Network model for an integrated production system applied to the Zeit Bay field, Egypt

Abstract

A network model for the Zeit Bay field in Egypt was constructed to simulate the combined performance of the reservoir, production wells, chokes, flowlines and transmitting pipelines. The integrated production network was constructed by calculating overall pressure losses with the producing layer and wells connected to the manifolds, pipelines and separator. The overall solution of pressure losses was determined by iteration of pressures and flow rates at all nodes using only the known reservoir and separator pressures. Thus, the integrated production network was treated as a single iterative model by using correlations that best simulate the performance of each component within the production system. Quantitative comparison between the network model and the actual performance was obtained. Two different methods of error analyses were used to evaluate rate differences between the network model and actual network production rates. The validity of the method is indicated by underprediction of field performance by an average of only 125 STB/D; an absolute error of about 10%.