A rock core holder capable of measuring mechanical parameters and permeability and its measuring method

Abstract

A rock core holder capable of measuring mechanical parameters and permeability and a measurement method thereof, the rock core holder includes a holder cylinder, a hollow left end cap and a right end cap connected with the holder cylinder by threads, and a hollow left end cap The left piston is set in the hollow cavity of the holder, and a cavity is formed between the holder cylinder, the hollow left end cover, the left piston and the right end cover, and the core sample is placed in the cavity, and the right end of the core sample is placed in the groove inside the right end cover , the left end of the core sample is in contact with the left piston, and the side of the core sample is not in contact with the holder cylinder; the center of the right end cover has an experimental fluid inlet that runs through the right end cover, and the center of the core sample is also penetrating through the through hole The position of the holder is aligned with the experimental fluid inlet; the lower side of the holder cylinder is provided with an experimental fluid outlet, and the upper side is provided with an exhaust port; the invention also discloses a measurement method; the invention can realize mechanical parameters and The measurement of permeability can greatly improve the experimental efficiency for experiments that need to measure the fatigue characteristics and permeability of rock samples.

Description

technical field [0001] The invention mainly relates to a measuring device for rock core permeability and its basic mechanical parameters, in particular to a rock core holder capable of measuring mechanical parameters and permeability and a measuring method. Background technique [0002] Permeability is one of the basic properties of materials. In geological exploration and development, especially in the fields of geological exploration, research, production and development of oil and natural gas, it is necessary to take out relevant formation cores from the ground, conduct core physical property analysis experiments, and measure the permeability of relevant cores. , strength, elastic modulus and other physical parameters, to provide reference for actual development. [0003] The permeability of rock is very low, and the current experimental method for measuring low permeability is the transient pressure pulse method. The part used to place the rock to be tested in the exper...

AI Technical Summary

Problems solved by technology

The current core holder can only measure the permeability of the core or measure the permeability under a certain fixed load condition, and cannot realize the measurement of fatigue characteristics and permeability in the same device

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