鄂尔多斯盆地富县地区延长组物源体系分析
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摘要
物源问题一度成为制约富县地区延长组油气勘探的焦点。作者充分利用了研究区的野外露头、钻孔资料和地震资料,系统分析了能够用于指示古物源方向的6种关键参数——实测古水流方向、砂体展布走向、极端暴露标志(煤)和覆水标志(油页岩)空间分布规律、重矿物组合分异特征、三角洲沉积体系前积结构(地震剖面)、鄂尔多斯盆地区域古构造—古地理特征等。综合研究表明,富县地区晚三叠世延长组的沉积物来自于盆地东北部,研究区不存在南部物源体系。
The oil and gas exploration of Yanchang Formation in Fuxian area has been constrained by the issue of sediment provenance.The authors make full use of the outcrop,borehole and seismic data of the study area to analysis the six kinds of key parameters indicating the direction of paleo-provenance-such as actual measured paleocurrent directions,sand distributed system directions,spatial distribution of extreme exposure signs(coal) and overlying water mark(oil shale),assemblages and distribution characteristics of heavy minerals,foreset structure of delta depositional system(seismic section),regional paleotectonic and paleogeographic characteristics of Ordos basin.Comprehensive studies show that the sediments of Yanchang Formation in Fuxian area come from the northeast of Ordos basin,and there is no provenance system from the south of the study area.
The oil and gas exploration of Yanchang Formation in Fuxian area has been constrained by the issue of sediment provenance.The authors make full use of the outcrop,borehole and seismic data of the study area to analysis the six kinds of key parameters indicating the direction of paleo-provenance-such as actual measured paleocurrent directions,sand distributed system directions,spatial distribution of extreme exposure signs(coal) and overlying water mark(oil shale),assemblages and distribution characteristics of heavy minerals,foreset structure of delta depositional system(seismic section),regional paleotectonic and paleogeographic characteristics of Ordos basin.Comprehensive studies show that the sediments of Yanchang Formation in Fuxian area come from the northeast of Ordos basin,and there is no provenance system from the south of the study area.
引文
1 Li Sitian,Yang Shigong,Tomasz Jerzykiewicz.Upper Triassic-Jurassicforeland sequences of the Ordos Basin in China stratigraphic evolutionof foreland Basins[J].SEPMSpecial Publication,1995,52:233-241
2焦养泉,李思田,卢宗盛,等.晚三叠世秦岭碰撞造山作用在鄂尔多斯盆地中的响应[C]∥李思田主编,中国东部及邻区中、新生代盆地演化及地球动力学背景[M].武汉:中国地质大学出版社,1997:87-102[Jiao Yangquan,Li Sitian,Lu Zongsheng,et al.Theresponse of Qinling orogenic collision of Late Triassic in the Ordos Ba-sin[C]∥Li Sitian.The Meso-Cenozoic basin evolution and geodynam-ic setting in Eastern China and adjacent areas.Wuhan:China Univer-sity of Geosciences Press,1997:87-102]
3 Jiao Yangquan,Lu Zongsheng,Zhuang Xinguo,et al.Dynamicprocess and genesis of Late Triassic sediment filling in Ordos Basin[J].Journal of China University of Geosciences,1997,8(1):45-48
4 Jiao Yangquan,Lu Zongsheng,Zhuang Xinguo,et al.Sedimentationresponse to Late Triassic Qinling collision in Ordos Basin[J].Beijing:30th IGC Abstracts,1996,1(3):342
5 Brian J D,Gregory AD,Zheng YD.Structural evolution of the south-western Daqing Shan,Yinshan belt,Inner Mongolia,China[J].Geo-logical Society of America,2001,Memoir 194:199-214
6宋凯,吕剑文,杜金良,等.鄂尔多斯盆地中部上三叠统延长组物源方向分析与三角洲沉积体系[J].古地理学报,2002,4(3):59-66[Song Kai,Lv Jianwen,Du Jinliang,et al.Source direction anal-ysis and delta depositional systems of Yanchang Formation of the upperTriassic in the central Ordos Basin[J].Journal of Palaeogeography,2002,4(3):59-66]
7何自新.鄂尔多斯盆地演化与油气[M].北京:石油工业出版社,2003:88-109[He Zixin.Ordos Basin Evolution and Its Oil and Gas[M].Beijing:Petroleum Industry Press,2003:88-109]
8吴志宇,赵虹,李文厚.安塞地区上三叠统延长组沉积体系研究[J].煤田地质与勘探,2005,33(6):13-16[Wu Zhiyu,ZhaoHong,Li Wenhou.Sedimentary system of Upper Triassic YanchangFormation in Ansai area[J].Coal Geology&Exploration,2005,33(6):13-16]
9杨华,田景春,王峰,等.鄂尔多斯盆地三叠纪延长组沉积期湖盆边界与底形及事件沉积[M].北京:地质出版社,2009:90-127[Yang Hua,Tian Jingchun,Wang Feng,et al.Lake Boundary andBedform and Event Deposits of the Triassic Yanchang Formation in Or-dos Basin[M].Beijing:Geological Publishing House,2009:90-127]
10谢渊.鄂尔多斯盆地富县探区上三叠统延长组层序地层与储层研究[D].成都理工大学,2002[Xie Yuan.Sequence Stratigraphyand Hydrocarbon Reservoirs of the Upper Triassic Yanchang Forma-tion in the Fuxian Prospect Area of the Ordos Basin[D].Chengdu U-niversity of Technology,2002]
11王桂成,马维民,赵虹,等.鄂尔多斯盆地富县探区三叠系延长组沉积特征[J].西北大学学报:自然科学版,2003,33(5):608-612[Wang Guicheng,Ma Weimin,Zhao Hong,et al.Depositionalfeature of Tertiary Yanchang Formation of Fuxian exploratory area inOrdos Basin[J].Journal of Northwest University:Natural Science E-dition,2003,33(5):608-612]
12谢渊,王剑,刘家铎,等.鄂尔多斯盆地东南部延长组湖盆致密砂岩储层层序地层与油气勘探[M].北京:地质出版社,2004:30-45[Xie Yuan,Wang Jian,Liu Jiaduo,et al.Tight Sandstone Se-quence Stratigraphy and Oil-Gas Exploration of Lake Basin of Yan-chang Formation in the Southeastern of Ordos Basin[M].Beijing:Geological Publishing House,2004:30-45]
13武富礼,李文厚,李玉宏,等.鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J].古地理学报,2004,8(3):307-315[Wu Fuli,Li Wenhou,Li Yuhong,et al.Delta sediments and evolution of theYanchang Formation of Upper Triassic in Ordos Basin[J].Journal ofPalaeogeography,2004,8(3):307-315]
14焦养泉,李思田,庄新国.前陆式盆地中的陡坡三角洲沉积体系——以鄂尔多斯盆地西南缘延长组中部为例[C]∥李思田主编.含能源盆地沉积体系——中国内陆和近海主要沉积体系类型的典型分析.武汉:中国地质大学出版社,1996:68-85[JiaoYangquan,Li Sitian,Zhuang Xinguo.Steep-slope delta system inforeland basin-base study on the middle part of Yanchang Formationin the southwestern margin of Ordos Basin[C]∥Li Sitian.Deposi-tional Systems in Energy-Resources-Bearing Basins:Case Studies ofthe Continental and Paralic Depositional Systems in China.Wuhan:China University of Geosciences Press,1996:68-85]
2焦养泉,李思田,卢宗盛,等.晚三叠世秦岭碰撞造山作用在鄂尔多斯盆地中的响应[C]∥李思田主编,中国东部及邻区中、新生代盆地演化及地球动力学背景[M].武汉:中国地质大学出版社,1997:87-102[Jiao Yangquan,Li Sitian,Lu Zongsheng,et al.Theresponse of Qinling orogenic collision of Late Triassic in the Ordos Ba-sin[C]∥Li Sitian.The Meso-Cenozoic basin evolution and geodynam-ic setting in Eastern China and adjacent areas.Wuhan:China Univer-sity of Geosciences Press,1997:87-102]
3 Jiao Yangquan,Lu Zongsheng,Zhuang Xinguo,et al.Dynamicprocess and genesis of Late Triassic sediment filling in Ordos Basin[J].Journal of China University of Geosciences,1997,8(1):45-48
4 Jiao Yangquan,Lu Zongsheng,Zhuang Xinguo,et al.Sedimentationresponse to Late Triassic Qinling collision in Ordos Basin[J].Beijing:30th IGC Abstracts,1996,1(3):342
5 Brian J D,Gregory AD,Zheng YD.Structural evolution of the south-western Daqing Shan,Yinshan belt,Inner Mongolia,China[J].Geo-logical Society of America,2001,Memoir 194:199-214
6宋凯,吕剑文,杜金良,等.鄂尔多斯盆地中部上三叠统延长组物源方向分析与三角洲沉积体系[J].古地理学报,2002,4(3):59-66[Song Kai,Lv Jianwen,Du Jinliang,et al.Source direction anal-ysis and delta depositional systems of Yanchang Formation of the upperTriassic in the central Ordos Basin[J].Journal of Palaeogeography,2002,4(3):59-66]
7何自新.鄂尔多斯盆地演化与油气[M].北京:石油工业出版社,2003:88-109[He Zixin.Ordos Basin Evolution and Its Oil and Gas[M].Beijing:Petroleum Industry Press,2003:88-109]
8吴志宇,赵虹,李文厚.安塞地区上三叠统延长组沉积体系研究[J].煤田地质与勘探,2005,33(6):13-16[Wu Zhiyu,ZhaoHong,Li Wenhou.Sedimentary system of Upper Triassic YanchangFormation in Ansai area[J].Coal Geology&Exploration,2005,33(6):13-16]
9杨华,田景春,王峰,等.鄂尔多斯盆地三叠纪延长组沉积期湖盆边界与底形及事件沉积[M].北京:地质出版社,2009:90-127[Yang Hua,Tian Jingchun,Wang Feng,et al.Lake Boundary andBedform and Event Deposits of the Triassic Yanchang Formation in Or-dos Basin[M].Beijing:Geological Publishing House,2009:90-127]
10谢渊.鄂尔多斯盆地富县探区上三叠统延长组层序地层与储层研究[D].成都理工大学,2002[Xie Yuan.Sequence Stratigraphyand Hydrocarbon Reservoirs of the Upper Triassic Yanchang Forma-tion in the Fuxian Prospect Area of the Ordos Basin[D].Chengdu U-niversity of Technology,2002]
11王桂成,马维民,赵虹,等.鄂尔多斯盆地富县探区三叠系延长组沉积特征[J].西北大学学报:自然科学版,2003,33(5):608-612[Wang Guicheng,Ma Weimin,Zhao Hong,et al.Depositionalfeature of Tertiary Yanchang Formation of Fuxian exploratory area inOrdos Basin[J].Journal of Northwest University:Natural Science E-dition,2003,33(5):608-612]
12谢渊,王剑,刘家铎,等.鄂尔多斯盆地东南部延长组湖盆致密砂岩储层层序地层与油气勘探[M].北京:地质出版社,2004:30-45[Xie Yuan,Wang Jian,Liu Jiaduo,et al.Tight Sandstone Se-quence Stratigraphy and Oil-Gas Exploration of Lake Basin of Yan-chang Formation in the Southeastern of Ordos Basin[M].Beijing:Geological Publishing House,2004:30-45]
13武富礼,李文厚,李玉宏,等.鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J].古地理学报,2004,8(3):307-315[Wu Fuli,Li Wenhou,Li Yuhong,et al.Delta sediments and evolution of theYanchang Formation of Upper Triassic in Ordos Basin[J].Journal ofPalaeogeography,2004,8(3):307-315]
14焦养泉,李思田,庄新国.前陆式盆地中的陡坡三角洲沉积体系——以鄂尔多斯盆地西南缘延长组中部为例[C]∥李思田主编.含能源盆地沉积体系——中国内陆和近海主要沉积体系类型的典型分析.武汉:中国地质大学出版社,1996:68-85[JiaoYangquan,Li Sitian,Zhuang Xinguo.Steep-slope delta system inforeland basin-base study on the middle part of Yanchang Formationin the southwestern margin of Ordos Basin[C]∥Li Sitian.Deposi-tional Systems in Energy-Resources-Bearing Basins:Case Studies ofthe Continental and Paralic Depositional Systems in China.Wuhan:China University of Geosciences Press,1996:68-85]
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