Multi-information coupling progressive glutenite petrofacies determining method
A discriminative method, technology of glutenite, applied in earthwork drilling, wellbore/well components, etc., can solve problems such as difficulty in lithofacies identification and resolution impact of glutenite reservoirs
Active Publication Date: 2017-03-01
CHINA PETROLEUM & CHEM CORP +1
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The vertical changes of different lithofacies types are rapid, and the thickness of a single lithofacies is generally thin. Affected by the resolution of logging response, different logging series are seriously affected by surrounding rocks, which makes it difficult to identify lithofacies in glutenite reservoirs.
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[0015] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.
[0016] The logging response of different logging series is a comprehensive reflection of the specific characteristics of the reservoir, and the properties of the logging curves such as eigenvalues, frequency, and toothing degree all reflect the reservoir changes to a certain extent. Through the matching and coupling of the logging response attributes of different logging series, the differences and changes of different lithofacies types in reservoirs can be effectively identified, so as to realize the continuous identification and division of lithofacies.
[0017] Such as figure 1 as shown, figure 1 It is a flow chart of the multi-information coupling progressive glutenite lithofacies discrimination method of the present invention.
[0018] In step 1...
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The invention provides a multi-information coupling progressive glutenite petrofacies determining method comprising the following steps: 1, carrying out sensitivity factor analysis so as to determine a different petrofacies logging curve series; 2, building a petrofacies logging mode, and determining logging curve attribute parameter indexes corresponding to different petrofacies; 3, determining different level deposition interface types, and dividing distinguishable single type deposition units; 4, building different deposition unit two-dimension logging attribute indexes; 5, determining the petrofacies type according to different petrofacies logging attribute modes, thus building a continuous petrofacies profile. The multi-information coupling progressive glutenite petrofacies determining method can build different petrofacies logging attribute modes on the basis of logging series sensitivity analysis, and multi-algorithm coupled deposition unit dividing is combined, thus determining petrofacies type continuous distribution.
Description
technical field [0001] The invention relates to the technical field of oilfield development, in particular to a method for discriminating lithofacies continuity of glutenite reservoirs based on multi-information coupling such as different logging series, different logging attributes, and different mathematical algorithms. Background technique [0002] Glutenite reservoirs have strong heterogeneity and complex and diverse lithofacies. The vertical changes of different lithofacies types are rapid, and the thickness of a single lithofacies is generally thin. Affected by the resolution of logging response, different logging series are seriously affected by surrounding rocks, making it difficult to identify lithofacies in glutenite reservoirs. How to effectively identify the lithofacies types of glutenite reservoirs has become one of the bottlenecks in the exploration and development of glutenite reservoirs. For this reason, we invented a new multi-information coupled progressiv...
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Inventor 王筱文乌洪翠张丽艳曹刚徐朝晖曲全工王伟吕世超钱克兵巴志明解伟庄绪超李敬苗明
Owner CHINA PETROLEUM & CHEM CORP