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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

Active 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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Problems solved by technology

Therefore, the traditional method of well-seismic collaborative division of sedimentary facies has shortcomings such as strong human factors and insufficient data information mining, especially at the level of sedimentary microfacies, which is often a collection feature of dominant sedimentary facies within a certain range, and the uncertainty of the boundary is relatively large. Large, which greatly limits the industrial application of this type of research results

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

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Embodiment Construction

[0028] In order to illustrate the purpose and advantages of the present invention in more detail, the detailed introduction of the present invention is launched in combination with the technical implementation flow chart and other drawings. The seismic data used in this paper are all examples of actual exploration and development production blocks to verify the feasibility and effectiveness of the invented method. The provenance of the sedimentary system in this block comes from the north, and the sedimentary background of the target interval is the delta sedimentation reformed by the tide. The thickness of the sedimentary sand body is relatively thin, most of which are between 3-10m. It is difficult to divide the sedimentary microfacies by relying on traditional technical methods. Big.

[0029] In this example, if figure 1 As shown, a method of well-seismic synergistic division of sedimentary microfacies based on a high-precision sequence framework model is provided. Accordi...

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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.

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...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/282G01V1/302G01V1/306G01V2210/624
Inventor 何文渊孙平
Owner 中国石油集团工程咨询有限责任公司
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