黄骅坳陷南部滩海区中生界分布及目的层沉积相
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摘要
利用综合录井和三维地震等资料,讨论了黄骅坳陷南部滩海区中生界划分,分析了中生界展布规律,并对中生界主要目的层进行了测井相、地震相特征分析,在此基础上进行了沉积相和亚相特征研究。研究区残留中生界的分布主要受印支期南北向挤压、燕山中期SE-NW向挤压和新生代右阶右行拉分的综合作用,中、下侏罗统在研究区的北区复背斜地势低洼处分布,残留体长轴方向近东西向展布,主沉降中心靠近东部,残留厚度从四周向中心增厚。南区缺失中、下侏罗统,三叠纪在南区分布在EW向原古生界隐伏背斜之上。研究区中生界主要目的层为下侏罗统,属于温暖湿润气候条件下的曲流河沉积体系,曲流河沉积可分为河道亚相和河漫滩亚相,河道亚相砂砾岩成分和结构成熟度高,具有良好的储集性,河漫滩沼泽亚相一般为细颗粒沉积,通常作为盖层。
We discuss the stratigraphic division and study the distribution characteristic of Mesozoic of the south tidal land in Huanghua depression by using logging and seismic data.Then we probe into the lithofacies,logging facies and seismic facies of the Mesozoic strata.On the basis of these researches,we study the facies and sub-facies of the Mesozoic main target strata.Distributions of Mesozoic are mainly controlled by Indo-China SN extrusion,Yanshan SE-NW extrusion and Cenozoic dextral pull-dispartment.J1-2 is distributed only in low-lying multi-anticline in the north zone,and is absent in south zone of the research area.The long axes of the residual Mesozoic strata are EW trending.Triassic is distributed in the south zone,centralizing and concealed in Paleozoic anticline with EW trending.The depo-center of J1-2 is close to the east section and the residual depth of Mesozoic is incrassate from circumambiency to the deposit-center.The Mesozoic main target strata are lower-Jurassic which is of meander river facies formed in humid-,semi-humid weather condition.Meander river facies can be divided into stream channel sub-facies and alluvial flat sub-facies.The fabric and constituent maturity of conglomerate of stream channel sub-facies is fine,and so can act as reservoir,while the alluvial flat sub-facies is fine sediments and can be cap rock.
We discuss the stratigraphic division and study the distribution characteristic of Mesozoic of the south tidal land in Huanghua depression by using logging and seismic data.Then we probe into the lithofacies,logging facies and seismic facies of the Mesozoic strata.On the basis of these researches,we study the facies and sub-facies of the Mesozoic main target strata.Distributions of Mesozoic are mainly controlled by Indo-China SN extrusion,Yanshan SE-NW extrusion and Cenozoic dextral pull-dispartment.J1-2 is distributed only in low-lying multi-anticline in the north zone,and is absent in south zone of the research area.The long axes of the residual Mesozoic strata are EW trending.Triassic is distributed in the south zone,centralizing and concealed in Paleozoic anticline with EW trending.The depo-center of J1-2 is close to the east section and the residual depth of Mesozoic is incrassate from circumambiency to the deposit-center.The Mesozoic main target strata are lower-Jurassic which is of meander river facies formed in humid-,semi-humid weather condition.Meander river facies can be divided into stream channel sub-facies and alluvial flat sub-facies.The fabric and constituent maturity of conglomerate of stream channel sub-facies is fine,and so can act as reservoir,while the alluvial flat sub-facies is fine sediments and can be cap rock.
引文
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[2]杨玉龙.济阳坳陷中生界构造特征及储层预测方法[J].断块油气田,2004,11(5):26-30.[YANG Yu-long.Mesozoic forma-tion structure characters in Jiyang depression and reservoir prediction methods[J].Fault-Block&Gas Field,2004,11(5):26-28.]
[3]蒋飞虎,王秀英,张绍玲,等.中原油气区侏罗系地层特征[J].地层学杂志,2006,30(3):243-242.[JI ANG Fei-hu,WANG Xiu-ying,ZHANG Shao-ling,et al.Characterization of the Ju-rassic Systemin the petroliferous region of the Zhongyuan Oil-field,Henan[J].Journal of Stratigraphy.2006,30(3):243-242.]
[4]邓胜徽,姚益民,叶得泉,等.中国北方侏罗系(I)地层总述[M].北京:石油工业出版社,2003.[DENG Sheng-hui,YAO Yi-min,YE De-quan,et al.Jurassic Systeminthe North of Chi-na.Volume I.StratumInstruction[M].Beijing:PetroleumIn-dustry Press.2003.]
[5]李守军.山东中生界地层划分与对比[J].高校地质学报,1997,3(1):87-94.[LI Shou-jun.Stratigraphic division and correla-tion of the Mesozoic strata in Shandong[J].Geological Journal of China Universities.1997,3(1):87-94.]
[6]钟筱春,赵传本,杨时钟,等.中国北方侏罗系(II)古环境与油气[M].北京:石油工业出版社,2003.[ZHONG Xiao-chun,ZHAO Chuan-ben,YANG Shi-zhong,et al.Jurassic Systemin the North of China.Volume II.Paleoenvironment and oil-gas source[M].Beijing:PetroleumIndustry Press.2003.]
[7]于平,宋庆原.大港探区地层研究(中生界及中北区沙三、沙四段)[R].2001.[YU Ping,SONG Qing-yuan.Research on the strata in Dagang Oilfield(Mesozoic and ES3-ES4of North-Mid-dle region[R].2001.]
[8]牟泽辉,朱宏权,张克银,等.鄂尔多斯盆地南部中生界成油体系[M].北京:石油工业出版社,2001.[MOU Ze-hui,ZHU Hong-quan,ZHANG Ke-yin,et al.Petroleum system of the south of the Ordos Basin[M].Beijing:Petroleum Industry Press.2001.]
[9]杜旭东,李洪革,陆克政,等.华北地台东部及邻区中生代(J-K)原型盆地分布及成盆模式探讨[J].石油勘探与开发.1999,26(4):5-9.[DU Xu-dong,LI Hong-ge,LU Ke-zheng,et al.Dis-tribution of prototype basins in Huabei platformandits neigh-boring region and a discussion of basinformation model[J].Pe-troleum Exploration and Development.1999,26(4):5-9.]
[10]李三忠,许淑梅,单业华,等.渤海湾及邻区构造演化与盆地组合规律[J].海洋学报,2000,22(增刊):220-229.[LI San-zhong,XU Shu-mei,SHAN Ye-hua,et al.Tectonic evolution and basin assemblageinthe Bohai Bay andits neighbours.Ac-ta Oceanologica Sinica,2000,22(Supplement):220-229.]
[11]侯贵廷,钱祥麟,蔡东升.渤海湾盆地中、新生代构造演化研究[J].北京大学学报自然科学版,2001,37(6):845-851.[HOU Gui-ting,QI AN Xiang-lin,CAI Dong-sheng.Research on Mesozoic-Cenozoic tectonic evolution of the Bohai Bay Basin[J].Journal of Peking University.2001,37(6):845-851.]
[12]漆家福,周建勋,李建英,等.大港探区前第三系构造特征及构造演化[R].1999.[QI Jia-fu,ZHOUJian-xun,LI Jian-ying.Pre-Eocene tectonic characteristic and evolution of Dagang Oilfield[R].1999.]
[13]吴永平,付立新,杨池银,等.黄骅坳陷中生代构造演化对潜山油气成藏的影响[J].石油学报,2002,23(2):16-21.[WU Yong-ping,FU Li-xin,YANG Chi-yin,et al.Effect of Meso-zoic tectonic evolution on hydrocarbon accumulationin buried hills in Huanghua Depression[J].Acta Petrolei Sinica.2002,23(2):16-21.]
[14]金宠,李三忠,楼达,等.黄骅坳陷南部滩海区中生界构造与演化[J].海洋地质与第四纪地质.2007,27(1):101-110.[JI N Chong,LI San-zhong,LOU Da,et al.Structural pattern and e-volution of the Mesozoic strata in the Bohai Basin range:a case from southern shore of middle range of the Huanghua Depression[J].Marine Geology and Quaternary Geology.2007,27(1):101-110.]
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