Abstract：There exists obvious polarization anomaly above CE oilfield of Junggar basin,the polarization is greater than 10%, the electromagnetic phase is greater than 2.0 MRD,but the resistivity is gener-ally less than 8.0Ω·m,so the method of complex apparent resistivity (CR) used for exploration and prediction of oil/gas fields was implemented in surrounding areas of the oilfield. The dipole-dipole configuration was used in field geometry; during the data processing,a new technique separated the induced polarization anomaly from electromagnetic induction effect——reforming spectrum parameter phase stagger fit method was used,which is based on multiplication combination of Cole-Cole model with Brown model. The experimental results showed that CR method could finely describe vertical and horizontal feature of induced polarization anomaly within schedule depth scope in exploration design and provide reliable geophysical basis for well-site design. The predicted induced polarization anomaly was confirmed by following drilling practice.
