Method for quantitatively evaluating reservoir forming probability of oil and gas reservoir
A quantitative evaluation and oil and gas reservoir technology, applied in data processing applications, instruments, calculations, etc., can solve the problem that the geological model cannot meet the accurate description of complex reservoirs, and achieve strong operability and accuracy, convenient operation, and clear conclusions Effect
Pending Publication Date: 2021-08-17
CHINA NAT OFFSHORE OIL CORP +1
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[0004] The purpose of this application is to overcome the problem that the geological model of single data or research results in the prior art cannot satisfy the accurate description of complex reservoirs, and propose a method for quantitatively evaluating the accumulation probability of oil and gas reservoirs for oil fields with complex reservoirs
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[0055] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.
[0056] In the process of oil and gas exploration, the evaluation of trap oil and gas has been paid more and more attention. At present, the evaluation of the hydrocarbon-bearing properties of traps is mainly carried out in four aspects: the analysis of the geological characteristics of the traps, the analysis of the main controlling factors of the hydrocarbon-bearing properties of the traps, the research on the accumulation mechanism of the traps and the comprehensive evaluation of the traps. The methods of pattern recognition or accumulation mechanism recognition are often used for ...
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The invention discloses a method for quantitatively evaluating the reservoir forming probability of an oil and gas reservoir, and relates to the technical field of rock reservoir development, and the method comprises the following steps: obtaining the reservoir forming condition of a target reservoir; analyzing a reservoir forming mode of the target reservoir according to the three-dimensional seismic data and the drilling data; according to the exploration and / or mining stage of the reservoir, screening a decisive reservoir forming condition from reservoir forming conditions; obtaining the structural classification of the target reservoir, and carrying out the quantitative evaluation of each structural classification unit of the reservoir according to a decisive reservoir formation condition; establishing an oil-gas containing probability quantitative characterization parameter calculation formula of the target reservoir, performing quantitative scoring on each structure classification unit, and performing calculation to obtain an oil-gas containing probability quantitative characterization parameter of each structure classification unit; and determining an oil and gas containing probability critical value of the target reservoir according to geological conditions so as to determine the reservoir forming probability of the target reservoir. According to the reservoir forming probability provided by the invention, the conclusion is clear, the result is practical, and the operability and the accuracy are relatively high.
Description
technical field [0001] The invention relates to the technical field of petroleum exploration and development, in particular to a method for quantitatively evaluating the accumulation probability of oil and gas reservoirs. Background technique [0002] Whether a trap can form an oil and gas reservoir with certain development value is controlled by a number of geological conditions, including oil-generating conditions, reservoir conditions, caprock conditions, trap conditions, migration conditions, and preservation conditions. Among them, trap conditions, migration conditions and their configuration relationship are the most critical factors for hydrocarbon accumulation. [0003] In the process of oil and gas exploration, the evaluation of oil and gas bearing property of traps has been paid more and more attention. At present, the evaluation of the hydrocarbon-bearing properties of traps is mainly carried out in four aspects: the analysis of the geological characteristics of ...
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IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/06393G06Q50/02
Inventor全洪慧李彦来刘春艳张章王保全侯东梅王双龙常涛杨威郭敬民
OwnerCHINA NAT OFFSHORE OIL CORP