CN1866624A

CN1866624A - Cable locker for male and female connectors of horizontal well tool

Info

Publication number: CN1866624A
Application number: CN 200610046419
Authority: CN
Inventors: 王绍山
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-26
Filing date: 2006-04-26
Publication date: 2006-11-22

Abstract

The invention discloses a level well pin and box joint cable locker, which comprises the following parts: wet pin joint to connect well detecting cable, wet box joint to connect muddy pump system cable and lock hook to connect pin and box, wherein the cable pipe is set in the wet pin and box joints; the long-bar hole is opened on the pipe wall of wet box joint, whose middle part is extended into arc lock groove toward two sides; the lock groove possesses front fork part and fixing part; the front fork part is composed of two mutually paralleling elastic walls, whose front end possesses hook head in the lock groove; the fixing part of lock hook is fixed on the pipe of wet pin joint through screw; the separation angle Phi of hook head and elastic wall is 86-87 deg with inner corner of hook head possessing arc chamfering; the radius of arc is 0.3-0.6mm.

Description

Horizontal well instrument male and female adapter lead lock

(1) technical field

The present invention relates to the oil reservoir logging instrument, particularly relate to a kind of horizontal well male and female joint butt joint current supply cable lock.

(2) background technology

Oil well is divided into two kinds, and a kind of is that hole deviation is no more than the straight-through well of 20m, and the 2nd, hole deviation is greater than 80 ° even surpass 90 ° and be commonly called as horizontal well.The horizontal wellbore logging difficulty is big, needs with drilling tool to shift logging instrument onto 4000-5000m by direction of deflection and log well under the situation of naked bar well, and this task needs to finish with the horizontal well instrument.

The horizontal well instrument is a kind of special logging tool, and the test of horizontal well is had extremely special importance.The one end connects 7 core cable wet type male joint logging instruments, and its other end 7 core cable wet type female joints connect mud pump system, becomes the butt joint of male and female joint with slush pump during work, so that ground energising well logging.Because the male and female joint is to finish butt joint in temperature up to 170 ℃, under the condition of pressure at 140Mpa, therefore need a reliable cable locker, so that finish the connection of logging instrument and signal.Defectives such as there is the locking poor performance in existing cable locker because structural design is unreasonable and technological measure is improper, and useful life is short can not guarantee the reliable connection of male and female joint.

(3) summary of the invention

The objective of the invention is to overcome the deficiency of above-mentioned prior art, a kind of locking performance is good, intensity is high and provide, the horizontal well instrument male and female adapter lead lock of long service life.

The technical scheme that adopts is:

Horizontal well instrument public affairs, the female joint cable locker, comprise the wet type male joint that connects the logging instrument cable, the latch hook that connects the wet type female joint and the connection pin and box sub of mud pump system cable, in being, wet type male joint and wet type female joint establish the body of cable, and the diameter of wet type male joint is less than the diameter of wet type female joint, offer rectangular opening on the tube wall of wet type female joint, expansion has the arc locked groove to both sides at the middle part of strip opening, described latch hook has preceding fork and fixed part, preceding fork is made of two elastic walls that are parallel to each other, the front end of two elastic arms has the gib head that can be locked together in the described locked groove, the fixed part of latch hook by screw on the body of wet type male joint, it is characterized in that the angle Ф between described gib head and the elastic wall is the 86-87 degree, and the interior corner of gib head has the circular arc chamfering, and arc radius R is 0.3-0.6mm.

Main feature of the present invention:

1, architecture advances

Change the angle Φ between gib head and the elastic arm into 86-87 ° of little inclined-plane by original 90 °, to reduce pulling force and to improve wear-resisting; The interior corner of gib head has the circular arc chamfering, concentrates to reduce stress.

2, technological measure

Adopt three heat treatment, 1, normalizing, guarantee that the part bulk strength is even; 2, modified after the semifinishing, mechanism's intensity of raising part; 3, lock hook selective hardening improves hardness, wear-resisting.

Behind said structure improvement and technological measure, horizontal well male and female adapter lead lock has not only guaranteed its locking performance (lock draws and 4.2-6KN), and has improved useful life greatly.

(4) description of drawings

Fig. 1 is a structural representation of the present invention.

Fig. 2 is the enlarged drawing of latch hook of the present invention.

(5) embodiment

Horizontal well instrument public affairs, the female joint cable locker, comprise the wet type male joint 1 that connects the logging instrument cable, the latch hook 3 that connects the wet type female joint 2 and the connection pin and box sub of mud pump system cable, in being, wet type male joint 1 and wet type female joint 2 establish the body of cable, and the diameter of wet type male joint 1 is less than the diameter of wet type female joint 2, offer strip opening 4 on the tube wall of wet type female joint 1, expansion has arc locked groove 5 to both sides at the middle part of strip opening 4, latch hook 3 has preceding fork 6 and fixed part 7, preceding fork 6 is propped up wall by two elasticity that are parallel to each other and is constituted, the front end of two elasticity support arms has the gib head 8 that can be locked together in the locked groove 5, the fixed part 7 of latch hook 3 is fixed on the body of wet type male joint 1 by screw 9, its characteristics are that the angle Φ that gib head 8 and elasticity are propped up between the wall is the 86-87 degree, and the interior corner of gib head 8 has circular arc chamfering 10, and its arc radius R is 0.3-0.6mm.

Claims

1, horizontal well instrument public affairs, the female joint cable locker, comprise the wet type male joint that connects the logging instrument cable, the latch hook that connects the wet type female joint and the connection pin and box sub of mud pump system cable, in being, wet type male joint and wet type female joint establish the body of cable, and the diameter of wet type male joint is less than the diameter of wet type female joint, offer the strip opening on the tube wall of wet type female joint, expansion has the arc locked groove to both sides at the middle part of strip opening, latch hook has preceding fork and fixed part, preceding fork is propped up wall by two elasticity that are parallel to each other and is constituted, the front end of two elasticity support arms has the gib head that can be locked together in the locked groove, the fixed part of latch hook by screw on the body of wet type male joint, it is characterized in that: the angle Φ that gib head and elasticity are propped up between the wall is the 86-87 degree, and the interior corner of gib head has the circular arc chamfering, and its arc radius R is 0.3-0.6mm.