Geology Research Of The First Member Of Nantun Formation In Beier Oilfield

Baer oilfield is located in central is located in Bei Baer sag in Hailar basin.The South basin belongs to a complex fault block,with various types of reservoir,reservoir,reservoir types,oil types,geological characteristics of deep buried reservoirs.Oil is main problems: one is multi source,multi period tectonic movement to mark layer is not obvious,smallcomparedlayer difficult;two are deep burial,Sawa Sa conglomerate reservoir interaction leads to the seismic reflection axis is not obvious,small fault interpretation is difficult;three types of sedimentary facies and sedimentary microfacies.Difficult to describe facies.Based on geological research as the main body,the comprehensive application of geology,seismic,coring,logging,core analysis data,the high resolution sequence stratigraphy,sedimentology,structural geology,development geology and other disciplines theory,comprehensive integration of mutual penetration in geological thinking under the unified,including the research of fine structure interpretation,small division and contrast,microfaces,draws the following conclusions and understanding: Take the "restoration of the deposition process,a small layer of track segments development wells sequence interface and sedimentary cycle comparison,determine the missing interval" method,completed in Beizhong oilfield K1n1 oil area development wells stratigraphic division and correlation.Well,the earthquake combined to carry out the fine structural interpretation,the application of coherent and three mixed phase frequency and other technology to identify small faults,adopt fault combination method of earthquake control form,well location,model combination "of the breakpoint combination and correction,improve the accuracy of structural interpretation.Baer oil reservoir is a South Lake fan delta depositional system with multiple source characteristics,the main reservoir in the fan delta front underwater distributary channel.The expressing method of human body model are analyzed and studied in this paper and selected.