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Fractured reservoir permeability tensor and anisotropy quantitative prediction method

A technology of anisotropy and prediction method, which is applied in the field of oil and gas exploration and development, and can solve the problems that the permeability tensor and anisotropy of fractured reservoirs cannot be quantitatively predicted.

Active Publication Date: 2015-04-08
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

[0004] The present invention aims to solve the above problems, and provides a method for quantitatively predicting the permeability tensor and anisotropy of fractured reservoirs, which solves the problem that the permeability tensor and anisotropy of fractured reservoirs cannot be quantitatively predicted

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  • Fractured reservoir permeability tensor and anisotropy quantitative prediction method

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specific Embodiment approach

[0085] The specific technical scheme of the present invention is illustrated by taking the fractured reservoir permeability tensor and anisotropic quantitative prediction of the second member of the Funing Formation (abbreviated as the second member of the Funing Formation) in the east wing of the Tongcheng fault zone in the Jinhu Sag of Subei Basin as an example:

[0086] The Tongcheng Fault Zone is located in Jinhu County, Jiangsu Province, and the research area is mainly located in the eastern wing of Subei Basin-Dongtai Depression-Jinhu Sag-Tongcheng Fault Zone. The Tongcheng fault is a typical strike-slip fault, which meets the Yangcun fault at the boundary of the Jinhu Sag in the south and disappears in the Tongcheng area to the north ( image 3 ). The main oil-producing layer in the study area is the Fu 2 Member, and the reservoir properties are poor, and the lithology is mainly low-permeability siltstone.

[0087]Since the deposition of the Fu 2 Member, the Tongcheng ...

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Abstract

The invention relates to the field of oil-gas field exploration and development, in particular to a fractured reservoir permeability tensor and anisotropy quantitative prediction method. On the basis of stress field numerical simulation, a static coordinate system and a dynamic coordinate system are integrated into a geodetic coordinate system by using the current occurrence of fractures, multiple groups of fracture permeability tensor quantitative prediction models are established, quantitative calculation formulas of the permeability principal direction and data are given, and the permeability of fractures in units in different directions is predicted by adjusting the rotation angle of the dynamic coordinate system. The fractured reservoir permeability tensor and anisotropy quantitative prediction method is based on strict mathematical algorithm derivation, a corresponding calculating program can be developed by using computer programming languages, fractured reservoir permeability tensor and anisotropy quantitative prediction is realized, the prediction cost is low, the operability is high, and the prediction result has certain guiding significance on determining the fault block permeability dominant direction, deploying and developing well patterns reasonably, and determining the spatial location relationship between an injection well and a producing well.

Description

technical field [0001] The invention relates to the field of exploration and development of oil and gas fields, in particular to a method for quantitatively predicting the permeability tensor and anisotropy of fractured reservoirs. Background technique [0002] In the development process of low-permeability reservoirs, fractures are the main channels for oil and gas seepage, and the anisotropy and anisotropy of fracture permeability are the main factors affecting the direction of oil-water flow. The biggest difficulty in the exploration and development of fractured oil and gas reservoirs lies in the reservoir Prediction of fracture development degree and distribution range in rock mass and analysis of fracture permeability anisotropy. The formation and evolution of fractures are closely related to the evolution of the in-situ stress field from ancient to modern times. Among them, the effective stress has a great influence on the seepage capacity of fractured low-permeability...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 刘敬寿戴俊生韩中王历强姜明玉杨海盟王硕任启强徐珂
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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