A shale stress sensitive detection device and method
A technology of stress-sensitive and detection devices, which is applied in measuring devices, suspension and porous material analysis, instruments, etc., can solve the problems of inaccurate detection accuracy and incapable of shale stress-sensitive detection
Active Publication Date: 2022-05-13
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
However, the existing detection devices cannot fully detect the stress sensitivity of shale in all directions, resulting in inaccurate detection accuracy
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[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other. It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. The disclosure of the present invention uses "comprises" or "comprises" and other similar words to mean that the elements or objects appearing before the words include the elements or objects listed after the words and their equivalents, without excluding other elements or objects.
[0050] In the present invention, the terms "first", "second" and the like are used to distinguish similar objects, rather than to describe a specific order or sequence, unless ...
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The invention discloses a shale stress-sensitive detection device and method. The detection device includes a support platform. The left and right sides of the upper surface of the support platform are respectively provided with a left side plate and a right side plate. The top is connected to the left and right ends of the top plate; the left plate is provided with a first core clamp extending toward the right plate, and the right plate is provided with a second core clamp extending toward the left plate, the first clamp and the second The chucks of the fixture can perform reciprocating motion in the horizontal direction and circular motion in the front and rear directions; the top plate is provided with a stress loading device extending toward the support table, and the pressure head of the stress loading device can move in the horizontal direction and vertical direction. Perform reciprocating motion. The invention can change the magnitude and direction of the effective stress of rock samples, and measure the permeability of rock samples under different effective stresses, so as to comprehensively detect the stress sensitivity of shale in different directions, and enhance the detection accuracy of shale stress sensitivity.
Description
technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a shale stress sensitive detection device and method. Background technique [0002] Shale is a kind of sedimentary rock formed by dehydration and cementation of clay, mainly composed of clay minerals (kaolinite, hydromica, etc.), and has obvious thin bedding structure. When exploiting shale oil and gas, shale generally has a strong stress-sensitivity phenomenon, so it is necessary to carry out stress-sensitivity detection on shale. The stress system is in a state of triaxial stress balance before the oil and gas reservoir is developed due to the effects of lateral pressure and pore fluid pressure. In the process of oil and gas field development, the pressure drop of pore fluid in the reservoir is large near the wellbore, and the pressure drop is small far away from the wellbore, showing a funnel-shaped distribution. Inhomogeneous pore fluid pressure distri...
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IPC IPC(8): G01N15/08
CPCG01N15/0806G01N15/0826G01N15/082
Inventor 王鑫段永刚魏明强岳陶陈旭李艳谭林江王欢隆腾屹杜怡鹤
Owner SOUTHWEST PETROLEUM UNIV