长岭断陷长深6井区深层天然气成藏规律  

Formation laws of deep natural gas reservoir in Changshen 6 well zone in Changling Fault Sag

作　　者：逯瑞敬[1] 薛海涛[1] 孙源[1] 卢双舫[1] 宋立忠[2] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]吉林油田分公司勘探开发研究院,吉林松原138000

出　　处：《大庆石油学院学报》2010年第6期26-31,共6页Journal of Daqing Petroleum Institute

基　　金：国家油气重大专项(2008ZX05004-003);国家自然科学基金项目(40972101);国家"973"重点基础研究项目(2009CB219306)

摘　　要：为研究长岭断陷深层天然气藏分布规律,利用长深6井和长深1井的天然气资料对天然气藏类型进行划分,应用热史和沉积埋藏史计算本地区的生烃史;根据成藏期次对成藏过程进行解剖,分析长深6井区成藏的主控因素.结果表明:长深6井区上部登娄库组的碎屑岩储层为混合气藏,下部营城组的火山岩储层为CO2气藏;烃类气在泉头组沉积末期成藏,CO2在喜山期充注成藏;断层、盖层、火山活动是成藏的主控因素,尤其是营城组盖层在历史时期的有效性和断层的封闭型,是导致长深6井区营城组为CO2气藏、长深6井区登娄库组和长深1井区营城组为CO2气和烃类气混合气藏的关键性因素.In order to study formation laws of deep natural gas reservoir in Changling Fault Sag,the data of components of natural gas of Changshen 6 well and Chagnshen 1 well are used to classify the type of gas reservoirs,thermal evolution history and sedimentary burial history are used to calculate hydrocarbon generating history,and reservoir forming process is analyzed on the basis of reservoir forming periods.On this basis,main control factors of reservoir forming of Changshen 6 well zone are analyzed.The result shows that clastic rock reservoirs of Denglouku formation in upper Changshen 6 well area is gas mixed reservoir,volcanic rock reservoirs of Yingcheng formation in lower Changshen 6 well zone is CO2 reservoir;hydrocarbons gas accumulations in the end of Quantou formation sedimentation,CO2 accumulations in Himalayan stage;fault,cap-rock and volcanism are main control factors of reservoir formation,especially availability of cap rock of Yingcheng formation in historical period and closure of fault is the critical factor that Yingcheng formation in Changshen 6 well zone is CO2 reservoir,but Denglouku formation in Changshen 6 well zone and Yingcheng formation in Changshen 1 well zone are CO2 and hydrocarbons gas mixed reservoirs.

关 键 词：长岭断陷 气藏类型 成藏期次 断层 成藏主控因素 

分 类 号：TE122.2[石油与天然气工程—油气勘探]