NUMERICAL SOLUTION INJEÇÃO DE POLÍMEROS PETROLEUM INDUSTRY DRILL-IN FLUIDS POLYMER ADSORPTION EXPERIMENTAL PROCEDURES HERSCHEL?BULKLEY MODELING TWO-PHASE FLOW CIRCULATION LOSS REOLOGIA ENHANCED OIL RECOVERY PIV TECHNIQUE UNCERTAINTY ANALYSIS POLYMER DEGRADATION HERSCHEL-BULKLEY FLUID VELOCITY PROFILE DRAG REDUCTION ELECTRICAL SUBMERSIBLE PUMP