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The fatty acids in extractable bitumen and kero-gen of immature source rocks of the Liaohe Basin and Jiyang sag were investigated in this study. The result showed that the bitumen fatty acids were mainly associated with non-hydrocarbon fraction and that the kerogen fatty acids with some tightly bound fatty acids were mainly bounded in a net structure of kerogen by ester bonds. For the investigated source rocks, the fatty acids in bitumen, bound fatty acids and tightly bound acids in kerogen ranged in 0.01% -0.073 9%, 0.005%-0.045 5% and 0.005%-0.010% respec-lively. Among the fatty acids analyzed in this study, mono-carboxylic acids, α, ω-di-carboxylic acids and hydroxy acids accounted for 70%-100%, 0%-30% and <10% respectively. It was also found that the mono-carboxylic acids with longer chains mainly existed in bitumen, and that the a, ω-di-carboxylic acids and hydroxy acids mainly existed in kerogen. From above, it was assumed that the mono-carboxylic acids in bitumen might have played an important
The fatty acids in extractable bitumen and kero-gen of immature source rocks of the Liaohe Basin and Jiyang sag were investigated in this study. The result showed that the bitumen fatty acids were mainly associated with non-hydrocarbon fraction and that the kerogen fatty acids with some tightly bound fatty acids were mainly bounded in a net structure of kerogen by ester bonds. For the investigated source rocks, the fatty acids in bitumen, bound fatty acids and bound bound acids in kerogen ranged in 0.01% -0.073 9%, 0.005% -0.045 5% and 0.005% -0.010% respec-lively. Among the fatty acids analyzed in this study, mono-carboxylic acids, α, ω- di-carboxylic acids and hydroxy acids accounted for 70% -100%, 0% 30% and <10% respectively. It was also found that the mono-carboxylic acids with longer chains mainly existed in bitumen, and that the a, ω-di-carboxylic acids and hydroxy acids mainly existed in kerogen. From above, it was assumed that the mono-carboxylic acids in bitumen might have p layed an important