鄂尔多斯盆地富县地区上三叠统长6段砂体展布规律研究
|
摘要
本文以钻井岩心、测井和地震等资料为基础,对鄂尔多斯盆地富县地区延长组长6段进行了高分辨率层序地层研究。基准面旋回结构类型分析揭示了从研究区的东北至西南,具有A1型→A2型→B1型→B2型→C型的分布模式;以中期旋回为等时对比单元,建立了富县地区长6段的高分辨率层序格架,将长6段划分为一个长期旋回层序、4个中期旋回层序(MSC1、MSC2、MSC3和MSC4)和若干个短期及超短期旋回层序;按中期旋回编制的层序-岩相古地理图揭示出MSC1期和MSC3期为三角洲的高度建设期,发育大型的进积型三角洲水下分流河道砂体(A1型或A2型)和较大规模的湖底扇砂体(A2型),是研究区最有利的勘探目标。总之,层序格架内的砂体对比及层序岩相古地理揭示的鄂尔多斯盆地陕北斜坡油气富集带东南部的富县探区的砂体展布规律,对该地区的石油勘探部署具有重要的指导意义。
Based on a study of core,logging and seismic data,this paper studied characteristics of high-resolution sequence stratigraphy of Chang-6 Subsection of Yanchang Formation.The authors found that from northeast to southwest,the distribution model of base-level cycle varies in order of typeA1→typeA2→typeB1→typeB2→typeC or typeA2,and recognized one long-term and four medium-term cyclic sequences(MSC1,MSC2,MSC3 and MSC4).A high-resolution sequence stratigraphic framework of medium-term cyclic sequences was established.With the medium-term cyclic sequences as mapping units,four sequence-based lithofacies and paleogeography were drawn which show that the delta was mainly developed during the MSC1 stage and MSC3 stage.The sand bodies were mainly developed at the same time.It is found that sand bodies were mainly developed in the subaquatic distributary channels of prograding deltas whose base-level cycle was of type A1 and type A2,and the sand bodies were also developed in the alluvial fan whose base-level cycle type was type A2.Consequently,the distribution regularity of sand bodies revealed by sequence-based lithofacies and paleogeography has an important guiding significance for the petroleum exploration in the prospecting area of Fuxian located in the southeast hydrocarbon-enriched belt of Shanbei slope,Ordos Basin.
Based on a study of core,logging and seismic data,this paper studied characteristics of high-resolution sequence stratigraphy of Chang-6 Subsection of Yanchang Formation.The authors found that from northeast to southwest,the distribution model of base-level cycle varies in order of typeA1→typeA2→typeB1→typeB2→typeC or typeA2,and recognized one long-term and four medium-term cyclic sequences(MSC1,MSC2,MSC3 and MSC4).A high-resolution sequence stratigraphic framework of medium-term cyclic sequences was established.With the medium-term cyclic sequences as mapping units,four sequence-based lithofacies and paleogeography were drawn which show that the delta was mainly developed during the MSC1 stage and MSC3 stage.The sand bodies were mainly developed at the same time.It is found that sand bodies were mainly developed in the subaquatic distributary channels of prograding deltas whose base-level cycle was of type A1 and type A2,and the sand bodies were also developed in the alluvial fan whose base-level cycle type was type A2.Consequently,the distribution regularity of sand bodies revealed by sequence-based lithofacies and paleogeography has an important guiding significance for the petroleum exploration in the prospecting area of Fuxian located in the southeast hydrocarbon-enriched belt of Shanbei slope,Ordos Basin.
引文
[1]杨华,刘显阳,张才利,等.鄂尔多斯盆地三叠系延长组低渗透岩性油藏主控因素及其分布规律[J].岩性油气藏,2007,19(3):1-6.Yang Hua,Liu Xianyang,Zhang Caili,et a1.The main controlling factors and distribution of low permeability lithologic reservoirs of Triassic Yanchang Formation in Ordos Basin[J].Lithologic Reservoirs,2007,19(3):1-6(in Chinese with English abstract).
[2]陈全红,李文厚,郭艳琴,等.鄂尔多斯盆地南部延长组浊积岩体系及油气勘探意义[J].地质学报,2006,80(5):656-662.Chen Quanhong,Li Wenhou,Guo Yanqin,et a1.Lake basin evolution and petroleum accumulation of Late Triassic Yanchang Formation in Ordos Basin[J].Acta Geologica Sinica,2006,80(5):656-663(in Chinese with English abstract).
[3]付金华,郭正权,邓秀芹,等.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[J].古地理学报,2005,7(1):34-44.Fu Jinhua,Guo Zhengquan,Deng Xiuqin,et a1.Sedimentary facies of the Yanchang Formation of Upper Triassic and petroleum geological implication in southwestern Ordos Basin[J].Journal of Palaeogeography,2005,7(1):34-44(in Chinese with English abstract).
[4]李文厚,邵磊,魏红红,等.西北地区湖相浊流沉积[J].西北大学学报(自然科学版),2001,31(1):57-62.Li Wenhou,Shao Lei,Wei Honghong,et a1.Turbidity current deposits of lake facies in northwestern China[J].Journal of Northwest University(Natural Science Edition),2001,31(1):57-62(in Chinese with English abstract).
[5]卢龙飞,史基安,蔡进功,等.鄂尔多斯盆地西峰油田三叠系延长组浊流沉积及成因模式[J].地球学报,2006,27(4):303-309.Lu Longfei,Shi Ji′an,Cai Jingong,et al.Triassic turbidity current deposit and genetic model of Yanchang Formation of Xifeng Oilfield,Ordos Basin[J].Acta Geoscientica Sinica,2006,27(4):303-309(in Chinese with English abstract).
[6]陈洪德,倪新锋.陇东地区三叠系延长组沉积层序及充填响应特征[J].石油与天然气地质,2006,27(2):143-151.Chen Hongde,Ni Xinfeng.Depositional sequence and filling response characteristics of Triassic Yanchang Formation in Longdong area[J].Oil&Gas Geology,2006,27(2):143-151(in Chinese with English abstract).
[7]王居峰,郭彦如,张延玲,等.鄂尔多斯盆地三叠系延长组层序地层格架与沉积相构成[J].现代地质,2009,23(5):803-808.Wang Jufeng,Guo Yanru,Zhang Yanling,et al.Sequence stratigraphic framework and sedimentary facies of Yanchang Formation,Triassic System in Ordos Basin[J].Geoscience,2009,23(5):803-808(in Chinese with English abstract).
[8]倪新锋,陈洪德,韦东晓.鄂尔多斯盆地三叠系延长组层序地层格架与油气勘探[J].中国地质,2007,34(1):73-80.Ni Xinfeng,Chen Hongde,Wei Dongxiao.Sequence stratigraphic framework of the Triassic Yancang Formation in the Ordos basin and petroleum exploration[J].Geology in China,2007,34(1):73-80(in Chinese with English abstract).
[9]徐胜林,陈洪德,林良彪,等.川东南地区飞仙关组层序岩相古地理特征[J].中国地质,2009,26(5):1055-1064.Xu Shenglin,Chen Hongde,Lin Liangbiao,et al.Sequence-based lithofacies and paleogeography of Lower Triassic Feixianguan Formation in southeastern Sichuan Basin[J].Geology in China,2009,26(5):1055-1064(in Chinese with English abstract).
[10]陈安清,陈洪德,林良彪,等.鄂尔多斯盆地东北部石盒子组层序充填样式及过程分析[J].中国地质,2009,26(5):1046-1054.Chen Anqing,Chen Hongde,Lin Liangbiao,et al.An analysis of sequence filling types and process of Shihezi Formation in northeast Ordos Basin[J].Geology in China,2009,26(5):1046-1054(in Chinese with English abstract).
[11]倪超,纪友亮.饶阳凹陷古近系沙河街组层序地层分析及沉积体系研究[J].中国地质,2006,33(1):193-200.Ni Chao,Ji Youliang.Sequence stratigraphy and sedimentary system of the Paleogene Shahejie Formation in the Raoyang subbasin[J].Geology in China,2006,33(1):193-200(in Chinese with English abstract).
[12]温立峰,吴胜和,岳大力,等.胜二区沙二段7砂组地层基准面旋回与沉积微相研究[J].中国地质,2010,37(1):144-151.Wen Lifeng,Wu Shenghe,Yue Dali,et al.Stratigraphic base-level cycles and sedimentary microfacies of Es_2-7Formation in the Shengtuo Oilfield[J].Geology in China,2010,37(1):144-151.
[13]Cross A T,Lessenger M A.Sediment Volume Partitioning:Rationale for St ratigraphic Model Evaluation and High-Resolution St ratigraphic Correlation[R].Accepted for publication in Norwegian Petroleums Forening Conference Volume,1996:1-24.
[14]邓宏文.美国层序地层研究中的新学派——高分辨率层序地层学[J].石油与天然气地质,1995,16(2):89-97.Deng Hongwen.A new school of thought in sequence stratigraphic studies in U.S.:high-resolution sequence stratigraphy[J].Oil&Gas Geology,1995,16(2):89-97(in Chinese with English abstract).
[15]郑荣才,尹世民,彭军.基准面旋回结构和叠加样式的沉积动力学分析[J].沉积学报,2000,18(3):369-375.Zheng Rongcai,Yin Shimin,Peng Jun.Sedimentary dynamic analysis of sequence structure and stacking pattern of base-level cycle[J].Acta sedimentologica sinica,2000,18(3):369-375(in Chinese with English abstract).
[16]郑荣才,彭军,吴朝容.陆相盆地基准面旋回的级次划分和研究意义[J].沉积学报,2001,19(2):249-255.Zheng Rongcai,Peng Jun,Wu Zhaorong.Grade division of base-level cycles of Terrigenous Basin and its implications[J].Acta Sedimentologica Sinica,2001,19(2):249-255(in Chinese with English abstract).
[17]Strasser A,Hilgen F J,Heckel P H.Cyclostratigraphy-concepts,definitions,and applications[J].Newsletter of Stratigraphy,2006,42(2):75-114.
[18]Kuiper K F,Deino A,Hilgen F J,et al.Syn-chronizing rock clocks of Earth history[J].Science,2008,320:500-504.
[19]Hinnov L A,Ogg J G.Cyclostratigraphy and the astronomical time scale[J].Stratigraphy,2007,4:239-251.
[20]吴怀春,张世红,冯庆来,等.旋回地层学理论基础、研究进展和展望[J].地球科学——中国地质大学学报,2011,36(3):409-428.Wu Huaichun,Zhang Shihong,Feng Qinglai,et al.Theoretical basis,research advancement and prospects of cyclostratigraph[J].Earth Science—Journal of China University of Geoscience,2011,36(3):409-428(in Chinese with English abstract).
[21]刘池洋,赵红格,桂小军.鄂尔多斯盆地演化-改造的时空坐标及其成藏(矿)响应[J].地质学报,2006,80(5),617-638.Liu Chiyang,Zhao Hongge,Gui Xiaojun.Space-time cordinate of the evolution and reformation and mineralization response in Ordos Basin[J].Acta Geologica Sinica,2006,80(5),617-638(in Chinese with English abstract).
[2]陈全红,李文厚,郭艳琴,等.鄂尔多斯盆地南部延长组浊积岩体系及油气勘探意义[J].地质学报,2006,80(5):656-662.Chen Quanhong,Li Wenhou,Guo Yanqin,et a1.Lake basin evolution and petroleum accumulation of Late Triassic Yanchang Formation in Ordos Basin[J].Acta Geologica Sinica,2006,80(5):656-663(in Chinese with English abstract).
[3]付金华,郭正权,邓秀芹,等.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[J].古地理学报,2005,7(1):34-44.Fu Jinhua,Guo Zhengquan,Deng Xiuqin,et a1.Sedimentary facies of the Yanchang Formation of Upper Triassic and petroleum geological implication in southwestern Ordos Basin[J].Journal of Palaeogeography,2005,7(1):34-44(in Chinese with English abstract).
[4]李文厚,邵磊,魏红红,等.西北地区湖相浊流沉积[J].西北大学学报(自然科学版),2001,31(1):57-62.Li Wenhou,Shao Lei,Wei Honghong,et a1.Turbidity current deposits of lake facies in northwestern China[J].Journal of Northwest University(Natural Science Edition),2001,31(1):57-62(in Chinese with English abstract).
[5]卢龙飞,史基安,蔡进功,等.鄂尔多斯盆地西峰油田三叠系延长组浊流沉积及成因模式[J].地球学报,2006,27(4):303-309.Lu Longfei,Shi Ji′an,Cai Jingong,et al.Triassic turbidity current deposit and genetic model of Yanchang Formation of Xifeng Oilfield,Ordos Basin[J].Acta Geoscientica Sinica,2006,27(4):303-309(in Chinese with English abstract).
[6]陈洪德,倪新锋.陇东地区三叠系延长组沉积层序及充填响应特征[J].石油与天然气地质,2006,27(2):143-151.Chen Hongde,Ni Xinfeng.Depositional sequence and filling response characteristics of Triassic Yanchang Formation in Longdong area[J].Oil&Gas Geology,2006,27(2):143-151(in Chinese with English abstract).
[7]王居峰,郭彦如,张延玲,等.鄂尔多斯盆地三叠系延长组层序地层格架与沉积相构成[J].现代地质,2009,23(5):803-808.Wang Jufeng,Guo Yanru,Zhang Yanling,et al.Sequence stratigraphic framework and sedimentary facies of Yanchang Formation,Triassic System in Ordos Basin[J].Geoscience,2009,23(5):803-808(in Chinese with English abstract).
[8]倪新锋,陈洪德,韦东晓.鄂尔多斯盆地三叠系延长组层序地层格架与油气勘探[J].中国地质,2007,34(1):73-80.Ni Xinfeng,Chen Hongde,Wei Dongxiao.Sequence stratigraphic framework of the Triassic Yancang Formation in the Ordos basin and petroleum exploration[J].Geology in China,2007,34(1):73-80(in Chinese with English abstract).
[9]徐胜林,陈洪德,林良彪,等.川东南地区飞仙关组层序岩相古地理特征[J].中国地质,2009,26(5):1055-1064.Xu Shenglin,Chen Hongde,Lin Liangbiao,et al.Sequence-based lithofacies and paleogeography of Lower Triassic Feixianguan Formation in southeastern Sichuan Basin[J].Geology in China,2009,26(5):1055-1064(in Chinese with English abstract).
[10]陈安清,陈洪德,林良彪,等.鄂尔多斯盆地东北部石盒子组层序充填样式及过程分析[J].中国地质,2009,26(5):1046-1054.Chen Anqing,Chen Hongde,Lin Liangbiao,et al.An analysis of sequence filling types and process of Shihezi Formation in northeast Ordos Basin[J].Geology in China,2009,26(5):1046-1054(in Chinese with English abstract).
[11]倪超,纪友亮.饶阳凹陷古近系沙河街组层序地层分析及沉积体系研究[J].中国地质,2006,33(1):193-200.Ni Chao,Ji Youliang.Sequence stratigraphy and sedimentary system of the Paleogene Shahejie Formation in the Raoyang subbasin[J].Geology in China,2006,33(1):193-200(in Chinese with English abstract).
[12]温立峰,吴胜和,岳大力,等.胜二区沙二段7砂组地层基准面旋回与沉积微相研究[J].中国地质,2010,37(1):144-151.Wen Lifeng,Wu Shenghe,Yue Dali,et al.Stratigraphic base-level cycles and sedimentary microfacies of Es_2-7Formation in the Shengtuo Oilfield[J].Geology in China,2010,37(1):144-151.
[13]Cross A T,Lessenger M A.Sediment Volume Partitioning:Rationale for St ratigraphic Model Evaluation and High-Resolution St ratigraphic Correlation[R].Accepted for publication in Norwegian Petroleums Forening Conference Volume,1996:1-24.
[14]邓宏文.美国层序地层研究中的新学派——高分辨率层序地层学[J].石油与天然气地质,1995,16(2):89-97.Deng Hongwen.A new school of thought in sequence stratigraphic studies in U.S.:high-resolution sequence stratigraphy[J].Oil&Gas Geology,1995,16(2):89-97(in Chinese with English abstract).
[15]郑荣才,尹世民,彭军.基准面旋回结构和叠加样式的沉积动力学分析[J].沉积学报,2000,18(3):369-375.Zheng Rongcai,Yin Shimin,Peng Jun.Sedimentary dynamic analysis of sequence structure and stacking pattern of base-level cycle[J].Acta sedimentologica sinica,2000,18(3):369-375(in Chinese with English abstract).
[16]郑荣才,彭军,吴朝容.陆相盆地基准面旋回的级次划分和研究意义[J].沉积学报,2001,19(2):249-255.Zheng Rongcai,Peng Jun,Wu Zhaorong.Grade division of base-level cycles of Terrigenous Basin and its implications[J].Acta Sedimentologica Sinica,2001,19(2):249-255(in Chinese with English abstract).
[17]Strasser A,Hilgen F J,Heckel P H.Cyclostratigraphy-concepts,definitions,and applications[J].Newsletter of Stratigraphy,2006,42(2):75-114.
[18]Kuiper K F,Deino A,Hilgen F J,et al.Syn-chronizing rock clocks of Earth history[J].Science,2008,320:500-504.
[19]Hinnov L A,Ogg J G.Cyclostratigraphy and the astronomical time scale[J].Stratigraphy,2007,4:239-251.
[20]吴怀春,张世红,冯庆来,等.旋回地层学理论基础、研究进展和展望[J].地球科学——中国地质大学学报,2011,36(3):409-428.Wu Huaichun,Zhang Shihong,Feng Qinglai,et al.Theoretical basis,research advancement and prospects of cyclostratigraph[J].Earth Science—Journal of China University of Geoscience,2011,36(3):409-428(in Chinese with English abstract).
[21]刘池洋,赵红格,桂小军.鄂尔多斯盆地演化-改造的时空坐标及其成藏(矿)响应[J].地质学报,2006,80(5),617-638.Liu Chiyang,Zhao Hongge,Gui Xiaojun.Space-time cordinate of the evolution and reformation and mineralization response in Ordos Basin[J].Acta Geologica Sinica,2006,80(5),617-638(in Chinese with English abstract).
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