渤海湾盆地南堡凹陷高尚堡地区油源对比及高蜡油成因  

Correlation of oils and source rocks and genesis of high wax oils in Gaoshangpu area, Nanpu Sag, Bohai Bay Basin

作　　者：刁帆 王建伟[3] 陈晓娜[4] 王政军 张永超[3] DIAO Fan;WANG Jianwei;CHEN Xiaona;WANG Zhengjun;ZHANG Yongchao(Jiangxi Engineering Laboratory on Radioactive Geoscience and Big Data Technology,East China University of Technology,Nanchang,Jiangxi 330013,China;School of Information Engineering,East China University of Technology,Nanchang,Jiangxi 330013,China;Research Institute of Petroleum Exploration and Development,Jidong Oilfield Company,PetroChina,Tangshan,Hebei 063004,China;Pucheng Oil Production Plant,Zhongyuan Oilfield Company,SINOPEC,Puyang,Henan 457532,China)

机构地区：[1]东华理工大学江西省放射性地学大数据技术工程实验室,南昌330013 [2]东华理工大学信息工程学院,南昌330013 [3]中国石油冀东油田勘探开发研究院,河北唐山063004 [4]中国石化中原油田濮城采油厂地质研究所,河南濮阳457000

出　　处：《石油实验地质》2020年第1期117-125,共9页Petroleum Geology & Experiment

基　　金：国家科技重大专项“渤海湾盆地精细勘探关键技术”(三期)子课题“南堡凹陷油气富集规律与增储领域”(2016ZX05006-006)资助

摘　　要：渤海湾盆地黄骅坳陷南堡凹陷高尚堡地区高柳断层两侧原油物性和富集层位差异明显。高柳断层以北,原油主要富集于沙河街组三段,普遍具有高蜡特征;高柳断层以南,原油主要富集于明化镇组、馆陶组和东营组,含蜡量相对较低,为正常原油。应用生物标志物和单体烃碳同位素分析不同层系原油来源。沙三段高蜡油来源不同于高柳断层以南正常原油,前者主要来自沙河街组三段四亚段(Es3^4)烃源岩,后者主要来自高柳断层以南林雀次洼东营组三段烃源岩。Es3^4烃源岩具有高等植物和低等水生生物双重输入的特征,为深层高蜡原油提供了蜡质来源。微生物对有机质的改造、烃源岩较低的热演化程度和沙三段普遍发育异常高压,是高蜡油生成、运移和保存的关键因素。There are significant differences between crude oil properties and enrichment horizon across the Gaoliu Fault in the Gaoshangpu area of the Nanpu Sag.Oils are mainly enriched in the third member of Shahejie Formation(Es3)to the north of the Gaoliu Fault,and are characterized by a high wax content.However,oils are mainly enriched in the Minghuazhen,Guantao and Dongying formations to the south of the Gaoliu Fault,and are normal crude oils with a low wax content.The biomarkers and compound specific isotopes of crude oils from different layers show that the origin of the high wax content oils in the Es3 is different from that of the oils to the south of the Gaoliu Fault.The former is derived from the source rocks of the Es3^4and the latter is sourced from the third member of the Dongying Formation(Ed3)in the Linque Sub-Sag to the south of the Gaoliu Fault.The source rocks of the Es3^4contain abundant terrigenous higher plants and lower hydrobionts,which provide the wax source.The microbe reformation,low thermal evolution degree and abnormal high pressure in the Es3 are key factors in the formation,migration and preservation of high wax oils.

关 键 词：高蜡油 油源对比 生物标志物 单体烃碳同位素 南堡凹陷 渤海湾盆地 

分 类 号：TE122.1[石油与天然气工程—油气勘探]