Dual medium numerical reservoir simulation parameter adjusting method

Abstract

The invention discloses a dual medium numerical reservoir simulation parameter adjusting method, comprising the following steps: step A, establishing an oil reservoir three-dimensional geological conceptual model; step B, establishing an oil reservoir numerical simulation model; step C, performing numerical reservoir simulation research using the conceptual model; step D, establishing a water-containing and reserve recovery degree relationship plate; step E, comparing actual production data with the plate, determining a reservoir pore structure type near a well point; step F, guiding correction of a geological parameter in a production history fitting process according to a determined pore structure type. The method is based on a theoretical model, oil reservoir production characteristicsare tightly associated with reservoir development characteristics, and reservoirs are classified through the theory plate, and main controlling factors influencing oil reservoir production are made clear. The method develops pointed parameter adjusting fitting, improves scientificity of history matching parameter adjusting, so as to greatly improve working efficiency and accuracy of dual medium numerical reservoir simulation history matching.

Description

technical field [0001] The invention relates to a simulation parameter adjustment method, in particular to a dual-media reservoir numerical simulation parameter adjustment method, which belongs to the technical field of reservoir engineering research and application. Background technique [0002] Due to the complex distribution of fracture-matrix relationship and various seepage capabilities in dual-media reservoirs, there is strong heterogeneity in the plane and vertical directions. In some parts, fractures are relatively developed, while in some parts, fractures are relatively undeveloped; in some parts, both fractures and matrix have fluid seepage, while in some parts, only fractures are permeable, and fluid seepage does not occur inside the matrix. [0003] In the existing technology, production history matching is mainly performed by adjusting fracture parameters. For example, Zheng Qiang pointed out in the article "Discussion on Numerical Simulation Methods for Fractur...

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Problems solved by technology

[0004] On the one hand, the size and distribution of fractures in dual-media reservoirs are chaotic. On the other hand, numerical simulation production history matching is an extremely cumbersome and working process. The previous method of adjusting parameters for numerical simulation history matching of dual-media reservoirs completely relied on the early analysis of fractures. However, the basic geological research has not organically combined the reservoir production characteristics with the reservoir type research, and the adjustment parameters lack guidance. Therefore, a dual-media reservoir numerical simulation parameter adjustment method is proposed to solve the above problems.

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