南堡凹陷拾场次凹地层岩性圈闭识别与分布规律探讨
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摘要
南堡凹陷拾场次凹内大于1km2的构造圈闭都已钻探,寻找地层岩性圈闭必将成为今后的重点勘探领域。本文融会了层序地层学、构造学和沉积学的相关理论对拾场次凹进行精细的构造、沉积综合解释。提出了柏各庄断层下降盘为间断性(活动性)沉降下降盘,西南庄断层下降盘为持续性(稳定性)沉降下降盘的观点,指出了活动性下降盘的地层岩性圈闭发育程度和油气成藏规模均优于(大于)稳定性下降盘,是油气勘探的主要方向;首次把拾场次凹划分为7个不同类型的地层岩性圈闭发育带;理清了该区地层岩性圈闭勘探的思路,为该区的地层岩性圈闭勘探提供了决策依据。
It is difficult to find more structure traps bigger than 1 km2 in Shichang sub-sag.So finding litho-stratal traps may be the focus of exploration in the future.Combining with the theory of stratigraphy,structure geology and sedimentolgy,through delicate structure and generalized depositional interpretation,we put forward in this paper a new observation that the downthrow side of Baigezhuang fault is intermittently subsided,and the counterpart of Xinanzhuang fault is continuously subsided.We also point out a rule that more litho-stratal traps develop in the active downthrow side than the stable one and the oil pool scale is larger in the former one.So it is the favorable petroleum exploration zone.In this article,we divide Shichang sub-depression into seven different types of litho-stratal traps development area for the first time.This will provide help for the litho-stratal traps exploration.
It is difficult to find more structure traps bigger than 1 km2 in Shichang sub-sag.So finding litho-stratal traps may be the focus of exploration in the future.Combining with the theory of stratigraphy,structure geology and sedimentolgy,through delicate structure and generalized depositional interpretation,we put forward in this paper a new observation that the downthrow side of Baigezhuang fault is intermittently subsided,and the counterpart of Xinanzhuang fault is continuously subsided.We also point out a rule that more litho-stratal traps develop in the active downthrow side than the stable one and the oil pool scale is larger in the former one.So it is the favorable petroleum exploration zone.In this article,we divide Shichang sub-depression into seven different types of litho-stratal traps development area for the first time.This will provide help for the litho-stratal traps exploration.
引文
[1]周海民,谢占安等.断陷盆地精细地震勘探实践.北京:石油工业出版社,2007
[2]纪学武,夏义平,康南昌等.岩性地层圈闭识别工作步骤及配套技术.石油地球物理勘探,2008,43(1):101～106Ji Xue-wu,Xia Yi-ping,Kang Nan-chang et al.Worksteps identifying lithostratigraphic traps and associatedtechniques.OGP,2008,43(1):101～106
[3]佩顿C E编[美]等译;牛毓荃,徐怀大等校.地震地层学(在油气勘探中的应用).北京:石油工业出版社,1980
[4]牛嘉玉侯启军,祝永军等.岩性和地层油气藏地质与勘探.北京:石油工业出版社,2007
[5]卢刚臣,石慧敏,刘轶英等.成熟区岩性油气藏勘探再认识.石油地球物理勘探,2006,41(4):468～475Lu Gang-chen,Shi Hui-min,Liu Yi-ying et al.Re-knowing about exploration of lithologic oil/gas reser-voir in maturing field.OGP,2006,41(4):468～475
[2]纪学武,夏义平,康南昌等.岩性地层圈闭识别工作步骤及配套技术.石油地球物理勘探,2008,43(1):101～106Ji Xue-wu,Xia Yi-ping,Kang Nan-chang et al.Worksteps identifying lithostratigraphic traps and associatedtechniques.OGP,2008,43(1):101～106
[3]佩顿C E编[美]等译;牛毓荃,徐怀大等校.地震地层学(在油气勘探中的应用).北京:石油工业出版社,1980
[4]牛嘉玉侯启军,祝永军等.岩性和地层油气藏地质与勘探.北京:石油工业出版社,2007
[5]卢刚臣,石慧敏,刘轶英等.成熟区岩性油气藏勘探再认识.石油地球物理勘探,2006,41(4):468～475Lu Gang-chen,Shi Hui-min,Liu Yi-ying et al.Re-knowing about exploration of lithologic oil/gas reser-voir in maturing field.OGP,2006,41(4):468～475
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