CN2457341Y

CN2457341Y - Releasing and recovering device for logging instrument

Info

Publication number: CN2457341Y
Application number: CN00267116U
Authority: CN
Inventors: 郭俄; 冯录华
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-12
Filing date: 2000-12-12
Publication date: 2001-10-31
Anticipated expiration: 2010-12-12

Abstract

The utility model discloses a releasing and recovering device for logging instruments, which is composed of an instrument joint, a central rod, a tension spring, a centering block, a spring joint, a push rod and a salvage cap. The lower part of the spring joint is provided with a groove which are provided with a marble and a spring, and the upper part of the spring joint is provided with an anti-drop pin. The salvage cap is sheathed on the spring joint, the middle part of the salvage cap is provided with an anti-drop groove, and the lower part of the salvage cap is provided with a taper expansion head. The utility model causes the original fixed salvage cap to become an extensible type salvage cap, which avoids resulting in generating the accidents of spring break and instrument fall to a well due to oversize pulling force and ensures construction safety.

Description

Logger discharges retracting device

The utility model relates to a kind of logger and discharges retracting device.

When instrument was transferred in oil reservoir logging, throw in catcher commonly used and expander were fixed on instrument on the tube inner wall at present, be lowered to throw in catcher again after test is finished instrument is taken out.But because instrument is chronic in the down-hole, can't make during salvaging to be stuck in that the wiper block on the expander unclamps on the tubing wall, resistance is very big when having caused instrument, even blocks bad instrument, breaks steel wire, causes the fall generation of well accident of instrument.

The purpose of this utility model is exactly the shortcoming that overcomes prior art, provides a kind of logger to discharge retracting device.

The purpose of this utility model is achieved in that logger discharges retracting device by the instrument joint, center-pole, extension spring, wiper block, spring joint, push rod, fishing bell is formed, center-pole is connected by extension spring, push rod is threaded with the center-pole upper end, the bottom of spring joint has groove, pellet shot from a slingshot and spring are housed in the groove, the top of spring joint is provided with anti-lost pin, fishing bell is enclosed within on the spring joint, the middle part of fishing bell has anti-lost groove, anti-lost pin is inserted in the anti-lost groove, the bottom of fishing bell is the tapered expansion head, have on the expansion-head with spring joint on corresponding groove, pellet shot from a slingshot can enter in the groove.

The fishing bell that the utility model will originally be fixed becomes telescopic, thereby has avoided causing owing to pulling force is excessive the generation of the accident that spring is broken, instrument falls well, has guaranteed the security reliability of construction.

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1: logger discharges the retracting device structural representation;

Among the figure: 1-instrument joint, 2-center-pole, 3-extension spring, 4-wiper block,

5-pellet shot from a slingshot, 6-spring, 7-spring joint, the anti-lost pin of 8-, the anti-lost groove of 9-,

10-fishing bell, 11-push rod;

As shown in Figure 1, logger discharges retracting device by instrument joint 1, center-pole 2, extension spring 3, wiper block 4, spring joint 7, push rod 11, fishing bell 10 is formed, center-pole 2 is connected by extension spring 3, push rod 11 is threaded with center-pole 2 upper ends, the bottom of spring joint 7 has groove, pellet shot from a slingshot 5 and spring 6 are housed in the groove, the top of spring joint 7 is provided with anti-lost pin 8, fishing bell 10 is enclosed within on the spring joint 7, the middle part of fishing bell 10 has anti-lost groove 9, and anti-lost pin 8 is in anti-lost groove 9, and the bottom of fishing bell 10 is the tapered expansion head, have on the expansion-head with spring joint on corresponding groove, pellet shot from a slingshot 5 can enter in the groove.

During use, instrument is connected on the instrument joint 1, they is fixed on the tube inner wall by throw in catcher, when after test is finished, needing to trip out instrument, be lowered to throw in catcher, make it entangle fishing bell 10, when just having begun instrument, because wiper block 4 is stuck on the tubing wall 4, resistance is bigger, but when resistance during greater than the 40-50 kilogram, pellet shot from a slingshot 5 in the expansion-head pressing spring joint on the fishing bell 10 moves on the expansion-head, makes wiper block 4 be withdrawn into minimum diameter, anti-lost pin 8 plays position-limiting action in anti-lost groove 9.Pick-up drag reduces greatly like this, at this moment just can at the uniform velocity, successfully trip out downhole instrument.

Claims

1, a kind of logger discharges retracting device by instrument joint (1), center-pole (2), extension spring (3), wiper block (4), spring joint (7), push rod (11), fishing bell (10) is formed, center-pole (2) is connected by extension spring (3), push rod (11) is threaded with center-pole (2) upper end, it is characterized in that: the bottom of spring joint (7) has groove, pellet shot from a slingshot (5) and spring (6) are housed in the groove, the top of spring joint (7) is provided with anti-lost pin (8), fishing bell (10) is enclosed within on the spring joint (7), the middle part of fishing bell (10) has anti-lost groove (9), anti-lost pin (8) is inserted in the anti-lost groove (9), the bottom of fishing bell (10) is the tapered expansion head, has on expansion-head with spring joint (3) and goes up corresponding groove.