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Hydrocarbon source rock evaluation method and device

An evaluation method and technology for source rocks, applied in geophysical measurements, instruments, etc., can solve the problem of not considering the hydrocarbon expulsion conditions of source rocks

Inactive Publication Date: 2016-07-06
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

However, the limitation of this method is that it does not consider the hydrocarbon expulsion conditions of source rocks. Only when source rocks are saturated with the oil and gas that they can hold and have good transport conditions can they effectively expel oil and gas to form oil and gas reservoirs

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  • Hydrocarbon source rock evaluation method and device
  • Hydrocarbon source rock evaluation method and device

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0033]Because the inventors considered the limitations of the existing methods for evaluating source rocks, they proposed to use the hydrocarbon expulsion threshold theory to evaluate source rocks. Theoretical charts are used to evaluate source rocks. The main process of this evaluation method includes: first, to calculate the source rock index SRI. Secondly, the methane gas expulsion index, heavy hydrocarbon gas expulsion index and liquid hydrocarbon expulsion index of source rocks were calculated under the conditions of different organic parent material abundance, kerogen type index, and vit...

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Abstract

The invention provides a hydrocarbon source rock evaluation method and device. The hydrocarbon source rock evaluation method comprises steps of calculating the hydrocarbon generation quantity of the hydrocarbon source rock per cubic meter according to the organic matter abundance, the organic matter oil gas generation rate and the hydrocarbon source rock density, calculating the residual hydrocarbon critical saturation quantity of the hydrocarbon source rock per cubic meter according to the absorption residual gas quantity, the water soluble residual gas quantity, the oil soluble residual gas quantity and the residual liquid hydrocarbon quantity, calculating the hydrocarbon source rock index SRI according to the optimal hydrocarbon source rock hydrocarbon discharge quantity, the hydrocarbon generation quantity of the hydrocarbon source rock per cubic meter and the residual hydrocarbon critical saturation quantity, establishing a hydrocarbon source rock quantitative evaluation theory plate according to the hydrocarbon source rock index SRI, quantitatively evaluating the quality of the hydrocarbon source rock, calculating the hydrocarbon discharge property index KSRI of the hydrocarbon source rock according to the hydrocarbon rock source index SRI, and establishing a hydrocarbon source rock property determination theory plate according to the hydrocarbon source rock property index KSRI, and performing qualitative evaluation on the property of the hydrocarbon source rock. The technical scheme of the hydrocarbon source rock evaluation method and device improves the accuracy of evaluating the hydrocarbon source rock.

Description

technical field [0001] The invention relates to the technical field of hydrocarbon source rock evaluation, in particular to a method and device for evaluating hydrocarbon source rocks. Background technique [0002] After the source rocks are identified by various methods, their quality and properties need to be evaluated. The quality and scale of the source rocks determine the size of the oil and gas reservoirs, and the oil and gas properties of the source rocks determine its role in the oil and gas reservoirs. role in the process of reservoir formation. At present, the methods used to evaluate source rocks mainly include three categories: 1. Based on the size and composition characteristics of residual hydrocarbons in rocks; 2. Based on the size and composition characteristics of hydrocarbon generation in rocks; Abundance, type, transformation degree and other indicators. In the case that the hydrocarbon generation index and amount of hydrocarbon generation or residual hy...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V9/00
CPCG01V9/00
Inventor 庞雄奇牟甲文陈冬霞吕畅张郢
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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