鄂尔多斯盆地红河地区长8段沉积相与砂体展布
|
摘要
三叠系延长组长8段是鄂尔多斯盆地西南部主要产油层之一。前人根据露头、钻井资料的矿物成分和含量统计认为长8段为南西—北东走向的三角洲前缘分流河道沉积。以往通常是将有利的河道砂岩储层描述为南西—北东向延伸的直线状。但首次获得镇泾地区南部红河三维地震资料后,综合钻井资料得出了多种方向、形态的主河道砂体展布。结合区域长8段地层的展布、古构造和湖泊发育状况,认为红河三维地震区的长8段为辫状河—曲流河沉积,河道砂体宽厚比为1/500~1/1000,长8段河道呈南东、南北、近东西多种方向,优质储集体为心滩式纵坝砂体,漫滩及河道边部砂体物性较差。镇泾地区长8段湖相及三角洲相沉积不发育。
Member C8 of Triassic Yanchang Formation isan important oil production pay zone in the Southwestern Ordos Basin.Based on mineral elements and content from logging and outcrop data,earlier researchers considered its sandstone as deltaic distributary channel deposition flowing from southwest to northeast.So the sandstone distribution was mapped as linear and parallel deltaic distributary channels spreading in NE direction.But based on the interpretation of the newly acquired 3Dseismic and drilling data,sandbodies of the main channel were depicted with different shapes and different directions. Associated with Triassic paleostructrual and paleogeographic background of the basin,it is considered that the Member C8 belongs to a braided-meandering river system,flowing eastward in upstream,and branching radially in downstream.The width to thickness ratio of sandbodies ranges from 1/500 to 1/1000. Thicker sandstone reservoirs are constructed by amalgamated longitudinal bar. Toward the downstream channel sandstones become rare and thin.In the southwestern basin no lacustrine and deltaic facies occurred during Member C8 deposition.
Member C8 of Triassic Yanchang Formation isan important oil production pay zone in the Southwestern Ordos Basin.Based on mineral elements and content from logging and outcrop data,earlier researchers considered its sandstone as deltaic distributary channel deposition flowing from southwest to northeast.So the sandstone distribution was mapped as linear and parallel deltaic distributary channels spreading in NE direction.But based on the interpretation of the newly acquired 3Dseismic and drilling data,sandbodies of the main channel were depicted with different shapes and different directions. Associated with Triassic paleostructrual and paleogeographic background of the basin,it is considered that the Member C8 belongs to a braided-meandering river system,flowing eastward in upstream,and branching radially in downstream.The width to thickness ratio of sandbodies ranges from 1/500 to 1/1000. Thicker sandstone reservoirs are constructed by amalgamated longitudinal bar. Toward the downstream channel sandstones become rare and thin.In the southwestern basin no lacustrine and deltaic facies occurred during Member C8 deposition.
引文
[1]翟光明.中国石油地质志.北京:石油工业出版社,1996,65-83.
[2]张哨楠,胡江柰,沙文武等.鄂尔多斯盆地南部镇泾地区延长组的沉积特征.矿物岩石,2000,20(4):25-30.Zhang Shaonan,Hu Jiangnai,Sha Wenwu et al.The sedimentary characteristics of Yanchang Formation in Zhenyuan and Jingchuan districts,southern part of Ordos Basin.Journal of Mineralogy and Petrology,2000,20(4):25-30.
[3]王志坤,王多云,郑希民等.陕甘宁盆地陇东地区三叠系延长统长6—长8储层沉积特征及物性分析.天然气地球科学,2003,14(5):380-385.Wang Zhikun,Wang Duoyun,Zheng Ximin et al.Depositional characteristics and physical behavior analysis of the Chang6-8reservoir of Triassic Yanchang Formation in Longdong area,Shaan-Gan-Ning Basin.Natural Gas Geoscience,2003,14(5):380-385.
[4]郑希民,宋广寿,王多云等.陕甘宁盆地陇东地区长8油组厚层非均质砂体的沉积学解剖.沉积学报,2003,21(2):272-277.Zheng Ximin,Song Guangshou,Wang Duoyun et al.Sedimentary anatomy of thick anisotropic sandstones for Chang8Oil Formation in Longdong Area,ShaanGan-Ning Basin.Acta Sedimentologica Sinica,2003,21(2):272-277.
[5]付金华,郭正权,邓秀芹.鄂尔多斯盆地西南地区上三叠统延长组沉积相及石油地质意义.古地理学报,2005,7(1):34-44.Fu Jinhua,Guo Zhengquan,Deng Xiuqin.Sedimentary facies of the Yanchang Formation of Upper Triassic and petroleum geological implication in southwestern Ordos Basin.Journal of Palaeogeography,2005,7(1):34-44.
[6]杨斌虎,白海强,戴亚权等.鄂尔多斯盆地庆阳地区晚三叠世延长期长8沉积期物源与沉积体系研究.古地理学报,2008,10(3):251-259.Yang Binhu,Bai Haiqiang,Dai Yaquan et al.Provenance and depositional system during the depositional period of interval 8of Upper Triassic Yanchang Formation in Qingyang area,Ordos Basin.Journal of Palaeogeography,2008,10(3):251-259.
[7]邓秀芹,李文厚,刘新社等.鄂尔多斯盆地中三叠统与上三叠统地层界线讨论.地质学报,2009,83(8):1089-1096.Deng Xiuqin,Li Wenhou,Liu Xinshe et al.Discussion on the Stratigraphic boundary between middle triassic and upper triassic.Acta Geologica Sinica,2009,83(8):1089-1096.
[8]刘化清,李相博,完颜容等.鄂尔多斯盆地长8油层组古地理环境与沉积特征.沉积学报,2011,29(6):1086-1095.Liu Huaqing,Li Xiangbo,Wan Yanrong et al.Palaeogeographic and sedimentological characteristics of the Triassic Chang 8,Ordos Basin,China.Acta Sedi-mentologica Sinica,2011,29(6):1086-1095.
[9]罗静兰,李忠兴,史成恩等.鄂尔多斯盆地西南部上三叠统延长组长8、长6油层组的沉积体系与物源方向.地质通报,2008,27(1):101-111.Luo Jinglan,Li Zhongxing,Shi Cheng’en et al.Depositional systems and provenance directions for the Chang 6and Chang 8reservoir groups of the Upper Triassic Yanchang Formation in the southwestern Ordos basin,China.Geological Bulletin of China,2008,27(1):101-111.
[10]罗静兰,史成恩,李博等.鄂尔多斯盆地周缘及西峰地区延长组长8、长6沉积物源——来自岩石地球化学的证据.中国科学D辑:地球科学,2007,37(增刊Ⅰ):62-72.Luo Jinglan,Shi Cheng’en,Li Bo et al.Provenance for the Chang 6and Chang 8 Member of the Yanchang Formation in the Xifeng area and in the periphery Ordos Basin:Evidence from petrologic geochemistry.Science in China Series D:Earth Sciences,2007,37(SⅠ):62-72.
[11]赵宏波.鄂尔多斯盆地天环坳陷中南段长6-长8物源分析.石油化工应用,2011,30(7):59-62.Zhao Hongbo.Sediment source analysis in Ordos basin Chang 6-Chang 8 sediments of sourth middle Tianhuan sag.Petrochemical Industry Application,2011,30(7):59-62.
[12]郑莉,冀连胜,何展翔等.鄂尔多斯盆地西缘黄土塬区综合物探技术的应用效果.石油地球物理勘探,2008,43(2):229-232.Zheng Li,Ji Liansheng,He Zhanxiang et al.Application of integrated geophysical technique in loess plateau of western margin of Ordos Basin.OGP,2008,43(2):229-232.
[13]于相海,刘明乾,汪铁望等.鄂尔多斯盆地黄土塬区弯宽线地震资料处理.石油地球物理勘探,2010,45(增刊1):80-85.Yu Xianghai,Liu Mingqian,Wang Tiewang et al.Seismic data processing for crooked wide line from Loess Plateau area,Ordos Basin.OGP,2010,45(S1):80-85.
[14]窦伟坦,杜玉斌,于波等.鄂尔多斯盆地姬塬地区非纵三维地震勘探采集技术.石油地球物理勘探,2011,46(6):844-850.Dou Weitan,Du Yubin,Yu Bo et al.Off-line 3D seismic acquisition in Jiyuan,Ordos Basin.OGP,2011,46(6):844-850.
[15]张文正,杨华,付琐堂等.鄂尔多斯盆地长91湖湘优质烃源岩的发育机制探讨.中国科学D辑:地球科学,2007,37(增刊Ⅱ):33-38.Zhang Wenzheng,Yang Hua,Fu Suotang et al.On the development mechanism of the lacustrine highgrade hydrocarbon source rocks of Chang 91member in Ordos Basin.Science in China Series D:Earth Sciences,2007,37(SⅡ):33-38.
[16]张文正,杨华,李善鹏等.鄂尔多斯盆地长91湖湘优质烃源岩成藏意义.石油勘探与开发,2008,35(3):557-562.Zhang Wenzheng,Yang Hua,Li Shanpeng et al.Hydrocarbon accumulation significance of Chang 91high-quality lacustrine source rocks of Yanchang Formation,Ordos Basin.Petroleum Exploration and Development,2008,35(3):557-562.
[17]刘化清,李相博,陈启林等.鄂尔多斯盆地延长组若干石油地质问题分析.北京:科学出版社,2013,84-98.
[18]Maill A D.A review of the braided-river depositional environment.Earth-Science Review,1979,13(1):1-62.
[19]蒲仁海,郭向东,钟红利.古代富泥低弯度河的识别与特征.西北大学学报(自然科学版),2009,39(4):624-630.Pu Renhai,Guo Xiangdong,Zhong Hongli.Identification and characteristics of ancient mud-rich low-sinuosity rivers.Journal of Northwest University(Natural Science Edition),2009,39(4):624-630.
[20]刘志武,周立发,白斌等.鄂尔多斯盆地西南缘印支期沉积特征及物源.西北大学学报(自然科学版),2006,32(2):270-274.Liu Zhiwu,Zhou Lifa,Bai Bin et al.Sedimentary characteristics and provenance analysis of Indo-Chinese epoch in the southwest edge of Ordos Basin.Journal of Northwest University(Natural Science Edition),2006,32(2):270-274.
[21]魏斌,魏红红,陈全红等.鄂尔多斯盆地上三叠统延长组物源分析.西北大学学报(自然科学版),2003,33(4):447-450.Wei Bin,Wei Honghong,Chen Quanhong et al.Sediment provenance analysis of Yanchang Formation in Ordos Basin.Journal of Northwest University(Natural Science Edition),2003,33(4):447-450.
[22]Brown A R.Interpretation of Three Dimensional Seismic Data.AAPG Memoir 42,Fifth edition,1999,97-146.
[23]侯伯刚,杨池银,武站国等.地震属性及其在储层预测中的影响因素.石油地球物理勘探,2004,39(5):553-558,574.Hou Bogang,Yang Chiyin,Wu Zhanguo et al.Seismic attributes and their affected factors in reservoir prediction.OGP,2004,39(5):553-558,574.
[24]Pu Renhai,Zhu Li,Zhong Hongli.3-D seismic identification and characterization of ancient channel morphology.Journal of Earth Science,2009,20(5):858-867.
[25]Galloway W E,Hobday D K.Terrigenous classtic deposional system-application to petroleum,coal,and uranium exploration.Springer-Verlag,New York,1983,22-70.
[2]张哨楠,胡江柰,沙文武等.鄂尔多斯盆地南部镇泾地区延长组的沉积特征.矿物岩石,2000,20(4):25-30.Zhang Shaonan,Hu Jiangnai,Sha Wenwu et al.The sedimentary characteristics of Yanchang Formation in Zhenyuan and Jingchuan districts,southern part of Ordos Basin.Journal of Mineralogy and Petrology,2000,20(4):25-30.
[3]王志坤,王多云,郑希民等.陕甘宁盆地陇东地区三叠系延长统长6—长8储层沉积特征及物性分析.天然气地球科学,2003,14(5):380-385.Wang Zhikun,Wang Duoyun,Zheng Ximin et al.Depositional characteristics and physical behavior analysis of the Chang6-8reservoir of Triassic Yanchang Formation in Longdong area,Shaan-Gan-Ning Basin.Natural Gas Geoscience,2003,14(5):380-385.
[4]郑希民,宋广寿,王多云等.陕甘宁盆地陇东地区长8油组厚层非均质砂体的沉积学解剖.沉积学报,2003,21(2):272-277.Zheng Ximin,Song Guangshou,Wang Duoyun et al.Sedimentary anatomy of thick anisotropic sandstones for Chang8Oil Formation in Longdong Area,ShaanGan-Ning Basin.Acta Sedimentologica Sinica,2003,21(2):272-277.
[5]付金华,郭正权,邓秀芹.鄂尔多斯盆地西南地区上三叠统延长组沉积相及石油地质意义.古地理学报,2005,7(1):34-44.Fu Jinhua,Guo Zhengquan,Deng Xiuqin.Sedimentary facies of the Yanchang Formation of Upper Triassic and petroleum geological implication in southwestern Ordos Basin.Journal of Palaeogeography,2005,7(1):34-44.
[6]杨斌虎,白海强,戴亚权等.鄂尔多斯盆地庆阳地区晚三叠世延长期长8沉积期物源与沉积体系研究.古地理学报,2008,10(3):251-259.Yang Binhu,Bai Haiqiang,Dai Yaquan et al.Provenance and depositional system during the depositional period of interval 8of Upper Triassic Yanchang Formation in Qingyang area,Ordos Basin.Journal of Palaeogeography,2008,10(3):251-259.
[7]邓秀芹,李文厚,刘新社等.鄂尔多斯盆地中三叠统与上三叠统地层界线讨论.地质学报,2009,83(8):1089-1096.Deng Xiuqin,Li Wenhou,Liu Xinshe et al.Discussion on the Stratigraphic boundary between middle triassic and upper triassic.Acta Geologica Sinica,2009,83(8):1089-1096.
[8]刘化清,李相博,完颜容等.鄂尔多斯盆地长8油层组古地理环境与沉积特征.沉积学报,2011,29(6):1086-1095.Liu Huaqing,Li Xiangbo,Wan Yanrong et al.Palaeogeographic and sedimentological characteristics of the Triassic Chang 8,Ordos Basin,China.Acta Sedi-mentologica Sinica,2011,29(6):1086-1095.
[9]罗静兰,李忠兴,史成恩等.鄂尔多斯盆地西南部上三叠统延长组长8、长6油层组的沉积体系与物源方向.地质通报,2008,27(1):101-111.Luo Jinglan,Li Zhongxing,Shi Cheng’en et al.Depositional systems and provenance directions for the Chang 6and Chang 8reservoir groups of the Upper Triassic Yanchang Formation in the southwestern Ordos basin,China.Geological Bulletin of China,2008,27(1):101-111.
[10]罗静兰,史成恩,李博等.鄂尔多斯盆地周缘及西峰地区延长组长8、长6沉积物源——来自岩石地球化学的证据.中国科学D辑:地球科学,2007,37(增刊Ⅰ):62-72.Luo Jinglan,Shi Cheng’en,Li Bo et al.Provenance for the Chang 6and Chang 8 Member of the Yanchang Formation in the Xifeng area and in the periphery Ordos Basin:Evidence from petrologic geochemistry.Science in China Series D:Earth Sciences,2007,37(SⅠ):62-72.
[11]赵宏波.鄂尔多斯盆地天环坳陷中南段长6-长8物源分析.石油化工应用,2011,30(7):59-62.Zhao Hongbo.Sediment source analysis in Ordos basin Chang 6-Chang 8 sediments of sourth middle Tianhuan sag.Petrochemical Industry Application,2011,30(7):59-62.
[12]郑莉,冀连胜,何展翔等.鄂尔多斯盆地西缘黄土塬区综合物探技术的应用效果.石油地球物理勘探,2008,43(2):229-232.Zheng Li,Ji Liansheng,He Zhanxiang et al.Application of integrated geophysical technique in loess plateau of western margin of Ordos Basin.OGP,2008,43(2):229-232.
[13]于相海,刘明乾,汪铁望等.鄂尔多斯盆地黄土塬区弯宽线地震资料处理.石油地球物理勘探,2010,45(增刊1):80-85.Yu Xianghai,Liu Mingqian,Wang Tiewang et al.Seismic data processing for crooked wide line from Loess Plateau area,Ordos Basin.OGP,2010,45(S1):80-85.
[14]窦伟坦,杜玉斌,于波等.鄂尔多斯盆地姬塬地区非纵三维地震勘探采集技术.石油地球物理勘探,2011,46(6):844-850.Dou Weitan,Du Yubin,Yu Bo et al.Off-line 3D seismic acquisition in Jiyuan,Ordos Basin.OGP,2011,46(6):844-850.
[15]张文正,杨华,付琐堂等.鄂尔多斯盆地长91湖湘优质烃源岩的发育机制探讨.中国科学D辑:地球科学,2007,37(增刊Ⅱ):33-38.Zhang Wenzheng,Yang Hua,Fu Suotang et al.On the development mechanism of the lacustrine highgrade hydrocarbon source rocks of Chang 91member in Ordos Basin.Science in China Series D:Earth Sciences,2007,37(SⅡ):33-38.
[16]张文正,杨华,李善鹏等.鄂尔多斯盆地长91湖湘优质烃源岩成藏意义.石油勘探与开发,2008,35(3):557-562.Zhang Wenzheng,Yang Hua,Li Shanpeng et al.Hydrocarbon accumulation significance of Chang 91high-quality lacustrine source rocks of Yanchang Formation,Ordos Basin.Petroleum Exploration and Development,2008,35(3):557-562.
[17]刘化清,李相博,陈启林等.鄂尔多斯盆地延长组若干石油地质问题分析.北京:科学出版社,2013,84-98.
[18]Maill A D.A review of the braided-river depositional environment.Earth-Science Review,1979,13(1):1-62.
[19]蒲仁海,郭向东,钟红利.古代富泥低弯度河的识别与特征.西北大学学报(自然科学版),2009,39(4):624-630.Pu Renhai,Guo Xiangdong,Zhong Hongli.Identification and characteristics of ancient mud-rich low-sinuosity rivers.Journal of Northwest University(Natural Science Edition),2009,39(4):624-630.
[20]刘志武,周立发,白斌等.鄂尔多斯盆地西南缘印支期沉积特征及物源.西北大学学报(自然科学版),2006,32(2):270-274.Liu Zhiwu,Zhou Lifa,Bai Bin et al.Sedimentary characteristics and provenance analysis of Indo-Chinese epoch in the southwest edge of Ordos Basin.Journal of Northwest University(Natural Science Edition),2006,32(2):270-274.
[21]魏斌,魏红红,陈全红等.鄂尔多斯盆地上三叠统延长组物源分析.西北大学学报(自然科学版),2003,33(4):447-450.Wei Bin,Wei Honghong,Chen Quanhong et al.Sediment provenance analysis of Yanchang Formation in Ordos Basin.Journal of Northwest University(Natural Science Edition),2003,33(4):447-450.
[22]Brown A R.Interpretation of Three Dimensional Seismic Data.AAPG Memoir 42,Fifth edition,1999,97-146.
[23]侯伯刚,杨池银,武站国等.地震属性及其在储层预测中的影响因素.石油地球物理勘探,2004,39(5):553-558,574.Hou Bogang,Yang Chiyin,Wu Zhanguo et al.Seismic attributes and their affected factors in reservoir prediction.OGP,2004,39(5):553-558,574.
[24]Pu Renhai,Zhu Li,Zhong Hongli.3-D seismic identification and characterization of ancient channel morphology.Journal of Earth Science,2009,20(5):858-867.
[25]Galloway W E,Hobday D K.Terrigenous classtic deposional system-application to petroleum,coal,and uranium exploration.Springer-Verlag,New York,1983,22-70.
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