Dynamic Fracture Judgment Method and Device for Pore Throat Network Model in Displacement Simulation
A technology of pore throat and network model, which is applied in the field of unconventional oil and gas reservoir development and research, can solve problems such as errors and do not consider the process of dynamic throat cracking, and achieve the effect of reducing errors.
Active Publication Date: 2022-01-04
PETROCHINA CO LTD
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However, since reservoir development is a dynamic process, and these pore throat network models do not consider the process of dynamic throat cracking, there is a certain error between the displacement simulation process and the actual displacement process
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[0050] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application. For example, in the following description, forming the second component above the first component may include an embodiment in which the first component and the second component are formed in direct contact, and may also include an embodiment in which the first component and the second component are formed in indirect contact ( That is, the...
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The embodiment of the present application provides a dynamic fracture determination method and device for a pore throat network model in a displacement simulation, the method includes: obtaining characteristic parameters of porous media, and constructing a two-dimensional pore throat network model according to the characteristic parameters ; Displacement simulation of the seepage law of the two-dimensional pore-throat network model; in the process of simulating the seepage law, when it is confirmed that the apex pressure of the throat unit in the two-dimensional pore-throat network model reaches a critical pressure value , so that the corresponding throat unit is opened to form a fracture, so as to update the two-dimensional pore throat network model. The embodiment of the present application can realize the dynamic fracture judgment of the pore throat network model in the displacement simulation, and can improve the accuracy of the displacement simulation.
Description
technical field [0001] This application relates to the technical field of unconventional oil and gas reservoir development research, in particular to a dynamic fracture determination method and device for a pore throat network model in displacement simulation. Background technique [0002] The development and research of unconventional oil and gas reservoirs is of strategic significance to my country's energy resources. Their reservoirs have the characteristics of dual porous media. The research on the influence of micropore distribution and dynamic micropore opening and expansion on seepage is the key to solve the development of these resources. For the development of these unconventional oil and gas reservoirs with complex pore structure characteristics, it is difficult to solve them simply from the macroscopic seepage theory. Therefore, it will be a new breakthrough to conduct research on the microscopic structural characteristics and microscopic seepage mechanism. [000...
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IPC IPC(8): G06F30/20G06F30/18G06F119/14
CPCG06F30/20
Inventor 吕伟峰贾宁洪王智刚李彤刘庆杰杨济如杨胜建
Owner PETROCHINA CO LTD