System and method for visualization fracturing simulation experiment

Abstract

The invention relates to a system and method for a visualization fracturing simulation experiment. According to the technical scheme, the system comprises a visualization fracturing simulation experiment device, a pressure control module and a data acquisition module, wherein the visualization fracturing simulation experiment device is a square container, the pressure control module comprises a servo control injection pump, a confining pressure pump and the like, and the data acquisition module comprises a pressure data recorder and a high-definition high-frequency vidicon. Through combination of the visualization fracturing simulation experiment device and transparent specimens, crack initiation characteristics and expanding dynamic states of hydraulic fractures in interiors of the experiment specimens can be clearly known by researchers, and study of crack initiation mechanisms and expanding rules of the hydraulic fractures are deepened. According to the experiment method, crack initiation and expanding dynamic state videos of the fractures can be obtained, crack initiation and the expanding rules of the fractures can be clearly showed, storage of video data is simple, spreading is convenient, and the method can help the researchers to exchange experiment achievements across regions.

Description

technical field [0001] The invention relates to a fracturing simulation experiment device and method, in particular to a visual fracturing simulation experiment system and method. Background technique [0002] At present, major oil fields and research institutes have never stopped studying the fracturing mechanism, especially in recent years, with the efficient exploitation of unconventional energy sources such as shale gas, coalbed methane, and tight sandstone gas, it is even more required to fundamentally Find out the mechanism of fracture initiation and propagation, and provide basic theoretical support for obtaining fractures with high conductivity. The existing fracturing simulation experiment methods rely on non-visual experimental devices to perform fracturing simulation on opaque rock samples such as natural cores or artificial cores, and observe the fracture morphology after fracturing. The traditional method can only obtain the final fracture shape, and cannot...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a visual fracturing simulation experiment system and method for the above-mentioned defects in the prior art, which overcomes the fact that the traditional fracturing simulation experiment method cannot observe the fracture initiation and expansion dynamics in real time and can only study the final fracture shape. In the process of the experiment, the initiation and expansion dynamics of hydraulic fractures in the transparent test sample can be obtained in real time, so as to provide an experimental basis for researchers to study the crack initiation mechanism and expansion law, and deepen the researcher's understanding of the crack initiation mechanism and expansion law. cognition

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