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Multifunctional logging bridle

A multi-functional, bridle technology, used in surveying, drilling equipment, wellbore/well components, etc., can solve problems such as unfavorable protection of cables and downhole instruments, insufficient safety factor, unfavorable salvage work, etc., to reduce labor intensity, The effect of reducing maintenance and labor intensity

Active Publication Date: 2021-11-23
刘刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical effect of the present invention is: it overcomes that the existing piston type logging bridle is easy to damage the position where the logging cable is connected to the bridle during the process of lifting and lowering the cable through the winch, and the single weak point structure will cause problems during use. Accidental disconnection, it is not easy to be pulled off in time when the downhole is stuck, so that the cable is disconnected from the downhole equipment, the safety factor is not high enough, it is not conducive to the protection of the cable and downhole equipment, and it is not conducive to the smooth progress of the next salvage work

Method used

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  • Multifunctional logging bridle

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Embodiment Construction

[0008] like figure 1 As shown, it includes a salvage body 1, a piston rod 2, a balance piston 3, an intermediate joint 4 and a lower joint 5, and the upper end and the lower end of the intermediate joint 4 are respectively axially connected with the lower end of the salvage body 1 and the upper end of the lower joint 5 through threads , the piston rod 2 is axially sleeved in the salvage body 1, the balance piston 3 is located in the large-diameter cavity in the lower half of the salvage body 1, the outer wall is axially sliding and sealed with the inner wall of the salvage body 1, and the inner wall is axially sliding and sealed with the outer wall of the piston rod 2 Cooperate, the lower end of the balance piston 3 in the salvage body 1, the upper end of the intermediate joint 4, the inner wall of the salvage body 1 and the outer wall of the piston rod 2 form a closed cavity for filling silicone oil. The sealed conductive plug 1 21 on the 2 and a plurality of sealed conductiv...

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Abstract

The invention relates to a multifunctional well logging bridle, which includes a salvage body (1), a piston rod (2), a balance piston (3), an intermediate joint (4), a lower joint (5), and a tension screw sleeve (7) There are several breaking holes (72) on the side wall, a pull rod (10) is arranged above the piston rod (2), the lower end of the pull rod (10) is axially connected with the upper end of the piston rod (2) through threads, and the pull rod The lower end of (10) is equipped with a cable connection sleeve (101) located in the piston rod (2), and the centers of the pull rod (10) and the cable connection sleeve (101) are respectively provided with cable through holes. It directly connects the logging cable to the bridle, omitting the plug joint structure exposed to the outside of the bridle, which is safer and more reliable in use, can save money, reduce maintenance, and reduce labor intensity of workers. It can eliminate the hidden dangers that affect the normal release of jams, the use effect is more ideal, and it can effectively guarantee the normal operation of downhole instruments.

Description

technical field [0001] The invention relates to an auxiliary tool for logging in an oil field, in particular to a logging bridle used for logging in an oil field and connected between a logging cable and a downhole instrument for mechanical connection and signal transmission. Background technique [0002] Piston logging bridle is a new type of bridle that replaces the traditional bridle. It is filled with silicone oil as a sealing and insulating material, and the piston is used to balance the internal and external pressure, which greatly reduces the failure rate of the bridle during normal use. And improve the service life. However, the existing piston-type logging bridle uses a single weak point structure, and the bridle will accidentally disconnect when the weak point is fatigued and damaged, resulting in engineering accidents where downhole instruments fall into the well, which wastes a lot of cost for Party A and is not conducive to improving the logging The reputation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B17/02E21B31/20
CPCE21B17/023E21B31/20E21B47/00
Inventor 刘刚马宁
Owner 刘刚