梨树断陷苏家屯地区营城组沉积特征
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摘要
松辽盆地梨树断陷苏家屯地区营城组具有形成油气藏的良好条件,且研究程度低。为了研究其沉积微相与砂体储集条件,以指明有利储集相带,应用沉积学与高分辨率层序地层序理论方法,通过分析岩心、录井、测井、地震资料、古地貌特征,认为研究区主要发育湖泊相和辫状河三角洲相,并进一步识别出了分流河道、水下分流河道、水下分流间湾、河口坝、远砂坝、席状砂、泥坪、滩坝等8种沉积微相,并描述了主要沉积微相砂体特征。同时,将营城组划分为4段、6个四级层序和7个砂组,阐明了各砂组沉积相分布特征和时空演化规律。研究认为,营一段末期(SG2)湖侵至最大湖泛面,沉积于其上的SG3砂组进积体系是最有利的油气储集层。沉积微相平面展布与储层分析表明,该区存在两支主辫状水道,分流河道砂体叠置且储层物性好,其与后期鼻状构造相组合是构造-岩性圈闭与岩性圈闭发育的最有利区。
The Yingcheng Formation in Sujiatun area,Lishu Rift in Songliao Basin,has good conditions for the formation of petroleum reservoirs.However,the level of research is low in this area.The paper is to identify favorable reservoir facies belt through study of sedimentary microfacies and sandstone reservoir conditions.The theories of sedimentoloy and high-resolution sequence stratigraphy were applied and the cores,mud logging,well logging,seismic data and palaeogeomorphology data were integrated.The study revealed that lacustrine and braided river delta sedimentary facies are predominant in the study area.Furthermore,eight sedimentary microfacies were identified,including distributary channel,underwater distributary channel,underwater interdistributary,month bar,distal bar,sheet-like sand,mudflats and bank bars.And the main characteristics of sandstones of sedimentary microfacies are described.The Yingcheng Formation was divided into 4 Members,6 fourth-order sequences and 7 sand groups.The sedimentary facies distribution and their temporal and spatial evolution of each sand group(SG) were discussed.The transgressive surface to maximum lake flooding surface occurred at the end of deposition of the Ying-1 Member(SG2),and the overlying SG3 is the most favorable reservoir.Analyses of plain distribution of sedimentary facies and reservoir reveal two main braided channels with good stacked distributary channel sand bodies and reservoir properties.The main braided channels in combination with late nose structure are the most favorable areas for the development of structural-lithologic traps and lithology traps.
The Yingcheng Formation in Sujiatun area,Lishu Rift in Songliao Basin,has good conditions for the formation of petroleum reservoirs.However,the level of research is low in this area.The paper is to identify favorable reservoir facies belt through study of sedimentary microfacies and sandstone reservoir conditions.The theories of sedimentoloy and high-resolution sequence stratigraphy were applied and the cores,mud logging,well logging,seismic data and palaeogeomorphology data were integrated.The study revealed that lacustrine and braided river delta sedimentary facies are predominant in the study area.Furthermore,eight sedimentary microfacies were identified,including distributary channel,underwater distributary channel,underwater interdistributary,month bar,distal bar,sheet-like sand,mudflats and bank bars.And the main characteristics of sandstones of sedimentary microfacies are described.The Yingcheng Formation was divided into 4 Members,6 fourth-order sequences and 7 sand groups.The sedimentary facies distribution and their temporal and spatial evolution of each sand group(SG) were discussed.The transgressive surface to maximum lake flooding surface occurred at the end of deposition of the Ying-1 Member(SG2),and the overlying SG3 is the most favorable reservoir.Analyses of plain distribution of sedimentary facies and reservoir reveal two main braided channels with good stacked distributary channel sand bodies and reservoir properties.The main braided channels in combination with late nose structure are the most favorable areas for the development of structural-lithologic traps and lithology traps.
引文
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[2]曹鉴华,姜传金,赵福海,等.松辽盆地北部徐家围子断陷丰乐地区深层营城组有利火山岩储集体预测[J].石油与天然气地质,2012,33(4):520-525.Cao Jianhua,Jiang Chuanjin,Zhao Fuhai,et al.Volcanic reservoirprediction of Yingcheng Formation in Fengle area,Xujiaweizi faultdepression,northern Songliao Basin[J].Oil&Gas Geology,2012,33(4):520-525.
[3]高东.十屋断陷含油气系统及勘探潜力分析[J].石油物探,2004,43(2):196-201.Gao Dong.Petroleum system in Shiwu Faulted Sag and analysis of ex-ploration prospect[J].Geophysical Prospecting for Petroleum,2004,43(2):196-201.
[4]王德海,郭峰,任国选,等.松辽盆地东南隆起区断层与油气运移及成藏[J].石油实验地质,2006,28(4):1-5.Wang Dehai,Guo Feng,Ren Guoxuan,et al.The relationship betweenfaults and oil-gas migration and reservoiring in the southeast uplift ofthe Songliao Basin[J].Petroleum Geology&Experiment,2006,28(4):1-5.
[5]赵勇刚,张树林.松南十屋断陷深层油气成藏条件与模式研究[J].海洋石油,2009,29(1):21-25.Zhao Yonggang,Zhang Shulin.Study on petroleum accumulation ofdeep zone in Shiwu Fault Depression,south of Songliao Basin[J].Offshore Oil,2009,29(1):21-25.
[6]李晓东,刘福春,王德海,等.十屋断陷皮家地区油气成藏与分布规律研究[J].录井技术,2001,12(3):35-40.Li Xiaodong,Liu Fuchun,Wang Dehai,et al.The research for hydro-carbon reservoir&its distribution regulation of Shiwu Rift in PijiaArea[J].Logging Technology,2001,12(3):35-40.
[7]赵德力,肖学,魏分粮,等.十屋断陷北部营城组油气成藏主控因素探讨[J].石油天然气学报,2009,31(4):45-48.Zhao Deli,Xiao Xue,Wei Fenliang,et al.On the main controlling fac-tors of hydrocarbon accumulation in Yingcheng Formation in the Northof Shiwu Fault Depression[J].Journal of Oil and Gas Technology,2009,31(4):45-48.
[8]张玉明.松辽盆地南部十屋断陷北部深层油气成藏条件[J].石油天然气学报,2006,28(3):53-56.Zhang Yuming.Conditions of hydrocarbon accumulation of deepreservoirs in the North of Shiwu Fault Depression in the South ofSongliao Basin[J].Journal of Oil and Gas Technology,2006,28(3):53-56.
[9]Patranabis-Deb S,Chaudhuri A K.A retreating fan-delta system inthe Neoproterozoic Chattisgarh rift basin,central India:major controlson its evolution[J].AAPG Bulletin,2007,91(6),785-808.
[10]董福湘.松辽盆地十屋断陷沙河子组—营城组扇三角洲和辫状河三角洲发育的控制因素研究[D].长春:吉林大学,2004.Dong Fuxiang.Controlling factors of fan-deltaic and braided river-del-taic development in the Shahezi-Yingcheng Formation of Shiwu faulted-basin,Songliao Basin[D].Changchun:Jilin University,2004.
[11]邓宏文,王红亮,李熙喆.层序地层基准面的识别、对比技术及应用[J].石油与天然气地质,1996,17(3):177-184.Deng Hongwen,Wang Hongliang,Li Xizhe.Identification and correla-tion techniques of sequence stratigraphic base-levels and their appli-cation[J].Oil&Gas Geology,1996,17(3):177-184.
[12]王红亮,邓宏文.地层基准面原理在湖相储层预测中的应用[J].石油与天然气地质,1997,18(2):96-102.Wang Hongliang,Deng Hongwen.Application of base-level principlein prediction of lacustrine reservoirs[J].Oil&Gas Geology,1997,18(2):96-102.
[13]林畅松,刘景彦,刘丽军,等.高精度层序地层分析:建立沉积相和储层规模的等时地层格架[J].现代地质,2002,16(3):276-281.Lin Changsong,Liu Jingyan,Liu Lijun,et al.High resolutionsequence stratigraghy analysis:construction of chrono stratigraphicsequence framework on facies and reservoir scale[J].Geoscience,2002,16(3):276-281.
[14]田世存,刘国臣,汤磊,等.南苏门答腊盆地B区块层序地层格架及有利成藏带[J].石油与天然气地质,2013,34(1):68-76.Tian Shicun,Liu Guochen,Tang Lei,et al.Sequence stratigraphicframework and play fairways in Block B of the South Sumatra Basin[J].Oil&Gas Geology,2013,34(1):68-76.
[15]王红亮.“转换面”的概念及其层序地层学意义[J].地学前缘,2008,15(2):35-42.Wang Hongliang.Concept of“Turnaround Surface”and its signifi-cance to sequence stratigraphy[J].Earth Science Frontiers,2008,15(2):35-42.
[16]Ritchie B D,Gawthorpe R L,Hardy S.Three dimensional numericalmodeling of deltaic depositional sequence 1:influence of the rate andmagnitude of sea-level change[J].Journal of Sedimentary Reservoir,2004,74:203-220.
[17]Ritchie B D,Gawthorpe R L,Hardy S.Three dimensional numericalmodeling of deltaic depositional sequence 2:influence of local con-trols[J].Journal of Sedimentary Reservoir,2004,74:221-238.
[18]陈方鸿,王树平,李志政.三维可视化地震相分析在沉积相研究中的应用[J].石油勘探与开发,2005,32(3):73-75Chen Fanghong,Wang Shuping,Li Zhizheng.Waveform classificationseismic facies analysis in sedimentary facies research[J].PetroleumExploration and Development,2005,32(3):73-75.
[19]王亮,牛成民,杨波等.莱州湾凹陷沙三段含油气系统与有利勘探方向[J].断块油气田,2011,18(5):545-548.Wang Liang,Niu Chengmin,Yang Bo,et al.Petroleum system and fa-vorable exploration targets of the third member of Shahejie Formationin Laizhouwan Depression[J].Fault-Block Oil&Gas Field,2011,18(5):545-548.
[20]秦敬,张金亮.安塞油田杏河地区长6油层沉积微相研究[J].西北地质,2004,37(4):15-21.Qin Jing,Zhang Jinliang.Sedimentary microfacies of Chang-6 reser-voir of Yanchang Formation in Xinghe area of Ansai Oilfield[J].North Western Geology,2004,37(4):15-21.
[21]钟大康,周立建,姚泾利,等.储层岩石学特征对成岩作用及孔隙发育的影响——以鄂尔多斯盆地陇东地区三叠系延长组为例[J].石油与天然气地质,2012,33(6):890-899.Zhong Dakang,Zhou Lijian,Yao Jinli,et al.Influences of petrologicfeatures on diagenesis and pore development:an example from theTriassic Yanchang Formation in Longdong area,Ordos Basin[J].Oil&Gas Geology,2012,33(6):890-899.
[22]李潍莲,刘震,王伟,等.镇泾地区延长组八段低渗岩性油藏形成过程动态分析[J].石油与天然气地质,2012,33(6):845-852.Li Weilian,Liu Zhen,Wang Wei,et al.Hydrocarbon accumulationprocess of Chang-8 low-permeability lithological reservoirs in Zhen-jing area,Ordos Basin[J].Oil&Gas Geology,2012,33(6):845-852.
[23]刘双莲,李浩,周小鹰.大牛地气田大12—大66井区沉积微相与储层产能关系[J].石油与天然气地质,2012,33(1):45-49.Liu Shuanglian,Li Hao,Zhou Xiaoying.Relationship between sedi-mentary microfacies and reservoir productivity in Da12-Da66 well-block,Daniudi gas field[J].Oil&Gas Geology,2012,33(1):45-49.
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