页岩油资源评价关键参数——含油率的校正

doi:10.11743/ogg20160103

Abstract

Abstract: Pyrolysis parameter S₁ (content of free hydrocarbon) and chloroform-extractable bitumen "A" are often used to reflect oil content during shale oil resource assessment.However,due to inherent flaws of experimental procedures,laboratory-measured S₁ values fail to truthfully record the loss of light (bitumen "A" only) and heavy hydrocarbons and the measured bitumen "A" values cannot truthfully record the loss of light hydrocarbons.In order to be more accurate in quantitative assessment of oil shale resources,we performed correlation of these parameters to mend up the losses based on analyses of hydrocarbon genesis kinetics of organic matter and comparison of the parameters before and after extraction experiments on samples from mudstone/shale of the Qingshankou Formation in Songliao Basin.The results show that the correlated average S₁ and bitumen "A" are 4.2 and 1.2 times higher than the measured average ones,respectively.The S₁ equals to bitumen "A" after correction,while the former is only 0.28 times the value of the latter before correction.This indicates the necessity of correction to the two parameters in the resource assessment.

Key words: light hydrocarbon correction, heavy hydrocarbon correction, oil content, shale oil, northern Songliao Basin

CLC Number:

TE155

Xue Haitao, Tian Shansi, Wang Weiming, Zhang Wenhua, Du Tiantian, Mu Guodong. Correction of oil content-one key parameter in shale oil resource assessment[J]. Oil & Gas Geology, 2016, 37(1): 15-22.

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Correction of oil content-one key parameter in shale oil resource assessment

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