Quantitative characterization method of three main controlling factors of lacustrine molasse facies belt

The quantitative characterization method of the three major paleo-controlling factors of lacustrine mixed sedimentary facies zones has solved the problem that existing technologies cannot quantitatively characterize them, and has realized the analysis of the major controlling factors of lacustrine mixed sedimentary facies zones, thus promoting the accuracy and efficiency of oil and gas exploration.

CN116840934BActive Publication Date: 2026-06-05CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2022-03-23
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing technologies have failed to effectively quantitatively characterize the main controlling factors of lacustrine mixed sedimentary facies zone distribution, which affects the clarity of the development law of mixed sedimentary facies zones and the accuracy of oil and gas exploration.

Method used

A quantitative characterization method based on three major paleocontrolling factors of lacustrine mixed sedimentary facies zones was established, including the classification of mixed sedimentary rock types, paleotopographic analysis, paleoclimate analysis, and paleosalinity analysis, to comprehensively characterize the major controlling factors of lacustrine mixed sedimentary facies zones.

Benefits of technology

This study enabled the quantitative characterization of the main controlling factors of lacustrine mixed sedimentary facies zones, clarified the development law of facies zones, and promoted the accuracy and efficiency of oil and gas exploration and development.

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Abstract

The application provides a method for quantitatively characterizing three ancient main control factors of a lacustrine mixed sedimentary facies belt, which comprises the following steps: Step 1, mixed sedimentary rock type division is performed to identify the mixed sedimentary facies belt type; Step 2, ancient topography analysis is performed to establish a quantitative relationship template of the mixed sedimentary facies belt development and the ancient topography; Step 3, ancient climate analysis is performed to establish a quantitative relationship template of the mixed sedimentary facies belt development and the ancient climate; Step 4, ancient salinity analysis is performed to establish a quantitative relationship template of the mixed sedimentary facies belt development and the ancient salinity; and Step 5, a comprehensive quantitative characterization template of the three ancient main control factors of the mixed sedimentary facies belt is established. The method for quantitatively characterizing the three ancient main control factors of the lacustrine mixed sedimentary facies belt has a good effect on the analysis of the three ancient main control factors of the mixed sedimentary facies belt, and can provide technical guidance for the analysis of the control factors of the mixed sedimentary facies belt development and the research on the development law of the mixed sedimentary facies belt under the same sedimentary background.
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