Dynamic physical simulation experiment method for water invasion of fractured gas reservoir with bottom water and device thereof

Abstract

The invention discloses a dynamic physical simulation experiment method for water invasion of a fractured gas reservoir with bottom water and a device thereof; the device comprises a rock core holder including a holder cylinder, a rubber sleeve, an accommodating chamber, and annular confining pressure space; a fractured rock sample is disposed in the accommodating chamber; a high-pressure injection pump is communicated with the confining pressure space of the rock core holder through a first hollow pipe, and a first switch valve is disposed on the first hollow pipe; a gas feeding container and a water feeding container which are arranged in parallel are connected with an inlet end of the rock core holder; a second switch valve is disposed between the gas feeding container and a second hollow pipe; a third switch valve is disposed between the water feeding container and a second hollow pipe; a gas-water separator and a gas flowmeter are arranged in series; the gas-water separator is connected with an outlet end of the rock core holder; a fourth switch valve is disposed on a third hollow pipe. The invention can realize dynamic simulation research for water invasion of fractured gas reservoir with bottom water in a laboratory, and has the advantages of accurate test data, simple device, and easy operation.

Description

technical field [0001] The invention relates to an oil-gas field development core experiment analysis technology, in particular to an experiment method and a device capable of simulating and studying the water invasion dynamics of fractured bottom water gas reservoirs. Background technique [0002] In the field of oil and gas field development, most gas reservoirs have edge and bottom water, and water invasion often occurs during the development of gas reservoirs, especially in fractured gas reservoirs, where edge and bottom water can easily enter the well bottom along fractures, and water invasion has a great impact on gas wells. The influence of gas production is very large, and it is manifested in the development of many gas reservoirs. [0003] At present, the methods for studying the dynamics of water invasion in fractured gas reservoirs are mainly material balance and production dynamic analysis. A Preliminary Exploration of Its Mechanism" article, authored by He Xiao...

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Problems solved by technology

However, none of the above methods can be used to simulate the water invasion dynamics of fractured bottom water gas reservoirs in the laboratory, which is not conducive to carrying out related research work.

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