Study On Sedimentary Characteristics Of Member1of Quantou Group In Wangfu Area

Under the theory of sedimentology, sequence stratigraphy, Seismic stratigraphy, Tectonicstratigraphy, Reservoir geology and Basin analysis, By the observation of core informationand adopt an integrated data of well log data、mud logging, seismic data to analysis andresearch on the sequence stratigraphy framework,sedimentary facies and the characteristics ofdistribution of sedimentary facies on the1st section of Cretaceous Quantou group in Wangfudepression.At first, identify the mark layer with the theory of high resolution sequence stratigraphic,by using of the controlling of marker bed，sedimentary cycle，thickness and combination ofwell data and seismic data，To establish isochrohal stratigraphic frame of high resolutionsequence in the study area. Then go further to divide the1st of Quantou Formation to5sandsets and18subzones. On the basis of stratigraphic classification, by using the study of Thesedimentary facies marks,Log facies marks and Seismic facies marks to Analysis thesedimentary system in study and three types of sedimentary facies is determined, includeseven types of subfacies and thirteen types of microfacies. The second, combine with theWangfu geological structure, using the analysis of individual well section of sedimentaryfacies, multiple wells section of sedimentary facies and substratum plane facies to elaboratedthe planar characteristics of distribution of sedimentary facies and sand bodies of study area;At last, Clarify the types of sedimentary facies, spatial distribution law and evolutioncharacteristics, analysis the relationship between the distribution of sedimentary facies andcontrolling factor in the study area.