CN2711373Y - Means for holding casing for casing hole-drilling - Google Patents
Means for holding casing for casing hole-drilling Download PDFInfo
- Publication number
- CN2711373Y CN2711373Y CN 200420072795 CN200420072795U CN2711373Y CN 2711373 Y CN2711373 Y CN 2711373Y CN 200420072795 CN200420072795 CN 200420072795 CN 200420072795 U CN200420072795 U CN 200420072795U CN 2711373 Y CN2711373 Y CN 2711373Y
- Authority
- CN
- China
- Prior art keywords
- wall
- main body
- casing
- sleeve pipe
- hole
- 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
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Abstract
Disclosed is a means for holding a casing for casing hole-drilling, solving the problems that in the present means for holding the casing, holding ability is low, jam releasing is difficult, and the inner wall of the casing is damaged. The utility model is characterized in that the lower part of the outer wall of a main body (1) which is sheathed with a half ring (5) is provided with a hole (10) for containing a ball (7); the inner wall of the main body (1) is step-shaped, and a heart pipe (2), an inner bush (4) matched with the outer wall of the heart pipe (2) and a pawl (6) matched with a shaft (3) are sequentially arranged from the inside to the outside of the inner wall of the main body (1); the semi-circle end surface of the pawl (6) is engaged with the tooth inner surface of the main body (1), and the other end surface of the pawl (6) is a tooth arc surface; the lower end of the pawl (6) is sequentially provided with an annular pressure cap (9) matched with the shaft (3) and a suspension body (8), the inner wall of the suspension body (8) is provided with steps, and the outer wall of the suspension body (8) is provided with a semi-circle annular groove (11); the annular pressure cap (9) and the inner wall of the main body (1) are in screw connection. The utility model is of strong holding power and of on releasing, and the jam releasing which is convenient and fast can be realized without damaging a casing body when drilling stopped.
Description
Technical field:
The utility model relates to the instrument that a kind of casing drilling is used, and belongs to casing drilling sleeve pipe clamper.
Background technology:
At present, what the type of drive of external casing drilling adopted is top-drive device, easy to control, quick, reliability is high, but costs an arm and a leg.And domestic casing drilling adopts rotating disk to drive, by sleeve pipe clamper transfer torque.Beijing exploration and development academy development and the sleeve pipe clamper of producing have in the mechanical type in the card and fluid pressure type two kinds on card, and cutting ferrule pepe gripper clamping ability is enough in the mechanical type, but the unfreezing difficulty, length consuming time is damaged internal surface of sleeve pipe; Cutting ferrule pepe gripper clamping ability is not enough in the fluid pressure type, and length consuming time, and damage internal surface of sleeve pipe can not satisfy the requirement of The field and production fully.
The utility model content:
Existing sleeve pipe clamper clamping ability is low, unfreezing is difficult and the problem of damage internal surface of sleeve pipe in order to solve, the utility model provides a kind of casing drilling sleeve pipe clamper, and this clamper clamping ability is enough big, and unfreezing is convenient, fast, and do not damage sleeve pipe, cheap.
The technical solution of the utility model is: this clamper comprises main body, the hole of inserting ball is arranged at the bottom of main body outer wall, and be nested with semi-ring, the inwall of main body is a stairstepping, from-inner-to-outer is equipped with core barrel successively, the neck bush that is nested with the core barrel outer wall and the ratchet that is nested with axle, the semicircle end face of ratchet and the engagement of the profile of tooth inner surface of main body, the other end is the thread form arc surface, the lower end of ratchet is equipped with annular pressure cap successively and inwall has step, outer wall that the suspension body of semi-circular annular groove is arranged.
Above-mentioned said axle, ratchet are respectively eight; The three seals circle is arranged respectively at the top of neck bush outer wall and bottom; Hole, ball are respectively 16.
The beneficial effect that the utlity model has is: because this clamper has been installed one group of ratchet in main body, and the step in the annular suspension body can block casing coupling, makes sleeve pipe be unlikely to go here and there up and down.When rig crept into, ratchet tightly was stuck on the outer wall of casing coupling, and chucking power is big, do not thread off, and unfreezing was convenient, fast, stopped boring to get final product unfreezing, did not damage sleeve body.
Description of drawings:
Accompanying drawing 1 is that structure of the present utility model is partly cutd open figure.
Accompanying drawing 2 is A-A sectional views of accompanying drawing 1.
1-main body among the figure, 2-core barrel, 3-axle, 4-neck bush, 5-semi-ring, 6-ratchet, 7-ball, 8-suspension body, 9-pressure cap, 10-hole, 11-groove, 12-through hole, 13-boss.
The specific embodiment:
Below in conjunction with accompanying drawing will the utility model is described in further detail:
By shown in Figure 1, this casing drilling comprises main body 1 with the sleeve pipe clamper, the bottom of main body 1 outer wall evenly has four holes 10 inserting ball 7, and be nested with semi-ring 5, and eight uniform through holes 12 on the boss 13 of its outer wall, and eight through holes 12 are nested with eight axles 3 respectively, the inwall of main body 1 is a stairstepping, from-inner-to-outer is equipped with core barrel successively, the neck bush 4 that is nested with core barrel 2 outer walls reaches and axle 3 ratchets that are nested 6, the semicircle end face of ratchet 6 and the engagement of the profile of tooth inner surface of main body 1, the other end is the thread form arc surface, and annular pressure cap 9 and inwall that the lower end of ratchet 6 is equipped with successively with main body 1 inwall screwed connection have step, outer wall has the suspension body 8 of semi-circular annular groove 11.
In actual use, an end of main body 1 is connected with kelly bar, inserts casing coupling in the cavity that forms between the neck bush 4 of the other end and ratchet 6, and the thread form arc surface of ratchet 6 is stuck on the outer wall of box cupling; Then, insert suspension body 8, again ball 7 is put into by hole 10 in the dome-type groove 11 of suspension body 8 outer walls, semi-ring 5 is installed at last again, make suspension body 8 fixing; Simultaneously, the step in the suspension body 8 blocks casing coupling, and sleeve pipe can not be gone here and there up and down.When drilling well began, rotating disk drove kelly bar and rotates, and drove ratchet 6 by main body 1 and rotated, and the thread form arc surface of ratchet 6 other ends is stuck on the outer wall of sleeve pipe, and moment of torsion is passed to sleeve pipe, and sleeve pipe is crept into.When stopping boring, drilling rod reverses, and ratchet 6 can break away from sleeve outer wall, unfreezing.This clamper chucking power is big, do not thread off, and unfreezing is convenient, fast, stops boring to get final product unfreezing, does not damage sleeve body.
Claims (6)
1, a kind of casing drilling sleeve pipe clamper, comprise main body (1), it is characterized in that: the bottom of main body (1) outer wall has the hole (10) of inserting ball (7), and be nested with semi-ring (5), the inwall of main body (1) is a stairstepping, from-inner-to-outer is equipped with core barrel (2) successively, the neck bush (4) that is nested with core barrel (2) outer wall reaches the ratchet (6) that is nested with axle (3), the profile of tooth inner surface engagement of the semicircle end face of ratchet (6) and main body (1), the other end is the thread form arc surface, and the lower end of ratchet (6) is equipped with annular pressure cap (9) successively and inwall has step, outer wall has the suspension body (8) of semi-circular annular groove (11).
2, a kind of casing drilling sleeve pipe clamper according to claim 1 is characterized in that: the boss (13) of main body (1) outer wall has eight uniform through holes (12).
3, a kind of casing drilling sleeve pipe clamper according to claim 1 and 2 is characterized in that: axle (3) is eight, and is nested with through hole (12).
4, a kind of casing drilling sleeve pipe clamper according to claim 1, it is characterized in that: ratchet (6) is eight.
5, a kind of casing drilling sleeve pipe clamper according to claim 1 is characterized in that: the three seals circle is arranged respectively at the top and the bottom of neck bush (4) outer wall.
6, a kind of casing drilling sleeve pipe clamper according to claim 1 is characterized in that: hole (10), ball (7) are respectively 16, and hole (10) are distributed on the bottom of main body (1) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420072795 CN2711373Y (en) | 2004-07-07 | 2004-07-07 | Means for holding casing for casing hole-drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420072795 CN2711373Y (en) | 2004-07-07 | 2004-07-07 | Means for holding casing for casing hole-drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2711373Y true CN2711373Y (en) | 2005-07-20 |
Family
ID=36192476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420072795 Expired - Fee Related CN2711373Y (en) | 2004-07-07 | 2004-07-07 | Means for holding casing for casing hole-drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2711373Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234657A (en) * | 2014-09-23 | 2014-12-24 | 江苏金石科技有限公司 | Double-limiting metal sealing oil pipe suspender |
-
2004
- 2004-07-07 CN CN 200420072795 patent/CN2711373Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234657A (en) * | 2014-09-23 | 2014-12-24 | 江苏金石科技有限公司 | Double-limiting metal sealing oil pipe suspender |
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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: 20050720 Termination date: 20100707 |