Reservoir Connectivity in the Lulehe Formation of the Qie-6 Block of Kunbei Oilfield

Based on logging,reservoir physical property,the permeability attribute of 3Dgeological model and injection-production data,this paper studied the reservoir connectivity in the Lulehe Formation of Qie-6block of Kunbei Oilfield from three aspects-logging curve characteristics of reservoir,features of reservoir architecture and injection-production information.The result shows that:Logging curves are boxshaped between the two wells and represent good reservoir connectivity between the two wells;while the finger-shaped logging curves represent the connectivity is changeable;bell-shaped representing the connectivity underside of the reservoir is good and the upper is poor;funnel-shaped representing the upper is good and the underside is poor.The tooth-shaped logging curves represent poor connectivity and when different electrical characteristics are found between the two wells,reservoir connectivity is poor,but when natural potential negative anomally is obviously and natural gamma is low,the curve is smoother,and the connectivity is better.Underwater distributary channel and mouth bar single architecture element have better connectivity,while sheet sand architecture element connectivity is either good or poor,and other architecture element is poor;underwater distributary channel and mouth bar,underwater distributary channel and sheet sand composite architecture element is good,other composites are poor;aggradation-stacked is good,other types are poor.Liquids production up the greater,reservoir connectivity is better between injection and production wells.