A Method to Identify Low Resistivity Reservoir for the N1 Reservoir of Shizigou Oilfield of Northwest Qaidam

Low resistivity hydrocarbon reservoir is a special and concealment oil-gas layer, it is always misjudged as water layer because of it complex geological origin and the inherent limitations of resistivity logging to identify it. For difficulty to recognize the N1 reservoir low resistivity hydrocarbon reservoir of Shizigou oilfield of Northwest Qaidam basin, on the basis of origin study of the low resistivity reservoirs, making full use of the advantages of the new technology of the PNN logging, this paper proposed a method for the PNN logging to use cross plot and dual water model basins on the movable water analysis, which have good results.