Hydraulic anchor fluke pulling-out tool

Abstract

The invention provides a hydraulic anchor fluke pulling-out tool. A square groove is arranged on the outer end face of a hydraulic anchor fluke. The tool comprises a mandrel, a slider, a jacket and a locking device, wherein the slider is connected with one end of the mandrel; the outer side of the jacket and the square groove on the fluke are installed in a matching manner; the slider is arranged inside the jacket; a track for the slider to slide is arranged in the jacket along the axial direction of the mandrel; the contact surfaces of the track with the slider incline inwards; the initial position of the slider is at the outer end of the track and corresponds to the position of the bottom surface of the square groove; and the locking device is used for limiting the relative positions of the slider and the jacket. By adopting the tool, the hydraulic anchor fluke can be easily, conveniently and quickly pulled out, time and labor are greatly saved and damage of the tool accessories is avoided.

Description

technical field [0001] The invention relates to a pulling device, in particular to a pulling tool for hydraulic anchor flukes. Background technique [0002] The hydraulic anchor is a downhole tool used to prevent the pipe string from moving up and down in the production well of the oil field. It is generally composed of a main body (oil pipe) and an anchor claw nested in it. Springs are provided at the bottom of the oil pipe and the bottom of the anchor claw. Tighten the pressure plate of the anchor fluke. When the hydraulic anchor is working, the pressure in the oil pipe is suppressed, and the anchor claws are stretched out under the action of the liquid pressure, and the inner wall of the casing is clamped to realize the anchoring action; It is retracted under the action of elastic force, and the anchoring effect is released. [0003] In the APR test tool, several hydraulic anchors are arranged on the outer wall of the RTTS packer. A square slot running through both sid...

AI Technical Summary

Problems solved by technology

This kind of pulling method is not only time-consuming and laborious, but also easy to damage the pulling tools and workpieces.

For example: It takes 3-4 hours to maintain an extended hydraulic anchor (12 anchor flukes), and damage a pair of powerful pliers. At the same time, the groove surface of the square groove at the outer end of the anchor fluke is easy to cause damage

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