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Rock mechanics and reservoir engineering parameter evaluation method

A technology of engineering parameters and rock mechanics, applied in the field of rock mechanics, can solve problems such as inability to accurately obtain reservoir engineering parameters, time-consuming and labor-intensive coring, etc., and achieve high accuracy and high estimation accuracy

Inactive Publication Date: 2020-06-09
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The present invention provides a method for evaluating rock mechanics and reservoir engineering parameters, which solves or partially solves the technical problems in the prior art that deep reservoir coring takes time and effort and cannot accurately obtain reservoir engineering parameters

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  • Rock mechanics and reservoir engineering parameter evaluation method

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Embodiment Construction

[0019] see figure 1 , a rock mechanics and reservoir engineering parameter evaluation method provided by an embodiment of the present invention is characterized in that it includes:

[0020] Obtain cuttings discharged while drilling deep wells.

[0021] Carry out X-ray diffraction on the cuttings to obtain the mineral composition and content of the cuttings.

[0022] The cuttings are scanned by CT and observed under a microscope to obtain the microstructure characteristics of each mineral particle of the cuttings.

[0023] The micro / nano indentation test is carried out on the cuttings, the micromechanical parameters of each mineral composition of the cuttings are measured, and the microscopic characteristic genes of the cuttings are obtained.

[0024] Construct a three-dimensional calculation model based on the microscopic characteristic genes of cuttings, assign the micromechanical parameters of each mineral composition of cuttings to discrete material points in the model, ...

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Abstract

The invention discloses a rock mechanics and reservoir engineering parameter evaluation method, and belongs to the technical field of rock mechanics. The rock mechanics and reservoir engineering parameter evaluation method comprises the following steps: performing X-ray diffraction on rock debris to obtain mineral components and contents of the rock debris; performing CT scanning on the rock debris, performing observation under a microscope, and obtaining the microstructure characteristics of all mineral particles of the rock debris; carrying out a micro / nano indentation test on the rock debris, and determining the micromechanical parameters of each mineral component of the rock debris; constructing a three-dimensional calculation model according to the rock debris microcosmic characteristic gene, and taking a representative volume unit to obtain rock macromechanics parameters; and evaluating the engineering parameters of the field requirements according to the rock macromechanics parameters and the engineering parameter evaluation model. The rock mechanics and reservoir engineering parameter evaluation method can effectively and accurately obtain engineering parameters required onsite and is of great significance to design and optimization of on-site drilling and fracturing engineering.

Description

technical field [0001] The invention relates to the technical field of rock mechanics, in particular to a method for evaluating rock mechanics and reservoir engineering parameters. Background technique [0002] Fully understanding the mechanical properties of rocks in deep reservoirs is of great significance for the efficient development of deep resources. In engineering, laboratory tests are usually used to test the basic mechanical parameters of rock cores. With the gradual development of the reservoir, the geological structure environment is complex, and the coring operation becomes very difficult. It is also difficult to obtain rock mechanical parameters through laboratory tests, resulting in a certain degree of blindness in drilling and fracturing operations, resulting in low productivity of the reservoir. Ideal and other consequences. However, the cuttings discharged during the drilling process contain characteristic genes such as mineral composition, mineral particl...

Claims

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Application Information

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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 胡大伟丁长栋宋金良马东东周辉邵建富张杨滕起陈庆庹维志刘建军张传庆卢景景杨凡杰朱勇高阳赵艺伟
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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