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Novel pressure blocking device for underground pressurized operation

A technology of operation end and operation tools, which is applied in the direction of wellbore/well components, earthwork drilling, sealing/isolation, etc., and can solve the problems of time-consuming, wasteful, and loss of profits in the plugging process

Pending Publication Date: 2020-07-03
北京光明橡塑制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, domestic companies do not pay much attention to the pressurized operation, resulting in a large loss of profits in the later stage. The blocking function is unstable, and the processing of the blocking process takes too long, which reduces work efficiency. The research and development and expansion technology is not yet mature, causing damage to the environment and resources. and waste

Method used

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  • Novel pressure blocking device for underground pressurized operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 As shown in , the pressure blocking device is composed of six parts: 1 tension rod, 2 push rings, 3 slips, 4 cones, 5 expansion rings, 6 center tube.

Embodiment 2

[0020] Install the plugging device on the tool string, transport it to the plugging position through the tool string, apply pressure to the plugging device to fix the slips on the casing wall, and the cone squeezes the expansion ring on the central tube to make it expand to Greater than or equal to the inner wall of the casing to achieve the plugging effect.

Embodiment 3

[0022] After the maintenance work is completed, pressurize the upper part of the pressure blocking device to separate the central pipe from the pressure blocking device, realize the disassembly of the device, achieve the effect of blocking, and resume normal construction.

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PUM

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Abstract

The invention relates to a pressure blocking device for underground pressurized operation. The device is used for realizing a temporary pressure blocking effect when the pressurized maintenance operation is carried out underground, breaking a central block after workover operation is completed, and enabling a shaft to be smooth. The device is simple in structure and convenient to implement and iscomposed of six parts: an expansion ring, a central pipe, a cone, a slips, a tension rod and a push ring. The tension rod is separated from the pressure blocking device after setting of the pressure blocking device and can be brought away from a well site, the expansion ring is expanded under force to achieve a blocking effect, manufacturing materials are manufactured from soluble metal materials(or soluble non-metal materials), and can be used at high temperature and high salinity, the pressure blocking device can achieve blocking removal through self-dissolution or human intervention, blocking can be achieved in advance through pressurizing the interior of a well through human intervention, the required pressure is small, and the influence on subsequent construction is small.

Description

technical field [0001] The invention designs a novel pressure blocking device for downhole pressure operation and a preparation method thereof. Background technique [0002] At present, domestic companies do not pay much attention to the pressurized operation, resulting in a large loss of profits in the later stage. The blocking function is unstable, and the processing of the blocking process takes too long, which reduces work efficiency. The research and development and expansion technology is not yet mature, causing damage to the environment and resources. with waste. Contents of the invention [0003] The object of the present invention is to provide a method for preparing a pressure blocking device, which is characterized by simple structure, stable operation, simple operation and improved work efficiency. [0004] Its preparation method of the pressure blocking device according to the present invention comprises the following steps: [0005] Center tube: processed a...

Claims

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Application Information

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IPC IPC(8): E21B33/129E21B33/128
CPCE21B33/128E21B33/129
Inventor 席君杰王治国任国富任勇张华光赵广民庞德新艾白布魏设王凯志
Owner 北京光明橡塑制品厂
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