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A performance test method and device for a downhole packer

A test method and packer technology, applied in measuring devices, testing of machine/structural components, instruments, etc., can solve problems such as the gap between packers and achieve the effect of strengthening the load

Active Publication Date: 2020-02-18
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above research work is aimed at the research on the working mechanics and other performances of conventional packers, and is related to oilfield, geothermal, CO 2 There is still a certain gap between the work performance of downhole equipment and the work performance of packers used in the complex environment of deep engineering such as geological storage.
There is no domestic institution targeting CO 2 A device for testing the working performance of packers and other downhole equipment in the multiphase fluid environment encountered in geological storage and other processes; to fill this gap and realize the comprehensive performance testing and optimization of packers working in specific environments Structural design, research and development of better CO 2 For special downhole packers used in geological storage and other special fields, it is necessary to develop a special downhole packer and downhole equipment performance test and test device and method

Method used

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  • A performance test method and device for a downhole packer
  • A performance test method and device for a downhole packer
  • A performance test method and device for a downhole packer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A downhole packer performance test method, the steps are:

[0042] 1. Install the rubber cylinder stress detection device at the position of the packer rubber cylinder; the packer is connected to the packer plug, the upper part is connected to the central pipe joint, and then lowered into the experimental container; the upper and lower parts of the experimental container are respectively connected to the upper joint of the container and the container The lower joint; the pressure hole of the central tube of the container is connected to the brine mixture and CO 2 The interface line of the packer center pipe in the pressurization system; the pressure hole in the lower part of the vessel is connected to the brine mixture and 2 The lower annulus interface pipeline in the pressurized system; the pressure hole in the upper annulus of the container is connected to the brine mixture and CO 2 The upper annular space interface pipeline in the pressurized system; connect the cir...

Embodiment 2

[0054] A downhole equipment performance test device is composed of a brine mixed liquid and CO2 pressurization system 1, an experimental container system 2, a circulation heating system 3, a low-pressure driving air system 4, a computer automatic control system, and 5 an experiment process monitoring system. The connection relationship is: in the brine mixture and CO2 pressurization system 1, the packer central tube pressurization pneumatic control valve 1-7, the lower annular space pressurization pneumatic control valve 1-14 are respectively connected with the experimental container system 2 The experimental container 2-3 is connected, the packer central pipe pressure relief pneumatic control valve 1-27 in the brine mixed liquid and CO2 pressurization system 1 is connected with the ball valve 4-6 in the low-pressure driving air system 4, and the experimental container system 2 The experimental container 2-3 in the circulatory heating system 3 is respectively connected with the...

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Abstract

The invention discloses a performance test method and device for special down-hole packer. The method comprises the steps of A, starting a low-pressure air-driven air system; B, starting a computer automatic control system; C, starting the computer automatic control system; D, starting an experimental process monitoring system; E, starting a brine mixed liquor and CO2 pressurization system; F, setting the packer; G, keeping the pressure and temperature in an experimental container system to be constant, and collecting data such as temperature, pressure and stress in the experiment process; andK, pulling out the packer. All pipelines are connected to clean water so as to flush all pump valve components. The device consists of the brine mixed liquor and CO2 pressurization system, the experimental vessel system, a circulating heating system, the low-pressure driven air system, the computer automatic control system and the experimental process monitoring system. The method is easy, simpleand convenient to operate, and is used for testing the long-term operation reliability of the down-hole equipment in a special geological environment with CO2 geosequestration.

Description

technical field [0001] The invention belongs to CO 2 The field of geological storage technology, more specifically relates to a special downhole packer performance test method used in CO2 geological storage, and also relates to a downhole packer performance test device, which is used for downhole equipment in special geological environments for CO2 geological storage Long-term reliability testing. Background technique [0002] With domestic CO 2 Advances in Geological Storage Research, CO 2 In the process of geological storage, CO2 injection wells and risk monitoring wells need to be sealed with downhole packers, and the CO2 stored in the formation 2 The mixture formed with groundwater, etc. has strong corrosiveness, coupled with the high temperature environment and CO in deep formations 2 If there is no leakage after geological storage, the packer is required to be simple in structure and flexible in use, and it is also required to be able to withstand high temperature ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 魏宁李小春胡元武刘胜男
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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