Generating method of quantitative evaluation chart of petroleum spatial distribution under the constraints of source-reservoir configuration

Abstract

The invention provides a petroleum spatial distribution quantitative evaluation chart generation method under reservoir configuration constraint. The method comprises the steps: collecting different types of hydrocarbon source rock samples sequentially according to thermal evolution degree, abundance of organic matter, lithology and organic matter type; carrying out the thermal simulation experiment of the collected samples, quantifying discharged oil and retention oil at each temperature point, employing the organic carbon analysis of residue, Rock-Eval detection, and vitrinite reflectance analysis; drawing an oil discharge rate chart of different types of hydrocarbon source rocks; selecting geological sections of different basins as actual geological samples; densely collecting the hydrocarbon source rocks and storage layer rock core samples and carrying out organic carbon analysis, Rock-Eval detection, vitrinite reflectance analysis and chloroform bitumen quantitative analysis on actual geological sections; drawing an oil discharge rate parameter curve of an actual geological sample; and obtaining the petroleum spatial distribution quantitative evaluation chart generation method under reservoir configuration constraint according to the oil discharge rate charts of different types of hydrocarbon source rocks and the oil discharge rate parameter curve of the actual geological sample.

Description

technical field [0001] The invention relates to a method for generating quantitative evaluation charts for the spatial distribution of oil in the process of hydrocarbon generation and expulsion evolution of source rocks under different geological backgrounds in petroleum geological research. The utility model relates to a quantitative evaluation chart of retained oil volume and migration volume, which belongs to the technical field of petroleum exploration. Background technique [0002] The simulation experiment of hydrocarbon generation and expulsion is an important method to evaluate the ability of source rocks to generate and expel hydrocarbons, and then evaluate the resource potential of the study area. Different scholars have carried out a lot of research work on different types of oil and gas-bearing basins or areas. The research work mainly includes the following two aspects : [0003] Hydrocarbon generation and expulsion research of a type of source rock carried out...

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Problems solved by technology

In the above techniques, there are few external factors that affect the oil drainage effect of source rocks, such as the contact relationship with the reservoir and the characteristics of the channeling layer.

[0005] In short, the existing research work is mainly aimed at simulating a specific source rock in a specific research area, and there are many hydrocarbon generation and expulsion experiments, and the source rock characteristics (type, lithology) are relatively single; Due to the influence of differences in source rocks, the problem of hydrocarbon generation and expulsion in accordance with underground geological conditions such as different source-reservoir configurations has not been solved, resulting in deviations in evaluation results, which cannot meet the evaluation and prediction of hydrocarbon generation and expulsion of different types of source rocks

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