Pressing cap type non-metallic hydraulic anchor

A non-metallic, hydraulic anchor technology, used in wellbore/well components, earthwork drilling, etc., can solve problems such as poor anchoring effect, waste of materials, and failure to achieve the expected effect, so as to improve the anchoring effect, Material saving and easy processing

Pending Publication Date: 2018-06-15
盐城市鑫源石化机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cone anchor tile non-metallic hydraulic anchors have the disadvantage that the contact surface of the anchor claws is too large, resulting in a poor anchoring effect; pressure plate anchor tile non-metallic hydraulic anchors only use pressure plates to press the screws for each set of anchor tiles 3-4 Tightening requires high neutrality, but often fails to achieve the desired effect, and this structure wastes materials

Method used

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  • Pressing cap type non-metallic hydraulic anchor
  • Pressing cap type non-metallic hydraulic anchor
  • Pressing cap type non-metallic hydraulic anchor

Examples

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Embodiment

[0019] Such as Figure 1-3 Shown is the structural representation of the pressure cap type non-metallic hydraulic anchor of the present invention. The cap-type non-metallic hydraulic anchor includes an anchor body 1 , a fluke hole 11 , a non-metal fluke 3 , a cap 2 , a spring 4 , a sealing ring 5 , a sand control pipe 6 , and a cap 7 . On the anchor body 1, there are 21 anchor fluke holes 11 distributed radially and evenly. A non-metal fluke 3 is arranged in each fluke hole 11 . A sealing ring 5 is embedded in the outer circular sealing groove of each non-metallic fluke 3 . A spring 4 is provided at the step of each non-metallic fluke 3, on which a pressing cap 2 is installed. A sand control pipe 6 is arranged inside the anchor body 1, and the end is fastened with a cap 7. A sand control structure is set inside the anchor body 1 to prevent the sand particles in the well from entering the anchor fluke hole 11, thereby affecting the recovery of the anchor fluke 3, and prolon...

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Abstract

The invention discloses a pressing cap type non-metallic hydraulic anchor. The anchor comprises an anchor body, pressing caps, non-metallic anchor claws, springs and sealing rings; a plurality of anchor claw holes are formed in the anchor body; the non-metallic anchor claws are arranged in each anchor claw hole; the sealing rings are embedded in outer circumferential sealing grooves of each non-metallic anchor claw; the springs are arranged at step positions of each non-metallic anchor claw, and the pressing caps are arranged on the springs. According to the anchor, a pressing cap structure isadopted by the non-metallic anchor claw, twenty-one anchor claws are arranged on each hydraulic anchor, the anchor claws are crossedly and uniformly distributed in the radial direction, multi-point equispaced contact with sleeve tubes can be achieved, and strong friction resistance is generated to enhance anchoring force and improve the anchoring effect; compared with existing pressing plate typenon-metallic hydraulic anchors, materials are saved and processing is convenient.

Description

technical field [0001] The invention relates to the technical field of oil exploitation, in particular to a pressure cap type non-metallic hydraulic anchor. Background technique [0002] In oil exploration operations, hydraulic anchors are usually used in conjunction with packers for oil testing, oil production, acidizing, fracturing, etc., to fix downhole tubing strings and prevent packer failure caused by string creep. The conventional hydraulic anchor is a metal fluke, but the metal fluke often damages the inner wall of the casing when anchoring the pipe string, and there will also be stuck accidents during drilling, so people have developed a non-metallic hydraulic anchor. The non-metallic hydraulic anchor can not only meet the anchoring requirements of the pipe string, but also not damage the casing, which can effectively prolong the service life of the casing. Existing non-metallic hydraulic anchors have two types: cone anchor tile type and pressure plate anchor tile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B23/01
CPCE21B23/01
Inventor 董乔云顾明祥
Owner 盐城市鑫源石化机械有限公司
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