公开(公告)号：US20220290561A1

公开(公告)日：2022-09-15

申请号：US17394071

申请日：2021-08-04

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Ping GUO ,  Zhouhua WANG ,  Yijian CHEN ,  Bowen SUN ,  Chao DONG ,  Yisheng HU ,  Shuoshi WANG

IPC: E21B49/08 ,  E21B49/00 ,  G01N30/02 ,  G01N33/28 ,  G01N33/24

Abstract: The invention relates to a device for testing the three-phase saturation of oil, gas and water in a high-temperature and high-pressure planar model, comprising a displacement pump 1, a confining pressure pump 2, a back pressure pump 3, containers, a planar model system 21, a data acquisition system 22, a back pressure valve 23 and an oil-gas separator 24. The planar model system includes a planar model 27, an autoclave body 31, a heating temperature-controlling system 34, a Y-axis direction stepping motor 35, a X-axis direction stepping motor 36 and an acoustoelectric detector 41. A method for testing the three-phase saturation of oil, gas and water by using the device includes: calibrating three-phase saturation of oil, gas and water to a rock core, preparing a formation water sample and a crude sample, regaining the original formation conditions of the planar model, simulating the depletion or displacement process of oil reservoirs, performing linear ultrasonic-and-resistivity-scanning test on planar model, determining the three-phase saturation distribution of oil, gas and water in the planar model. The invention has simple operation and intuitive measurement, and provides tools and means for testing the three-phase saturation of oil, gas and water during the depletion or displacement development of oil-gas reservoirs.