CN201554384U

CN201554384U - Universal joint of drill stem

Info

Publication number: CN201554384U
Application number: CN2009202876255U
Authority: CN
Inventors: 倪荣发; 张景利; 张增民; 孙辉; 刘海龙; 杜丽东; 崔玉良; 张良
Original assignee: Liaohe Petroleum Exploration Bureau
Current assignee: Liaohe Petroleum Exploration Bureau
Priority date: 2009-12-11
Filing date: 2009-12-11
Publication date: 2010-08-18
Anticipated expiration: 2019-12-11

Abstract

The utility model discloses a universal joint of a drill stem for a horizontal well completion in an oil field, which comprises an upper joint, an outer tube, an upper ball seat, a fastening pin, a fastening nut, a ball arm, a torque transmission hinge pin, a spring collar, a lower ball seat, an anti-sand packing cup, a pressing plate, a lower joint, a pressing screw, a sunk screw, a sealing rubber ring and an upper ball seat sealing rubber ring, wherein the upper joint is connected with the outer tube by threads; the upper ball seat is arranged in the outer tube and fixed by the fastening pin; the sealing rubber ring is sheathed on the upper ball seat; the upper ball seat and the fastening nut are fixed by the fastening pin; the upper ball seat sealing rubber ring is sheathed on the ball arm and connected with the torque transmission hinge pin by threads; the ball arm is inserted into the lower ball seat, and then the lower ball seat is inserted into the outer tube and fixed by the torque transmission hinge pin; the sunk screw is connected with the spring collar by threads; an elastic collar blocks the torque transmission hinge pin; the anti-sand packing cup is sheathed on the lower joint; the pressing plate is pressed on the anti-sand packing cup and fixed by the pressing screw; and the lower joint is connected with the ball arm by threads. The universal joint solves the problem that in the prior art, tools are easily clamped at inflection points and can not enter smoothly. The universal joint is applicable to completion of horizontal wells.

Description

The drilling rod universal joint

Technical field:

The utility model relates to a kind of oil field oil, the well horizontal well bores the drilling rod universal joint that completion is used.

Background technology:

The problem that present oilfield horizontal well often runs into when drilling well, workover treatment is that drilling tool turning difficulty through flex point the time is big, influences production operation.When current tool carries out the rigidity turning through flex point, common tube column joint commonly used, spherical ball joint, frequent bit freezing enters not smooth in operation process.The universal tool joint of our development, the joint lower end, flexible, stretch, can bear loads such as drawing, press, turn round, it is very flexible to turn.

The utility model content:

The purpose of this utility model provides a kind of drilling rod universal joint, it solved the instrument that exists in the prior art through flex point carry out rigidity when turning drill bit easily block, enter not smooth problem.

The technical scheme that its technical problem that solves the utility model adopts is: the drilling rod universal joint, form by top connection, urceolus, upper ball base, pin for suppressing metal, clamp nut, club, torsion pass bearing pin, check ring, lower ball base, Sand-proof leather cup, pressing plate, lower contact, housing pin, countersunk head screw, O-ring seal, upper ball base O-ring seal; Top connection is threaded with urceolus, upper ball base is contained in the urceolus and fixes with pin for suppressing metal, O-ring seal is enclosed within on the ball seat, upper ball base and clamp nut are fixed with pin for suppressing metal, the upper ball base O-ring seal is enclosed within on the club is threaded with the torsion pass bearing pin, club inserted lower ball base to be inserted in the urceolus in the lower ball base again fix with the torsion pass bearing pin, countersunk head screw is threaded with check ring, block the torsion pass bearing pin with circlip, Sand-proof leather cup is enclosed within the lower contact, pressing plate is pressed and is fixed with housing pin thereon, and lower contact is threaded with club.

The beneficial effects of the utility model are; Relatively simple for structure, result of use is good; The drilling rod universal joint is connected on the drilling rod lower end, is used for horizontal well probing or workover treatment, flexible, stretch, can bear loads such as drawing, press, turn round, it is very flexible to turn.

Description of drawings:

Accompanying drawing is the utility model overall structure schematic diagram.

Among the figure 1, top connection, 2, urceolus, 3, upper ball base, 4, pin for suppressing metal, 5, clamp nut, 6, club, 7, torsion pass bearing pin, 8, check ring, 9, lower ball base, 10, Sand-proof leather cup, 11, pressing plate, 12, lower contact, 13, housing pin, 14, countersunk head screw, 15, O-ring seal, 16, the upper ball base O-ring seal.

The specific embodiment:

In the accompanying drawings, the drilling rod universal joint is made up of top connection 1, urceolus 2, upper ball base 3, pin for suppressing metal 4, clamp nut 5, club 6, torsion pass bearing pin 7, check ring 8, lower ball base 9, Sand-proof leather cup 10, pressing plate 11, lower contact 12, housing pin 13, countersunk head screw 14, O-ring seal 15, upper ball base O-ring seal 16; Top connection 1 is threaded with urceolus 2, upper ball base 3 is contained in the urceolus 2 fixing with pin for suppressing metal 4, O-ring seal 15 is enclosed within on the ball seat 3, upper ball base 3 is fixing with clamp nut 5 usefulness pins for suppressing metal 4, upper ball base O-ring seal 16 is enclosed within on the club 6 is threaded, will club 6 insert in the lower ball bases 9 and insert in the urceolus 2 lower ball base 9 fixing again with torsion pass bearing pin 7 with torsion pass bearing pin 7; Countersunk head screw is threaded with check ring 8, blocks torsion pass bearing pin 7 with circlip 8, and Sand-proof leather cup 10 is enclosed within the lower contact 12, and pressing plate 11 is pressed fixing with housing pin 13 thereon, and lower contact 12 is threaded with club 6.

Claims

1. drilling rod universal joint, by top connection (1), urceolus (2), upper ball base (3), pin for suppressing metal (4), clamp nut (5), club (6), torsion pass bearing pin (7), check ring (8), lower ball base (9), Sand-proof leather cup (10), pressing plate (11), lower contact (12), housing pin (13), countersunk head screw (14), O-ring seal (15), upper ball base O-ring seal (16) is formed, it is characterized in that: top connection (1) is threaded with urceolus (2), upper ball base (3) is contained in the urceolus (2) fixing with pin for suppressing metal (4), O-ring seal (15) is enclosed within on the upper ball base (3), upper ball base (3) is fixing with pin for suppressing metal (4) with clamp nut (5), upper ball base O-ring seal (16) is enclosed within club (6) upward is threaded, will will fix with torsion pass bearing pin (7) in lower ball base (9) the insertion urceolus (2) again in club (6) the insertion lower ball base (9) with torsion pass bearing pin (7); Countersunk head screw is threaded with check ring (8), block torsion pass bearing pin (7) with circlip (8), Sand-proof leather cup (10) is enclosed within the lower contact (12), and pressing plate (11) is pressed and used housing pin (13) fixing thereon, and lower contact (12) is threaded with club (6).