矿物流体包裹体分析及其在石油地质研究中的应用

由于矿物流体包裹体保留了大量的成矿流体成分和性质,特别是原生有机包裹体,对确定烃源岩的受热史、生烃史,推断油气运移及古地热场具有重要的作用,因而在石油地质研究中得到了广泛的应用．分析了渤海湾盆地古生界烃源岩中大量的矿物流体包裹体,研究了流体包裹体的形态、组成和相态,探讨了矿物包裹体与油气成因的关系．结果表明,渤海湾盆地存在三期古地热场,导致古生界烃源岩受热温度呈阶段性增加,从而引发有机质发生多次生烃演化．

Fluid Inclusion Analysis and Its Application in Petroleum Geological Study

The fluid inclusion, especially the organic one, plays an important role in determining the thermal history and hydrocarbon generation history of source rock and in deducing the migration of oil and gas because it has preserved much information about components and property of the inclusion itself. So it has been widely used in the study of petroleum geology. Shape, composition, and phase state of a large number of of fluid inclusions in Paleozoic source rocks of Bohai Bay Basin are analyzed, and the relationship between fluid inclusions and the origin of oil and gas are discussed. The results show that there are three periods of palaeo-geothermal fields in the Bohai Bay Basin, leding to a periodic increase of temperatures of the Paleozoic source rocks, leading to hydrocarbon generation and evolution for many times.