High-temperature rock crack propagation resistance measuring method and device
A technology of rock fractures, measurement methods, used in surveying, earthmoving, wellbore/well components, etc.
Pending Publication Date: 2021-05-07
CHINA UNIV OF PETROLEUM (BEIJING)
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[0004] The purpose of the embodiment of this specification is to provide a method and device for measuring the resistance to the expansion of rock cracks at high temperature, so as to solve the problem of how to measure the expansion resistance of rock cracks at the corresponding temperature
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present specification in combination with the drawings in the embodiments of the present specification. Obviously, the described embodiments are only some of the embodiments of the present specification, not all of them. Based on the embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.
[0017] In order to solve the above-mentioned technical problems, the embodiment of this specification proposes a method for measuring the crack propagation resistance of high-temperature rocks. Such as figure 1 As shown, the method for measuring the fracture propagation resistance of high-temperature rocks may specifically include the following steps.
[0018] S110: heating the rock sample to a test temperature; the rock sample is cut with preset fr...
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The embodiment of the invention provides a high-temperature rock crack propagation resistance measuring method and device. The method comprises the following steps of heating a rock sample to a test temperature; cutting a preset crack in the rock sample; applying pressure inside the rock sample to expand the preset crack, and detecting pressure data inside the rock sample; under the condition that it is detected that the preset crack extends to the boundary of the rock sample, measuring the crack length of the preset crack; and calculating the rock crack propagation resistance corresponding to the test temperature according to the pressure data and the crack length. According to the method, the crack propagation resistance of the rock at the specific temperature is measured, and the hardness of the high temperature to the fracture property of the rock in a real environment is simulated, so that guidance is provided for deep reservoir hydrofracture and geothermal exploitation in actual exploration and development.
Description
technical field [0001] The embodiments of this specification relate to the technical field of petroleum engineering rock mechanics, in particular to a method and device for measuring crack propagation resistance of high-temperature rocks. Background technique [0002] With the development of science and technology and society, the demand for energy is also increasing, and correspondingly, the demand for oil and other new energy exploitation is also increasing. At present, when mining underground resources, it has gradually developed into deep formations, and accordingly, the importance of evaluating the mining environment under high-temperature conditions in ultra-deep formations is also increasing. [0003] When exploiting oil in ultra-deep formations, it is extremely important to evaluate the fracture properties of rocks in the formation, whether it is to provide guidance for the design of hydraulic fracturing or to provide instructions for drilling design. The fracture p...
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IPC IPC(8): E21B49/00E21B47/00E21B43/26
CPCE21B49/00E21B47/00E21B43/26
Inventor 张广清陈磊
Owner CHINA UNIV OF PETROLEUM (BEIJING)