准噶尔盆地车排子地区新近系沙湾组沉积特征
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摘要
根据岩心观察结果,结合钻井、地震及测井资料,对车排子地区新近系沙湾组沉积特征进行研究。结果表明:沙湾组发育辫状河三角洲-湖泊沉积体系,沉积物源来自北西方向的扎伊尔山;排2井区沙湾组二段下部砂体为水下分流河道沉积,而不是前人认为的滩坝沉积;沙湾组的平面沉积相呈北西-南东向展布,沉积演化从早到晚经历了辫状河三角洲前缘亚相、滨浅湖亚相和辫状河三角洲平原亚相的沉积时期;研究区水下分流河道和砂坝为有利储集相带。
According to core observation results,combining with drilling,seismic and logging data,the depositional characteristics of Shawan formation in Neogene of Chepaizi area were researched.The results show that the depositional system of Shawan formation is braided river delta-lacustrine facies and the sedimentary deposit comes from Zaire Hill at north west.The microfacies of well Pai 2 is underwater distributary channel deposit but not beach or bar.The sedimentary facies is typical of north west-south east distribution.Vertically,the sedimentary facies have undergone changes from braided river delta front subfacies to longshore shallow lacustrine subfacies to braided river delta plain subfacies.Underwater distributary channel deposit and sandbar are the favorable reservoir facies belt in the study area.
According to core observation results,combining with drilling,seismic and logging data,the depositional characteristics of Shawan formation in Neogene of Chepaizi area were researched.The results show that the depositional system of Shawan formation is braided river delta-lacustrine facies and the sedimentary deposit comes from Zaire Hill at north west.The microfacies of well Pai 2 is underwater distributary channel deposit but not beach or bar.The sedimentary facies is typical of north west-south east distribution.Vertically,the sedimentary facies have undergone changes from braided river delta front subfacies to longshore shallow lacustrine subfacies to braided river delta plain subfacies.Underwater distributary channel deposit and sandbar are the favorable reservoir facies belt in the study area.
引文
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[8]张关龙,陈世悦,王海方,等.济阳坳陷石炭-二叠系沉积特征及岩相古地理演化[J].中国石油大学学报:自然科学版,2009,33(3):11-17.ZHANG Guan-long,CHENShi-yue,WANG Hai-fang,etal.Sedimentary characteristics and lithofacies paleogeog-raphy evolution of Pero-carboniferous system in Jiyang de-pression[J].Journal of China University of Petroleum(E-dition of Natural Science),2009,33(3):11-17.
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[10]任怀强,刘金华,杨少春,等.吐哈盆地红台地区辫状河三角洲砂岩储层微观特征[J].中国石油大学学报:自然科学版,2008,32(5):12-17.REN Huai-qiang,LIU Jin-hua,YANG Shao-chun,etal.Sandstone reservoir microscopic characteristics ofbraid delta of Hongtai area in Tuha Basin[J].Journal ofChina University of Petroleum(Edition of Natural Sci-ence),2008,32(5):12-17.
[11]张希明,刘青芳.塔北地区辫状三角洲沉积特征及油气勘探意义[J].石油勘探与开发,1999,26(1):21-24.ZHANG Xi-ming,LIU Qing-fang.Depositional charac-teristics of braided river delta in northern Tarim Basinand its significance in petroleum exploration[J].Petro-leum Exploration and Development,1999,26(1):21-24.
[12]向奎.准噶尔盆地车排子地区下切谷沉积体系及有利勘探方向[J].中国石油大学学报:自然科学版,2007,31(6):1-5.XIANG Kui.Entrenched valley depositional system andadvantageous exploration direction of Chepaizi area inJunggar Basin[J].Journal of China University of Petro-leum(Edition of Natural Science),2007,31(6):1-5.
[2]董臣强,王军.准噶尔盆地车排子地区新近系沙湾组一砂组油层地震特征分析[J].石油地球物理勘探,2007,42(4):445-447.DONG Chen-qiang,WANG Jun.Analysis on seismic fea-ture of reservoir in Neogene Shawan formation first oil-sand layer in Chepaizi area of Junggar Basin[J].Oil Ge-ophysical Prospecting,2007,42(4):445-447.
[3]支东明,赵卫军,关键,等.准噶尔盆地车排子地区新近系沙湾组油层特征[J].天然气勘探与开发,2007,30(3):5-8.ZHI Dong-ming,ZHAO Wei-jun,GUAN Jian,et al.Reservoir characteristics of Neogene Shawan formation inChepaizi region,Junggar Basin[J].Natural Gas Explora-tion and Development,2007,30(3):5-8.
[4]马沛东.准噶尔盆地车排子地区上第三系砂体识别方法[J].石油物探,2006,45(5):487-491.MA Pei-dong.Method for recognizing sandstone bodies ofupper Tertiary formation in Chepaizi area,Junggar Basin[J].Geophysical Prospecting for Petroleum,2006,45(5):487-491.
[5]宋传春.准噶尔盆地车排子地区“三多”成藏特征分析[J].油气地球物理,2007,5(1):47-49.SONG Chuan-chun.The reservoir forming feature analysisof the multiple oil-bearing series,multiple reservoir typesand multiple oilness grades in Chepaizi area,Juggar Ba-sin[J].Petroleum Geophysics,2007,5(1):47-49.
[6]薛良清,GALLOWAY W E.扇三角洲、辫状河三角洲与三角洲体系的分类[J].地质学报,1991,65(2):141-153.XUE Liang-qing,GALLOWAY W E.Fan-delta,braiddelta and the classification of delta systems[J].ActaGeologica Sinica,1991,65(2):141-153.
[7]王海林,田家祥.不同类型三角洲特征探讨[J].大庆石油学院学报,1994,18(4):135-139.WANG Hai-lin,TIAN Jia-xiang.Discussions on charac-teristics of different deltas[J].Journal of Daqing Petrole-um Institute,1994,18(4):135-139.
[8]张关龙,陈世悦,王海方,等.济阳坳陷石炭-二叠系沉积特征及岩相古地理演化[J].中国石油大学学报:自然科学版,2009,33(3):11-17.ZHANG Guan-long,CHENShi-yue,WANG Hai-fang,etal.Sedimentary characteristics and lithofacies paleogeog-raphy evolution of Pero-carboniferous system in Jiyang de-pression[J].Journal of China University of Petroleum(E-dition of Natural Science),2009,33(3):11-17.
[9]楼章华,兰翔,卢庆梅,等.地形、气候与湖面波动对浅水三角洲沉积环境的控制作用:以松辽盆地北部东区葡萄花油层为例[J].地质学报,1999,73(1):83-91.LOU Zhang-hua,LAN Xiang,LU Qing-mei,et al.Con-trols of the topography,climate and lake level fluctuationon the depositional environment of a shallow-water delta:a case study of the Cretaceous Putaohua resenvoir in thenorthern part of Songliao Basin[J].Acta Geologica Sini-ca,1999,73(1):83-91.
[10]任怀强,刘金华,杨少春,等.吐哈盆地红台地区辫状河三角洲砂岩储层微观特征[J].中国石油大学学报:自然科学版,2008,32(5):12-17.REN Huai-qiang,LIU Jin-hua,YANG Shao-chun,etal.Sandstone reservoir microscopic characteristics ofbraid delta of Hongtai area in Tuha Basin[J].Journal ofChina University of Petroleum(Edition of Natural Sci-ence),2008,32(5):12-17.
[11]张希明,刘青芳.塔北地区辫状三角洲沉积特征及油气勘探意义[J].石油勘探与开发,1999,26(1):21-24.ZHANG Xi-ming,LIU Qing-fang.Depositional charac-teristics of braided river delta in northern Tarim Basinand its significance in petroleum exploration[J].Petro-leum Exploration and Development,1999,26(1):21-24.
[12]向奎.准噶尔盆地车排子地区下切谷沉积体系及有利勘探方向[J].中国石油大学学报:自然科学版,2007,31(6):1-5.XIANG Kui.Entrenched valley depositional system andadvantageous exploration direction of Chepaizi area inJunggar Basin[J].Journal of China University of Petro-leum(Edition of Natural Science),2007,31(6):1-5.
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