塔南凹陷南屯组近岸水下扇沉积特征及有利含油相带分析
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摘要
综合利用地震、测井、岩心等资料,对塔南凹陷南屯组近岸水下扇的沉积特征、展布、演化及有利含油相带进行研究。结果表明:本区近岸水下扇可识别出3种亚相、4种微相,不同相带间沉积特征差异显著;近岸水下扇集中发育于凹陷东部控盆断裂的下降盘,在多期扇体叠置连片下,形成了东南、东北两套扇裙,其展布、演化具有"南北各自连片,扇裙先盛后衰"的特点,但受控盆断裂幕式活动和东南、东北物源供给差异的影响,东南扇群的发展和消亡均略早于东北扇群;中扇辫状沟道储层物性及含油气性最好,主要发育中低孔储层,但不同位置及埋深储层渗透率差异较大,很难形成大面积连片的优质储层,因此本区近岸水下扇沉积主要发育个体规模相对较小却数量众多的岩性油气藏和构造-岩性复合油气藏。
The sedimentary characteristics,distribution,evolution and favorable oil-bearing facies belts of near-shore subaqueous fan of Nantun formation in Tanan depression were studied through the integrated utilization of data of seismology,well-logging and core.The results show that three kinds of sub-facies and four kinds of microfacies can be identified in near-shore subaqueous fan,and the different facies belts show obvious distinctions in sedimentary characteristics.The development of near-shore subaqueous fan concentrated at the downthrown side of the basin controlling fault in the east part of the depression.The overlaying of multistage near-shore subaqueous fan sediments formed two fan aprons which are characterized by "southeast and northeast each contiguous,flourish at first while decline at last" at the southeast and northeast part of the area.Owning to episodic activities of the basin controlling fault and the distinctions between the sources from southeast and northeast respectively,the southeast fan aprons are a little earlier than the northeast ones in the time of the formation and the decline of the fan aprons.The physical property of braided channels of middle fan sub-facies of near-shore subaqueous fan is the best,and the reservoirs with low-middle permeability developed.The reservoir porosity of different places and burial depths shows a great discrepancy,therefore it is hard that the reservoirs formed a large joint area and high-quality ones.The study area mainly developed lithologic hydrocarbon reservoirs and structural-lithologic composite hydrocarbon reservoirs whose individual scale is small but quantities are numerous.
The sedimentary characteristics,distribution,evolution and favorable oil-bearing facies belts of near-shore subaqueous fan of Nantun formation in Tanan depression were studied through the integrated utilization of data of seismology,well-logging and core.The results show that three kinds of sub-facies and four kinds of microfacies can be identified in near-shore subaqueous fan,and the different facies belts show obvious distinctions in sedimentary characteristics.The development of near-shore subaqueous fan concentrated at the downthrown side of the basin controlling fault in the east part of the depression.The overlaying of multistage near-shore subaqueous fan sediments formed two fan aprons which are characterized by "southeast and northeast each contiguous,flourish at first while decline at last" at the southeast and northeast part of the area.Owning to episodic activities of the basin controlling fault and the distinctions between the sources from southeast and northeast respectively,the southeast fan aprons are a little earlier than the northeast ones in the time of the formation and the decline of the fan aprons.The physical property of braided channels of middle fan sub-facies of near-shore subaqueous fan is the best,and the reservoirs with low-middle permeability developed.The reservoir porosity of different places and burial depths shows a great discrepancy,therefore it is hard that the reservoirs formed a large joint area and high-quality ones.The study area mainly developed lithologic hydrocarbon reservoirs and structural-lithologic composite hydrocarbon reservoirs whose individual scale is small but quantities are numerous.
引文
[1]刘招君.湖泊水下扇沉积特征及影响因素:以伊通盆地莫里青断陷双阳组为例[J].沉积学报,2003,21(1):148-154.LIU Zhao-jun.Lacus subaqueous fan sedimentary charac-teristics and influence factors—a case study of Shuangyangformation in Moliqing fault subsidence of Yitong Basin[J].Acta Sedimentologica Sinica,2003,21(1):148-154.
[2]鄢继华,陈世悦,姜在兴.东营凹陷北部陡坡带近岸水下扇沉积特征[J].石油大学学报:自然科学版,2005,29(1):12-16.YAN Ji-hua,CHEN Shi-yue,JIANG Zai-xing.Sedimenta-ry characteristics of nearshore subaqueous fans in steepslope of Dongying depression[J].Journal of the Universityof Petroleum,China(Edition of Natural Science),2005,29(1):12-16.
[3]纪友亮,曹瑞成,蒙启安,等.塔木察格盆地塔南凹陷下白垩统层序结构特征及控制因素分析[J].地质学报,2009,83(6):827-835.JI You-liang,CAO Rui-cheng,MENG Qi-an,et al.Anal-ysis of sequence structure and its controlling factors in low-er cretaceous in Tanan depression,Tamuchage Basin[J].Acta Geologica Sinica,2009,83(6):827-835.
[4]张萌,田景春.“近岸水下扇”的命名、特征及储集性[J].岩相古地理,1999,19(4):42-52.ZHANG Meng,TIAN Jing-chun.The nomenclature,sedi-mentary characteristics and reservoir potential of nearshoresubaqueous fans[J].Sedimentary Facies and Palaeogeo-graph,1999,19(4):42-52.
[5]吴崇筠,刘宝珺,王德发,等.碎屑岩沉积相模式[J].石油学报,1981,2(4):1-10.WU Chong-yun,LIU Bao-jun,WANG De-fa,et al.Pat-terns of sedimentary facies of clastics in china[J].ActaPetrolei Sinica,1981,2(4):1-10.
[6]吴崇筠.湖盆砂体类型[J].沉积学报,1986,4(4):1-26.WU Chong-yun.Sandbodies in lake basin[J].Acta Sedi-mentologica Sinica,1986,4(4):1-26.
[7]赵国连,赵澄林,叶连俊.渤海湾盆地“四扇一沟”沉积体系及其油气意义[J].地质力学学报,2005,11(3):245-258.ZHAO Guo-lian,ZHAO Cheng-lin,YE Lian-jun.Sedi-mentary system of“four fans and one channel”in the Bo-hai Gulf Basin and its significance for petroleum explora-tion[J].Journal of Geomechanics,2005,11(3):245-258.
[8]WALKER R G.Deep-water sandstone facies and ancientsubmarine fans:models for exploration for stratigraphictraps[J].AAPG Bulletin,1978,62:932-966.
[9]赵澄林,刘孟慧.湖底扇相模式及其在油气预测中的应用[J].华东石油学院学报,1984(4):323-324.ZHAO Cheng-lin,LIU Meng-hui.Facies model of thesublake-fan and its application to oil and gas exploration[J].Journal of East China Petroleum Institute,1984(4):323-324.
[10]何起祥,刘招君,王东坡,等.湖泊相浊积岩的主要特征及其地质意义[J].沉积学报,1984,2(4):33-45.HE Qi-xiang,LIU Zhao-jun,WANG Dong-po,et al.Characteristics of lacustrine turbidites and their tectonicsignificance[J].Acta Sedimentologica Sinica,1984,2(4):33-45.
[11]朱筱敏,查明,张卫海,等.陆西凹陷上侏罗统近岸水下扇沉积特征研究[J].石油大学学报:自然科学版,1995,19(1):1-6.ZHU Xiao-min,ZHA Ming,ZHANG Wei-hai,et al.Sedimentary features of upper jurassic nearshore suba-queous fan in Luxi depression[J].Journal of the Uni-versity of Petroleum,China(Edition of Natural Sci-ence),1995,19(1):1-6.
[12]方爱民,李继亮,侯泉林.浊流及相关重力流沉积研究综述[J].地质论评,1998,44(3):270-280.FANG Ai-min,LI Ji-liang,HOU Quan-lin.Sedimenta-tion of turbidity currents and relative gravity flows:a re-view[J].Geological Review,1998,44(3):270-280.
[13]SHANMUGAM G.50 years of the turbidite paradigm(1950s-1990s):deep-water processes and facies mod-els—a critical perspective[J].Marine and PetroleumGeology,2000,17(2):285-342.
[14]孔凡仙.东营凹陷北部陡坡带砂砾岩体的勘探[J].石油地球物理勘探,2000,35(5):669-676.KONG Fan-xian.Prospecting for sand-gravel body innorthern steep slope of Dongying depression[J].OilGeophysical Prospecting,2000,35(5):669-676.
[15]张兴阳,罗顺社,何幼斌.沉积物重力流-深水牵引流沉积组合——鲍马序列多解性探讨[J].江汉石油学院学报,2001,23(1):1-4.ZHANG Xing-yang,LUO Shun-she,HE You-bin.De-posit assemblage of gravity flow and traction current indeep water—a study of the multiple interpretation of thebouma sequence[J].Journal of Jianghan Petroleum In-stitute,2001,23(1):1-4.
[16]庞雄,陈长民,朱明,等.深水沉积研究前缘问题[J].地质论评,2007,53(1):36-43.PANG Xiong,CHEN Chang-min,ZHU Ming,et al.Frontier of the deep-water deposition study[J].Geolog-ical Review,2007,53(1):36-43.
[17]JACKSON Christopher A L,JOHNSON Howard D.Sus-tained turbidity currents and their interaction with deb-rite-related topography;Labuan Island,offshore NWBorneo,Malaysia[J].Sedimentary Geology,2009,219(1/4):77-96.
[18]FEDELE Juan J,GARCA Marcelo H.Laboratory ex-periments on the formation of subaqueous depositionalgullies by turbidity currents[J].Marine Geology,2009,258(1/4):48-59.
[19]张金亮,沈凤.乌尔逊凹陷大磨拐河组近岸水下扇储层特征[J].石油学报,1991,12(3):25-35.ZHANG Jin-liang,SHEN Feng.Characteristics of near-shore subaqueous fan reservoir in damoguaihe formation,wuerxun depression[J].Acta Petrolei Sinica,1991,12(3):25-35.
[20]安洁,操应长,王艳忠.东营凹陷北带沙四段近岸水下扇砂砾岩储层物性演化特征[J].石油天然气学报,2008,30(6):221-224.AN Jie,CAO Ying-chang,WANG Yan-zhong.Evolu-sionary features of the physical properties of greval-sand-stone reserviors in near-shore subaqueous fan facies,Sha-si stage of north belt in Dongying depression[J].Journalof Oil and Gas Technology,2008,30(6):221-224.
[2]鄢继华,陈世悦,姜在兴.东营凹陷北部陡坡带近岸水下扇沉积特征[J].石油大学学报:自然科学版,2005,29(1):12-16.YAN Ji-hua,CHEN Shi-yue,JIANG Zai-xing.Sedimenta-ry characteristics of nearshore subaqueous fans in steepslope of Dongying depression[J].Journal of the Universityof Petroleum,China(Edition of Natural Science),2005,29(1):12-16.
[3]纪友亮,曹瑞成,蒙启安,等.塔木察格盆地塔南凹陷下白垩统层序结构特征及控制因素分析[J].地质学报,2009,83(6):827-835.JI You-liang,CAO Rui-cheng,MENG Qi-an,et al.Anal-ysis of sequence structure and its controlling factors in low-er cretaceous in Tanan depression,Tamuchage Basin[J].Acta Geologica Sinica,2009,83(6):827-835.
[4]张萌,田景春.“近岸水下扇”的命名、特征及储集性[J].岩相古地理,1999,19(4):42-52.ZHANG Meng,TIAN Jing-chun.The nomenclature,sedi-mentary characteristics and reservoir potential of nearshoresubaqueous fans[J].Sedimentary Facies and Palaeogeo-graph,1999,19(4):42-52.
[5]吴崇筠,刘宝珺,王德发,等.碎屑岩沉积相模式[J].石油学报,1981,2(4):1-10.WU Chong-yun,LIU Bao-jun,WANG De-fa,et al.Pat-terns of sedimentary facies of clastics in china[J].ActaPetrolei Sinica,1981,2(4):1-10.
[6]吴崇筠.湖盆砂体类型[J].沉积学报,1986,4(4):1-26.WU Chong-yun.Sandbodies in lake basin[J].Acta Sedi-mentologica Sinica,1986,4(4):1-26.
[7]赵国连,赵澄林,叶连俊.渤海湾盆地“四扇一沟”沉积体系及其油气意义[J].地质力学学报,2005,11(3):245-258.ZHAO Guo-lian,ZHAO Cheng-lin,YE Lian-jun.Sedi-mentary system of“four fans and one channel”in the Bo-hai Gulf Basin and its significance for petroleum explora-tion[J].Journal of Geomechanics,2005,11(3):245-258.
[8]WALKER R G.Deep-water sandstone facies and ancientsubmarine fans:models for exploration for stratigraphictraps[J].AAPG Bulletin,1978,62:932-966.
[9]赵澄林,刘孟慧.湖底扇相模式及其在油气预测中的应用[J].华东石油学院学报,1984(4):323-324.ZHAO Cheng-lin,LIU Meng-hui.Facies model of thesublake-fan and its application to oil and gas exploration[J].Journal of East China Petroleum Institute,1984(4):323-324.
[10]何起祥,刘招君,王东坡,等.湖泊相浊积岩的主要特征及其地质意义[J].沉积学报,1984,2(4):33-45.HE Qi-xiang,LIU Zhao-jun,WANG Dong-po,et al.Characteristics of lacustrine turbidites and their tectonicsignificance[J].Acta Sedimentologica Sinica,1984,2(4):33-45.
[11]朱筱敏,查明,张卫海,等.陆西凹陷上侏罗统近岸水下扇沉积特征研究[J].石油大学学报:自然科学版,1995,19(1):1-6.ZHU Xiao-min,ZHA Ming,ZHANG Wei-hai,et al.Sedimentary features of upper jurassic nearshore suba-queous fan in Luxi depression[J].Journal of the Uni-versity of Petroleum,China(Edition of Natural Sci-ence),1995,19(1):1-6.
[12]方爱民,李继亮,侯泉林.浊流及相关重力流沉积研究综述[J].地质论评,1998,44(3):270-280.FANG Ai-min,LI Ji-liang,HOU Quan-lin.Sedimenta-tion of turbidity currents and relative gravity flows:a re-view[J].Geological Review,1998,44(3):270-280.
[13]SHANMUGAM G.50 years of the turbidite paradigm(1950s-1990s):deep-water processes and facies mod-els—a critical perspective[J].Marine and PetroleumGeology,2000,17(2):285-342.
[14]孔凡仙.东营凹陷北部陡坡带砂砾岩体的勘探[J].石油地球物理勘探,2000,35(5):669-676.KONG Fan-xian.Prospecting for sand-gravel body innorthern steep slope of Dongying depression[J].OilGeophysical Prospecting,2000,35(5):669-676.
[15]张兴阳,罗顺社,何幼斌.沉积物重力流-深水牵引流沉积组合——鲍马序列多解性探讨[J].江汉石油学院学报,2001,23(1):1-4.ZHANG Xing-yang,LUO Shun-she,HE You-bin.De-posit assemblage of gravity flow and traction current indeep water—a study of the multiple interpretation of thebouma sequence[J].Journal of Jianghan Petroleum In-stitute,2001,23(1):1-4.
[16]庞雄,陈长民,朱明,等.深水沉积研究前缘问题[J].地质论评,2007,53(1):36-43.PANG Xiong,CHEN Chang-min,ZHU Ming,et al.Frontier of the deep-water deposition study[J].Geolog-ical Review,2007,53(1):36-43.
[17]JACKSON Christopher A L,JOHNSON Howard D.Sus-tained turbidity currents and their interaction with deb-rite-related topography;Labuan Island,offshore NWBorneo,Malaysia[J].Sedimentary Geology,2009,219(1/4):77-96.
[18]FEDELE Juan J,GARCA Marcelo H.Laboratory ex-periments on the formation of subaqueous depositionalgullies by turbidity currents[J].Marine Geology,2009,258(1/4):48-59.
[19]张金亮,沈凤.乌尔逊凹陷大磨拐河组近岸水下扇储层特征[J].石油学报,1991,12(3):25-35.ZHANG Jin-liang,SHEN Feng.Characteristics of near-shore subaqueous fan reservoir in damoguaihe formation,wuerxun depression[J].Acta Petrolei Sinica,1991,12(3):25-35.
[20]安洁,操应长,王艳忠.东营凹陷北带沙四段近岸水下扇砂砾岩储层物性演化特征[J].石油天然气学报,2008,30(6):221-224.AN Jie,CAO Ying-chang,WANG Yan-zhong.Evolu-sionary features of the physical properties of greval-sand-stone reserviors in near-shore subaqueous fan facies,Sha-si stage of north belt in Dongying depression[J].Journalof Oil and Gas Technology,2008,30(6):221-224.
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