CN85200364U

CN85200364U - Pneumatic boring grab for drilling

Info

Publication number: CN85200364U
Application number: CN 85200364
Authority: CN
Inventors: 边九重; 丁成科; 辛秀琴; 徐盛; 刘松升
Original assignee: BIAN JIOUCHUNG DING CHENKE XIN XIOUQIN XU SHENG LIU SONGSHENG
Current assignee: BIAN JIOUCHUNG DING CHENKE XIN XIOUQIN XU SHENG LIU SONGSHENG
Priority date: 1985-04-01
Filing date: 1985-04-01
Publication date: 1986-06-25

Abstract

The utility model discloses a pneumatic boring caliper for well drilling mouse hole, belonging to an improvement of petroleum well drilling wellhead tools. The well drilling mouse holes are connected with single device at present, and still need manpower to move and lift a caliper and strike a back-plier; the existing single connection devices have complicated structure. The pneumatic boring caliper for well drilling mouse hole designed by the utility model has the advantages of convenient operation, artful structure and high reliability; an air cylinder drives two caliper bodies, a drill stem connecting joint is seated on a clamping board, and caliper teeth are clamped on the joint so as to exchange and turn over the position of the clamping board and a tooth seat. The pneumatic boring caliper has multiple uses, such as clamping a drill stem and a drill collar, and flinging drills. The air cylinder is clamped tightly, and the back-plier is not stroke; the pneumatic boring caliper can bear positive and negative torques, and an air switch can be operated automatically so as to obtain automation.

Description

Pneumatic boring grab for drilling

The utility model belongs to the improvement of oil drilling tool.

Till proposing the utility model, when the drilling well mouse hole makes up a joint, be still manual operations, with manually removing elevator and beating back-up tong, the tool joint seat bears the button reaction torque by back-up tong on elevator.Existing several drilling well mouse holes device that makes up a joint generally has the upset clamp, the tool joint seat on clamp, clamp supporting drilling rod; Have pincers tooth seat tooth and that off-centre or climbing roller structure are arranged, the pincers tooth is bitten tool joint, bears the button reaction torque; The structure that caliper can be floated, power and operation control system.

For example: the international instrument limited company of the U.S. (INTERNATIONAL TOOLCOMPANY INC) adopts a kind of root device that singly connects of No. 3293959 patent manufacturings of the U.S., comprises clamp and draws two parts of kelly bar mechanism.The clamp primary structure is the turnover clamp of air cylinder driven; Use another air cylinder driven disk again, make five to have the tooth seat that clamps tooth and rotate, tighten or unclamp, belong to the tight action of stinging of over-center type; Four pillar supporting clamp have floating spring in the pillar, clamp are relocatable.

Because the utility model does not draw kelly bar mechanism, and this is not set forth.

Action was many when this clamp shortcoming was work, and complex structure be cannot see tool joint, operating difficulties when particularly going up button.

Main points of the present utility model are in order to overcome the problem of prior art, a kind of overall plan of novelty has been proposed, its primary structure has two calipers, be placed on the fixed head, caliper one end is connected with fixed head by bearing pin, the other end is linked together two calipers clamp and has the tooth seat that clamps tooth by cylinder and is fixed on the caliper by bearing pin, and caliper, clamp and tooth seat become one.With the bearing pin is axle, by the reciprocating motion of cylinder, directly drives two calipers, finishes chucking or unclamps action, and simple in structure, action is few, scheme advanced person.

The tool joint seat is on clamp, and the pincers tooth is bitten tool joint on the tooth seat, is suitable for when creeping at the mouse hole stacks.Utilize transposing or upset clamp and tooth seat, the drill collar that is suitable for different size when clamp and tooth seat during at diverse location is detained on mouse hole, and completion replaces the elevator that uses at mouse hole when getting rid of drilling tool, and the scope of application is wide.

Below fixed head, on the bearing pin of be connected and fixed plate and caliper spring is housed, the compression of spring is adjustable, and two calipers can float, and force request when detaining in the adaptation is simpler than existing relocation mechanism.

With cylinder work chucking power, arrive the bearing pin of caliper rotation with cylinder apart from greater than clamping tooth to the bearing pin distance, increase clamping force, the moment of torsion that improves and satisfy the demand, simple.Because the tooth seat directly connects with caliper, does not have structures such as off-centre or climbing, sting tight tool joint with pincers tooth normal pressure, can bear the moment of torsion of both direction.

By driller's operation, come control cylinder with an air cock, can finish and all go up the shackle action, realized automation.

Fixed head can be welded on the mouse hole pipe, also can add the weldering earrings on fixed head and mouse hole pipe, and with Bolt Connection, installation and removal are convenient.Locating piece keeps and mouse hole centering, and bears moment of torsion in order to be fixed on chucking or pneumatic clamp position when unclamping.

When the utility model makes up a joint at the drilling well mouse hole, replaced elevator and back-up tong, compared with the prior art, had simple in structurely, the scope of application is wide, and sturdy advantage such as reliable particularly can be worked being full of under mud and the freezing mal-condition.

Description of drawings:

Fig. 1, the pneumatic clamp sectional view of drilling well mouse hole.

Fig. 2, the pneumatic clamp vertical view of drilling well mouse hole.

In Fig. 1 and Fig. 2:

1. spring 2. rings 3. clamps 4. clamp teeth 5. calipers 6. bearing pins 7. packing rings 8. bearing pins 9. packing rings 10. bearing pins 11. tooth seats 12. split pins 13. bearing pins 14. packing rings 15. nuts 16. fixed heads 17. locating pieces 18. locating pieces 19. calipers 20. cylinders 21. joints

Fig. 3, the pneumatic clamp bit freezing of drilling well mouse hole bar schematic partial sectional view.

Fig. 4, the pneumatic clamp bit freezing of drilling well mouse hole is schematic partial sectional view quickly.

Fig. 5, the pneumatic clamp of drilling well mouse hole replace the elevator schematic partial sectional view.

Implementation:

Install:

Fixed head (16) is connected with the mouse pipe, and method is fixed head (16) to be welded on the mouse hole pipe or with bolt connect, and is welded in the earrings on fixed head (16) and the mouse hole pipe respectively, and two kinds of methods are selected by drilling team.

By Fig. 1 and Fig. 2 the pneumatic clamp of drilling well mouse hole are installed, the air cock of operation cylinder (20) is installed on driller's operating desk, is operated by the driller.

Make up a joint:

The driller operates air cock, the piston rod of cylinder (20) stretches out, push two calipers (5 open, 19) the mouse hole clamp are in open mode, mention and treat that stacks (22) puts into mouse hole, when the tool joint step when clamp (3) upper surface, the driller operates air cock, the piston rod of cylinder (20) returns, the tool joint seat is on clamp (3), pincers teeth (4) bite the tool joint body, as Fig. 3, at this moment be on the available power sub button and tong link closely, because spring (1) is compressible, caliper (5,19) can upwards float, and has finished the mouse hole operation that makes up a joint.

Connect drill collar:

In Fig. 3, with clamp (3) turnback, perhaps after with clamp (3) turnback, with tooth seat (11) turnback, as Fig. 4, pincers teeth (4) are bitten drill collar (23) again, be stuck in safety slip seat on the drill collar on the pneumatic clamp of drilling well mouse hole, operating process is the same with making up a joint.

Get rid of drilling tool and replace elevator:

In Fig. 3, clamp (3) and tooth seat (11) are replaced up and down, as Fig. 5, promptly available clamp (3) bit freezing bar (22) body, tool joint step seat replace elevator or other situation when being used to get rid of drilling tool on clamp (3), and operating process is the same with making up a joint.

Claims

1, the pneumatic clamp of a kind of drilling well mouse hole, it belongs to the improvement of oil drilling tool.Existing several drilling well mouse holes device that makes up a joint, clamp is generally arranged, have the tooth seat pincers tooth and that eccentric and climbing roller structure are arranged, the caliper that can float, power and operating system, feature of the present utility model is the overall plan that has proposed a kind of novelty, and it has two calipers " 5,19 ", caliper " 5, a 19 " end to be connected with fixed head " 16 " by bearing pin " 8 ", and the other end is linked together two calipers " 5,19 " by cylinder " 20 ".

2,, it is characterized in that going up by clamp " 3 " that can reversing of position being housed and having the tooth seat " 11 " that clamps teeth " 4 " at caliper " 5,19 " according to the described pneumatic clamp of claim 1.

3, according to the described pneumatic clamp of claim 1, it is characterized in that below fixed head " 16 ", on the bearing pin " 8 " of plate that is connected and fixed " 16 " and caliper " 5,19 " spring " 1 " is housed.