渤南洼陷北部陡坡带砂砾岩扇体油气成藏规律  

Hydrocarbon accumulation law of conglomerate bodies on the northern steep slope in Bonan sub-sag

作　　者：刘雅利[1,2,3] 程付启[3] 庄嘉翠[3] 单体珍[3] 

机构地区：[1]中国科学院广州地球化学研究所,广东广州510640 [2]中国科学院研究生院,北京100049 [3]中国石化股份胜利油田分公司地质科学研究院,山东东营257015

出　　处：《油气地质与采收率》2010年第6期23-26,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家重大专项"渤海湾盆地精细勘探关键技术"(2008ZX05006)

摘　　要：渤南洼陷北部陡坡带普遍发育砂砾岩扇体,油气成藏复杂,形成多种类型的油藏,包括构造、地层和岩性等常规油藏,还发育连续型砂砾岩油藏。为有效地指导勘探,解剖了不同时期可容空间的变化和古地貌样式差异,这些差异造成砂砾岩体规模和储盖组合样式差异较大,控制了油藏类型、分布及规模。综合分析认为,中浅层扇体,尤其是宽缓斜坡型古地貌条件下中浅层扇体形成的油藏类型为地层超覆油藏,控制其成藏的主要因素为扇体自身物性、盖层及储盖组合条件和潜山侧向封堵条件;深层砂砾岩体形成非常规油藏———连续型砂砾岩油藏,控制成藏的主要因素为储层物性;油藏类型有序性分布,深层发育连续型砂砾岩油藏,中部层系发育地层超覆油藏、岩性油藏,浅层发育构造油藏。The steep slope of faulted basin paleogeomorphology types are complex,moreover,conglomerate bodies depositional scale and reser-voir composite types are much different,therefore,the dominate hydrocarbon reservoir type,distribution and scale are accordingly complicated.Mid-shallow conglomerate bodies,especially hydrocarbon reservoir types developed on the open slope paleogeomor-phology are stratigraphic overlapping hydrocarbon reservoir,and the physical property of the fan,capping,veservoir-capping combi-nation,burial hill lateral sealing conditions control the hydrocarbon accumulation.Deep conglomerate bodies form unconventional hydrocarbon reservoir-successive type conglomerate hydrocarbon reservoir,physical property of the reservoir is major control ele-ment;Hydrocarbon reservoir types distribute orderly,that is,deep zone develop successive type conglomerate hydrocarbon reser-voir,middle zone develop stratigraphic onlap hydrocarbon reservoir and lithologic hydrocarbon reservoir,shallow zone develop struc-tural hydrocarbon reservoir.

关 键 词：陡坡带 砂砾岩扇体 地层油藏 连续型砂砾岩油藏 油气成藏 渤南洼陷 

分 类 号：TE112.33[石油与天然气工程—油气勘探]