黄河口凹陷油气成藏的主控因素  

Major Control Factors of Petroleum Accumulation in Huanghekou Sag

作　　者：田立新[1,2] 余宏忠 周心怀 彭文绪 王玉静[3] 

机构地区：[1]中国石油大学油气资源与探测国家重点实验室,北京102249 [2]中海石油(中国)有限公司天津分公司,天津300452 [3]中海油能源发展股份有限公司采油工程研究院,天津300452

出　　处：《新疆石油地质》2009年第3期319-321,共3页Xinjiang Petroleum Geology

基　　金：国家自然科学重点基金项目(40238059);中海石油综合科研项目共同资助

摘　　要：黄河口凹陷是一个富生烃凹陷,目前已发现的油气藏及含油气构造大多具有埋深中浅层、原油密度中等、油质好、产能高等特点。纵向上发育多套含油层系,油气主要分布于新近系中。新近系油气成藏的主控因素为:近源、晚期快速成藏;浅水三角洲沉积体系为优质油气藏形成提供了空间;晚期走滑伴生断层是中央构造带油气富集的关键。Huanghekou sag is prolific hydrocarbon sag, in which discovered reservoirs and oil-gas bearing structures are most characterized by medium to shallow buried depth, medium density of crude, good oil quality and high productivity. Multiple sets of oil- bearing sequences are found in vertical direction, mainly distributed in Neogene system. The major control factors of petroleum accumulation in Neogene are as follows： 1） near the hydrocarbon source and rapid accumulation in late period; 2） shallow-water delta deposit system provides the reservoir spaces for fbrming premium reservoir, and 3） late strike-slip associated fault is the key of oil-gas enrichment in central structure zone in Huanghekou sag.

关 键 词：黄河口凹陷 油气分布 富集规律 晚期成藏 浅水三角洲 走滑伴生断层 

分 类 号：TE112[石油与天然气工程—油气勘探]