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Rock relative permeability determination method and device

A technology of relative permeability and determination method, applied in the field of rock relative permeability determination, can solve the problem of inaccurate relative permeability, etc., and achieve the effect of accurate relative permeability and strong reliability

Active Publication Date: 2021-06-18
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a method and device for determining the relative permeability of rock to solve the problem in the prior art that the relative permeability curve is simplified to a function of fluid saturation resulting in inaccurate relative permeability

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  • Rock relative permeability determination method and device
  • Rock relative permeability determination method and device

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Embodiment Construction

[0031] The principle and spirit of the present application will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present application, rather than to limit the scope of the present application 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.

[0032] Those skilled in the art know that the embodiments of the present application may be realized as a system, device, method or computer program product. Therefore, the disclosure of the present application can be specifically implemented in the form of complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0033] Considering that there are many parameters other t...

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Abstract

The invention provides a rock relative permeability determination method and device. The method comprises the steps that the preset phase fluid Euler coefficient and the preset phase fluid saturation degree of a target rock are obtained, the preset phase fluid Euler coefficient is used for representing the preset phase fluid topological connectivity of the target rock, the preset phase fluid is a wetting phase fluid or a non-wetting phase fluid; and the preset phase fluid relative permeability of the target rock is determined based on the preset phase fluid Euler coefficient and the preset phase fluid saturation. In the scheme, the relative permeability is not only related to the fluid saturation, but also related to the topological connectivity of the fluid, so that the relative permeability of the preset phase fluid of the target rock is determined based on the preset phase fluid Euler coefficient and the preset phase fluid saturation for representing the topological connectivity of the preset phase fluid, and the obtained relative permeability is more accurate; the reliability is high.

Description

technical field [0001] The present application relates to the technical field of oil and gas field development, in particular to a method and device for determining the relative permeability of rock. Background technique [0002] The relative permeability curve is a key parameter in the process of oil and gas field development. It directly determines the seepage law of multiphase fluids in porous media, and is especially important for controlling the breakthrough time of water cut and improving the ultimate recovery factor. In addition, as an important input parameter of reservoir numerical simulation, relative permeability curve also directly affects the reliability of oil and gas field development optimization adjustment and effect prediction. Accurately characterizing the change law of the relative permeability curve is of great significance to the decision-making of oil and gas field development. [0003] In view of the importance of the relative permeability curve, pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/28G06Q50/02G01N15/08
CPCG06F30/23G06F30/28G06Q50/02G01N15/082
Inventor 王代刚宋考平周福建鞠野郑玉飞柏明星谢坤陈晋
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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