依─舒地堑下第三系地层格架与成因单元
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摘要
依─舒地堑是大庆油田的主探区之一,下第三系是主要勘探目的层,准确地建立地层格架是油气勘探的基础。在占有大量资料的基础上,采用数理统计分析方法,建立了测井曲线、微量元素分层模式,有效地解决了测井曲线局部干扰和地层分析实验样品量少的问题。在综合考虑6种因素的基础上,以生物层序和构造层序单元为基础,建立了依─舒地堑的整体地层格架,提出了依─舒地堑统一地层格架对比方案,指出T5、T3、T1地震反射层具有构造旋回意义,代表盆地演化的不同阶段,T4、T2地震反射层具有沉积学以及气候层序的意义。
The Yi-Shu graben is one of major exploring areas,along with the major exploring targets of Paleogene system in Daqing oil field.Building up a stratigraphic framework accurately is the foundation of oil exploration.A kind of layering pattern is built up depending on a great deal of data and using mathematical statistics to analyse well log and trace elements.The method solves the problems of local interfering well log and of lacking layer samples efficiently.With the six factors considered comprehensively,the stratigraphic framework of the Yi-Shu graben is set up based on biosequence and tectonic sequence and a integral and comparative program of the Yi-Shu graben is put forward.T5,T3,T1 seismic reflective layers represent tectonic cycles of different stages in the basin development and T4,T2 seismic reflective layers represent sedimentary and climatic sequence.
The Yi-Shu graben is one of major exploring areas,along with the major exploring targets of Paleogene system in Daqing oil field.Building up a stratigraphic framework accurately is the foundation of oil exploration.A kind of layering pattern is built up depending on a great deal of data and using mathematical statistics to analyse well log and trace elements.The method solves the problems of local interfering well log and of lacking layer samples efficiently.With the six factors considered comprehensively,the stratigraphic framework of the Yi-Shu graben is set up based on biosequence and tectonic sequence and a integral and comparative program of the Yi-Shu graben is put forward.T5,T3,T1 seismic reflective layers represent tectonic cycles of different stages in the basin development and T4,T2 seismic reflective layers represent sedimentary and climatic sequence.
引文
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[3]郭巍,刘招君,董清水.断陷湖盆层序地层格架中的油气聚集规律以松辽盆地为例[J].吉林大学学报(地球科学版),2002,32(3):233 237.GUO Wei,LIU Zhao-jun,DONG Qing-shui.Oil andgas gathering rule in the sequence stratzgraphic frameof fault depression lacustrine basin An example fromSongliao Basin[J].Journal of Jilin University(EarthScience Edition),2002,32(3):233 237.
[4]高瑞祺,赵传本,乔秀云,等.松辽盆地白垩纪石油地层孢粉学[M].北京:地质出版社,1999.GAO Rui-qi,ZHAO Chuan-ben,QIAO Xiu-yun,etal.Cretaceous oil strata palynology from Songliao Ba-sin[M].Beijing:Geological Publishing House,1999.
[5]万传彪,任延广,迟元林,等.海拉尔盆地孢粉组合及其地层时代[J].长春科技大学学报,2000,30(增刊):60 65.WAN Chuan-biao,REN Yan-guang,CHI Yuan-lin,etal.Spore-pollen assemblages and its stratigraphic ageof the Hailaer Basin,Inner Mongolia[J].Journal ofChangchun University of Science and Technology,2000,30(Sup.):60 65.
[6]谭廷栋,廖明书,郝志兴.测井解释基础与数据采集[M].北京:石油工业出版社,1992.TAN Ting-dong,LIAO Ming-shu,HAO Zhi-xing.Fundamentals of well-log interpretation and the ac-quisition of logging data[M].Beijing:Petroleum In-dustry Press,1992.
[7]曾慕.油田应用数学[M].北京:石油工业出版社,1989.ZENG Mu.Oil field applied mathematics[M].Beijing:Petroleum Industry Press,1989.
[8]Green P F.The relationship between track shorteningand fission track age reduction in apatite:combined in-fluences of inherent instability,annealing anisotropy,length bias and system calibration[J].Earth Planet SciLett,1988,89:335 52.
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