INFLOW PERFORMANCE RELATIONSHIP CURVES IN TWO-PHASE AND THREE-PHASE FLOW CONDITIONS.

摘要

This research investigates Inflow Performance Relationship curves for two and three-phase flow conditions, using a one-dimensional, three-phase cylindrical reservoir simulator.; For two-phase flow conditions, Vogel('31)-type plots are used for plotting the data from the simulator. Using regression analysis, a new equation has been developed to calculate the IPR curve with or without skin. The new equations show good agreement with Fetkovich's('6) equations for non-turbulent conditions when the skin factor is zero. Compared to the combination of Vogel and Standing('34) method, better results are obtained when the skin is not equal to zero.; Using the simulator a new method for predicting future IPR curves has also been developed. This method is based on the actual relationship betwen k(,ro)/u(,o)B(,o) vs pressure predicted by the simulator. Compared to Fetkovich's('6) equations, this new method gives good agreement at early decrements of reservoir pressures, but the deviation becomes larger, when larger decrements in reservoir pressures are taken.; IPR curves for two-phase flow conditions from a well producing from low permeability formations are also presented. The purpose of this investigation is to predict the IPR curves at pseudo-steady state conditions using flowing test data obtained during the transient period. The new equations have also been applied to data from the simulator with good agreement.; The three-phase IPR curves are also determined by using the simulator and seven different hypothetical three-phase reservoir cases have been studied. Three-hundred and eighty five data points were collected using 5 different values of water cut. Regression analysis techniques have been applied to the data points and the new equations for predicting the three-phase IPR curves were developed. Comparison of the new equations to results from the simulator show excellent agreement.