辽西凹陷北洼沙河街组沉积层序结构与有利砂体分布
|
摘要
综合地震、测井及岩心等资料表明,辽西凹陷北洼古近系沙河街组存在完整的地层序列,其可划分为5个三级层序.沙一段和沙二段之间不存在不整合层序界面;SQs3-1(沙三上段)在相对隆起区遭受剥蚀,但在坳陷带内发育完整.沙河街组发育的主要沉积体系包括扇三角洲、辫状河三角洲、近岸水下扇、滨浅湖滩坝等,其分布受到了同沉积断裂、次级古隆起、古坳陷分布的制约.研究区内有利的储集体包括分布于古隆起边缘低位体系域的砂体、洼陷中部的深水重力流砂体、古隆起高部位的碳酸盐岩等.它们与下部沙三段发育的大套暗色泥岩及上覆的沙一段泥质层可形成良好的生储盖组合,并在古隆起边缘、次级洼陷带、断裂坡折带及缓坡边缘形成岩性地层圈闭.
The existence of a complete stratigraphic sequence in Paleogene Shahejie Formation in northern Liaoxi depression is confirmed and five sequences are identified in this paper by comprehensive analysis of seismic profiles,well logs and cores data.It is found that there is not any unconformity surface between Member 1and Member 2of Shahejie Formation,so they form the highstand system tract and lowstand-transgressive system tract of the sequence respectively.SQs3-1(the upper submember of Member 3)is nearly denudated in uplift area and widely distributed in the depression zone.All kinds of sedimentary facies have been recognized in the study area,including the fan delta system,braided delta system,nearshore subaqueous fan system and beach-bar system.The sedimentary system distribution is controlled by syndepositional fault,paleo-uplift and depression.The favorable sand bodies in the study area consist of those developed in the lowstand system tract at the edge of the paleouplift,deep water gravity flow sand in the center of the sub-sag and carbonate in the upper part of the paleouplift.With the underlying massive dark mudstone and shale in the third sequence of Shahejie Formation and the overlying pelolithic layer of the first sequence of Shahejie Formation,they can form good reservoir-cap assemblages and form litho-stratigraphic traps in the uplift,sub-sag,fault slope break and the gentle slope belt.
The existence of a complete stratigraphic sequence in Paleogene Shahejie Formation in northern Liaoxi depression is confirmed and five sequences are identified in this paper by comprehensive analysis of seismic profiles,well logs and cores data.It is found that there is not any unconformity surface between Member 1and Member 2of Shahejie Formation,so they form the highstand system tract and lowstand-transgressive system tract of the sequence respectively.SQs3-1(the upper submember of Member 3)is nearly denudated in uplift area and widely distributed in the depression zone.All kinds of sedimentary facies have been recognized in the study area,including the fan delta system,braided delta system,nearshore subaqueous fan system and beach-bar system.The sedimentary system distribution is controlled by syndepositional fault,paleo-uplift and depression.The favorable sand bodies in the study area consist of those developed in the lowstand system tract at the edge of the paleouplift,deep water gravity flow sand in the center of the sub-sag and carbonate in the upper part of the paleouplift.With the underlying massive dark mudstone and shale in the third sequence of Shahejie Formation and the overlying pelolithic layer of the first sequence of Shahejie Formation,they can form good reservoir-cap assemblages and form litho-stratigraphic traps in the uplift,sub-sag,fault slope break and the gentle slope belt.
引文
Ayhan,I.,Nemec,W.,2005.Early Miocene Lacustrine Deposits and Sequence Stratigraphy of the Ermenek Basin,Central Taurides,Turkey.Sedimentary Geology,173(1-4):233-275.doi:10.1016/j.sedgeo.2003.07.007
Catuneanu,O.,Abreu,V.,Bhattacharya,J.P.,et al.,2009.Towards the Standardization of Sequence Stratigraphy.Earth-Science Reviews,92(1-2):1-33.doi:10.1016/j.earscirev.2008.10.003
Catuneanu,O.,Heredia,E.,Ortega,V.,et al.,2003.SeismicStratigraphy of the Neogene Sequences in the Gulf ofMexico.AAPG Annual Convention,12:27-28.
Feng,Y.L.,Zhou,H.M.,Ren,J.Y.,et al.,2010.PaleogeneSequence Stratigraphy in the East of the Bohai Bay Basin and Its Response to Structural Movement.Science inChina(Series D),40(10):1356-1376(in Chinese).
Li,D.J.,Zhu,X.M.,Dong,Y.L.,et al.,2007.SequenceStratigraphy and Depositional System of Paleogene Shahejie Formation in Liaodong Bay Depression.PetroleumExploration and Development,34(6):669-676(inChinese with English abstract).
Li,J.P.,Liu,S.L.,Gong,Y.J.,et al.,2012.A Paleomagnetic Column of Oligocene Chronostratigraphy and ItsGeological Significance in Bohai Water.China OffshoreOil and Gas,24(Suppl.1):29-33,42(in Chinese withEnglish abstract).
Lin,C.S.,Liu,J.Y.,Liu,L.J.,et al.,2002.High Resolution Sequence Stratigraphy Analysis:Construction ofChronostratigraphic Sequence Framework on Facies andReservoir Scale.Geoscience,16(3):276-281(in Chinese with English abstract).
Lin,C.S.,Liu,J.Y.,Zhang,Y.Z.,et al.,2005.SequenceStratigraphy and Tectono-stratigraphic Analysis of Tectonically Active Basins:A Case Study on the CenozoicMesozoic Lacustrine Basins in China.Earth ScienceFrontiers,12(4):365-374(in Chinese with Englishabstract).
Tian,L.X.,Xu,C.G.,Jiang,S.K.,2011.Hydrocarbon Accumulation Conditions and Process of Jinzhou 25-1Large-Scale Light Gas-Oil Field in Liaodong Bay.Journal of China University of Petroleum(Natural Science Edition),35(4):47-52(in Chinese with Englishabstract).
Xu,C.G.,2012.The Practice and Effects of Secondary Exploration Guided by the Geological Innovation in Offshore Oil-Bearing Areas:A Case of the Northern Liaodong Bay.China Offshore Oil and Gas,24(Suppl.1):1-6(in Chinese with English abstract).
Xu,C.G.,Xu,X.S.,Qiu,D.Z.,et al.,2005.Structural andSequence Stratigraphic Frameworks and Palaeogeography of the Paleogene in Central-Southern Liaoxi Sag,Liaodongwan Bay Area.Journal of Palaeogeography,7(4):449-459(in Chinese with English abstract).
Xu,C.G.,Yu,S.,Lin,C.S.,et al.,2008.Structural Stylesof the Paleogene Lacustrine Basin Margin and TheirControl on Sedimentary Sequences in Bohai Sea Area.Journal of Palaeogeography,10(6):627-635(inChinese with English abstract).
Yuan,B.,Chen,S.Y.,Yuan,W.F.,2008.The Establishment of the Hierarchical Framework of Shahejie Formation,Huanxiling Area in Liaoxi Sag.Jounral of Southwest Petroleum University(Science&Technology Edition),30(2):27-30,34(in Chinese with English abstract).
Zhou,X.H.,Yu,Y.X.,Wei,G.,et al.,2008.Relationshipbetween JZ25-1STransfer Zone and Hydrocarbon Accumulation in Liaodongwan Offshore of Bohai Bay Basin.Acta Petrolei Sinica,29(6):837-840(in Chinesewith English abstract).
Zhu,X.M.,Dong,Y.L.,Yang,J.S.,et al.,2008.The Sequence Stratigraphic Framework and Depositional System Distribution of Paleogene in Liaodong Bay Area.Science in China(Series D),38(Suppl.1):1-10(inChinese).
冯有良,周海民,任建业,等,2010.渤海湾盆地东部古近系层序地层及其对构造活动的响应.中国科学(D辑),4(10):1356-1376.
李德江,朱筱敏,董艳蕾,等,2007.辽东湾坳陷古近系沙河街组层序地层分析.石油勘探与开发,34(6):669-676.
李建平,刘士磊,龚莹杰,等,2012.渤海海域渐新统古地磁年代地层柱的建立及其地质意义.中国海上油气,24(增刊1):29-33,42.
林畅松,刘景彦,刘丽军,等,2002.高精度层序地层分析:建立沉积相和储层规模的等时地层格架.现代地质,16(3):276-281.
林畅松,刘景彦,张英志,等,2005.构造活动盆地的层序地层与构造地层分析———以中国中、新生代构造活动湖盆分析为例.地学前缘,12(4):365-374.
田立新,徐长贵,江尚昆,2011.辽东湾地区锦州25-1大型轻质油气田成藏条件与成藏过程.中国石油大学学报(自然科学版),35(4):47-52.
徐长贵,2012.以地质认识创新为主导的海上油区二次勘探实践与成效:以辽东湾北部地区为例.中国海上油气,24(增刊1):1-6.
徐长贵,许效松,丘东洲,等,2005.辽东湾地区辽西凹陷中南部古近系构造格架与层序地层格架及古地理分析.古地理学报,7(4):449-459.
徐长贵,于水,林畅松,等,2008.渤海海域古近系湖盆边缘构造样式及其对沉积层序的控制作用.古地理学报,10(6):627-635.
袁波,陈世悦,袁文芳,等,2008.辽西凹陷欢喜岭地区沙河街组层序格架的建立.西南石油大学学报(自然科学版),30(2):27-30,34.
周心怀,余一欣,魏刚,等,2008.渤海辽东湾海域JZ25-1S转换带与油气成藏的关系.石油学报,29(6):837-840.
朱筱敏,董艳蕾,杨俊生,等,2008.辽东湾地区古近系层序地层格架与沉积体系分布.中国科学(D辑),38(增刊1):1-10.
Catuneanu,O.,Abreu,V.,Bhattacharya,J.P.,et al.,2009.Towards the Standardization of Sequence Stratigraphy.Earth-Science Reviews,92(1-2):1-33.doi:10.1016/j.earscirev.2008.10.003
Catuneanu,O.,Heredia,E.,Ortega,V.,et al.,2003.SeismicStratigraphy of the Neogene Sequences in the Gulf ofMexico.AAPG Annual Convention,12:27-28.
Feng,Y.L.,Zhou,H.M.,Ren,J.Y.,et al.,2010.PaleogeneSequence Stratigraphy in the East of the Bohai Bay Basin and Its Response to Structural Movement.Science inChina(Series D),40(10):1356-1376(in Chinese).
Li,D.J.,Zhu,X.M.,Dong,Y.L.,et al.,2007.SequenceStratigraphy and Depositional System of Paleogene Shahejie Formation in Liaodong Bay Depression.PetroleumExploration and Development,34(6):669-676(inChinese with English abstract).
Li,J.P.,Liu,S.L.,Gong,Y.J.,et al.,2012.A Paleomagnetic Column of Oligocene Chronostratigraphy and ItsGeological Significance in Bohai Water.China OffshoreOil and Gas,24(Suppl.1):29-33,42(in Chinese withEnglish abstract).
Lin,C.S.,Liu,J.Y.,Liu,L.J.,et al.,2002.High Resolution Sequence Stratigraphy Analysis:Construction ofChronostratigraphic Sequence Framework on Facies andReservoir Scale.Geoscience,16(3):276-281(in Chinese with English abstract).
Lin,C.S.,Liu,J.Y.,Zhang,Y.Z.,et al.,2005.SequenceStratigraphy and Tectono-stratigraphic Analysis of Tectonically Active Basins:A Case Study on the CenozoicMesozoic Lacustrine Basins in China.Earth ScienceFrontiers,12(4):365-374(in Chinese with Englishabstract).
Tian,L.X.,Xu,C.G.,Jiang,S.K.,2011.Hydrocarbon Accumulation Conditions and Process of Jinzhou 25-1Large-Scale Light Gas-Oil Field in Liaodong Bay.Journal of China University of Petroleum(Natural Science Edition),35(4):47-52(in Chinese with Englishabstract).
Xu,C.G.,2012.The Practice and Effects of Secondary Exploration Guided by the Geological Innovation in Offshore Oil-Bearing Areas:A Case of the Northern Liaodong Bay.China Offshore Oil and Gas,24(Suppl.1):1-6(in Chinese with English abstract).
Xu,C.G.,Xu,X.S.,Qiu,D.Z.,et al.,2005.Structural andSequence Stratigraphic Frameworks and Palaeogeography of the Paleogene in Central-Southern Liaoxi Sag,Liaodongwan Bay Area.Journal of Palaeogeography,7(4):449-459(in Chinese with English abstract).
Xu,C.G.,Yu,S.,Lin,C.S.,et al.,2008.Structural Stylesof the Paleogene Lacustrine Basin Margin and TheirControl on Sedimentary Sequences in Bohai Sea Area.Journal of Palaeogeography,10(6):627-635(inChinese with English abstract).
Yuan,B.,Chen,S.Y.,Yuan,W.F.,2008.The Establishment of the Hierarchical Framework of Shahejie Formation,Huanxiling Area in Liaoxi Sag.Jounral of Southwest Petroleum University(Science&Technology Edition),30(2):27-30,34(in Chinese with English abstract).
Zhou,X.H.,Yu,Y.X.,Wei,G.,et al.,2008.Relationshipbetween JZ25-1STransfer Zone and Hydrocarbon Accumulation in Liaodongwan Offshore of Bohai Bay Basin.Acta Petrolei Sinica,29(6):837-840(in Chinesewith English abstract).
Zhu,X.M.,Dong,Y.L.,Yang,J.S.,et al.,2008.The Sequence Stratigraphic Framework and Depositional System Distribution of Paleogene in Liaodong Bay Area.Science in China(Series D),38(Suppl.1):1-10(inChinese).
冯有良,周海民,任建业,等,2010.渤海湾盆地东部古近系层序地层及其对构造活动的响应.中国科学(D辑),4(10):1356-1376.
李德江,朱筱敏,董艳蕾,等,2007.辽东湾坳陷古近系沙河街组层序地层分析.石油勘探与开发,34(6):669-676.
李建平,刘士磊,龚莹杰,等,2012.渤海海域渐新统古地磁年代地层柱的建立及其地质意义.中国海上油气,24(增刊1):29-33,42.
林畅松,刘景彦,刘丽军,等,2002.高精度层序地层分析:建立沉积相和储层规模的等时地层格架.现代地质,16(3):276-281.
林畅松,刘景彦,张英志,等,2005.构造活动盆地的层序地层与构造地层分析———以中国中、新生代构造活动湖盆分析为例.地学前缘,12(4):365-374.
田立新,徐长贵,江尚昆,2011.辽东湾地区锦州25-1大型轻质油气田成藏条件与成藏过程.中国石油大学学报(自然科学版),35(4):47-52.
徐长贵,2012.以地质认识创新为主导的海上油区二次勘探实践与成效:以辽东湾北部地区为例.中国海上油气,24(增刊1):1-6.
徐长贵,许效松,丘东洲,等,2005.辽东湾地区辽西凹陷中南部古近系构造格架与层序地层格架及古地理分析.古地理学报,7(4):449-459.
徐长贵,于水,林畅松,等,2008.渤海海域古近系湖盆边缘构造样式及其对沉积层序的控制作用.古地理学报,10(6):627-635.
袁波,陈世悦,袁文芳,等,2008.辽西凹陷欢喜岭地区沙河街组层序格架的建立.西南石油大学学报(自然科学版),30(2):27-30,34.
周心怀,余一欣,魏刚,等,2008.渤海辽东湾海域JZ25-1S转换带与油气成藏的关系.石油学报,29(6):837-840.
朱筱敏,董艳蕾,杨俊生,等,2008.辽东湾地区古近系层序地层格架与沉积体系分布.中国科学(D辑),38(增刊1):1-10.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心