Method for evaluating homogeneous degree of reservoir plane by using high-quality connectivity rate

Abstract

The invention discloses a method for evaluating the homogeneous degree of a reservoir plane by using a high-quality connectivity rate. The method comprises the following steps that reservoir propertyevaluation elements are determined; high-quality reservoir plane distribution is determined according to preset conditions; a virtual well pattern is deployed in a target area; the total number of injection-production corresponding connecting lines and the injection-production high-quality connectivity number of oil-water wells are calculated according to the preset conditions; the quotient of thehigh-quality connectivity number and the total number of the oil-water well injection-production corresponding connecting lines is the injection-production high-quality connectivity ratio; and the homogeneity degree of the reservoir plane is quantitatively evaluated by applying the high-quality connectivity rate. By introducing a high-quality connectivity rate new concept, the reservoir evaluation means are converted into quantitative evaluation based on the corresponding relation of the oil-water wells from original statistics based on single well points, and the problems that in the prior art, the high-quality reservoir connection degree cannot be accurately described, and the matching relation between reservoir properties and the development well patterns is difficult to reflect are solved; a novel reservoir plane homogeneity degree evaluation method is provided, and the development practicability of reservoir evaluation is improved.

Description

technical field [0001] The invention relates to the technical field of oil reservoir description, in particular to a method for evaluating the plane homogeneity degree of a reservoir by using high-quality connectivity. Background technique [0002] The horizontal homogeneity of the reservoir directly affects the degree of control of high-quality reserves by the reservoir development well pattern, as well as the seepage characteristics and spatial distribution of fluids during the development process. In the process of reservoir development plan design and development adjustment, the evaluation of reservoir homogeneity degree is an indispensable work as the basis of well pattern deployment, adjustment and dynamic analysis. [0003] At present, the evaluation methods of horizontal homogeneity degree of reservoir mainly include: qualitative description method of reservoir sand body geometry, evaluation method of sand body drilling encounter rate, and evaluation method of physic...

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Problems solved by technology

[0004] The present invention aims to overcome the problems that existing related technologies in the background technology cannot accurately describe the degree of connection of high-quality reservoirs, and it is difficult to reflect the matching relationship between reservoir properties and development well patterns, and provide a method for evaluating reservoirs by using high-quality connectivity Plane homogeneity method

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