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A kind of salvage claw and salvage cover

A technology of fishing claws and elastic claws, which is applied in the direction of wellbore/well parts, earthwork drilling and mining, etc., can solve the problems of small deformation capacity of fishing claws, detachment of fishing claws and fishing sleeves, etc., achieve low cost, increase fitting force, and structure simple effect

Active Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the deformability of the salvage claw in the prior art is small, and there is a risk of detachment of the salvage claw and the fishing sleeve

Method used

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  • A kind of salvage claw and salvage cover
  • A kind of salvage claw and salvage cover

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Experimental program
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Effect test

Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing.

[0026] figure 1 A fishing jaw 10 according to the invention is shown. Such as figure 1 As shown, the fishing claw 10 includes a fishing claw body 1 , an elastic claw body 2 and a first hook tooth 3 . Wherein, the fishing claw body 1 is a cylindrical structure, and its second end is used to connect with other tools. The elastic claw body 2 is arranged on the first end of the fishing claw body 1 and extends along the axial direction. And there are a plurality of elastic claws 2 in the circumferential direction, and the elastic claws 2 are spaced apart from each other. The first hook teeth 3 are protrudingly arranged on the outer wall of the elastic claw body 2 , and the first hook teeth 3 are circumferentially distributed in the circumferential direction.

[0027] Correspondingly, as figure 2 As shown, the fishing sleeve 50 used to cooperate with the fishing claw 10 ha...

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Abstract

The invention relates to a fishing claw and a fishing sleeve. The fishing claw includes a cylindrical fishing claw body; a plurality of elastic claw bodies separated from each other arranged on the first end of the fishing claw body and extending axially; protrudingly arranged on the elastic claw The first hook teeth on the outer wall of the body, the first hook teeth are distributed in a circumferential direction, the fishing claw is easier to insert into the fishing sleeve, and forms a larger nest with the fishing sleeve through the deformation of the elastic claw body. work together.

Description

technical field [0001] The invention relates to the technical field of oil and gas field construction, in particular to a fishing claw and a fishing sleeve. Background technique [0002] The staged fracturing technology of the ball seat fishable sliding sleeve can use packers to divide the horizontal well into several sections according to the geological conditions of the formation and the needs of reservoir development. The sliding sleeves are opened at the first stage, and the production layer is fractured in a targeted manner. After fracturing, use special fishing tools to lift or push all the inner sleeves of the ball seats of all sliding sleeves to the bottom of the well without drilling. Form a full diameter, improve construction efficiency, and increase oil production channels at the same time. [0003] The salvage claw is the key connecting part connecting the inner sleeves of the sliding sleeves at all levels. During the salvage process, the salvage claw is inserte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B31/12
CPCE21B31/12
Inventor 杨德锴李富平孔博赵晨熙尹慧博吴晋霞
Owner CHINA PETROLEUM & CHEM CORP
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