Prediction Of Song Nan Haituozi-Dabusu High-resolution Stratigraphy And Subtle Traps

This report based on a lot of drilling, well logging and seismic data, made useof high resolution sequence stratigraphy theory and analysis,techniques datumreference surface, carry on the Songliao southern Haituozi-Dabusu layer sequenceStratigraphy and Subtle reservoir prediction and evaluation research.In view of undevelopmental characteristics of the unconformity surface,introducing the concept of "Turnaround Surface". Through the identification of thevarious types of internal conversion surface, divided Quan4-Yaojia group into fivelong-term base level cycles and nine medium-term cycles. In mid-term unit, builtresearch division of high resolution sequence stratigraphy, analyzed developmentcharacteristics of the interior layer of sequence stratigraphy. Carried on fivesequence classification in key areas, compiled sedimentary microfacies distributionmap which is unit by sand group (or layers),defined the distribution of sedimentaryfacies within the high-frequency sequences. Based on reservoir sand bodies, referedto other reservoir conditions, studied the main hidden reservoir of the study area.Predicted the subtle trap type and developmental favorable area for differentsequences.Put forward exploration ideas of different subtle traps,effectively guidethe exploration of subtle traps in the study area. Put forward6recommendation welllocatione of valuation well.