黄骅拗陷涧南潜山区含油气系统划分与勘探方向

根据黄骅拗陷涧南潜山区烃源岩特点及构造关系，本文将该区划分为两大含油气系统：北塘含油气系统和南堡含油气系统。北塘含油气系统成藏的关键时刻为东营组沉积末期，其主要生烃层位为下第三系沙三段，形成沙河街组自生自储型原生油气藏。南堡含油气系统成藏关键时刻为明化镇组下段沉积末期(2Ma)，其主要生烃层位为沙一段及东三段烃源岩，可形成东营组自生自储型原生油气藏和上第三系次生油气藏。经分析，该区涧西断层下降盘的西部构造隶属北塘含油气系统，所以应以沙三段为主要目的层进行预探；涧西断层上升盘的东部构造隶属南堡含油气系统，所以应以上第三系及东营组为主要目的层进行预探。

Division of oil/gas-bearing system of Jiannan buried-hill,Huanghua Depression and prospecting direction.

According to the characters of source rock and structural relation in Jiannan buried-hill area,Huanghua Depression,the paper divided the area into two oil/gas-bearing systems:Beitang oil/gas-bearing system and Nanpu oil/gas-bearing system.The key period of accumulation of Beitang oil/gas-bearing system is the latter of Ed,the main hydrocarbon-bearing interval is Paleogene Es 3,forming Es self-producing and self-reserving primary reservoir.The key period of accumulation of Nanpu oil/gas-bearing system mainly is the latter of Nm (2Ma),the main hydrocarbon-bearing interval is Es 1 and Ed 3 source rock,forming Ed self-producing and self-reserving primary reservoir and Teriary secondary reservoir.The west structures on the side of downthrow of Jianxi fault belong to Beitang oil/gas-bearing system after analysis,so the prospecting in this area is to take Es 3 interval as main target;The east structures on the side of upper side of Jianxi fault belong to Nanpu oil/gas-bearing system,so the prospecting in this area is to take Ed interval and Teriary system as main targets.