Screening and evaluation method of artificial edge water flooding fault-block reservoirs

An evaluation method and oil reservoir technology, applied in earthwork drilling, production fluid, wellbore/well components, etc., can solve problems such as unclear evaluation conditions for reservoir screening, alleviate the problem of sewage discharge, increase control reserves, Effects that are easy to apply

Active Publication Date: 2017-02-08
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for screening and evaluation of artificial edge water flooding reservoirs, which solves the problem that the conditions for the screening and evaluation of reservoirs suitable for artificial edge water flooding are not clear, and realizes the standardization and standardization of artificial edge water flooding reservoir screening and evaluation. purpose of

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  • Screening and evaluation method of artificial edge water flooding fault-block reservoirs
  • Screening and evaluation method of artificial edge water flooding fault-block reservoirs
  • Screening and evaluation method of artificial edge water flooding fault-block reservoirs

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[0018] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0019] Through the research on water flooding mechanism of artificial edge water flooding reservoirs, the theory of main controlling factors of development effect and field practice, the present invention summarizes the "secondary enrichment" and "universal distribution" of remaining oil in artificial edge water flooding reservoirs. Based on the "strong water washing" water flooding mechanism in the "area, a set of screening and evaluation criteria suitable for artificial edge water flooding development has been formulated: (1) In order to avoid overflow of injected water and take into account the effectiveness of water injection, fault block Should be relatively closed or have lithological boundaries. (2) Considering the main controlling factors...

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Abstract

The invention provides a method for screening and evaluating an edge water drive fault block oil reservoir. The method comprises the steps of (1) carrying out fine reservoir description on a candidate fault block oil reservoir and establishing an oil reservoir fine geological model; (2) correcting the oil reservoir fine geological model by carrying out numerical oil reservoir simulation on the basis of the step (1); (3) obtaining an oil reservoir basic geological parameter by utilizing the corrected oil reservoir fine geological model which is obtained in the step (2); (4) analyzing the oil reservoir basic geological parameter which is obtained in the step (3) and comprehensively judging whether the candidate fault block oil reservoir is suitable for the development of an artificial edge water drive or not by referencing a screening and evaluating standard which is suitable for carrying out artificial edge water drive oil reservoir development. According to the method for screening and evaluating the edge water drive fault block oil reservoir, provided by the invention, the problem that the screening and evaluating conditions suitable for carrying out the artificial edge water drive oil reservoir development is indefinite is solved, and the purpose for normalizing and standardizing the screening and evaluating work of the artificial edge water drive oil reservoir is realized.

Description

technical field [0001] The invention relates to the field of greatly increasing the recovery rate of water flooding in the extra-high water-cut period of complex fault-block oil reservoirs, in particular to a method for screening and evaluating artificial edge water-flooding fault-block oil reservoirs. Background technique [0002] The geological reserves of fault-block reservoirs are high, and many of them have entered the stage of ultra-high water-cut development as a whole, and the distribution of remaining oil presents the characteristics of "universal distribution and local enrichment". For the remaining oil in the "locally enriched" area, there are currently suitable technical methods for tapping the remaining oil potential, but for the "universally distributed" remaining oil, there is still no effective means to improve the oil displacement efficiency and sweep coefficient, and it is urgent to find new ways to improve recovery technology methods. In the production pr...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20
Inventor 杨勇牛栓文王建路智勇刘维霞胡罡庞丽丽宋志超吴义志王瑞张红李钢
Owner CHINA PETROLEUM & CHEM CORP
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