Method and system for determining tight oil energy storage displacement performance

The invention discloses a method and system for determining tight oil energy storage replacement performance, and belongs to the technical field of unconventional oil and gas exploitation. The methodcomprises the steps of carrying out a wettability test on a first rock core sample in a plurality of rock core samples to obtain hydrophilic performance data of a rock core of a to-be-tested tight oilreservoir; performing a liquid absorption performance test on a second rock core sample in the plurality of rock core samples to obtain imbibition data and diffusion data of the rock core of the to-be-tested tight oil reservoir; performing an imbibition oil displacement test on a third rock core sample in the plurality of rock core samples to obtain influence data of different types of fracturingfluids on the oil displacement performance of the to-be-tested tight oil reservoir; detecting a fourth rock core sample in the plurality of rock core samples based on nuclear magnetic resonance to obtain T2 spectrum distributi