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Hydraulic anchor for sand fracturing operation of oil and gas well

A technology of hydraulic anchoring and oil and gas wells, which is applied in the direction of wellbore/well components, earthwork drilling, sealing/isolation, etc.

Inactive Publication Date: 2021-08-06
李冬冬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a hydraulic anchor used for sanding and fracturing operations in oil and gas wells, which has the advantages of stable anchor release and high anchor stability, and solves the technical problems mentioned in the background technology

Method used

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  • Hydraulic anchor for sand fracturing operation of oil and gas well
  • Hydraulic anchor for sand fracturing operation of oil and gas well
  • Hydraulic anchor for sand fracturing operation of oil and gas well

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] see Figure 1-4 , a hydraulic anchor used for sanding and fracturing operations in oil and gas wells, comprising a hydraulic anchor main pipe 1, four slip grooves 101 are opened on the top and bottom of the outer side of the hydraulic anchor main pipe 1, and the hydraulic anchor main pipe 1 is The four slip grooves 101 at the two locations are all symmetrical to the axis of the main body pipe 1 of the hydraulic anchor. In the middle part ...

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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.

Description

technical field [0001] The invention relates to the field of oil well construction equipment, in particular to a hydraulic anchor used for sanding and fracturing operations of oil and gas wells. Background technique [0002] The hydraulic anchor is an important tool used for sanding and fracturing operations in oil and gas wells. It plays the role of fixing the pipe string and avoiding the axial displacement of downhole tools. Under the action of force, the anchor tiles protrude outward, so that the anchor tiles are embedded in the casing wall, and the tool is restricted from moving up and down, so as to realize the anchoring of the pipe string. The elastic force of the inner spring between the plate and the anchor tile resets and releases the anchor. [0003] However, when the existing hydraulic anchor is in use, because the elastic force of the spring is used to reset the anchor shoe to release the anchor, the limited elastic force of the spring is not enough to release t...

Claims

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Application Information

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IPC IPC(8): E21B23/01E21B33/1295E21B33/126
CPCE21B23/01E21B33/126E21B33/1295
Inventor 李冬冬
Owner 李冬冬
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