Hydraulic anchor for sand fracturing operation of oil and gas well

By introducing the design of sliding plate, rubber isolation sleeve and linkage block into the hydraulic anchor, water pressure is used for anchoring and unanchoring, which solves the problem of insufficient elasticity of existing hydraulic anchors and improves the stability and stability of anchoring. The efficiency of sand fracturing operations.

CN113216885AInactive Publication Date: 2021-08-06李冬冬
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
李冬冬
Filing Date
2021-06-08
Publication Date
2021-08-06
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When the existing hydraulic anchor is in use, it relies on the elastic force of the spring to reset the anchor tiles, which easily affects the efficiency of sand cracking operations due to insufficient elastic force. In addition, the need to maintain sufficient water pressure results in poor anchoring stability, which affects subsequent construction. .

Method used

A structure including the main pipe of the hydraulic anchor, anchor tiles, sliding plates, rubber isolation sleeves, positioning pipes and linkage blocks is designed. Anchorage is performed through high-speed water injection, anchoring is canceled by slow water injection, and water pressure is used for anchoring. and release the anchor, avoiding the problem of insufficient spring elasticity, and improving the stability of the anchor through the blocking mechanism and sealing block.

Benefits of technology

It improves the stability and efficiency of anchoring, avoids the problems of anchor tiles getting stuck and water pressure affecting anchoring pressure, and improves the effect of sand and fracturing operations.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to the field of oil well construction equipment, and discloses a hydraulic anchor for sand adding fracturing operation of an oil and gas well, the hydraulic anchor comprises a hydraulic anchor main body pipe and an anchor tile, the hydraulic anchor main body pipe is provided with a slip groove, the hydraulic anchor main body pipe is fixedly sleeved with a limiting batten located on the outer side of the slip groove, the slip groove is internally and movably sleeved with a sliding plate, and the sliding plate is connected with the anchor tile. The anchor tiles are fixedly connected to the two ends of the outer side of the sliding plate, and a rubber packing sleeve located between the two anchor tiles is arranged between the limiting batten and the sliding plate. Through the structural design of a sliding plate linked with an anchor tile in a slip groove, a rubber packing sleeve, a positioning through pipe, a matched linkage block and a middle sleeve, anchoring and canceling are conducted through water pressure, and compared with an existing hydraulic anchor, anchoring and canceling are conducted through water pressure, so that power is sufficient, the situation that when the anchoring is canceled through the elastic force of a spring is avoided, and the anchoring efficiency is improved. Due to the fact that limited elastic force of the spring is not enough for unfreezing, the sand-adding fracturing operation efficiency is affected.
Need to check novelty before this filing date? Find Prior Art