True triaxial experiment device and method capable of simulating radial pressure

An experimental device, radial pressure technology, applied in the direction of measuring devices, using stable tension/pressure testing material strength, instruments, etc., can solve problems such as simulation, formation pore pressure cannot be added, and formation pressure cannot be performed

Pending Publication Date: 2020-08-25
PETROCHINA CO LTD
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Problems solved by technology

[0006] Using the existing methods to study the seepage of organic shale oil often has the following problems: 1) The formation pressure simulation cannot be performed; 2) The formation ...

Method used

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  • True triaxial experiment device and method capable of simulating radial pressure
  • True triaxial experiment device and method capable of simulating radial pressure
  • True triaxial experiment device and method capable of simulating radial pressure

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Embodiment Construction

[0055] Embodiments of the present invention are further described below with reference to the accompanying drawings.

[0056] like Figure 1-Figure 13 As shown in the figure, a true three-axis experimental device that can simulate radial pressure includes a horizontally fixed chassis 1 and a geared motor. An experimental box is arranged in rotation, and a core specimen 3 is placed in the experimental box. The left and right horizontal directions of the experimental box are taken as the x direction, the front and rear horizontal directions of the experimental box are taken as the y direction, and the up and down vertical directions of the experimental box are taken as the y direction. In the z direction, the left side of the experimental box is provided with an x-direction pressure mechanism, the inner front side of the experimental box is provided with a y-direction pressure mechanism, and the bottom of the experimental box is provided with a z-direction pressure mechanism. T...

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Abstract

The invention discloses a true triaxial experiment device capable of simulating radial pressure. The device comprises a horizontal fixed chassis and a gear motor; the bottom of the horizontal fixed chassis is fixedly connected with a plurality of supporting columns arranged in a circumferential array; an experiment box body is rotationally arranged on the upper surface of the horizontal fixed chassis; a rock core test piece is placed in the experiment box body; the left-right horizontal direction of the experiment box body is taken as an x direction; the front-back horizontal direction of theexperiment box body is used as a y direction; an x-direction pressing mechanism is arranged on the left side of the interior of the experiment box body with the vertical direction of the experiment box body as the z direction; a y-direction pressing mechanism is arranged on the front side of the interior of the experiment box body; a z-direction pressing mechanism is arranged at the bottom of theexperiment box body; and the bottom of the experiment box body is in transmission connection with a main shaft of a gear motor through a belt transmission mechanism. Stress and pore pressure of a rockcore in three-axis directions can be simulated, thickened oil thermal recovery is simulated by injecting hot steam into the rock core test piece, and a complex seepage test is realized by rotating the experiment box body.

Description

technical field [0001] The invention relates to the technical field of thermal recovery of heavy oil and effective development of unconventional organic shale oil, in particular to a true triaxial experimental device and method capable of simulating radial pressure. Background technique [0002] At present, the development of shale oil technology often involves three-dimensional formation stress and pore pressure technical conditions. Considering the critical pressure gradient of shale oil flow in organic matter, organic matter supplies liquid to inorganic matter pores through diffusion, and channeling flows between inorganic matter and fractures. [0003] The differential equation of three-dimensional fluid motion in the rock formation under stress is: [0004] [0005] Through the establishment of tectonic stress field and seepage coupling equation, the fluid potential field of oil and gas migration can be numerically simulated, so as to quantitatively predict the oil a...

Claims

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Application Information

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IPC IPC(8): G01N3/18
CPCG01N3/18G01N2203/0003G01N2203/0019G01N2203/0048G01N2203/0226G01N2203/0256
Inventor 蒲秀刚韩文中汪虎张伟时战楠董雄英吴佳朋
Owner PETROCHINA CO LTD
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