东部凹陷沙三段天然气输导体系与运移方向  

Natural Gas Transmission System and Migration Direction of Sha 3 Member in Eastern Depression

作　　者：王群一[1] WANG Qun-yi(Liaohe Oilfield of CNPC,Panjin 124010,Liaoning,China)

机构地区：[1]中国石油辽河油田分公司,辽宁盘锦124010

出　　处：《承德石油高等专科学校学报》2023年第6期20-24,共5页Journal of Chengde Petroleum College

基　　金：辽河油田公司科技项目(辽河油田页岩油资源发现及地质工程一体化研究——中低成熟度页岩油分布特征及成藏机理研究):2021KJZX-01-01。

摘　　要：东部凹陷位于辽河探区东部,面积3300 km^(2),长约140 km,宽18~30 km,基底最大埋深7000 m,是一个相对发育较晚的凹陷,呈狭长不对称的双断“V”字型凹陷结构,斜坡基底坡度很大,古近系向上倾方向超覆很快,凹陷内多期火山活动强烈,规模较大,蕴藏着丰富的天然气资源,天然气总资源量为1435×10^(8)m^(3),气油资源量当量比为0.15,是辽河油田三个主要产油气凹陷中最高的。具有多套聚集天然气的目的层系,常规天然气储层类型以碎屑岩为主,此外,古潜山变质岩储层和火山岩储层也是重要勘探领域,深层气勘探以沙三期浊积砂体为重点,而泥页岩和煤层也是页岩气和煤层气的赋存体。Eastern Depression is located in the east of Liaohe exploration block,with an area of 3300 km^(2),a length of about 140 km,a width of 18~30 km,and a maximum buried depth of 7000 m.As a relatively late development sag,it has a long and narrow asymmetric double“V”type hollow structure and basal steep slopes,paleogene overlap upward tilt direction soon,multiphase and strong volcanic activities within the depression,and with a larger scale.The depression is rich in natural gas resources with a total resource of 1435×10^(8) m^(3),the gas-oil resource equivalent ratio is 0.15,which is the highest among three main oil-gas production depressions in Liaohe Oilfield.In addition,paleoburied hill metamorphic rock reservoir and volcanic rock reservoir are also important exploration areas.Deep gas exploration focuses on the third stage turbidite sand body,while mud shale and coal seam are also occurrence bodies of shale gas and coalbed methane.

关 键 词：东部凹陷 输导体系 成藏机理 运移方向 

分 类 号：P618.130.1[天文地球—矿床学]