【摘要】 中方接手哈萨克斯坦南图尔盖盆地勘探工作后,为了建立盆地统一的地层划分标准,研究快速而有效的地层对比方法,开展了本次侏罗系旋回地层划分对比研究.在统一的应力作用下沉积地层具有统一或相关的旋回特征,贯穿盆地发生、发展、消亡过程,这种旋回特征是地层对比的基本依据.本次研究以测井曲线旋回趋势分析为基础,通过对侏罗系地层岩性组合特征、测井曲线旋回趋势特征分析,孢粉化石资料标定和地震波组特征约束等方法,实现了全区侏罗系旋回地层划分对比,将侏罗系划分为七个三级旋回层序JSQ1~JSQ7,并建立了研究区等时地层格架,为进一步开展勘探工作奠定基础.该方法操作方便,综合应用地震、测井、钻井地质、古生物等资料,对比结果科学可靠,对盆地地层划分工作具有借鉴意义.更多还原

【Abstract】 In order to establish a unified basin stratigraphic division standards,and research a fast and effective method of stratigraphic correlation,carried out the study of Jurassic cyclostratigraphy division and comparative study,after China took over Kazakhstan South Turgai basin exploration work.Basin sedimentary cycles show similar characteristics under the unified regional stress throughout the basin occurrence,development,extinction process,this cyclicity characteristics is the fundamental basis for stratigraphic correlation.The study based on logs cycle trend analysis of Jurassic strata,and combined lithologic characteristics,logs cycles trend analysis,fossil pollen data calibration and seismic wave features constraint method,achieved the Jurassic stratigraphic cycles division and correlation result,then divided the Jurassic strata into seven cyclic sequence JSQ1 ~ JSQ7,established stratigraphic framework of the study area finally,which lay the foundation for further exploration work.The method is convenient to operate,and its comparison results is scientific and reliable cause integrating seismic,logging,drilling geology,paleontology information,It can be reference to the strata study of other basin.更多还原