胜二区沙二段7砂组地层基准面旋回与沉积微相研究
|
摘要
应用油田开发区岩心、测井及地震等资料,对胜坨油田二区7砂组高分辨率层序发育特征以及不同级次基准面旋回内部沉积微相空间展布规律进行研究。研究表明,该区7砂组发育多级基准面旋回,包括1个长期基准面旋回、2个中期基准面旋回和9个短期基准面旋回,反映了可容空间与沉积物补给速率比值(A/S比值)在纵向上的多级变化发育模式,即在A/S比值总体向上变小的背景上,有多个次级A/S比值向上变小再变大的旋回。随着基准面的下降-波动-下降,沉积微相从7砂组底部的河口坝过度为地层中部的席状砂背景下残存的分流河道沉积,再到7砂组上部的河口坝沉积。A/S比值控制着研究区沉积微相的发育类型、展布模式。弄清楚研究区地层沉积特征与基准面旋回之间的关系对于精细储层表征和油田开发中后期井网调整具有重要指导意义。
Combining borehole data with dynamic data from the oil development area of Es_2-7 Formation in the Shengtuo Oilfield,the authors studied the features of the high resolution sequence stratigraphy and the sedimentary microfacies in different base-level cycles.The results show that the hierarchical base-level cycles are well developed and composed of one long-term cycle,two middle-term cycles and nine short-term cycles,indicating the hierarchical change of the accommodation space to sediment supply ratios(A/S) in a vertical direction.Several smaller cycles with decreasing-increasing A/S ratios were observed on a general decreasing A/S background.With the descending-fluctuating-ascending of base-level cycles,the microfacies change from the sheet pattern of relict distributary channel at the bottom to the combined pattern of mouth bar at the top of the 7th Formation.A/S ratios control the sedimentary microfacies types and distribution pattern,suggesting that the relationship between the sedimentation characteristics and the base-level cycles has a very important guiding significance in precise reservoir characterization and well pattern optimization.
Combining borehole data with dynamic data from the oil development area of Es_2-7 Formation in the Shengtuo Oilfield,the authors studied the features of the high resolution sequence stratigraphy and the sedimentary microfacies in different base-level cycles.The results show that the hierarchical base-level cycles are well developed and composed of one long-term cycle,two middle-term cycles and nine short-term cycles,indicating the hierarchical change of the accommodation space to sediment supply ratios(A/S) in a vertical direction.Several smaller cycles with decreasing-increasing A/S ratios were observed on a general decreasing A/S background.With the descending-fluctuating-ascending of base-level cycles,the microfacies change from the sheet pattern of relict distributary channel at the bottom to the combined pattern of mouth bar at the top of the 7th Formation.A/S ratios control the sedimentary microfacies types and distribution pattern,suggesting that the relationship between the sedimentation characteristics and the base-level cycles has a very important guiding significance in precise reservoir characterization and well pattern optimization.
引文
[1]孙梦茹,周建林,崔文富,等.胜坨油田精细地质研究[M].北京:中国石化出版社,2004:14-18.Sun Mengru,Zhou Jianlin,Cui Wenfu,et al.Application of Detailed Geologic Research of Shengtuo Oilfield[M].Beijing:China Petrochemical Press,2004:14-18(in Chinese).
[2]Cross T A,Baker M R,Chapin M A.Applcation of High resolution sequence stratigraphy to reservoir analysis[C]//EschardR&Doligez B(eds.).Subsurface Reservoir Characterization from Outcrop Observations Proceedings of the7th Exploration and Production Research Conference,Technip,Paris,1993:11-33.
[3]靳松,朱筱敏,钟大康.扇三角洲高分辨率层序地层对比及砂体分布规律[J].中国地质,2006,33(1):212-220.Jin Song,Zhu Xiaomin,Zhong Dahang.High-resolution sequence stratigraphic correlation of fan deltas and distribution characteristics of sandbodies[J].Geology in China,2006,33(1):212-220(in Chinese with English abstract).
[4]邓宏文,王红亮,祝永军,等.高分辨率层序地层学原理及应用[M].北京:地质出版社,2002:41-55.Deng Hongwen,Wang Hongliang,Zhu Yongjun,et al.Theory and Application of High Resolution Sequence Stratigraphy[M].Beijing:Geological Publishing House,2002:41-55(in Chinese).
[5]邓宏文,王宏亮,宁宁.沉积物体积分配原理高分辨率层学地层学的理论基础[J].地学前缘,2000,7(4):305-313.Deng Hongwen,Wang Hongliang,Ning Ning.Sediment volume partition principle:theory basis for high-resolution sequence stratigraphy[J].Earth Science Frontiers,2000,7(4):305-313(in Chinese with English abstract).
[6]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 stratigraphicstudies in U.S.:High resolution sequence stratigraphy[J].Oil&Gas Geology,1995,16(2):89-97(in Chinese with English abstract).
[7]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).
[8]郭建林,贾爱林,何东博,等.滦平上侏罗统—下白垩统扇三角洲露头层序地层学研究[J].中国地质,2007,34(4):628-635.Guo Jianlin,Jia Ailin,He Dongbo,et al.Sequence stratigraphy of Upper Jurassic-Lower Cretaceous fan-delta outcrops in Luanping[J].Geology in China,2007,34(4):628-635(in Chinese with English abstract).
[9]郑荣才,彭军,吴朝荣.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):249-254.Zheng Rongcai,Peng Jun,Wu Chaorong.Grade division of base-levelcycles of Terrigenous Basin and its implications[J].Acta Sedimentologica Sinica,2001,19(2):249-254(in Chinese with English abstract).
[10]郑荣才,吴朝容,叶茂才,等.浅谈陆相盆地高分辨率层序地层学研究思路[J].成都理工学院学报,2000,27(3):241-244.Zheng Rongcai,Wu Chaorong,Ye Maocai.Research thinking of high-resolution sequence stratigraphy about a terrigenous basin[J].Journal of Chendu University of Technology,2000,27(3):241-244(in Chinese with English abstract).
[11]付国民,李永军,梁志录,等.柴达木盆地阿尔金斜坡层序地层及湖盆充填型式[J].中国地质,2002,29(2):172-177.Fu Guoming,Li Yongjun,Liang Zhilu,et al.Sequence stratigraphy and lake basin-filling model on the Altun slope in the Qaidam basin[J].Geology in China,2002,29(2):172-177(in Chinese with English abstract).
[12]吴胜和,伊振林,许长福,等.新疆克拉玛依油田六中区三叠系克下组冲积扇高频基准面旋回与砂体分布型式研究.[J]高校地质学报,2008,14(2):157-163.Wu Shenghe,Yi Zhenlin,Xu Changfu,et al.High frequency base-level cycles of alluvial fan and distribution patterns of sandbodies of lower Karamay formation(Triassic)in middle6th district of Karamay oilfield,Xinjiang[J].Geological Journal of China Universities,2008,14(2):157-163(in Chinese with English abstract).
[2]Cross T A,Baker M R,Chapin M A.Applcation of High resolution sequence stratigraphy to reservoir analysis[C]//EschardR&Doligez B(eds.).Subsurface Reservoir Characterization from Outcrop Observations Proceedings of the7th Exploration and Production Research Conference,Technip,Paris,1993:11-33.
[3]靳松,朱筱敏,钟大康.扇三角洲高分辨率层序地层对比及砂体分布规律[J].中国地质,2006,33(1):212-220.Jin Song,Zhu Xiaomin,Zhong Dahang.High-resolution sequence stratigraphic correlation of fan deltas and distribution characteristics of sandbodies[J].Geology in China,2006,33(1):212-220(in Chinese with English abstract).
[4]邓宏文,王红亮,祝永军,等.高分辨率层序地层学原理及应用[M].北京:地质出版社,2002:41-55.Deng Hongwen,Wang Hongliang,Zhu Yongjun,et al.Theory and Application of High Resolution Sequence Stratigraphy[M].Beijing:Geological Publishing House,2002:41-55(in Chinese).
[5]邓宏文,王宏亮,宁宁.沉积物体积分配原理高分辨率层学地层学的理论基础[J].地学前缘,2000,7(4):305-313.Deng Hongwen,Wang Hongliang,Ning Ning.Sediment volume partition principle:theory basis for high-resolution sequence stratigraphy[J].Earth Science Frontiers,2000,7(4):305-313(in Chinese with English abstract).
[6]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 stratigraphicstudies in U.S.:High resolution sequence stratigraphy[J].Oil&Gas Geology,1995,16(2):89-97(in Chinese with English abstract).
[7]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).
[8]郭建林,贾爱林,何东博,等.滦平上侏罗统—下白垩统扇三角洲露头层序地层学研究[J].中国地质,2007,34(4):628-635.Guo Jianlin,Jia Ailin,He Dongbo,et al.Sequence stratigraphy of Upper Jurassic-Lower Cretaceous fan-delta outcrops in Luanping[J].Geology in China,2007,34(4):628-635(in Chinese with English abstract).
[9]郑荣才,彭军,吴朝荣.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):249-254.Zheng Rongcai,Peng Jun,Wu Chaorong.Grade division of base-levelcycles of Terrigenous Basin and its implications[J].Acta Sedimentologica Sinica,2001,19(2):249-254(in Chinese with English abstract).
[10]郑荣才,吴朝容,叶茂才,等.浅谈陆相盆地高分辨率层序地层学研究思路[J].成都理工学院学报,2000,27(3):241-244.Zheng Rongcai,Wu Chaorong,Ye Maocai.Research thinking of high-resolution sequence stratigraphy about a terrigenous basin[J].Journal of Chendu University of Technology,2000,27(3):241-244(in Chinese with English abstract).
[11]付国民,李永军,梁志录,等.柴达木盆地阿尔金斜坡层序地层及湖盆充填型式[J].中国地质,2002,29(2):172-177.Fu Guoming,Li Yongjun,Liang Zhilu,et al.Sequence stratigraphy and lake basin-filling model on the Altun slope in the Qaidam basin[J].Geology in China,2002,29(2):172-177(in Chinese with English abstract).
[12]吴胜和,伊振林,许长福,等.新疆克拉玛依油田六中区三叠系克下组冲积扇高频基准面旋回与砂体分布型式研究.[J]高校地质学报,2008,14(2):157-163.Wu Shenghe,Yi Zhenlin,Xu Changfu,et al.High frequency base-level cycles of alluvial fan and distribution patterns of sandbodies of lower Karamay formation(Triassic)in middle6th district of Karamay oilfield,Xinjiang[J].Geological Journal of China Universities,2008,14(2):157-163(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