东道海子地区储层孔隙烃和包裹体烃对比及油源分析  

Comparative Study of Pore Hydrocarbon with Inclusion Hydrocarbon and Oil-Source Relation Analysis of Reservoir in Dongdaohaizi Area

作　　者：白小娜 罗小平[1] 刘茂鹏 幸思翰 

机构地区：[1]成都理工大学油气藏地质及开发工程国家重点实验室,四川成都610059 [2]重庆科技学院石油与天然气工程学院,重庆401331

出　　处：《西安石油大学学报（自然科学版）》2017年第3期9-18,共10页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家自然科学基金"川西凹陷上三叠统须家河组储层水岩相互作用机理研究"(编号:41172119)

摘　　要：通过分析东道海子地区储层孔隙烃和孔隙烃的生物标志化合物特征来研究区内目标储层烃类来源,分离提取研究区内6口共12个储层分析样中的孔隙烃和包裹体烃,从气相色谱分析(GC)、气相色谱-质谱联用分析(GC-MS)入手,对比孔隙烃和包裹体烃的生物标志化合物特征及区域内3套烃源岩的生物标志化合物分布特征,结果表明:两者的生物标志化合物特征具有显著区别,包裹体烃较孔隙烃内部一致性更好,体现在:正构烷烃的分布上更为完整,Pr/Ph比值更低,甾烷和萜烷的发育程度更高等方面;推测包裹体烃多与二叠系烃源岩有关;孔隙烃多与二叠系和侏罗系烃源岩混源有关。储层烃类的来源分类可为进一步勘探提供一定的地质依据。The features of the biomarkers of the pore hydrocarbon and inclusion hydrocarbon were comparatively studied in order to de- termine the hydrocarbon sources of the reservoir in Dongdaohaizi area. The pore hydrocarbon and inclusion hydrocarbon are separated from 12 sandstone samples of 6 wells in the study area, and the features of their biomarkers and the distribution characteristics of the bi- omarkers of three sets of hydrocarbon source rocks in the study area are compared and analyzed by GC analysis and GC-MS analysis. The results show that, there is significant difference between the biomarkers of pore hydrocarbon and inclusion hydrocarbon：the hydro- carbon in inclusions has better consistency than that in pores, the distribution of its n-alkanes is more complete, its Pr / Ph ratio is low- er, and its steranes and terpanes is more mature. It is held that the inclusion hydrocarbon may be related to Permian hydrocarbon source rocks ; the pore hydrocarbon may be related to Jurassic and Permian source rocks. The analysis of reservoir hydrocarbon sources can pro- vide certain geological basis for the further exploration of the study area.

关 键 词：孔隙烃 包裹体烃 生物标志物 油源对比 东道海子凹陷 

分 类 号：TE122.1[石油与天然气工程—油气勘探]