CN201041000Y - Drilling well bottom bushing peripheral locking device - Google Patents
Drilling well bottom bushing peripheral locking device Download PDFInfo
- Publication number
- CN201041000Y CN201041000Y CNU200620011863XU CN200620011863U CN201041000Y CN 201041000 Y CN201041000 Y CN 201041000Y CN U200620011863X U CNU200620011863X U CN U200620011863XU CN 200620011863 U CN200620011863 U CN 200620011863U CN 201041000 Y CN201041000 Y CN 201041000Y
- Authority
- CN
- China
- Prior art keywords
- locking
- lock body
- locking device
- casing
- drilling
- 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 - Fee Related
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 32
- 230000002093 peripheral effect Effects 0.000 title 1
- 239000007788 liquid Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a casing drilling well bottom circumferential locking device, comprising a locking body, a locking bond, an outer casing, a bypass valve, and a dynamical drilling tool. The locking body is assembled with the outer casing via the locking bond, the lower end of the locking body is connected with the dynamical drilling tool through thread; the upper end of the locking body is connected with the bypass valve by thread, which is assembled with other tools to be a casing drilling well bottom recoverable tool string. When doing casing drilling operation, the locking body is locked together with the outer casing by the locking bond, which transfers the torque and bears the weight of the tool string. Because the locking bond is unique in structure design, not only the strength is high, the processing is easy, but also the sit-hanging structure is easy to be realized.
Description
Technical field
The utility model relates to the circumferential locking device in a kind of casing drilling shaft bottom, and it comprises lock body, locking key, overcoat, bypass valve, power drilling tool.Lock body fits together by locking key and overcoat, and the lower end of lock body is connected with power drilling tool by screw thread, and the upper end of lock body is connected with bypass valve by screw thread.
Background technology
Utilize sleeve pipe to replace drilling rod to make drill string at present to drill bit transfer torque and conveying liquid energy, below sleeve pipe, connect the drillable drill bit, after finishing drillng operation, a drill bit carries out well cementing operation, if need to continue to the deep drillng operation, then the drillable bit drills is fallen to continue to creep into, but owing to the life-span of drill bit is limit, this kind casing drilling mode is only applicable to surface pipe, can't realize for the middle-deep well operation, because in drilling process, need more bit change, thereby need circumferential locking between moving member that is connected with drill bit and the fixture.
The utility model content
The technical problems to be solved in the utility model provides the circumferential locking device in a kind of casing drilling shaft bottom.
For solving the problems of the technologies described above, the circumferential locking device in casing drilling shaft bottom that the utility model is installed on the recoverable apparatus at bottom of casing tube drilled well comprises lock body, locking key, overcoat, bypass valve, power drilling tool, lock body fits together by locking key and overcoat, and the lower end of lock body is connected with power drilling tool by screw thread; The upper end of lock body is connected with bypass valve by screw thread, dresses up the recyclable tool string in casing drilling shaft bottom with other set of tools.The design of the cylindrical of lock body has the low wide and up narrow groove of not get usedding to that matches with locking key, is provided with the groove of rule simultaneously again, and the centre is provided with the through hole of flow liquid body.It is cone that locking key is designed to the side, and the upper end is semicircular cuboid.
When carrying out casing drilling, circumferential locking device in casing drilling shaft bottom and tool string are formed a whole set of recoverable apparatus, and lock body locks with overcoat under the effect of locking key, play the moment of torsion of transmission overcoat and the effect of a whole set of recoverable apparatus weight of support.Creep into end, on carry bypass valve, drive lock body and break away from locking key, discharge locking, make retracting device obtain recovery, reach the more purpose of bit change of casing drilling.
Description of drawings
Fig. 1. the circumferential locking device schematic diagram in casing drilling shaft bottom
1. lock body 2. locking keies 3. overcoats 4. bypass valve 5. power drilling tools
The specific embodiment
Now the utility model will be further described in conjunction with Figure of description.
When adopting the utility model to carry out the casing drilling operation, just lock body 1 fits together by locking key 2 and overcoat 3, the design of the cylindrical of lock body 1 has the low wide and up narrow groove of not get usedding to that matches with locking key 2, is provided with the groove of rule simultaneously again, and the centre is provided with the through hole of flow liquid body; It is cone that locking key 2 is designed to the side, and the upper end is semicircular cuboid; The lower end of lock body 1 is connected with power drilling tool 5 by screw thread; The upper end of lock body 1 is connected with bypass valve 4 by screw thread, dresses up the recyclable tool string in casing drilling shaft bottom with other set of tools.
After recoverable apparatus at bottom of casing tube drilled well was put into overcoat 3, lock body 1 locked with overcoat 3 under the effect of locking key 2, played the moment of torsion of transmission overcoat 3 and the effect of a whole set of recoverable apparatus weight of support.Creep into end, on carry bypass valve 4, drive lock body 1 and break away from locking key 2, discharge locking, can reclaim a whole set of recoverable apparatus, the casing drilling end of job.
Claims (3)
1. circumferential locking device in casing drilling shaft bottom that is installed on the recoverable apparatus at bottom of casing tube drilled well, it comprises lock body (1), locking key (2), overcoat (3), bypass valve (4), power drilling tool (5), it is characterized in that: lock body (1) fits together by locking key (2) and overcoat (3), and the lower end of lock body (1) is connected with power drilling tool (5) by screw thread; The upper end of lock body (1) is connected with bypass valve (4) by screw thread.
2. according to the circumferential locking device in the described casing drilling of claim 1 shaft bottom, it is characterized in that: the design of the cylindrical of described lock body (1) has the low wide and up narrow groove of not get usedding to that matches with locking key (2), be provided with simultaneously the groove of rule again, the centre is provided with the through hole of flow liquid body.
3. according to the described casing drilling of claim 1 shaft bottom longitudinal locking device, it is characterized in that: it is cone that described locking key (2) is designed to the side, and the upper end is semicircular cuboid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620011863XU CN201041000Y (en) | 2006-11-29 | 2006-11-29 | Drilling well bottom bushing peripheral locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620011863XU CN201041000Y (en) | 2006-11-29 | 2006-11-29 | Drilling well bottom bushing peripheral locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041000Y true CN201041000Y (en) | 2008-03-26 |
Family
ID=39252706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200620011863XU Expired - Fee Related CN201041000Y (en) | 2006-11-29 | 2006-11-29 | Drilling well bottom bushing peripheral locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201041000Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909100A (en) * | 2022-05-17 | 2022-08-16 | 巴州盛业石油技术服务有限公司 | Drilling device and drilling method for drill bit replaceable type hydraulic power casing |
-
2006
- 2006-11-29 CN CNU200620011863XU patent/CN201041000Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909100A (en) * | 2022-05-17 | 2022-08-16 | 巴州盛业石油技术服务有限公司 | Drilling device and drilling method for drill bit replaceable type hydraulic power casing |
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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: 20080326 Termination date: 20091229 |