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Hydraulic anchor

A technology of hydraulic anchor and anchor fluke, which is applied in the direction of wellbore/well components, earthwork drilling, etc., can solve the problems of high processing cost and single way of hydraulic anchor hole layout, etc., to reduce processing cost, increase anchoring force, improve The effect of stability

Inactive Publication Date: 2012-07-25
乐清市乐吉石油机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] What the present invention aims to solve is the problem of high processing cost caused by the large number of existing hydraulic anchoring holes and the single way of hydraulic anchoring holes. hydraulic anchor required

Method used

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Examples

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Embodiment Construction

[0031] In the following, the present invention will be further described by using the following embodiments in conjunction with the accompanying drawings.

[0032] The structure of the nine-hole hydraulic anchor in one embodiment of the present invention is as follows: figure 1 As shown, it includes an anchor body 1 and an anchor fluke. The outer surface of the anchor body 1 is provided with nine fluke holes 2, and the nine fluke holes 2 are distributed on the anchor body 1 in six rows and three rows. , wherein two fluke holes 2 are evenly distributed in each row on odd-numbered rows, and one fluke hole 2 is distributed in the middle of each row on even-numbered rows.

[0033]An anchor tooth 6 is provided on the anchor fluke, and the anchor tooth 6 includes an anchor tooth body and the outer surface of the anchor tooth body is covered with a nickel-phosphorus wear-resistant layer with a thickness of 20-40um. The thickness of the nickel-phosphorus wear-resistant layer can be c...

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PUM

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Abstract

The invention discloses a hydraulic anchor, which comprises an anchor body and an anchor fluke with anchor teeth. Ten or twelve anchor fluke holes are arranged on the outer surface of the anchor body and in nonuniform distribution on the outer surface of the anchor body. Each anchor tooth comprises an anchor tooth body and an abrasion-resistant layer covering the outer surface of the anchor tooth body. The hydraulic anchor has the advantages that the hole distribution mode requires shorter anchor body on the premises of fixed internal and external diameters of the anchor body and fixed diameter of the anchor holes, so that raw materials are saved during production; or the diameter of the anchor fluke is increased, the contact area of the anchor fluke with the inner wall of an oil pipe is widened, and accordingly anchoring force is increased and stability is improved. With the oil pipe fixed and prevented from retracting, the less the anchor fluke quantity is, the simpler the procedures are in production and the shorter the production period is, and thereby processing cost can be reduced.

Description

technical field [0001] The invention relates to a hydraulic anchor, which belongs to the downhole anchoring tool used for fixing pipe strings in oil and gas production wells of oil and gas fields. Background technique [0002] The hydraulic anchor is a downhole anchoring tool for fixed pipe strings used in oil and gas production wells in oil and gas fields. When the oil well is pumping, the load of the fluid column on the tubing and the sucker rod is transferred alternately with the up and down strokes of the pumping unit, which makes the tubing stretch and shorten, and is prone to problems such as low efficiency of the pump and tripping of the tubing. In order to solve the above problems, the hydraulic anchor is used to fix the oil pipe, which can prevent the oil pipe from expanding and contracting, thereby improving the working efficiency of the oil well pump and avoiding the tripping of the oil pipe. [0003] Both ends of the hydraulic anchor body are provided with a fir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B23/01
Inventor 倪化龙
Owner 乐清市乐吉石油机械厂
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