Method for acquiring container layer coarseness area distribution rule

Abstract

The invention discloses a method for obtaining the areal distribution rule of the granularity of a storage layer, comprising the following steps: oil field geological exploration is carried out to a block to be measured, and the deposition and migration rule of the block is obtained according to the geological exploration result; the block to be measured is divided into different blocks according to deposition microphase unit bodies divided in the geological exploration result; correction is carried out to the divided blocks according to the actual measurement data of the drill core granularity of an exploratory well on the block to be measured; and an interpolation method is utilized to obtain the horizontal granularity distribution rule of the block to be measured. The method solves the shortage of insufficient core-obtaining data of the exploration well of a block, and realizes the distribution rule predication from point to the whole area. Well completion sand prevention proposal design is carried out according to the measured longitudinal and horizontal distribution rules of the granularity with more accurate and reliable design result, thus having important significance for improving the exploration efficiency of the oil field and the oil well productivity.

Description

technical field [0001] The invention relates to the technical field of geological exploration, in particular to a new grain size prediction method, which is a method for predicting the grain size distribution law of a reservoir area by combining actual measurement with sedimentary microfacies. Background technique [0002] At present, before the comprehensive development of a new block that may produce sand, more and more attention has been paid to designing a reasonable completion and sand control scheme. Scholars at home and abroad have conducted a lot of in-depth research on this, and proposed different completion methods for different reservoir characteristics. Well sand control program design methods, these methods are based on known reservoir particle size distribution, therefore, it has become more and more important to accurately predict the vertical and horizontal regional distribution of oilfield reservoir particle size. [0003] At present, the data of reservoir p...

AI Technical Summary

Problems solved by technology

Although the data obtained through core particle size testing is more accurate and direct, due to the small number of exploratory wells in a new block and limited coring, it is not enough to clarify the vertical and horizontal particle size distribution of the entire area; in addition, the core test results of exploratory wells are not Can fully reflect the reservoir grain size characteristics of the development well

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