苏里格气田苏东区块山西组沉积体系研究
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摘要
利用岩心、测井、地震、岩石薄片、分析化验等资料,对鄂尔多斯盆地苏里格气田苏东区块山西组山1、山2段沉积微相进行了研究。研究结果表明,苏东气田东北地区山西组山1、山2段发育了洪泛曲流河沉积体系,主要沉积微相有曲流河道、边滩、河漫滩、河道间等微相类型。在沉积环境分析的基础上,进一步研究了区内沉积微相的平面展布特征及其演化规律,认为区内山2沉积期:发育曲流流河道砂体,储层以褐色含砾中粗粒岩屑石英砂岩-细砾岩为主,并且沉积期为近物源区的冲积平原河流相沉积,受潮湿气候及弱水动力沉积环境的影响,大面积发育河漫沼泽沉积,为煤层提供了温床,纵向上形成了3～5套煤层,物源供给相对充沛,形成了一定厚度的曲流河道块状砂体沉积;山西组山1沉积期:受潮湿气候的影响,广泛发育湿地河漫湖泊、河漫滩沉积。
Cores,logs,seismic profiles,rock flakes,laboratory data and other information were studied for the microfacies of the Shan1&Shan2 Formation in Sulige Gas Field,SuDong Block.Results show that the gas fields in northeast Shan1&Shan2 Formation occur in a meandering river and floodplain depositional system.The main sedimentary facies include the microfacies of meandering rivers,point bars,floodplains,interdistributary bays.The regional microfacies distribution characteristics and its evolution,and gets to the result that the meandering riverway body sand reservoirs Develops on the coarse brown pebbly lithic grains of quartz sandstone-thin conglomerate based in the depositional phase of Shan2 formation.Depositional system is near the source area of the alluvial plain of fluvial sediment,by the humid climate and the Weak water sedimentary environment of dynamic,develops large-scale river swamps diffuse deposition for the Coal layer provides a breeding ground,and formations the 3-5 sets of longitudinal seam.Source supply is relatively abundant,and formations a certain thickness of massive sand meandering channel deposits.In Shan1 deposition period: by the humid climate,well developed wetland Man River lakes,floodplain deposition.
Cores,logs,seismic profiles,rock flakes,laboratory data and other information were studied for the microfacies of the Shan1&Shan2 Formation in Sulige Gas Field,SuDong Block.Results show that the gas fields in northeast Shan1&Shan2 Formation occur in a meandering river and floodplain depositional system.The main sedimentary facies include the microfacies of meandering rivers,point bars,floodplains,interdistributary bays.The regional microfacies distribution characteristics and its evolution,and gets to the result that the meandering riverway body sand reservoirs Develops on the coarse brown pebbly lithic grains of quartz sandstone-thin conglomerate based in the depositional phase of Shan2 formation.Depositional system is near the source area of the alluvial plain of fluvial sediment,by the humid climate and the Weak water sedimentary environment of dynamic,develops large-scale river swamps diffuse deposition for the Coal layer provides a breeding ground,and formations the 3-5 sets of longitudinal seam.Source supply is relatively abundant,and formations a certain thickness of massive sand meandering channel deposits.In Shan1 deposition period: by the humid climate,well developed wetland Man River lakes,floodplain deposition.
引文
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[8]纪友亮,赵贤正,单敬福,等.冀中坳陷古近系沉积层序特征及第1期单敬福,杨文龙:苏里格气田苏东区块山西组沉积体系研究其沉积体系的演化[J].沉积学报,2009,27(3):48-56.[JI You-liang,ZHAO Xianzheng,SHAN Jingfu,et al.Depositional ar-chitecture of paleogene system tectonic sequences and evolve-ment of sedimentary system in Jizhong Depression[J].ActaSedimentologica Sinica,2009,27(3):48-56.]
[9]单敬福,纪友亮,史榕,等.基于神经网络和开窗技术的储层渗透率的预测方法—以大庆萨尔图油田葡萄花油层组PⅠ1～PⅠ4小层砂岩为例[J].地质科学,2007,42(2):395-402.[SHAN Jingfu,JI Youliang,SHI Rong,et al.Predictingmethod of reservoir permeability based on artificial neural netand windowing technique:an example from PⅠ1-PⅠ4individ-ual reservoir in Putaohua Oilfield,Daqing[J].Chinese Journalof Geology,2007,42(2):395-402.]
[10]单敬福,纪友亮,柳成志.改进人工神经网络原理对储层渗透率的预测———以北部湾盆地涠西南凹陷为例理[J].石油与天然气地质,2007,42(2):106-109.[SHAN Jingfu,JI Youliang,LIU Chengzhi.Prediction of reservoir permeability with im-proved artificial neural network principle:taking the south-west Weizhou Depression in Beibuwan Basin as an example[J].Oil and Gas Geology,2007,42(2):106-109.]
[11]Leeder M R.Fluviatile fining-upwards cycle and the magni-tude of paleochannels[J].Geol.Mag.,1973:265-276.
[12]Lorenz J C.Predictions of size and orientation of lenticularreservoirs in the Mesaverde Group,northesetern Colorado[C]//Proceedings of SPE/DOE Joint Symposium on LowPermeability Reservoirs.Denver,1985:23-26.
[13]单敬福,纪友亮.厚层河道砂体储层非均质性研究—以葡萄花油层组PⅠ1～PⅠ4小层为例[J].地质找矿论丛,2007,28(2):125-130.[SHAN Jingfu,JI Youliang.Anisotropy re-seach on the thick river channel sand reservoir-A case of layerPi1-Pi4in Putaohua Oil Set[J].Contributions to Geology andMineral Resources Research,2007,28(2):125-130.]
[14]单敬福,纪友亮.大庆油田葡萄花油层组PⅠ1—PⅠ4小层储层非均质性的主控因素分析[J].沉积与特提斯地质,2007,35(1):95-100.[SHAN Jingfu,JI Youliang.Controlling fac-tors for the heterogeneity of the Putaohua oil reservoirs in theDaqing Oil Field[J].Sedimentary Geology and Tethyan Geol-ogy,2007,35(1):95-100.]
[2]薛培华.河流点坝相储层模式概论[M].北京:石油工业出版社,1991:77-79.[XUE Peihua.River Point Bar Facies Reser-voir Model Introduction[M].Beijing:Petroleum IndustryPress,1991:77-79.]
[3]Geehan G W.Geologic Prediction of Shale Continuity,PrudhoeBay Field:Reservoir Characterization[M].Acade Press,Inc.1986,19(9):162-168.
[4]赵澄林,朱筱敏.沉积岩石学[M].北京:石油工业出版社,2001:229-379.[ZHAO Chenglin,ZHU Xiaomin.Sedimen-trary Petrography[M].Beijing:Petroleum Industry Press,2001:229-379.]
[5]单敬福,王峰,孙海雷,等.同沉积构造组合模式下的沉积层序特征及其演化[J].地质论评,2010,56(3):426-439.[SHANJingfu,WANG Feng,SUN Hailei,et al.Depositional tectonicsequences evolvement of sedimentary system by syngenesisfracture integrated mode:An example from tabel depression inMonglia[J].Geological Review,2010,56(3):426-439.]
[6]单敬福,王峰,孙海雷,等.蒙古国境内贝尔湖凹陷早白垩纪沉积充填演化与同沉积断裂的响应[J].吉林大学学报,2010,40(3):509-518.[SHAN Jingfu,WANG Feng,SUN Hailei,etal.The Responding to syn-sedimentary fault system for sedi-ment filling evolvement in the Early Cretaceous,Bel-Lake De-pression of Mongolia[J].Journal of Jilin University,2010,40(3):509-518.]
[7]单敬福,王峰,孙海雷,等.基于地震波阻抗反演的州57水平井区块小层砂体预测技术[J].石油与天然气地质,2010,31(2):212-218.[SHAN Jingfu,WANG Feng,SUN Hailei,et al.Prediction of sublayer sandstones based on wave impedance in-version in the wellblock of the horizontal well Zhou-57[J].Oiland Gas Geology,2010,31(2):212-218.]
[8]纪友亮,赵贤正,单敬福,等.冀中坳陷古近系沉积层序特征及第1期单敬福,杨文龙:苏里格气田苏东区块山西组沉积体系研究其沉积体系的演化[J].沉积学报,2009,27(3):48-56.[JI You-liang,ZHAO Xianzheng,SHAN Jingfu,et al.Depositional ar-chitecture of paleogene system tectonic sequences and evolve-ment of sedimentary system in Jizhong Depression[J].ActaSedimentologica Sinica,2009,27(3):48-56.]
[9]单敬福,纪友亮,史榕,等.基于神经网络和开窗技术的储层渗透率的预测方法—以大庆萨尔图油田葡萄花油层组PⅠ1～PⅠ4小层砂岩为例[J].地质科学,2007,42(2):395-402.[SHAN Jingfu,JI Youliang,SHI Rong,et al.Predictingmethod of reservoir permeability based on artificial neural netand windowing technique:an example from PⅠ1-PⅠ4individ-ual reservoir in Putaohua Oilfield,Daqing[J].Chinese Journalof Geology,2007,42(2):395-402.]
[10]单敬福,纪友亮,柳成志.改进人工神经网络原理对储层渗透率的预测———以北部湾盆地涠西南凹陷为例理[J].石油与天然气地质,2007,42(2):106-109.[SHAN Jingfu,JI Youliang,LIU Chengzhi.Prediction of reservoir permeability with im-proved artificial neural network principle:taking the south-west Weizhou Depression in Beibuwan Basin as an example[J].Oil and Gas Geology,2007,42(2):106-109.]
[11]Leeder M R.Fluviatile fining-upwards cycle and the magni-tude of paleochannels[J].Geol.Mag.,1973:265-276.
[12]Lorenz J C.Predictions of size and orientation of lenticularreservoirs in the Mesaverde Group,northesetern Colorado[C]//Proceedings of SPE/DOE Joint Symposium on LowPermeability Reservoirs.Denver,1985:23-26.
[13]单敬福,纪友亮.厚层河道砂体储层非均质性研究—以葡萄花油层组PⅠ1～PⅠ4小层为例[J].地质找矿论丛,2007,28(2):125-130.[SHAN Jingfu,JI Youliang.Anisotropy re-seach on the thick river channel sand reservoir-A case of layerPi1-Pi4in Putaohua Oil Set[J].Contributions to Geology andMineral Resources Research,2007,28(2):125-130.]
[14]单敬福,纪友亮.大庆油田葡萄花油层组PⅠ1—PⅠ4小层储层非均质性的主控因素分析[J].沉积与特提斯地质,2007,35(1):95-100.[SHAN Jingfu,JI Youliang.Controlling fac-tors for the heterogeneity of the Putaohua oil reservoirs in theDaqing Oil Field[J].Sedimentary Geology and Tethyan Geol-ogy,2007,35(1):95-100.]
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