Method for testing conductivity of unsupported fractures in deep shale after hydration

Abstract

The present application discloses a method for testing conductivity of unsupported fractures in deep shale after hydration. The method includes: selecting a rock sample from a target block, and dividing the rock sample into two portions; performing artificial fracturing on relative faces between the two portions to obtain fracture surfaces of the rock sample; soaking the two portions of the rock sample until a required hydration time is reached; assembling the two portions of the rock sample with a silicone gasket into a core chamber and injecting water into the rock sample; applying a horizontal closure stress to the rock sample, inducing shear slip of the rock sample under a set temperature and pressure, and measuring and collecting an injection flow rate; and calculating conductivity of the unsupported fractures after hydration based on the injection flow rate, and plotting a curve of rock sample conductivity versus flow rate.

Dependencies are inferred from the claim text.