CN201041001Y - Drilling well bottom bushing longitudinal locking device - Google Patents
Drilling well bottom bushing longitudinal locking device Download PDFInfo
- Publication number
- CN201041001Y CN201041001Y CNU2006200118663U CN200620011866U CN201041001Y CN 201041001 Y CN201041001 Y CN 201041001Y CN U2006200118663 U CNU2006200118663 U CN U2006200118663U CN 200620011866 U CN200620011866 U CN 200620011866U CN 201041001 Y CN201041001 Y CN 201041001Y
- Authority
- CN
- China
- Prior art keywords
- spring
- locking device
- connecting axle
- locking piece
- clamping block
- 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
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a casing drilling bottom vertical locking device which comprises a salvage head, a locking cap, a locking piece, a spring, a locking piece pin, a connection shaft, a tool string and an outer casing. Wherein, the locking piece is assembled with the connection shaft by the locking piece pin. A hole which is fixed with one end of the spring is arranged at the inner side of the locking piece, and the other end of the spring is fixed with the lower end of the salvage head by the pin shaft. The salvage head is fixed with the connection shaft by the locking cap. When the casing drilling operation is executed, the locking piece is locked together with the outer casing by the effect of the spring to realize the effect of transmitting drilling pressure and preventing the tool string from penetrating upward. Due to that the locking device is designed uniquely and the locking piece moves freely, the strength of the utility model is high and other functions are also 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 fishing head, locking cap, clamping block, spring, lock dog pin, connecting axle, tool string and overcoat.Clamping block fits together by lock dog pin and connecting axle, and the inboard of clamping block is provided with an end of a hole and spring and fixes, and the other end of spring is fixed by the lower end of bearing pin and fishing head, and fishing head is fixed by locking cap and connecting axle.
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 vertical 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 a kind of casing drilling shaft bottom longitudinal locking device.
For solving the problems of the technologies described above, the casing drilling shaft bottom longitudinal locking device that the utility model is installed on the recoverable apparatus at bottom of casing tube drilled well comprises fishing head, locking cap, clamping block, spring, lock dog pin, connecting axle, tool string and overcoat, clamping block fits together by lock dog pin and connecting axle, the inboard of clamping block is provided with an end of a hole and spring and fixes, the other end of spring is fixed by the lower end of bearing pin and fishing head, and fishing head is fixed together by locking cap and connecting axle.The inboard of clamping block is provided with a hole, and the outside is a circular arc, and the bottom is semicircle, and the centre is provided with a through hole.Fishing head is fixed together by locking cap and connecting axle, and the bearing pin that fishing head is connected with spring is contained in the cannelure of connecting axle.
When carrying out casing drilling, casing drilling shaft bottom longitudinal locking device and tool string are formed a whole set of recoverable apparatus, and clamping block opens under the effect of spring, with the overcoat locking, and the effect of playing the moment of torsion that transmits overcoat and preventing to wear on a whole set of recoverable apparatus.Creep into end, on draw fishing head, drive spring, the pulling clamping block discharges locking, can reclaim a whole set of recoverable apparatus, the casing drilling end of job.The utility model is simple in structure, and is easy to use, safe and reliable, improves bit speed, reduces drilling cost greatly.
Description of drawings
Fig. 1. casing drilling shaft bottom longitudinal locking device schematic diagram
1. fishing head 2. locking caps 3. clamping blocks 4. springs 5. lock dog pins 6. connecting axles 7. tool strings 8. overcoats
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, clamping block 3 is fitted together by lock dog pin 5 and connecting axle 6, the inboard of clamping block 3 is provided with an end of a hole and spring 4 and fixes, and the other end of spring 4 is fixed by the lower end of bearing pin and fishing head 1.Fishing head 1 is fixed together by locking cap 2 and connecting axle 6.Connecting axle 6 is fixedlyed connected with tool string 7 by screw thread.Put into overcoat 8 after set of tools installs and form a whole set of casing drilling Bottom Hole Assembly (BHA).After recoverable apparatus at bottom of casing tube drilled well was put into overcoat 8, clamping block 3 opened under the effect of spring 4, with overcoat 8 lockings, the effect of playing the moment of torsion that transmits overcoat 8 and preventing to wear on a whole set of recoverable apparatus.Creep into end, on draw fishing head 1, drive spring 4, pulling clamping block 3 discharges locking.Change if need more bit change can reclaim a whole set of recoverable apparatus, can change casing drilling cementing tool string if creep into end.
Claims (3)
1. casing drilling shaft bottom longitudinal locking device that is installed on the recoverable apparatus at bottom of casing tube drilled well, it comprises fishing head (1), locking cap (2), clamping block (3), spring (4), lock dog pin (5), connecting axle (6), tool string (7) and overcoat (8), it is characterized in that: clamping block (3) fits together by lock dog pin (5) and connecting axle (6), the inboard of clamping block (3) is provided with an end of a hole and spring (4) and fixes, the other end of spring (4) is fixed by the lower end of bearing pin and fishing head (1), and fishing head (1) is fixed together by locking cap (2) and connecting axle (6).
2. according to the described casing drilling of claim 1 shaft bottom longitudinal locking device, it is characterized in that: the inboard of described clamping block (3) is provided with a hole, and the outside is a circular arc, and the bottom is semicircle, and the centre is provided with a through hole.
3. according to the described casing drilling of claim 1 shaft bottom longitudinal locking device, it is characterized in that: described fishing head (1) is fixed together by locking cap (2) and connecting axle (6), and fishing head (1) is contained in the cannelure of connecting axle (6) with the bearing pin that spring (4) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200118663U CN201041001Y (en) | 2006-11-29 | 2006-11-29 | Drilling well bottom bushing longitudinal locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200118663U CN201041001Y (en) | 2006-11-29 | 2006-11-29 | Drilling well bottom bushing longitudinal locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041001Y true CN201041001Y (en) | 2008-03-26 |
Family
ID=39252707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200118663U Expired - Fee Related CN201041001Y (en) | 2006-11-29 | 2006-11-29 | Drilling well bottom bushing longitudinal locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201041001Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305022A (en) * | 2011-08-12 | 2012-01-04 | 中国地质大学（武汉） | Salvage-type casing pipe drilling tool for drilling |
| CN104047560A (en) * | 2013-03-15 | 2014-09-17 | 中国石油天然气集团公司 | Underground remote control locking device and remote control locking method |
| CN106401518A (en) * | 2016-06-15 | 2017-02-15 | 西南石油大学 | Steel wire rope feeding device with leather bowl |
-
2006
- 2006-11-29 CN CNU2006200118663U patent/CN201041001Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305022A (en) * | 2011-08-12 | 2012-01-04 | 中国地质大学（武汉） | Salvage-type casing pipe drilling tool for drilling |
| CN104047560A (en) * | 2013-03-15 | 2014-09-17 | 中国石油天然气集团公司 | Underground remote control locking device and remote control locking method |
| CN104047560B (en) * | 2013-03-15 | 2016-12-28 | 中国石油天然气集团公司 | Down-hole remote-controlled lock locking apparatus and remote control locking method |
| CN106401518A (en) * | 2016-06-15 | 2017-02-15 | 西南石油大学 | Steel wire rope feeding device with leather bowl |
| CN106401518B (en) * | 2016-06-15 | 2018-08-17 | 西南石油大学 | A kind of steel wire rope feeder with leather cup |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101294480B (en) | Device for drilling miniature borehole on ultra-short radius of coiled tubing | |
| EP2808482A3 (en) | External grip tubular running tool | |
| CN102418478A (en) | Hollow whipstock for windowing and side drilling of branched well | |
| CN105840126A (en) | Linked-release hanger delivery tool | |
| CN201041001Y (en) | Drilling well bottom bushing longitudinal locking device | |
| CN102296950A (en) | Hydraulic shearing type sampling drilling tool | |
| CN201053294Y (en) | Rotary pushing type guiding drilling tool | |
| CN202417343U (en) | Rotatable casing shoe | |
| CN103362449B (en) | A kind of retraction type long stroke hydraulic power pressurizer | |
| CN201053295Y (en) | Slide pushing type guiding drilling tool | |
| CN201883976U (en) | Down-hole pipe salvaging cylinder | |
| CN206801512U (en) | A kind of underground continuous oil pipe fishing drags for integrated tool with cutting | |
| CN203022669U (en) | Drilling system for coring while drilling | |
| CN201037383Y (en) | Horizontal well ball type centralizer | |
| CN201241696Y (en) | Geological exploration drilling coal seam gas pressure determinator | |
| CN207144851U (en) | Drill rod assemblies and drilling equipment | |
| CN201943608U (en) | Excessively-moved pipe centering device | |
| CN206495646U (en) | Bearing clearance can compensate for formula helicoid hydraulic motor | |
| CN206830105U (en) | Break in a kind of well and fall drilling tool marine salvage equipment | |
| CN203130003U (en) | Differential type air drilling coring device | |
| CN201068760Y (en) | Oilfield down-hole salvager | |
| CN201041000Y (en) | Drilling well bottom bushing peripheral locking device | |
| CN203066917U (en) | Elastic clamping mechanism applicable to while drilling coring | |
| CN201851019U (en) | Anti-run drill | |
| CN203066922U (en) | Salvage mechanism applicable to while drilling coring |
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 |