舞阳凹陷核桃园组核二段砂体沉积模式分析
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摘要
综合地震、钻井与砂体物源定量示踪分析,认为舞阳凹陷核桃园组核二段沉积时期砂体呈现出极不对称分布。针对这种特殊的砂体分布模式,结合区域地质背景及盐岩发育规律,建立了舞阳凹陷核二段的沉积模式:舞阳凹陷核二段处于断层活动高峰期,东北部地层抬升致使北部物源通道受阻,打破了核三段南北物源均衡供给的模式,表现出南部辫状河三角洲砂体规模大且向凹陷中心延伸较远,北部扇三角洲砂体规模小且顺北部边界断裂发育的沉积特点。
Based on seismology,drilling and provenance quantita-tive tracing,we presented an extremely asymmetric sand-body distribution of the second member of Hetaoyuan forma-tion in Wuyang depression.Aiming at this special distribu-tion model of sand body,we integrated the regional geolog-ical setting and the development discipline of salt rock,and established the deposition model of the second member of Hetaoyuan formation in Wuyang depression as follows.In The northern boundary fault acted intensively during the deposition of the second member of Hetaoyuan formation,The relevant raising of northern provenance resulted in the barrier of northern source and therefore breaking the balance between southern and northern source during the deposition of the third member.The sandbody scale of braided riverdelta in the south was large and slope advanced relatively far,but the sandbody scale of fan delta near the northern was small and distributed locally along the boundary fault.
Based on seismology,drilling and provenance quantita-tive tracing,we presented an extremely asymmetric sand-body distribution of the second member of Hetaoyuan forma-tion in Wuyang depression.Aiming at this special distribu-tion model of sand body,we integrated the regional geolog-ical setting and the development discipline of salt rock,and established the deposition model of the second member of Hetaoyuan formation in Wuyang depression as follows.In The northern boundary fault acted intensively during the deposition of the second member of Hetaoyuan formation,The relevant raising of northern provenance resulted in the barrier of northern source and therefore breaking the balance between southern and northern source during the deposition of the third member.The sandbody scale of braided riverdelta in the south was large and slope advanced relatively far,but the sandbody scale of fan delta near the northern was small and distributed locally along the boundary fault.
引文
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[8]陈建强,刘忠孝,蒲春志,等.南阳凹陷核桃园组沉积演化对油气聚集的控制作用[J].石油天然气学报,2005,27(5):548-550
[9]马庆元.舞阳凹陷含盐地质特征[J].中国煤田地质,1993,5(3):32-34
[10]付代国,梁文生,罗家群,等.南阳凹陷核桃园组沉降特征与构造演化关系研究[J].石油地质与工程,2008,22(4):4-6
[2]郭巧珍,杨香华,詹冶萍,等.用锆石阴极发光与U-P测年资料分析核桃园组物源[J].新疆石油地质,2009,30(6):686-688
[3]赵全民,刘喜林,范传军,等.舞阳、襄城盐湖盆地未熟-低熟油成藏模式[J].地质科技情报,2002,21(4):23-26
[4]范传军,马骧.舞阳凹陷核桃园组盐湖相烃源岩生油潜力研究[J].江汉石油职工大学学报,2005,18(6):3-5
[5]陈发亮,陈业全,魏生祥,等.东濮凹陷盐湖盆地油气富集规律研究[J].盐湖研究,2003,11(4):33-38
[6]李春荣,陈开远,柳保军,等.盐湖盆地沉积与油气形成的关系[J].西部探矿工程,2004,96(5):46-48
[7]贾中铁,陈建强.核桃园组沉积演化对油气聚集的控制作用[J].胜利油田职工大学学报,2005,19(4):49-50
[8]陈建强,刘忠孝,蒲春志,等.南阳凹陷核桃园组沉积演化对油气聚集的控制作用[J].石油天然气学报,2005,27(5):548-550
[9]马庆元.舞阳凹陷含盐地质特征[J].中国煤田地质,1993,5(3):32-34
[10]付代国,梁文生,罗家群,等.南阳凹陷核桃园组沉降特征与构造演化关系研究[J].石油地质与工程,2008,22(4):4-6
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