Method and device for physically simulating heterogeneous reservoirs

Abstract

The invention provides a method and device for physical stimulation of a heterogeneous oil reservoir. The method can comprise the steps of obtaining interlayer parameters of the oil reservoir to be explored; dividing the oil reservoir to be explored into multiple sub-reservoirs and obtaining the permeability of each sub-reservoir; according to the proportion of the oil reservoir to be explored and a model to be established, mapping the interlayer parameters and the permeability of each sub-reservoir into the model to be established; conducting exploration operations on the model corresponding to the reservoir to be explored, conducting amplification, and regarding an exploration operation result obtained after amplification as the exploration result of the oil reservoir for to be explored. According to the method and device, an actual oil reservoir of an on-site size is reduced to an indoor small-size model, various exploration operations are conducted with the small-size model, and the exploration operation result is amplified as an oil reservoir stimulation experiment result, so that the technical problem that the analysis result of oil reservoir analysis using a homogeneous oil reservoir is inaccurate is solved, and the technical effect of improving the accuracy of the oil reservoir analysis result is achieved.

Description

technical field [0001] The invention relates to the technical field of geological exploration and development, in particular to a method and device for physically simulating heterogeneous oil reservoirs. Background technique [0002] Reservoirs have certain heterogeneity, manifested in large vertical or horizontal permeability gradients, many and wide interlayers, and locally developed fractures. Due to the local development of interlayers in the reservoir and the difference in permeability along the direction of the horizontal well, the utilization degree of different horizontal well sections is quite different. Often only 1 / 4 of the 400-meter-long horizontal well section can be effectively recovered. As a result, the oil production rate and oil-gas ratio were significantly lower than expected. [0003] In the prior art, in order to achieve a reasonable prediction of the reservoir, generally the way of reservoir simulation can be adopted, that is, the real reservoir is tra...

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Problems solved by technology

[0005] The present invention provides a method and device for physically simulating heterogeneous oil reservoirs to solve the problem of inability to effectively scale the factors such as interlayers and permeability differences locally developed in the oil reservoirs when physically simulating oil reservoirs in the prior art The problem

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