Importance

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Abstract

Disclosed is a method for determining a reasonable soaking time of a shale oil/gas well, implementing testing and experimentation using a device for testing a reasonable soaking time of a shale oil/gas well. The method includes: selecting a core sample; measuring and obtaining a porosity of the core sample; simulating a state of a first core sample in a reservoir; injecting methane to reach a pore pressure of the reservoir; injecting a simulated fracturing fluid into a core gripper; measuring a resistivity change curve of the first core sample; measuring and obtaining a half-life period of pressure attenuation of a first pressure sensor until an inflection point appears in the resistivity change curve of the first core sample; obtaining an experimental duration during which the first core sample and a second core sample present the shortest half-life period of pressure attenuation; obtaining a time point at which core NMR signals of the first core sample and the second core sample have the largest change amplitude; obtaining soaking time at a core scale after sorting; and obtaining the soaking time of the shale oil/gas well.

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First Claim