辽西-冀北坳陷中-上元古界油源及成藏期分析-矿物岩石地球化学通报.PDF

# # Bu lletin of M ineralogy , Pet rology and Geoch emis t ry V ol. 25 No . 1, Jan. 2006 - - 欧光习, 李林强 , 100029 利用有机地球化学分析技术, 研究了辽西- 冀北坳陷中- 上元古 沥青油苗显示相对集中的地层( 雾迷山组铁岭 组和下马岭组) 油气的来源成熟程度与成藏期次研究表明, 区内中- 上元古 部分地层有机质丰度较高, 具备油气生成的物 质基础, 源岩多达到成熟- 高成熟的演化阶段, 是中- 上元古 油气的主要贡献者中- 上元古 储层中存在大量类型各异的油 气包裹体, 根据油气包裹体的产状与光学特征可以判定它们分属不同地质时期储层流体活动的产物, 指出中- 上元古 经历了 三到四期的油气成藏过程, 中晚期油气成藏意义较大 辽西- 冀北坳陷; 中- 上元古 ; 油源; 成藏期 P 618 . 130 . 1 A 1007- 2802( 2006) 0 1- 0087- 05 Study on the Origin and Accumulation Stage of Hydrocarbon Distributed in the Middle-Upper Proterozoic System in the Liaoxi- ibei Depression OU Gu ang- x i, L I L in- qiang Beij ing R esear ch I nstitute of Ur anium Geology , Beij ing 100029, China Abstract: Advanced analyt ical m et hods of organic geoch em ist ry are adop ted t o analyze th e source rock and accumu- lation st ages of hydrocarbon dist ribu ted in t he M iddle- Up per Proterozoic Wum ishan, T ieling and Xiam aling form a- t ions in th e Liaox-i Jibei Depression. T he result show s t hat th e part s of t he M iddle-U pper Proterozoic form ation s have high organic abundance w it h high h ydrocarbon m aturity . T hey are t he m ain sou rce rocks of th e inves tigat ed oil. T here are m any kinds of organ ic inclusion s dist ribu ted in th e M iddle- U pper Prot erozoic f orm at ions. T h e types, color s, fluorescen ce, distribut ion ch aracterist ics and h omogen izat ion temperatu res of fluid inclus ions are used to judge t he various form ing st ages. It is believed t hat t he