准噶尔盆地红山嘴地区侏罗系八道湾组沉积特征及其演化规律
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摘要
红山嘴地区侏罗系八道湾组是准噶尔盆地西北缘的重要油气储层。基于岩心观察、测井和地震资料,探讨研究区的砂体展布特征及其演化规律。结果表明:侏罗系八道湾组属于温暖潮湿环境下的扇三角洲沉积体系,可划分为MSC1和MSC2两个完整的中期旋回,共识别出块状层理砾岩相、槽状交错层理砾岩相、板状交错层理砾岩相等10种岩相,建立辫状河道、辫流坝、水下分流河道等5种反映沉积成因的垂向序列;主要发育扇三角洲平原和扇三角洲前缘亚相,发育辫状河道、辫流坝、沼泽、水下分流河道和水下分流间湾微相。研究区侏罗系八道湾组沉积期,构造较为稳定,物源来自西北和西南两个方向,沉积砂体展布与演化主要受控于物源供给强度与基准面变化。
Hongshanzui Area is one of the major oil accumulation zones in the northwestern margin of Junggar Basin,in which the reservoir in Badaowan Formation occupies an important place in the Jurassic.Based on core observation,well log and seismic data,this study analyses the spatial distribution and evolutions of sand body.The result shows that the Badaowan Formation belongs to fan delta system developed in warm and wet climate.The sequence stratigraphy was divided into 2 medium-term base level cycles,namely MSC1 and MSC2.In this study ten lithofacies and five typical sedimentary association sequences are established,reflecting different depositional processes respectively,including massive bedding conglomerate facies,trough bedded conglomerate facies,tabular cross-bedding conglomerate facies,parallel bedded sandstone facies,coal facies,braided channel association,braided channel bar association,underwater distributary channel association,etc.The sedimentary subfacies in the region includefan delta plain and fan delta front,which can be divided into braided channel,braided channel bar,marsh,underwater distributary channel and underwater interdistributary bay.The tectonic background is steady during the sedimentation of Badaowan Formation,and control factors of sand distribution and evolution mainly supply strength of the two directions of provenance and fluctuation of base level.
Hongshanzui Area is one of the major oil accumulation zones in the northwestern margin of Junggar Basin,in which the reservoir in Badaowan Formation occupies an important place in the Jurassic.Based on core observation,well log and seismic data,this study analyses the spatial distribution and evolutions of sand body.The result shows that the Badaowan Formation belongs to fan delta system developed in warm and wet climate.The sequence stratigraphy was divided into 2 medium-term base level cycles,namely MSC1 and MSC2.In this study ten lithofacies and five typical sedimentary association sequences are established,reflecting different depositional processes respectively,including massive bedding conglomerate facies,trough bedded conglomerate facies,tabular cross-bedding conglomerate facies,parallel bedded sandstone facies,coal facies,braided channel association,braided channel bar association,underwater distributary channel association,etc.The sedimentary subfacies in the region includefan delta plain and fan delta front,which can be divided into braided channel,braided channel bar,marsh,underwater distributary channel and underwater interdistributary bay.The tectonic background is steady during the sedimentation of Badaowan Formation,and control factors of sand distribution and evolution mainly supply strength of the two directions of provenance and fluctuation of base level.
引文
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[2]邹才能,陶士振,薛叔浩.“相控论”的内涵及其勘探意义[J].石油勘探与开发,2005,32(6):7-12.ZOU Caineng,TAO Shizhen,XUE Shuhao.Connotation of"Facies Control Theory"and its significance for exploration[J].Petroleum Exploration and Development,2005,32(6):7-12.
[3]程亮,关利军,王振奇,等.红山嘴地区三叠系油气成藏主控因素[J].断块油气田,2008,15(6):28-31.CHENG Liang,GUAN Lijun,WANG Zhenqi,et al.Main controlling factors of hydrocarbon accumulation in Triassic of Hongshanzui Area,Junggar Basin[J].Fault-Block Oil &Gas Field,2008,15(6):28-31.
[4]蔚远江,李德生,胡素云,等.准噶尔盆地西北缘扇体形成演化与扇体油气藏勘探[J].地球学报,2007,28(1):62-71.YU Yuanjiang,LI Desheng,HU Suyun,et al.Fans sedimentation and exploration direction of fan hydrocarbon reservoirs in foreland thrust belt of the Northwestern Junggar Basin[J].Acta Geoscientica Sinica,2007,28(1):62-71.
[5]王雅宁,鲍志东,张尚锋,等.准噶尔盆地红车地区侏罗系沉积特征与沉积环境演化[J].科技导报,2011,29(2):28-35.WANG Yaning,BAO Zhidong,ZHANG Shangfeng,et al.Sedimentary characteristics and environmental changes of Jurassic in Hongche Area,Junggar Basin[J].Science &Technology Review,2011,29(2):28-35.
[6]郑超,李静,高达,等.沙湾凹陷百口泉组层序地层及沉积体系研究[J].特种油气藏,2017,24(6):48-54.ZHENG Chao,LI Jing,GAO Da,et al.Sequence stratigraphic framework and depositional distribution of Baikouquan Formation in Shawan Sag[J].Special Oil &Gas Reservoirs,2017,24(6):48-54.
[7]祁利祺,鲍志东,鲜本忠,等.准噶尔盆地西北缘构造变换带及其对中生界沉积的控制[J].新疆石油地质,2009,30(1):29-32.QI Liqi,BAO Zhidong,XIAN Benzhong,et al.Structural transform zone and its control of Mesozoic deposits in northwestern margin of Junggar Basin[J].Xinjiang Petroleum Geology,2009,30(1):29-32.
[8]史基安,何周,丁超,等.准噶尔盆地西北缘克百地区二叠系沉积特征及沉积模式[J].沉积学报,2010,28(5):962-968.SHI Ji'an,HE Zhou,DING Chao,et al.Sedimentary characteristics and model of Permian system in Ke-Bai Area in the northwestern margin of Jungar Basin[J].Acta Sedimentologica Sinica,2010,28(5):962-968.
[9]彭飚,金振奎,朱小二,等.扇三角洲沉积模式探讨:以准噶尔盆地玛北地区下三叠统百口泉组为例[J].古地理学报,2017,19(2):315-326.PENG Biao,JIN Zhenkui,ZHU Xiaoer,et al.Discussion about depositional models of fan delta:a case study from the Lower Triassic Baikouquan Formation in Mabei Area,Junggar Basin[J].Journal of Palaeogeography,2017,19(2):315-326.
[10]袁晓光,李维锋,张宝露,等.玛北斜坡百口泉组沉积相与有利储层分布[J].特种油气藏,2015,22(4):70-73.YUAN Xiaoguang,LI Weifeng,ZHANG Baolu,et al.Sedimentary facies and distribution of favorable reservoir of Baikouquan Formation in Mabei Slope[J].Special Oil &Gas Reservoirs,2015,22(4):70-73.
[11]贺子倩,张尚锋,淡卫东,等.准噶尔盆地红车断裂带侏罗系层序地层特征[J].石油天然气学报,2008,30(1):202-205.HE Ziqian,ZHANG Shangfeng,DAN Weidong,et al.Characteristics of Jurassic sequence stratigraphy in Hongche Fault Zone of Junggar Basin[J].Journal of Oil and Gas Technology,2008,30(1):202-205.
[12]任国选,侯读杰,史玉玲,等.准噶尔盆地西北缘红山嘴油田地层水特征与油气藏聚集关系[J].石油与天然气地质,2013,34(2):179-184.REN Guoxuan,HOU Dujie,SHI Yuling,et al.Relationship between formation water characteristics and hydrocarbon accumulation in Hongshangzui Oilfield in the northwestern margin of the Junggar Basin[J].Oil &Gas Geology,2013,34(2):179-184.
[13]高阳,于兴河,黄丁杰,等.准噶尔盆地红山嘴地区克拉玛依组辫状河三角洲沉积特征[J].东北石油大学学报,2016,40(4):35-44.GAO Yang,YU Xinghe,HUANG Dingjie,et al.Depositional characteristics of braided-river delta in Karamay Formation of Hongshanzui Area,Junggar Basin[J].Journal of Northeast Petroleum University,2016,40(4):35-44.
[14]雷振宇,卞德智,杜社宽,等.准噶尔盆地西北缘扇体形成特征及油气分布规律[J].石油学报,2005,26(1):8-12.LEI Zhenyu,BIAN Dezhi,DU Shekuan,et al.Characteristics of fan forming and oil-gas distribution in west-north margin of Junggar Basin[J].Acta Petrolei Sinica,2005,26(1):8-12.
[15]董大伟,李理,王晓蕾,等.准噶尔盆地西缘车排子凸起构造演化及断层形成机制[J].吉林大学学报(地球科学版),2015,45(4):1132-1141.DONG Dawei,LI Li,WANG Xiaolei,et al.Structural evolution and dislocation mechanism of Western Margin Chepaizi Uplift of Junggar Basin[J].Journal of Jilin University(Earth Science Edition),2015,45(4):1132-1141.
[16]胡宗全,朱筱敏,彭勇民.准噶尔盆地西北缘车排子地区侏罗系物源及古水流分析[J].古地理学报,2001,3(3):49-54.HU Zongquan,ZHU Xiaomin,PENG Yongmin.Analysis of provenance and palaeocurrent direction of Jurassic at Chepaizi Region in northwest edge of Junggar Basin[J].Journal of Palaeogeography,2001,3(3):49-54.
[17]邓宏文.高分辨率层序地层学应用中的问题探析[J].古地理学报,2009,11(5):471-480.DENG Hongwen.Discussion on problems of applying high resolution sequence stratigraphy[J].Journal of Palaeogeography,2009,11(5):471-480.
[18]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 Chaorong.Grade division of base-level cycles of terrigenous basin and its implications[J].Acta Sedimentologica Sinica,2001,19(2):249-255.
[19]谭程鹏,于兴河,李胜利,等.准噶尔盆地南缘四棵树剖面八道湾组扇三角洲沉积特征[J].现代地质,2014,28(1):181-189.TAN Chengpeng,YU Xinghe,LI Shengli,et al.Sedimentary characteristics of fan delta of the Badaowan Formation,Sikeshu Section,Southern Junggar Basin[J].Geoscience,2014,28(1):181-189.
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