Rock fracturing physical simulation system and test method

Abstract

The invention provides a rock fracturing physical simulation system and a test method and belongs to the technical field of rock physical simulation tests. The rock fracturing physical simulation system comprises a main body frame, a rock sample room for accommodating to-be-measured rock samples, an axial pressure device, a radial pressure device, an annular confining pressure device connected with the radial pressure device and applying a circumferential pressure to the to-be-measured rock samples, and a fluid conveying device for injecting fracturing fluid into the rock sample room. The invention also provides the test method of the rock fracturing physical simulation system. The test method comprises the following steps: loading a to-be-measured rock sample, applying an axial pressure and an annular confining pressure, injecting the fracturing fluid to break the rock sample, re-solidifying the broken rock sample, and scanning the solidified rock sample. Compared with the prior art,the rock fracturing physical simulation system and the test method provided by the invention truly restore the distribution and magnitude of ground stress, comprehensively simulate the stress state during rock fracturing, and provide reliable data for analyzing the mechanical properties and fracturing effect of rock.

Description

technical field [0001] The invention belongs to the technical field of rock physics simulation tests, and more specifically relates to a rock fracturing physics simulation system and test method. Background technique [0002] In recent years, the development process of unconventional oil and gas has been accelerated. Compared with conventional oil and gas reservoirs, unconventional oil and gas reservoirs are usually denser and have more complex pore structures. The characteristics of low porosity and low permeability make oil and gas production more difficult, which ultimately restricts oil and gas recovery and mining efficiency. At present, the industry mainly uses fracturing technology to realize fracture creation and increase permeability of reservoirs, and then obtain efficient development of unconventional oil and gas wells. Fracturing technology has been widely used in coalbed methane, tight gas, shale gas and other fields, and the fracability of reservoir rocks is re...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a physical simulation system for rock fracturing and a test method using the simulation system, aiming to solve the problem that the physical simulation system for rock fracturing in the prior art cannot comprehensively simulate the stress status of reservoir rocks and the analysis of fracturing effects Data reliability needs to be improved technical issues

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