandrel 7, interior seating nipple 10 and piston 9 whole manufacturings in the outer working tube 8 through piston 9 screwed connections together.The top of seating nipple 10 was used to connect the top tubing string in top connection 12 was connected.
During concrete the use, the utility model is connected the middle part of down-hole string, is positioned at the top of drilling tool or downhole tool.In use, by length compensation mechanism moving up and down in outer working tube 8 in the utility model, realization is to the length compensation of drilling well, well workover tubing string and water filling, steam injection string, and the polygon that passes through between lower seal joint 3 and the moment of torsion mandrel 7 cooperates the moment of torsion transmission that realizes the connection tubing string.
Claims (4)
1, down-hole string length compensation device comprises length compensation mechanism and outer working tube (8), and length compensation mechanism comprises piston (9) and interior seating nipple (10), it is characterized in that connecting torque-transmitting mechanisms in the below of piston (9).
2, down-hole string length compensation device according to claim 1 is characterized in that torque-transmitting mechanisms comprises lower seal joint (3) and moment of torsion mandrel (7), and the top inner chamber of lower seal joint (3) is that polygon cooperates with the profile of moment of torsion mandrel (7).
3, down-hole string length compensation device according to claim 2, it is characterized in that in the lower lumen of lower seal joint (3) spacer ring (5) and joint ring (6) being housed also, with sealing adjustable ring (4) sealing, the inner-cavity structure of its spacer ring (5) and sealing adjustable ring (4) all matches with the contour structures of moment of torsion mandrel (7).
4, down-hole string length compensation device according to claim 1 and 2 is characterized in that outer working tube (8) equates with the outer sectional area of interior seating nipple (10) with the annular space area that interior seating nipple (10) forms; Outer working tube (8) equates with the outer sectional area of moment of torsion mandrel (7) with the annular space area that moment of torsion mandrel (7) forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820173999XU CN201280899Y (en) | 2008-10-28 | 2008-10-28 | Downhole pipe column length compensation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820173999XU CN201280899Y (en) | 2008-10-28 | 2008-10-28 | Downhole pipe column length compensation apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201280899Y true CN201280899Y (en) | 2009-07-29 |
Family
ID=40927775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820173999XU Expired - Fee Related CN201280899Y (en) | 2008-10-28 | 2008-10-28 | Downhole pipe column length compensation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201280899Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852501A (en) * | 2011-07-28 | 2013-01-02 | 南通天华和睿科技创业有限公司 | Heat compensator for oil field well |
| CN107165575A (en) * | 2017-07-17 | 2017-09-15 | 河北中荣石油机械有限责任公司 | A kind of ultra-short radius well deflecting drilling tool |
| CN109723389A (en) * | 2017-10-30 | 2019-05-07 | 中国石油化工股份有限公司 | A kind of length compensation device |
| CN115163646A (en) * | 2022-07-12 | 2022-10-11 | 西南石油大学 | Stepless telescopic sealing shaft capable of simultaneously transmitting torque and bit pressure |
-
2008
- 2008-10-28 CN CNU200820173999XU patent/CN201280899Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852501A (en) * | 2011-07-28 | 2013-01-02 | 南通天华和睿科技创业有限公司 | Heat compensator for oil field well |
| CN107165575A (en) * | 2017-07-17 | 2017-09-15 | 河北中荣石油机械有限责任公司 | A kind of ultra-short radius well deflecting drilling tool |
| CN107165575B (en) * | 2017-07-17 | 2023-06-16 | 河北中荣石油机械有限责任公司 | Ultrashort radius well deflecting drilling tool |
| CN109723389A (en) * | 2017-10-30 | 2019-05-07 | 中国石油化工股份有限公司 | A kind of length compensation device |
| CN115163646A (en) * | 2022-07-12 | 2022-10-11 | 西南石油大学 | Stepless telescopic sealing shaft capable of simultaneously transmitting torque and bit pressure |
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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: 20090729 Termination date: 20111028 |