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Reservoir waterflood developing potential comprehensive evaluation method and device

A comprehensive evaluation and reservoir technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as limitations of consideration factors, deviation from reality in high water-cut reservoir potential prediction results, and single means

Inactive Publication Date: 2018-03-27
PETROCHINA CO LTD
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Problems solved by technology

Due to limited considerations and single means, the potential prediction results of high water-cut reservoirs often deviate from reality

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  • Reservoir waterflood developing potential comprehensive evaluation method and device
  • Reservoir waterflood developing potential comprehensive evaluation method and device
  • Reservoir waterflood developing potential comprehensive evaluation method and device

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Embodiment Construction

[0074] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0075] For the evaluation of water flooding development potential of high water-cut reservoirs, methods such as production decline method, water drive curve method, and prediction model method can be used to calculate parameters such as remaining recoverable reserves, remaining reserve-production ratio, and ultimate recovery factor. The m...

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Abstract

The invention provides a reservoir waterflood developing potential comprehensive evaluation method and device. The method comprises the steps of constructing an evaluation factor set of an oil reservoir to be evaluated, wherein the evaluation factor set comprises evaluation factors corresponding to different level indexes; according to the relative importance degrees of the evaluation factors, calculating the initial weight vector of the evaluation factor in the k-level index corresponding to the evaluation factor in the (k-1)-level index and a target weight vector of the evaluation factor inthe second-level index corresponding to the evaluation factor in the first-level index; according to the membership and the initial weight vector of the evaluation factor in the k-level index, sequentially calculating and obtaining a fuzzy evaluation vector of the second-level index; on the basis of the fuzzy evaluation vector and the target weight vector of the second-level index, calculating andobtaining a fuzzy evaluation vector of the first-level index, and on the basis of the preset comprehensive evaluation set of the oil reservoir to be evaluated, performing waterflood developing potential comprehensive evaluation on the oil reservoir to be evaluated. According to the reservoir waterflood developing potential comprehensive evaluation method and device, the reservoir waterflood developing potential comprehensive evaluation accuracy can be improved.

Description

technical field [0001] The application belongs to the technical field of oil and gas development, and in particular relates to a comprehensive evaluation method and device for water flooding development potential of oil reservoirs. Background technique [0002] At present, various water flooding reservoirs have undergone more than ten to several decades of water injection development, and most reservoir blocks have entered the stage of high water cut and high recovery degree, facing the huge challenge of further efficient development. For the water flooding stage of high water-cut reservoirs, the advantages and disadvantages of the geological conditions of the reservoir itself and the current development status, as well as the scale of remaining recoverable reserves and the degree of development difficulty, the research and analysis of comprehensive evaluation of water flooding development potential is very important for the development adjustment of the reservoir in the midd...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 吕恒宇赵亮邹存友韩洁赖令彬许晓明田雅洁匡明
Owner PETROCHINA CO LTD
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