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Shale oil and gas reservoir fracture parameter inversion method based on fracturing fluid flowback data

A shale oil and gas parameter inversion technology, applied in the fields of electrical digital data processing, instrumentation, design optimization/simulation, etc., can solve the problem that the fracture inversion model is not applicable to shale oil and gas reservoirs

Active Publication Date: 2022-03-11
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0005] The embodiment of this specification provides a shale oil and gas reservoir fracture parameter inversion method based on fracturing fluid flowback data to solve the problem that the fracture inversion model based on fracturing fluid flowback data in the prior art is not applicable to shale Oil and Gas Reservoir Problems

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  • Shale oil and gas reservoir fracture parameter inversion method based on fracturing fluid flowback data
  • Shale oil and gas reservoir fracture parameter inversion method based on fracturing fluid flowback data
  • Shale oil and gas reservoir fracture parameter inversion method based on fracturing fluid flowback data

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[0045] The principle and spirit of this specification will be described below with reference to several exemplary embodiments. It should be understood that these implementations are given only to enable those skilled in the art to better understand and implement this specification, but not to limit the scope of this specification in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0046] Those skilled in the art know that the embodiments of this specification can be implemented as a system, device, method or computer program product. Therefore, the disclosure in this specification can be implemented in the form of complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0047] Considering that the existing fracture inversion model based on fracturing fluid flow...

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Abstract

The invention relates to the technical field of oil and gas field development, and particularly discloses a shale oil and gas reservoir fracture parameter inversion method based on fracturing fluid flowback data, which comprises the following steps: constructing a shale oil and gas reservoir fracture parameter inversion mathematical model and a matrix seepage mathematical model; pseudo-pressure and pseudo-time are introduced, a variable separation method and the Duhamel principle are used for solving the crack parameter inversion mathematical model, and a linear form analytical solution is obtained; solving the matrix seepage mathematical model by using a separation variable method and a Duhamel principle to obtain the matrix-to-crack fluid channeling amount; simultaneously solving the fracture and matrix material balance equation to determine the change relation of the average pressure in the fracture and the matrix along with the time and the change relation of the average saturation along with the time; and performing inversion iteration on the fracture parameters based on the linear form analytical solution, the average pressure and the change relation of the average saturation along with time so as to determine the fracture parameters of the shale oil and gas reservoir. According to the scheme, the fracture parameters of the shale oil and gas reservoir can be accurately and timely solved.

Description

technical field [0001] This specification relates to the technical field of oil and gas field development, in particular to a method for inversion of fracture parameters in shale oil and gas reservoirs based on fracturing fluid flowback data. Background technique [0002] For the inversion technology of fracture parameters in oil and gas reservoirs, the current main methods are cross-well microseismic technology, well test analysis and production performance analysis technology. Cross-well microseismic data can obtain fracture geometry, complexity, and spatial location information, but it is difficult to quantitatively evaluate seepage parameters such as fracture permeability and pore volume; well test analysis can quantitatively evaluate fracture seepage parameters, but due to the need for shut-in tests, economic Although the production dynamic analysis is economical and the data acquisition is simple and economical, the interpretation accuracy is low, and the characteristi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F113/08G06F119/14
CPCG06F30/28G06F2113/08G06F2119/14
Inventor 张凤远李捷涵芮振华王晨潘杨赵晓亮刘月亮
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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