Quantitative research method for hydrogen index of hydrocarbon-generating single component in coal-series hydrocarbon source rock

A technology of source rock and hydrogen index, which is applied in the field of quantitative research on hydrogen index of single component of hydrocarbon generation

Active Publication Date: 2022-02-18
PETROCHINA CO LTD
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Problems solved by technology

Therefore, limited by the separation technology of coal-measure microcomponents, it is impossible to quantitatively study the hydrocarbon-generating properties or hydrogen index of the same hydrocarbon-generating microcomponents in different lithologies.

Method used

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  • Quantitative research method for hydrogen index of hydrocarbon-generating single component in coal-series hydrocarbon source rock
  • Quantitative research method for hydrogen index of hydrocarbon-generating single component in coal-series hydrocarbon source rock
  • Quantitative research method for hydrogen index of hydrocarbon-generating single component in coal-series hydrocarbon source rock

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specific Embodiment approach

[0049] The Turpan-Hami Basin is the earliest oil-gas-bearing basin discovered in my country with coal-derived oil industry accumulation. The source rocks are mainly Jurassic coal-bearing deposits. The source rocks in the basin include coal, carbonaceous mudstone and coal measure mudstone. Studies have shown that source rocks of different lithologies have certain differences in the content, composition and rock pyrolysis parameters of the source rocks. Due to the above characteristics, it is necessary to conduct a comprehensive study on the differences in hydrocarbon generation of coal-measure source rocks of different lithologies. Traditional viewpoints and research methods can no longer explain the differences in hydrocarbon generation of microcomponents in source rocks of different lithologies and the characteristics of hydrocarbon generation evolution in this area. In the following, the present invention will be described in detail in combination with the research example...

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Abstract

The invention provides a quantitative research method for a hydrogen index of a hydrocarbon-generating single component in a coal-series hydrocarbon source rock. The method comprises the steps of (1) obtaining total rock maceral content data and rock pyrolysis analysis data of different lithologic source rocks in a research area; (2) according to the total rock maceral content and rock pyrolysis analysis data obtained in the step (1), establishing a multivariate fitting calculation model with the organic carbon content (TOC) and the pyrolysis hydrocarbon amount (S2) in a certain mature range of various maceral contents of different lithologic hydrocarbon source rocks; (3) quantitatively calculating contribution components of different single components to the organic carbon content (TOC) and the pyrolysis hydrocarbon amount (S2) according to the multivariate fitting calculation model obtained in the step (2); and (4) quantitatively calculating the hydrogen index of the hydrocarbon-generating component according to the calculation result of the step (3) and the definition of the hydrogen index.

Description

technical field [0001] The invention relates to the basic research fields of oil and gas geology and oil and gas geochemistry. Specifically, the invention relates to a method for quantitatively studying the hydrogen index of a hydrocarbon-generating single component in source rocks of different lithologies in coal measures. Background technique [0002] In my country's natural gas industry, coal-derived gas occupies a very important position. As the source rock of coal-derived gas, the evaluation of coal-measure source rocks also plays a pivotal role in the exploration and resource evaluation of coal-derived gas. [0003] It is well known that there are three different types of source rocks in coal measures, namely coal measure mudstone, carbonaceous mudstone and coal. Different types of coal-measure source rocks have certain differences in organic matter accumulation methods, depositional environments, biochemical processes, organic matter preservation conditions, and the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84G01N25/00
CPCG01N21/84G01N25/00
Inventor 马峰杨巍李红哲孙秀建白亚东周飞
Owner PETROCHINA CO LTD
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