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松辽盆地南部深层系天然气成藏规律
张玉明 李明 李瑞磊
摘 要:松辽盆地南部深层系发育了既相互分割又有成因联系的断陷群,多具有生烃能力.以十屋、长岭断陷为例对松辽盆地南部深层系断陷群的天然气成藏规律进行分析,认为天然气成藏受控于烃源岩的分布与演化、大型构造带与沉积相带的配置关系及保存条件.深层系天然气的两期成藏,分别是登娄库期和嫩江期,晚期成藏是关键.中-高生烃强度区内的大型构造带对油气聚集成藏至关重要.大型构造带内的有利储集体和断裂控制了油气的局部富集;但由于缺乏邻近烃源岩的区域性盖层,保存条件不甚理想.烃源、构造、沉积、保存因素的互相配合可形成多种类型的复式油气聚集带.十屋断陷中央构造、东部秦家屯走滑构造、北部超覆尖灭复式油气聚集带及长岭断陷东部斜坡区东岭复式油气聚集带、中部低隆起复式油气聚集带是勘探的重点目标,长岭断陷西部陡坡区大型水下冲积扇是潜在的复式油气聚集带.
关键词:断陷;深部层系;天然气;成藏规律;松辽盆地南部
分类号:TE112.3 文献标识码:A
文章编号:0253-9985(2006)06-0841-08
Reservoiring pattern of natural gas in deep of southern Songliao basin
Zhang Yuming Li Ming Li Ruilei
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张玉明,(1961-),男,博士、教授级高级工程师,油气勘探开发
作者单位:张玉明(中国石油化工股份有限公司,东北分公司,吉林,长春,130062)
李明(中国石油化工股份有限公司,东北分公司,吉林,长春,130062)
李瑞磊(中国石油化工股份有限公司,东北分公司,吉林,长春,130062)
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