下寺湾油田龙咀沟地区三叠系长2油藏油气富集规律  

Hydrocarbon enrichment law of Triassic Chang 2 oil reservoir set in Longzuigou area of Xiasiwan Oilfield,Ordos Basin

作　　者：赵卫卫[1] 宋和平[2] 杨云祥[2] 李得路[1] 

机构地区：[1]西安石油大学地球科学与工程学院,陕西西安710065 [2]陕西延长石油(集团)延长油田股份有限公司下寺湾采油厂,陕西延安716105

出　　处：《岩性油气藏》2012年第6期43-48,共6页Lithologic Reservoirs

基　　金：国家自然科学基金项目“鄂尔多斯盆地延长组连续型岩性油藏成藏机理与地质特征”(编号:41102083)资助

摘　　要：基于大量钻井、测井、录井及试油资料,结合岩心观察和薄片鉴定,对下寺湾油田龙咀沟地区长2油藏的油气富集规律及主控因素进行了研究。结果表明:下寺湾油田长2油藏的形成和富集受沉积相带、优质储层、鼻状隆起背景、断裂、区域盖层、运移通道等因素的控制。其中,鼻状隆起部位油藏最为富集,裂缝等垂向运移通道对长2油藏的形成和分布具有重要控制作用。长2油藏类型复杂多样,除岩性油藏以外,构造-岩性油藏也是其主要类型。Based on the data of well drilling,well logging,geological log and production test,combined with the core observation and thin section analysis,the hydrocarbon enrichment law and its main controlling factors of Chang 2 oil reservoir set in Xiasiwan Oilfield of Ordos Basin were studied.The result shows that the formation and enrichment of Chang 2 oil reservoir set are controlled by sedimentary facies,high quality reservoirs,nose-shaped uplift,fault,areal cap rock and migration pathway in Xiasiwan Oilfield,among which the nose-shaped uplift is the most favorable place for hydrocarbon enrichment.As migration pathways,fractures have significant effects on the formation and distribution of Chang 2 oil reservoir set.Lithologic reservoir and structural-lithologic reservoir are the main types of the Chang 2 oil reservoir set.

关 键 词：油气富集规律 长2油藏 三叠系 下寺湾油田 鄂尔多斯盆地 

分 类 号：P618.13[天文地球—矿床学]