Remaining oil description method based on reservoir architecture

Abstract

The invention belongs to the technical field of explored and developed reservoir description, and particularly relates to a remaining oil description method based on reservoir architecture. The method comprises the steps that firstly, sedimentary facies of a target area are determined, and the sedimentary scale of the target area is subdivided; secondly, level dividing is performed on the reservoir architecture according to the subdivided sedimentary scale of the target area, and the reservoir architecture corresponding to a single sand body in the target area is determined; thirdly, a contact relation of the single sand body in the target area is built according to a reservoir architecture rock-electricity relation corresponding to a cored well in the target area; fourthly, according to the built contact relation of the single sand body in the target area, a reservoir architecture model covering the target area is built, and remaining oil distribution over control of the reservoir architecture covering the target area is determined. Accordingly, remaining oil potential tapping is effectively guided, and a basis is supplied to formulation of a development program.

Description

technical field [0001] The invention belongs to the technical field of reservoir description for exploration and development, in particular to a remaining oil description method based on reservoir configuration. Background technique [0002] In the late stage of high water-cut development, a lot of remaining oil occurs in single sand bodies. The shape and contact relationship of single sand bodies control the distribution characteristics of remaining oil. Accurate characterization of single sand bodies is the core and key to find remaining oil. Reservoir architecture analysis is a method to describe a single sand body. At present, domestic reservoir architecture describes the remaining oil mainly through the encrypted three-dimensional modeling grid method, sedimentary facies control method, sequential indicator modeling method, man-machine The interactive method is used to establish the reservoir architecture model, and the numerical simulation analysis of the reservoir arc...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a remaining oil description method based on reservoir architecture, which overcomes the difficulty in accurately describing the shape and contact relationship of single sand bodies in existing reservoir architecture modeling methods, which leads to the analysis of remaining oil distribution characteristics in single sand bodies. Describe imprecise defects

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