Production Optimization and Forecasting of Narsingdi Gas Field, Bangladesh.
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AbstractThe main objective of this field is to investigate various optimum field production strategies of the whole production system (from reservoir to separator) of Narsingdi Gas Field, Bangladesh using The Integrated Production Modeling, IPM suite (GAP, PROSPER, MBAL) software package by applying the trademarked methodology of Nodal Analysis. Recommending the best optimum production strategy on the context of recent gas crisis in the Bangladesh is the ultimate goal of this investigation.Individual modeling (Pressure and Temperature) of the wells in PROSPER by Nodal Analysis is a prime requirement of this work. Another important pre-requisites are to estimate the reserve of the field by Material Balance Method in MBAL, quality check with the recent volumetric reserve estimate, proper aquifer modeling and determine missing reservoir/aquifer parameters of the field. Based on this reserve estimation, various production forecasting and reservoir performance for existing and optimum conditions had been investigated after the whole production system of reservoir, wells, pipelines, chokes and separators in the GAP model.The reserve of the lower gas sand of this field is estimated to be 273.838 BCF which fairly agrees with the recent volumetric estimate of 284 BCF. During the prediction run for various existing and optimum production strategies, it had been found that acceleration of production for existing conditions does not improve the gas recovery in a great deal, but when the wellhead backpressure is reduced by installing surface compressors and knockout drum, it definitely improves the gas recovery factor by 23%. Finally, an optimum production strategy is recommended along with future installation of surface compressor and upgrading of gas processing capacity.