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Comprehensive test platform for dynamic sealing performance of gas storage cover rock

A comprehensive testing and dynamic sealing technology, which is applied in the directions of using liquid/vacuum to measure liquid tightness, applying repeated force/pulsation force to test material strength, and applying stable tension/pressure to test material strength, etc., can solve the lack of and other problems, to achieve the effect of reducing the occupied space and making the test convenient and quick

Pending Publication Date: 2021-12-14
NORTHEAST GASOLINEEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this comprehensive test platform is still lacking in the prior art

Method used

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  • Comprehensive test platform for dynamic sealing performance of gas storage cover rock
  • Comprehensive test platform for dynamic sealing performance of gas storage cover rock
  • Comprehensive test platform for dynamic sealing performance of gas storage cover rock

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] refer to figure 1 and figure 2 , a comprehensive testing platform for the dynamic tightness of rocks in the caprock of a gas storage, the comprehensive testing platform consists of a three-axis alternating mechanical control system, a temperature loading system, a gas pressurization system, a core saturation loading system, a seepage outlet monitoring system, The acoustic detection system and data acquisition and display system are connected through high-pressure connecting pipelines, valves and circuit systems.

[0023] The three-axis alternating mechanical control system consists of a three-axis rigid reaction frame 5, a self-balancing pressure chamber 6, a pressure chamber opening and closing cylinder 1, a pressure chamber annular hatch 36, an axial enclosure control system 7, and an axial pressure loading cylinder 11. Displacement sensor 12, axial load force sensor 8, confining pressure fluid storage tank 19, liquid filling pump 20, confining pressure loading pump...

Embodiment 2

[0037] Such as figure 1 As shown, the test method of the comprehensive test platform for the dynamic tightness of the gas storage cap rock is:

[0038] (1) Wrap the sample with an oil-proof heat-shrinkable tube 9, load the axial strain sensor 3, the radial strain sensor 4 and the acoustic emission probe 10, put it into the self-balancing pressure chamber 6 and insert the data leads into the multi-channel data The collection interface 37; through the axial surrounding control system 7, the axial loading cylinder 11 and the axial force sensor 8, a small axial load is applied to the sample to fix the sample;

[0039] (2) Close the annular hatch 36 of the pressure chamber through the opening and closing oil cylinder 1 of the pressure chamber, and insert the safety pin 35 of the pressure chamber, and pass the axial enclosure control system 7, the confining pressure fluid storage tank 19, the liquid filling pump 20, the enclosure Pressure loading pump 21 and pressure sensor 22 carr...

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Abstract

The invention relates to the technical field of geological engineering, in particular to a comprehensive test platform for dynamic sealing performance of gas storage cover rock. The comprehensive test platform is formed by connecting a triaxial alternating mechanical control system, a temperature loading system, a gas pressurization system, a rock core saturation loading system, a seepage outlet monitoring system, an acoustic detection system and a data acquisition and display system through a high-pressure connecting pipeline, a valve and a circuit system. On one hand, the platform is provided with a temperature and confining pressure loading system and a vacuumizing and saturation system, temperature, confining pressure and formation water simulation under the formation condition can be achieved, and on the other hand, stress alternation during gas storage injection-production alternation can be simulated by adopting a stress control technology; on the other hand, an advanced flowmeter or an optical fiber type sensor can be adopted to collect permeability or breakthrough pressure data in real time.

Description

technical field [0001] The invention relates to the technical field of geological engineering, and in particular relates to a comprehensive testing platform for the dynamic sealing performance of gas storage cap rocks. Background technique [0002] Underground gas storage is a key link in the natural gas industry chain and an important part of the pipeline transportation system. The construction conditions of underground gas storage are harsh. The gas storage has the characteristics of large flow, strong injection, strong production, and high-intensity service. The safety of long-term operation is particularly important. Therefore, it is required that the caprock has good dynamic sealing under long-term alternating loads performance. Under the action of long-term alternating loads, the defects such as pores and fissures in the caprock of the gas storage have undergone significant and complex changes in their rock mechanical properties and capillary sealing capacity. At pre...

Claims

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Application Information

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IPC IPC(8): G01M3/24G01M3/26G01N3/12G01N3/36G01N15/08
CPCG01M3/24G01M3/26G01N15/0826G01N3/12G01N3/36G01N2203/0003G01N2203/001G01N2203/0019G01N2203/0048G01N2203/0067G01N2203/0075G01N2203/0222G01N2203/0234G01N2203/023G01N2203/0236G01N2203/0246G01N2203/0256G01N2203/0676G01N2203/0682
Inventor 贾善坡温曹轩付晓飞孟令东仲国生张国一陈振龙常永松
Owner NORTHEAST GASOLINEEUM UNIV
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