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Rotatable adaptive compensator of coiled tubing test string

A technology of self-adaptive compensation and test tube, applied in measurement, drilling tube, casing and other directions, can solve the problem of cable overstretching and damage, and achieve the effect of preventing strand break and protecting the cable.

Inactive Publication Date: 2013-10-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no coiled tubing test string rotatable adaptive compensator for coiled tubing testing in China. If the compensator is not used in the test operation, the cable will be over-pulled and damaged

Method used

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  • Rotatable adaptive compensator of coiled tubing test string
  • Rotatable adaptive compensator of coiled tubing test string
  • Rotatable adaptive compensator of coiled tubing test string

Examples

Experimental program
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Embodiment Construction

[0020] Further explanation is made below with reference to accompanying drawing:

[0021] according to figure 1 As shown, the coiled tubing test string can rotate the self-adaptive compensator, the coiled tubing slip 2 is sleeved on the locking mandrel 1 from the bottom, the lower part is threaded with the slip locking sleeve 4, and the anti-loosening shear nail 3 fixed, the compensation sleeve 5 is threadedly connected to the lower end of the locking mandrel 1, and fixed with anti-loosening shear nails, the compensation mandrel 6 is inserted into the compensation sleeve 5, and contacts the locking mandrel 1, and the compensation The joint 7 is inserted into the annular space between the compensating mandrel 6 and the compensating sleeve 5, and is threadedly connected with the compensating sleeve 5, and fixed with anti-loosening shear nails, and the cable locking sleeve 9 is threaded with the compensating mandrel 6, and used The anti-loosening shear pin is fixed, the one-way ...

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Abstract

The invention discloses a rotatable adaptive compensator of a coiled tubing test string, which comprises a locking mandrel, a compensation mandrel, a cable locking slip element and a variable buckle connector, wherein the locking mandrel is connected with the compensation mandrel by a compensation sleeve; the compensation mandrel is connected with the cable locking slip element by a cable locking sleeve; the cable locking slip element is connected with the variable buckle connector by a halter; the outer side of the locking mandrel is sleeved with a coiled tubing slip element; the lower half part of the coiled tubing slip element is sleeved with a slip element locking sleeve; a cable locking copper core is arranged in the halter; and a cable locking copper pad is placed between the cable locking copper core and the variable buckle connector. According to the compensator, a cable is fixed with the compensator by the cable locking slip element, and a bearing is used to assist the compensator in performing autorotation along with the cable, so that the cable is prevented from being divided into strands, and a purpose of protecting the cable is achieved by compensating a difference between elongations of a coiled tubing and the cable through a self-compensation structure.

Description

technical field [0001] The invention relates to downhole operation tools for oil, gas and water wells, in particular to a rotatable self-adaptive compensator for a coiled tubing test string. Background technique [0002] Coiled tubing operation equipment is a kind of special operation equipment in oilfields. It has the title of "universal operation equipment". Break off. At present, there is no coiled tubing test string rotatable adaptive compensator for coiled tubing testing in China. If the compensator is not used in the test operation, the cable will be over-pulled and damaged. [0003] In view of this, in view of the above problems, a coiled tubing test string rotatable adaptive compensator with reasonable design and effective improvement of the above deficiencies is proposed. Contents of the invention [0004] The purpose of the present invention is to provide a coiled tubing test string rotatable self-adaptive compensator, which can be compatible with various loggi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B17/00E21B19/00
Inventor 车传睿李德忠王志伟顾国利安申法李小军
Owner CHINA PETROLEUM & CHEM CORP
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