Acoustic-electro-osmosis multifunctional triaxial experiment system and acoustic-electro-osmosis multifunctional triaxial experiment method

Abstract

The invention discloses a multifunctional triaxial experiment system and method for acoustics, electroosmosis and the like. According to the multifunctional triaxial experiment system and method, rock parameter measurement of a full-diameter rock core under the triaxial covering pressure condition at different temperatures and different pressures can be simulated; parameters such as resistivity, sound wave propagation characteristics, permeability, porosity and the like of rock can be measured, and experiments such as carbon dioxide displacement of methane, air displacement of methane, water displacement of oil and the like can be carried out; the synthesis and decomposition of hydrates can be simulated; the axial pressure pump is designed in the rock parameter measurement of the full-diameter rock core, so that the requirement of simulating the field flow conductivity test is better met; the resistivity and sound wave propagation property of the rock under different gas saturation and water saturation can be measured; and the influence of the rock micro-crack on the sound wave rebroadcasting characteristic can be tested.

Description

technical field [0001] The invention relates to the field of geological energy development such as geothermal energy and oil and gas development, and in particular to a multifunctional triaxial experimental system and method such as acoustic electroosmosis. Background technique [0002] In recent years, with the rapid consumption of conventional oil and gas resources, geothermal and other geological energy sources and the increasing difficulty of their development and production, the exploration and development of unconventional oil and gas resources has become imminent. In the development of unconventional oil and gas resources, accurate determination of the basic parameters of rock samples is the most important task of oil and gas development, especially for low porosity and low permeability oil and gas reservoirs, the determination of accurate rock sample parameters can be used for subsequent formulation Mining methods provide an accurate reference. Therefore, it is extr...

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Problems solved by technology

However, there are some problems in the above-mentioned technologies: ① Most of the system testing functions are single, and can only measure one rock sample parameter, and cannot measure multiple parameters at the same time; Temperature, pressure and other conditions cannot accurately simulate and measure rock resistivity, acoustic wave propagation properties, permeability, and porosity under real formation conditions; ③The existing test methods ignore the impact of different gas saturation and water saturation on rock resistivity, acoustic wave ④ Existing test methods ignore the influence of rock micro-cracks on the sound wave propagation properties; ⑤ Existing systems focus on the development of rock sample parameter measurement systems, ignoring the displacement and other test devices based on the same equipment development

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