Rock performance evaluation device

A technology for evaluating device and performance, applied in the direction of using stable tension/pressure to test the strength of materials, etc., can solve problems such as difficulty in rock strain measurement
CN103868801BActive Publication Date: 2016-04-06PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2016-04-06

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Abstract

The embodiment of the invention provides a rock performance evaluating device. The device comprises a pressure chamber and a CT (computed tomography) device, wherein the pressure chamber is a sealed cavity body, is positioned in the scanning range of an X-ray computerized tomography CT device, and is used for providing preset testing temperature and preset testing pressure for a rock core test specimen, wherein the preset testing temperature is higher than a first threshold, and the preset testing pressure is higher than a second threshold; the CT device is used for scanning the rock core test specimen to acquire image information of the internal structure of the rock core test specimen at different time, and analyzing according to the image information so as to obtain a strain curve of the rock core test specimen. The embodiment of the invention prevents the situation that the rock strain is measured by a sensor at high temperature, thereby measuring the rock strain simply and accurately at high temperature.
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Description

technical field

[0001] The invention relates to the technical field of oil and gas exploitation, in particular to an evaluation device for rock properties. Background technique

[0002] Understanding the performance of underground rocks under different conditions, such as thermophysical properties, rock mechanics, hydraulics, etc., is of great significance for guiding drilling, well layout, and designing development strategies for oil and gas production.

[0003] The traditional in-situ stress sensitivity test mainly focuses on the mechanical properties of the rock at formation temperature (<150 degrees), and the stress-strain curve, elastic modulus, Poisson's ratio, fracture angle, and slip friction coefficient are obtained through classic triaxial compression experiments , cohesion, internal friction angle and other parameters.

[0004] With the increasing importance of unconventional oil and gas resources, research and development of new technologies for resources tha...

Claims

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