CN102953699A - Synchronous locking device of casing pipe well drilling shaft bottom tool - Google Patents
Synchronous locking device of casing pipe well drilling shaft bottom tool Download PDFInfo
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- CN102953699A CN102953699A CN2011102549679A CN201110254967A CN102953699A CN 102953699 A CN102953699 A CN 102953699A CN 2011102549679 A CN2011102549679 A CN 2011102549679A CN 201110254967 A CN201110254967 A CN 201110254967A CN 102953699 A CN102953699 A CN 102953699A
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- clamping block
- locking
- casing pipe
- shaft bottom
- locking device
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Abstract
The invention discloses a synchronous locking device of a casing pipe well drilling shaft bottom tool. The synchronous locking device comprises a hollow cavity formed by connecting an upper connector and a base casing pipe, and a locking and unlocking mechanism arranged in the hollow cavity, wherein the locking and unlocking mechanism comprises a fishing head, an unlocking cylinder, a locking sleeve, a locking block, a locking block pin shaft, a locking block body, a supporting spring and a lower connector. The synchronous locking device of the casing pipe well drilling shaft bottom tool has the beneficial effects that axial (longitudinal) and rotary (circumferential) synchronous locking of a shaft bottom recyclable device is realized, the structure is simple and the synchronous locking device is safe and reliable; an inner through diameter of the base casing pipe is increased and a standard drill bit can be selected as a pilot hole drill bit; front and back parts of a locking assembly are provided with strengthening blocks so that the stability of the locking assembly is increased; the base casing pipe is independently provided with the locking sleeve and is made of a wear-resisting material and high-strength steel, and damages caused by contacting with the locking block are reduced, so that the whole service life of a recyclable tool string of a casing pipe well drilling shaft bottom is prolonged and the casing pipe well drilling cost is saved.
Description
Technical field
The present invention relates to the underground operation tool field, specifically a kind of tool synchronous locking device at shaft bottom of bushing well-drilling.
Background technology
When utilizing sleeve pipe to replace drilling rod to do drill string to drill bit transmitting torque and conveying liquid energy, connection drillable drill bit below sleeve pipe carries out well cementing operation after a drill bit is finished drillng operation.If need to continue to carry out drillng operation to the deep, then the drillable bit drills 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 drillng operation, in drilling process, need more bit change, thereby need the genlocing of well drilling well bottom instrument between the moving member that is connected with drill bit and the fixture.Present lock mode all is circumferentially and vertically to lock step by step, complex structure, and latus rectum is little in the seat end sleeve pipe, and pilot bit needs particular design, and pilot bit is little, and the reaming hole task of reamer is heavy, and construction cost is high.
Summary of the invention
Purpose of the present invention is exactly the defective that exists for prior art, and the tool synchronous locking device at shaft bottom of bushing well-drilling of a kind of compact conformation, circumferential and vertical genlocing, release is provided.
The present invention is achieved by the following technical solutions:
Comprise the cavity that top connection, seat end sleeve pipe connect to form, and be arranged on the interior the locking and unlocking mechanism of cavity, it is characterized in that: the locking and unlocking mechanism comprises fishing head, separates lock cylinder, locks cover, clamping block, clamping block bearing pin, clamping block body, supporting spring, lower contact; Wherein, the locking cover connects in the sleeve pipe of the present end; Combining structure or fishing head and upper wiper block integrative-structure that fishing head adopts fishing head to be connected with upper wiper block, upper wiper block top is provided with the convex edge that is slidingly matched with cavity, and upper wiper block bottom is connected with solution lock cylinder top; Separate the straight trough that two symmetries are axially offered at the lock cylinder middle part, separate the elongated slot that two symmetries are radially offered in the lock cylinder bottom, separating lock cylinder bottom inner sleeve clamping block body; Radially axis hole is offered in clamping block body upper end, and the lower end connects return connector; Clamping block is the v-shaped structure of two clamping block combinations, be provided with axis hole at its involutory end, after the clamping block bearing pin passes the axis hole of clamping block, clamping block body from inside to outside successively, two external parts of clamping block bearing pin form axial sliding fit with the elongated slot of separating lock cylinder, supporting spring is located between two clamping blocks, and the openend of two clamping blocks consists of lock fit with the locking cover after stretching out the straight trough of separating lock tube.
The lock fit that locks cover and clamping block comprises following mode: the one, and locking cover bottom is provided with the vertically groove of symmetry of even number, and the openend of clamping block is pegged graft with groove and is cooperated; The 2nd, locking cover bottom is provided with the vertically plush copper of symmetry of even number, and groove is axially offered in the openend neighboring of clamping block, and the plush copper of locking cover is pegged graft with the groove of clamping block and cooperated; The 3rd, groove is axially offered in the openend neighboring of clamping block, and being healthy and strong of stretching out after cooperating by keyway and key body being connected of locking cover and seat end sleeve pipe consists of grafting with the groove of clamping block and cooperate.
The locking cover leans against on the lower surface of top connection; The supporting spring that is provided with between two clamping blocks is torsion spring, and lower contact is return connector.
Torsion spring set is contained on the clamping block bearing pin, and its two ends act on respectively the clamping block openend.
The invention has the beneficial effects as follows: realize axial (vertically) and rotation (circumferentially) genlocing to recoverable apparatus at bottom, simple in structure, safe and reliable; Increased the interior latus rectum of seat end sleeve pipe, pilot bit just can be selected unit-type drill head; Before and after the locking assembly wiper block is arranged, increased the stability of locking assembly; Design separately the locking cover on the sleeve pipe of the present end, adopted high-abrasive material and high strength steel, reduced the damage when contact with clamping block, thereby improved the whole service life of the recyclable tool string of drilling well bottom, saving casing drilling cost.
Description of drawings
Fig. 1 is tool synchronous locking device at shaft bottom of bushing well-drilling structural representation of the present invention.
Fig. 2 is A-A sectional view among Fig. 1.
Among the figure: 1. top connection, 2. fishing head is 3. gone up wiper block, 4. separates lock cylinder, 5. locking cover, 6. clamping block, 7. clamping block bearing pin, 8. clamping block body, 9. return connector, 10. at the bottom of sleeve pipe, 11. torsion springs, 12. circlips for shaft.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further details.
The main body formation of this device comprises that top connection 1, a seat end sleeve pipe connect 10 and connect the cavity of composition, and is arranged on the locking and unlocking mechanism in the cavity.The locking and unlocking mechanism comprises that fishing head 2, solution lock cylinder 4, locking cover 5, clamping block 6, clamping block bearing pin 7, clamping block body 8, torsion spring 7, return connector 9(preferably use during special operation, and general job uses ordinary couplings to get final product).Wherein, locking cover 5 directly welds or connects in the sleeve pipe of the present end 10 by pin key.The combining structure (being fishing head and upper wiper block integrative-structure also) that fishing head adopts fishing head 2 to be threaded with upper wiper block 3, upper wiper block 3 tops are provided with the convex edge that is slidingly matched with cavity, and upper wiper block 3 bottoms are threaded with solution lock cylinder 4 tops.Separate the straight trough that two symmetries are axially offered at lock cylinder 4 middle parts, separate the elongated slot (two ends of elongated slot are preferably semicircle) of radially offering two symmetries in lock cylinder 4 bottoms, separating lock cylinder 4 bottom inner sleeve clamping block bodies 8.Radially axis hole is offered in clamping block body 8 upper ends, and the lower end connects return connector 9; Clamping block 6 is the v-shaped structure (similar hand vice jaw structure) of two clamping block combinations, be provided with axis hole at its involutory end, after clamping block bearing pin 7 passes the axis hole of clamping block 6, clamping block body 8 from inside to outside successively, 7 two external parts of clamping block bearing pin form axial sliding fit with the elongated slot of separating lock cylinder 4, by separating relatively moving of lock tube 4 relative clamping block bearing pins 7, realize release.Torsion spring (also can adopt straight spring or leaf spring) 11 is located between two clamping blocks 6, and the openend of two clamping blocks 6 consists of lock fit with locking cover 5 after stretching out the straight trough of separating lock tube 4.
Locking cover 5 comprises following mode with the lock fit of clamping block 6: the one, and locking cover 5 bottoms are provided with four vertically symmetrical grooves, and the openend of clamping block 6 directly inserts in the groove of locking cover 5, forms vertical and circumferential double locking cooperation.The 2nd, locking is overlapped 5 bottoms and is provided with six vertically plush coppers of symmetry, and groove is axially offered in the openend neighboring of clamping block 6, and the plush copper of locking cover 5 is pegged graft with the groove of clamping block 6 and cooperated the vertical and circumferential double locking of rear formation to cooperate; The 3rd, groove is axially offered in the openend neighboring of clamping block 6, after cooperating by keyway and key body being connected of locking cover 5 and seat end sleeve pipe 10, expose be healthy and strong and the groove of clamping block 6 consist of peg graft cooperate after, form equally vertical and circumferential double locking cooperation.Certainly based on the prompting of such scheme, can also produce other fit system, do not enumerate one by one.
For the ease of assembling, locking cover 5 leans against on the lower surface of top connection; Torsion spring set is contained on the clamping block bearing pin, and its two ends act on respectively the clamping block openend; Clamping block bearing pin 7 is to realize axial limiting by circlip for shaft 12.
When adopting the present invention to carry out the casing drilling operation, return connector 9 lower ends link together by screw thread and other drilling tool.Seat end sleeve pipe 10 and locking cover 5 assemble when lower brill, and locking cover 5 upper ends lean against on the shoulder of top connection 1.When carrying out casing drilling, tool synchronous locking device at shaft bottom of bushing well-drilling and tool string form a whole set of recoverable apparatus, when the shoulder of the return connector 9 in the recyclable tool string arrives seat end sleeve pipe 10 locating shoulder, clamping block opens under the effect of torsion spring 11 finishes vertical locking, when the pressurization rotary drilling, clamping block 6 automatically becomes locked on the lock sleeve 5, thus the vertical and circumferential genlocing of implementation tool, the effect of playing transmitting torque and preventing from altering on a whole set of recoverable apparatus.Creep into when finishing, on carry fishing head 2, drive that to separate lock cylinder 4 up, clamping block 6 openends shrink, and discharge locking, reclaim a whole set of recoverable apparatus, the casing drilling end of job.
Utilize the present invention to be installed on the recoverable apparatus at bottom of casing tube drilled well, realize that genlocing and the release to recoverable apparatus reclaimed in casing drilling.
Claims (4)
1. tool synchronous locking device at shaft bottom of bushing well-drilling, comprise the cavity that top connection, seat end sleeve pipe connect to form, and be arranged on the interior the locking and unlocking mechanism of cavity, it is characterized in that: the locking and unlocking mechanism comprises fishing head, separates lock cylinder, locks cover, clamping block, clamping block bearing pin, clamping block body, supporting spring, lower contact; Wherein, the locking cover connects in the sleeve pipe of the present end; Combining structure or fishing head and upper wiper block integrative-structure that fishing head adopts fishing head to be connected with upper wiper block, upper wiper block top is provided with the convex edge that is slidingly matched with cavity, and upper wiper block bottom is connected with solution lock cylinder top; Separate the straight trough that two symmetries are axially offered at the lock cylinder middle part, separate the elongated slot that two symmetries are radially offered in the lock cylinder bottom, separating lock cylinder bottom inner sleeve clamping block body; Radially axis hole is offered in clamping block body upper end, and the lower end connects return connector; Clamping block is the v-shaped structure of two clamping block combinations, be provided with axis hole at its involutory end, after the clamping block bearing pin passes the axis hole of clamping block, clamping block body from inside to outside successively, two external parts of clamping block bearing pin form axial sliding fit with the elongated slot of separating lock cylinder, supporting spring is located between two clamping blocks, and the openend of two clamping blocks consists of lock fit with the locking cover after stretching out the straight trough of separating lock tube.
2. tool synchronous locking device at shaft bottom of bushing well-drilling according to claim 1, it is characterized in that the lock fit that locks cover and clamping block comprises following mode: the one, locking cover bottom is provided with the vertically groove of symmetry of even number, and the openend of clamping block is pegged graft with groove and is cooperated; The 2nd, locking cover bottom is provided with the vertically plush copper of symmetry of even number, and groove is axially offered in the openend neighboring of clamping block, and the plush copper of locking cover is pegged graft with the groove of clamping block and cooperated; The 3rd, groove is axially offered in the openend neighboring of clamping block, and being healthy and strong of stretching out after cooperating by keyway and key body being connected of locking cover and seat end sleeve pipe consists of grafting with the groove of clamping block and cooperate.
3. tool synchronous locking device at shaft bottom of bushing well-drilling according to claim 1 and 2 is characterized in that: lock cover and lean against on the lower surface of top connection; The supporting spring that is provided with between two clamping blocks is torsion spring; Lower contact is return connector.
4. tool synchronous locking device at shaft bottom of bushing well-drilling according to claim 3, it is characterized in that: torsion spring set is contained on the clamping block bearing pin, and its two ends act on respectively the clamping block openend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102549679A CN102953699A (en) | 2011-08-31 | 2011-08-31 | Synchronous locking device of casing pipe well drilling shaft bottom tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102549679A CN102953699A (en) | 2011-08-31 | 2011-08-31 | Synchronous locking device of casing pipe well drilling shaft bottom tool |
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| Publication Number | Publication Date |
|---|---|
| CN102953699A true CN102953699A (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102549679A Pending CN102953699A (en) | 2011-08-31 | 2011-08-31 | Synchronous locking device of casing pipe well drilling shaft bottom tool |
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| CN (1) | CN102953699A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100220A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气集团公司 | Anchoring device and method for PE (polyethylene) screen pipe well completion of coal-bed gas horizontal well |
| CN109611034A (en) * | 2019-01-31 | 2019-04-12 | 吉林大学 | Flat plug-in drill rod joint attachment device and its application method in universal stress |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187919A (en) * | 1977-05-03 | 1980-02-12 | Diamant Boart | Cable-type core barrel |
| US5592994A (en) * | 1994-12-15 | 1997-01-14 | Jks Boyles International Inc. | Propulsion seal for wire line core drilling apparatus |
| CN201771454U (en) * | 2010-08-31 | 2011-03-23 | 江苏省无锡探矿机械总厂有限公司 | Recyclable drilling rig |
| US20110100719A1 (en) * | 2008-02-26 | 2011-05-05 | Sandvik Intellectual Property Ab | Locking mechanism for a ground drill |
| CN202220547U (en) * | 2011-07-28 | 2012-05-16 | 武济群 | Ladder post reinforcing assembly and extension ladder with same |
-
2011
- 2011-08-31 CN CN2011102549679A patent/CN102953699A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187919A (en) * | 1977-05-03 | 1980-02-12 | Diamant Boart | Cable-type core barrel |
| US5592994A (en) * | 1994-12-15 | 1997-01-14 | Jks Boyles International Inc. | Propulsion seal for wire line core drilling apparatus |
| US20110100719A1 (en) * | 2008-02-26 | 2011-05-05 | Sandvik Intellectual Property Ab | Locking mechanism for a ground drill |
| CN201771454U (en) * | 2010-08-31 | 2011-03-23 | 江苏省无锡探矿机械总厂有限公司 | Recyclable drilling rig |
| CN202220547U (en) * | 2011-07-28 | 2012-05-16 | 武济群 | Ladder post reinforcing assembly and extension ladder with same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100220A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气集团公司 | Anchoring device and method for PE (polyethylene) screen pipe well completion of coal-bed gas horizontal well |
| CN109611034A (en) * | 2019-01-31 | 2019-04-12 | 吉林大学 | Flat plug-in drill rod joint attachment device and its application method in universal stress |
| CN109611034B (en) * | 2019-01-31 | 2023-12-19 | 吉林大学 | Universal stress internal flat plug-in type drill rod joint connecting device and use method thereof |
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Application publication date: 20130306 |