CN202157781U - Rotator for well cementation of the top of sieve tube of oil and gas horizontal well - Google Patents
Rotator for well cementation of the top of sieve tube of oil and gas horizontal well Download PDFInfo
- Publication number
- CN202157781U CN202157781U CN2011202151099U CN201120215109U CN202157781U CN 202157781 U CN202157781 U CN 202157781U CN 2011202151099 U CN2011202151099 U CN 2011202151099U CN 201120215109 U CN201120215109 U CN 201120215109U CN 202157781 U CN202157781 U CN 202157781U
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- CN
- China
- Prior art keywords
- box cupling
- rotation box
- ring
- circulator
- screen casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a rotator for well cementation of the top of a sieve tube of an oil and gas horizontal well, which is composed of an upper connector (1), an upper locking nail (2), a large O-type sealing ring (3), a rotating coupling (4), an outer blocking ring (5), a polytef sealing ring (6), an inner blocking ring (7), a small O-type sealing ring (8), a lower locking nail (9), an adjusting ring (10) and a lower connector (11). The inside of the rotating coupling (4) is in the plug-in type petals-shaped structure, and the upper portion of the rotating coupling (4) is in threaded connection with the upper connector (1). A petals-shaped structure at the front end of the lower connector (11) can be arranged in the petals-shaped structure of the rotating coupling (4), and the adjusting ring (10) is in threaded connection with the lower portion of the rotating coupling (4). The tool is simple in structure, can achieve rotation of a whole tubular column by inserting transmission torque in the tool, and can also achieve the function of lower portion non-rotating and upper portion rotating under the condition that the inside of the tool is disjointed.
Description
Technical field
The utility model relates to a kind of downhole tool that is used for the well cementing operation of petroleum and natural gas well completion, and instrument is used in particularly a kind of horizontal well screen casing crest water flooding mud well cementation.
Background technology
In the horizontal well completion operation, screen casing crest water flooding mud well-completing process is because technology is simple, easy to operate; Be widely used in recent years in each elephant,, especially improved the gas well cementing quality in order to improve cementing quality; Prevent that annular space is oily, air water is scurried, propose to adopt the rotation cementing technology, the rotation cementing technology is approved in the effect aspect the raising cementing quality widely; This technology is in the cementing operation process; Drive the completion tubular column rotation through rotating disk, improve the displacement efficiency of cement paste, improve cementing quality.But because conventional screen casing crest water flooding mud well-completing process requirement before well cementation, needs the packer distending between screen casing and the top well cementation section; To prevent that water mud from sinking, and stops up screen casing, therefore; In the process of rotation completion tubular column, because external packer of pipe sets, lower screen can't be rotated; And top well cementation section tubing string can't rotate separately, the rotation well cementing operation can't be carried out, thereby designed the well cementation that can be used for screen casing crest water flooding mud well-completing process and used circulator.
The utility model content
In order to solve the problem of above-mentioned existence; The utility model provides a kind of horizontal well screen casing crest water flooding mud well cementation to use circulator, is applied in the screen casing crest water flooding mud well-completing process, when guaranteeing to rotate completion tubular column; It is motionless that the lower screen tubing string keeps, and the rotation of top well cementation section tubing string.
The utility model adopts following technical proposals: circulator is used in a kind of horizontal well screen casing crest water flooding mud well cementation; Form by top connection 1, last pinning 2, big O RunddichtringO 3, rotation box cupling 4, outer baffle ring 5, teflin ring 6, inner baffle ring 7, little O RunddichtringO 8, following pinning 9, adjustable ring 10, lower contact 11; Said rotation box cupling 4 inside are the plug-in type valvular structure, and said rotation box cupling 4 tops are threaded with top connection 1; Said lower contact 11 front end valvular structures can place in rotation box cupling 4 valvular structures, and adjustable ring 10 is connected with rotation box cupling 4 lower thread.
Said lower contact 11 front end valvular structures are beloid.Said rotation box cupling 4 upper internal threaded are threaded with top connection 1.Said rotation box cupling 4 lower internal thread are threaded with adjustable ring 10.Said top connection 1 is installed pinning 2 with said rotation box cupling 4 threaded connection places, and said adjustable ring 10 is installed pinning 9 down with said rotation box cupling 4 threaded connection places.The sealing system that said outer baffle ring 5, teflin ring 6, inner baffle ring 7, little O RunddichtringO 8 are formed between said rotation box cuplings 4 and the lower contact 11; Big O RunddichtringO 3 sealings are installed between said top connection 1 front end position and the rotation box cupling 4.Said outer baffle ring 5 is a steel loop with inner baffle ring 7.Said top connection 1 external surface is step-like.
The advantage of the utility model is: the utility model tool construction is simple, can insert transfer torque through tool interior, realizes the rotation of whole tubing string, again can be under the situation that tool interior is thrown off, and the function of top rotation is not transferred in the realization bottom.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 rotates the inner valvular structure sectional drawing of box cupling
Fig. 3 lower contact front end valvular structure sectional drawing
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further: the utility model mainly is made up of top connection 1, last pinning 2, big O RunddichtringO 3, rotation box cupling 4, outer baffle ring 5, teflin ring 6, inner baffle ring 7, little O RunddichtringO 8, following pinning 9, adjustable ring 10, lower contact 11; Said rotation box cupling 4 inside are the plug-in type valvular structure, and said rotation box cupling 4 tops are threaded with top connection 1; Said lower contact 11 front end valvular structures can place in rotation box cupling 4 valvular structures, and adjustable ring 10 is connected with rotation box cupling 4 lower thread.
Said lower contact 11 front end valvular structures are beloid.Said rotation box cupling 4 upper internal threaded are threaded with top connection 1.Said rotation box cupling 4 lower internal thread are threaded with adjustable ring 10.Said top connection 1 is installed pinning 2 with said rotation box cupling 4 threaded connection places, and said adjustable ring 10 is installed pinning 9 down with said rotation box cupling 4 threaded connection places.The sealing system that said outer baffle ring 5, teflin ring 6, inner baffle ring 7, little O RunddichtringO 8 are formed between said rotation box cuplings 4 and the lower contact 11; Big O RunddichtringO 3 sealings are installed between top connection 1 front end position and the rotation box cupling 4.Said outer baffle ring 5 is a steel loop with inner baffle ring 7.Said top connection 1 external surface is step-like.
For the reliability that guarantees to seal, in rotation box cupling 4 bottoms two groups of black boies to be installed, and to have been regulated the degree of tightness of sealing systems with adjustable ring 10, the big O RunddichtringO 3 of installation seals between top connection 1 front end position and the rotation box cupling 4.Rotation box cupling 4 tops are connected with top connection 1 by internal thread, for preventing that connecting thread releases here, at the screw thread place pinning 2 have been installed.Rotation box cupling 4 bottoms are connected with adjustable ring 10 by internal thread, for preventing that connecting thread releases here, at the screw thread place time pinning 9 have been installed.With lower contact 11 machined valvular structure is arranged at rotation box cupling 4, can when inserting, realize the rotation of whole tubing string, again can be under the situation of throwing off, realizes that whole time tubing string bottom is then the function that top rotates.Sealing system between rotation box cupling 4 and the lower contact 11 is regulated by adjustable ring 10.
The operating principle of the utility model is:
In the completion work progress; This utility model instrument is connected G.I.H with sizing collar; Its lower contact 11 is connected with sizing collar, and top connection 1 is connected with bunch tube, in being lowered to process; Because this utility model lower tool deadweight, lower contact 11 front end valvular structures are in disengaged condition with rotation box cupling 4 valvular structures.Be hampered if be lowered in the process, do not go under the sleeve pipe, can make lower contact 11 front end valvular structures get in rotation box cupling 4 valvular structures, realize the transmission of moment of torsion, carry out reaming, make completion tubular column smooth down to the precalculated position through the rotation tubing string through slowly rotating tubing string.After putting in place under the completion tubular column, according to the tubing string length of G.I.H, put on repeatedly on ground and to put a segment distance, guarantee that lower contact 11 front end valvular structures and rotation box cupling 4 valvular structures are in disengaged condition.Seal when external casing packer expands, after the sizing collar circulation canal is opened, come into effect well cementing operation.Under the cooperation of other instrument of ground, realize the rotation of well cementation section completion tubular column, rotation rotating speed 10～15rpm through the rotating disk revoling tube.All can realize the rotation of well cementation section completion tubular column before the cementing and in the cementing practice process.
Claims (8)
1. circulator is used in a horizontal well screen casing crest water flooding mud well cementation; Form by top connection (1), last pinning (2), big O RunddichtringO (3), rotation box cupling (4), outer baffle ring (5), teflin ring (6), inner baffle ring (7), little O RunddichtringO (8), following pinning (9), adjustable ring (10), lower contact (11); It is characterized in that: said rotation box cupling (4) is inner to be the plug-in type valvular structure, and said rotation box cupling (4) top is threaded with top connection (1); Said lower contact (11) front end valvular structure places in rotation box cupling (4) valvular structure, and adjustable ring (10) is connected with rotation box cupling (4) lower thread.
2. circulator is used in horizontal well screen casing crest water flooding mud well cementation according to claim 1, and it is characterized in that: said lower contact (11) front end valvular structure is beloid.
3. circulator is used in horizontal well screen casing crest water flooding mud well cementation according to claim 2, and it is characterized in that: said rotation box cupling (4) upper internal threaded is threaded with top connection (1).
4. circulator is used in horizontal well screen casing crest water flooding mud well cementation according to claim 3, and it is characterized in that: said rotation box cupling (4) lower internal thread is threaded with adjustable ring (10).
5. circulator is used in horizontal well screen casing crest water flooding mud well cementation according to claim 4; It is characterized in that: said top connection (1) is installed pinning (2) with said rotation box cupling (4) threaded connection place, and said adjustable ring (10) is installed pinning (9) down with said rotation box cupling (4) threaded connection place.
6. circulator is used in horizontal well screen casing crest water flooding mud well cementation according to claim 5, it is characterized in that: said outer baffle ring (5), teflin ring (6), inner baffle ring (7), little O RunddichtringO (8) are formed the sealing system between said rotation box cupling (4) and the lower contact (11); Big O RunddichtringO (3) sealing is installed between said top connection (1) front end position and the rotation box cupling (4).
7. circulator is used in horizontal well screen casing crest water flooding mud well cementation according to claim 6, and it is characterized in that: said outer baffle ring (5) and inner baffle ring (7) are steel loop.
8. circulator is used in horizontal well screen casing crest water flooding mud well cementation according to claim 7, and it is characterized in that: said top connection (1) external surface is step-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202151099U CN202157781U (en) | 2011-06-23 | 2011-06-23 | Rotator for well cementation of the top of sieve tube of oil and gas horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202151099U CN202157781U (en) | 2011-06-23 | 2011-06-23 | Rotator for well cementation of the top of sieve tube of oil and gas horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202157781U true CN202157781U (en) | 2012-03-07 |
Family
ID=45765422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202151099U Expired - Lifetime CN202157781U (en) | 2011-06-23 | 2011-06-23 | Rotator for well cementation of the top of sieve tube of oil and gas horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202157781U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839940A (en) * | 2011-06-23 | 2012-12-26 | 中国石油天然气股份有限公司 | Rotator for cementing well at top of horizontal well screen pipe |
-
2011
- 2011-06-23 CN CN2011202151099U patent/CN202157781U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839940A (en) * | 2011-06-23 | 2012-12-26 | 中国石油天然气股份有限公司 | Rotator for cementing well at top of horizontal well screen pipe |
| CN102839940B (en) * | 2011-06-23 | 2016-02-10 | 中国石油天然气股份有限公司 | A kind of top cementing of horizontal well sieve tube well cementation circulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |