南堡滩海油气成藏主控因素研究

Controlling factors of hydrocarbon accumulation in Nanpu beach

范柏江 刘成林 庞雄奇 张 健

中国石油大学（北京）油气资源与探测国家重点实验室，北京 102249 中国石油大学（北京）盆地与油藏研究中心，北京 102249 冀东油田分公司，河北 唐山 063200

State Key Laboratory of Petroleum and Resourcse Prospecting, China University of Petroleum, Beijing 102249, China Research Center of Basin and Reservoir, China University of Petroleum, Beijing 102249, China Jidong Oilfield Company, PetroChina, Tangshan 063200, China

利用实测镜质体反射率、包裹体分析、岩心观察、镜下判别、断裂研究等手段，研究南堡滩海油气富集的根本原因。结果表明：东营期受火山活动的影响，沙三段主力烃源岩发生大规模生排烃过程；受郯卢断裂带右旋－伸展活动的影响，前古近系灰岩构造裂缝发育，为油气提供了充足的储集空间；受凹陷内下部开启、上部封闭性质断裂的影响，来自沙一段与东三段的油气发生纵向运移并在中浅层聚集。由此可判断，前古近系古潜山油气藏、沙一段透镜体油气藏、东营与馆陶组断层相关类油气藏为重点勘探目标。

This paper uses various analyses, such as vitrinite reflectance, inclusion analysis, core observation, electronic microscope photos and fault reserach, to study the mechanism of hydrocarbon enrichment in Nanpu beach. The result shows that the major Es3 source rock generated a large scale of hydrocarbon generation-expulsion process in Dongying period under the control of the volcanic activities. The tectonic fractures of pre-Paleogene limestone, induced by the rotate right-extension activity of Tanlu fault zone, provide enough spaces for hydrocarbon accumulation. The hydrocarbon which generated from the Es1 and Ed3 reservoirs vertically migrated into the middle-shallow layers under the control of faults with bottom-open and up-close characteristics within depression. Then, it can be concluded that the buried hill reservoir of pre-Paleogene, lenticular reservoir of Es1, and the similar reservoirs related to the faults of Dongying Formation and Guantao Formation can be regarded as major exploration targets.