INTEGRATED MODEL FOR SAND CONTROL WELL PRODUCTIVITY EVALUATION AND PREDICTION

Normalized Productivity Index(NPI) and Productivity Ratio(PR) are firstly put forward to evaluate the effect of sand control measure on well productivity.According to the additional flow resistance areas formed by sand control measures and corresponding skin factors, considering the non-Darcy flow, the calculation method of NPI and PR is educed.If Inflow Performance Relationship(IPR) before sand controlling is at present, the IPR curve after sand controlling could be obtained by NPI.The application results indicate that this simplified model needs only fewer data but its results are very reliable.As an integrated sand control well productivity evaluation and prediction model, it can be used for most of present sand control method.