Conglomerate rock permeability increase measurement system and method

Abstract

The application provides a conglomerate rock permeability increase measurement system and method. Gas is supplied by gas supply equipment to carry out a gas logging permeability increase experiment ona rock sample, and power ultrasonic excitation equipment is utilized to carry out a power ultrasonic excitation effect on the rock sample. An ultrasonic wave is transmitted to the rock sample by ultrasonic measurement equipment, and propagation duration of the ultrasonic wave is detected before and after the rock sample is subjected to the power ultrasonic excitation effect. Then, calculation iscarried out by utilizing information processing equipment to obtain gas logging permeability before and after power ultrasonic excitation and a propagation speed of the ultrasonic wave in the rock sample. Further, on the basis of the gas logging permeability of the rock sample before and after the power ultrasonic excitation effect, a permeability increase coefficient is constructed. Therefore, byobtaining the gas logging permeability of the rock sample before and after power ultrasonic excitation and the propagation speed of the ultrasonic wave and constructing the permeability increase coefficient, influence of the power ultrasonic excitation on a pore structure and flow conductivity of the rock sample can be analyzed so as to provide guidance for yield increase of a conglomerate oil reservoir.

Description

technical field [0001] The invention relates to the technical field of geological exploration rock measurement, in particular to a conglomerate rock seepage enhancement measurement system and method. Background technique [0002] In terms of increasing the production of conglomerate reservoirs, hydraulic fracturing is generally used to increase the permeability of the reservoirs, thereby increasing the production of conglomerate reservoirs. The lithology of conglomerate reservoirs is complex, and the composition of gravel and matrix differ greatly. These factors will affect the physical properties of conglomerate reservoirs, resulting in complex seepage laws in glutenite reservoirs. At the same time, the degree of cementation between the matrix and the gravel in the conglomerate is different, the size of the gravel is different, and the strength difference between the matrix part and the gravel part is obvious. These factors affect the extension process of the fracture in th...

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Problems solved by technology

The lithology of the conglomerate reservoir is complex, and the composition of the gravel and the matrix are greatly different. These factors will affect the physical properties of the conglomerate reservoir, resulting in complex seepage laws in the conglomerate reservoir.

At the same time, the degree of cementation between the matrix and the gravel in the conglomerate is different, the size of the gravel is different, and the strength difference between the matrix part and the gravel part is obvious. These factors affect the extension process of the fracture in the conglomerate reservoir. The extension of the fracturing may be blocked by gravel, and the fracture may also pass through the conglomerate. These different results will affect the hydraulic fracturing effect, resulting in poor results.

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