Fracture-cavity carbonate reservoir uncertainty modeling method and device thereof

Abstract

The invention provides a fracture-cavity carbonate reservoir uncertainty modeling method and a device thereof. The method comprises steps: a modeling method of cause control is adopted, at least one uncertain geological parameter is selected to carry out uncertainty modeling on first discrete distribution models for different types of reservoirs, and second discrete distribution models are acquired; the second discrete distribution models are integrated to form a third discrete distribution model, wherein the third discrete distribution model contains multiple fracture-cavity reservoir three-dimensional discrete distribution models; and the fracture-cavity reservoir three-dimensional discrete distribution models in the third discrete distribution model are screened to acquire a fourth discrete distribution model with at least one fracture-cavity reservoir three-dimensional discrete distribution model kept. The scheme takes into account the differences of reservoir scales, the influences of uncertainty and the constraints of geological laws and causes on the modeling process, and also avoids the problems of inconsistent understanding of production dynamics and connectivity and inaccurate reserves when only one model is built in the past.

Description

technical field [0001] This specification relates to an uncertainty modeling method and device for a fractured-cavity carbonate reservoir. Background technique [0002] Fracture-vuggy carbonate reservoirs are formed through multi-stage tectonic movements and paleokarst, with karst fractures and caves as the main reservoir. In this kind of reservoir modeling research, due to differences in data (data quality, quantity, etc.), research technology levels and methods, researchers have subjective understanding, prediction of reservoir spatial distribution, and quantitative representation of reservoir heterogeneity. greater uncertainty. [0003] At this stage, there are relatively reliable methods for uncertainty evaluation of reservoirs and how to reduce uncertainty. However, for uncertainty modeling, especially for fracture-cavity carbonate rocks, There is no more feasible method. Contents of the invention [0004] The purpose of this description is to provide a method and ...

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Problems solved by technology

In this kind of reservoir modeling research, due to differences in data (data quality, quantity, etc.), research technology levels and methods, researchers have subjective understanding, prediction of reservoir spatial distribution, and quantitative representation of reservoir heterogeneity. large uncertainty

[0003] At this stage, there are relatively reliable methods for uncertainty evaluation of reservoirs and how to reduce uncertainty. However, for uncertainty modeling, especially for fracture-cavity carbonate rocks, There is no more feasible method

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