A method for the division of sedimentary microfacies by well-seismic cooperation based on high-precision sequence framework model

A technology of sedimentary microfacies and sequence framework, which is applied in the field of oil and gas exploration, can solve the problems of restricting the industrial application of research results, large boundary uncertainties, and insufficient data information mining, and achieve reliable technical support, strong certainty, The effect of predicting a stable outcome
CN112505754BActive Publication Date: 2021-10-26中国石油集团工程咨询有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
中国石油集团工程咨询有限责任公司
Publication Date
2021-10-26

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Abstract

The invention discloses a method for well-seismic cooperative division of sedimentary microfacies based on a high-precision sequence framework model. The method is based on the seismic response characteristics of stratum lithology combination and sedimentary body cycle characteristics under a high-precision sequence stratigraphy shelf, and establishes well ‑ The matching relationship of seismic-sedimentary facies features, optimizing the seismic attributes that are sensitive to the type of strata-sedimentary facies, and establishing a three-dimensional data volume of sedimentary sub-facies and micro-facies of the research target layer through well-seismic collaborative simulation. The reliability and accuracy of the three-dimensional data volume of sedimentary facies were verified through the law of facies sequence, and finally the classification results of sedimentary facies suitable for industrial standards were obtained. The three-dimensional data volume of sedimentary microfacies obtained by the present invention can greatly improve the working efficiency of sedimentary facies division, and has high horizontal and vertical resolutions, and the result of fine division of sedimentary microfacies is more certain and reliable.
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Description

technical field

[0001] The invention relates to the technical field of oil and gas exploration, in particular to a method for well-seismic cooperative division of sedimentary microfacies based on a high-precision sequence framework model. Background technique

[0002] Drilling and logging data and seismic data are important basis for sedimentary facies division. Drilling and logging data can better reflect the characteristics of lithology combination, porosity and permeability, and oil and gas properties of formations on the well point trajectory through well logging, mud logging and core sampling. This kind of data has extremely high precision, and can reflect the characteristics of centimeter-level rock formations and oil and gas layers at the highest level, and can characterize the combination of stratigraphic sedimentary facies sequences and the vertical changes of sedimentary subfacies and microfacies. However, such vertical and high-precision sedimentary facies change...

Claims

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