Method and device for compiling black shale quantitative paleo-geographic map

Abstract

The embodiment of the invention provides a method and device for compiling a black shale quantitative paleo-geographic map, and the method comprises the steps: analyzing the causes of all material components in a black shale sample, and determining the material components of land source debris as a single factor; compiling a map for each single factor; for each single factor, determining a sedimentary facies mode of the single factor according to the map of the single factor, the geodetic structure background of the black shale sample and the sedimentary characteristics of the black shale sample, and determining a microfacies division rule for each sedimentary facies mode; and according to the map of each single factor and the microfacies division rule, compiling an ancient geographic mapaccording to the layer sections. According to the scheme, the substance components of the terrestrial debris are determined as the single factors, and the ancient geographic map is compiled accordingto the layer sections according to the map of each single factor and the microfacies division rule, so that the accuracy of the black shale quantitative ancient geographic map is improved, and a basisis provided for clarification of black shale distribution and sedimentary facies distribution and optimization of favorable zones and targets.

Description

technical field [0001] The invention relates to the technical field of shale oil and shale gas exploration, in particular to a method and device for compiling a quantitative paleogeographic map of black shale. Background technique [0002] Quantitative paleogeographic maps are the basis for clarifying the distribution of black shale, evaluating favorable shale oil and shale gas exploration zones, and determining well location targets. Since the single-factor analysis and multi-factor comprehensive quantitative paleogeographic map compilation method was proposed in the 1990s, through the compilation of large-scale quantitative paleogeographic maps, major breakthroughs have been made in oil and gas exploration and development in major petroleum basins in China. Single-factor analysis and multi-factor comprehensive mapping methods have been applied in crude clastic rock and carbonate rock oil and gas exploration. By compiling single-factor distribution maps that can reflect a c...

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Problems solved by technology

[0004] The embodiment of the present invention provides a method for compiling a quantitative paleogeographic map of black shale to solve the technical problem of low accuracy of the quantitative paleogeographic map of black shale in the prior art

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