有机包裹体在碳酸盐岩油气源岩评价中的应用

Applications of Organic Inclusions to Carbonate-type Oil/gas Source Rocks

本文首次对我国西昌盆地、鄂尔多斯盆地及江油马角坝地区不同时代碳酸盐岩油气源岩研究表明，在油气源岩演化的各个阶段均可形成有机包裹体。有机包裹体是油气源岩中烃类物质的原始样品，它记载着油气源岩演化过程中所发生的所有事件及有关信息。在油气源岩评价中，有机包裹体的类型、特征、古温度、含量及组分等参数，结合其它研究结果，可有效地对油气源岩的演化程度、生油热历史、有机质热演化分区、油气资源量以及油气源岩性质和成因等进行综合研究和评价。实践证明该评价方法是可行的。

Based of the ersearch of carbonate-type oil/gas source rocks from lower Permain in Xichang Basin, lower Ordovician in Ordos Basin, and lower Carboniferous in Majiaoba,Jiangyou, the author in this paper finds that organic inclusions could be formed in dech stage of thethermal evolution of oil/gas source rocks. Organic inclusions are the primary samples for hydrocarbon matter in oil/gas source rocks, and thus embody all sorts of events and information associated with hydrocarbon matter occurring in the thermal evolution of carbonatetype oil or gas source rocks. Therefore, in the evolution of oil/gas souce rocks, theinclusion's types, characteristics, paleo-temperature, quantity,composition, and some other parameters will offer an effective approach towards the study of (1)the thermal evolutiondegree and matueity stage of oil/gas source rocks; (2) sedimentary basin paleo-tenperatureand the thermal evolution history of oil source rocks ;(3) the regional distribution and division of organic matter maturity in oil/gas rocks; (4) assessment of oil/gas resource abundance;and (5) the nature and origination of oil/gas source rocks.