Reservoir Characterization for Gas Storage under Deltapressure Conditions – A Case History

P147 RESERVOIR CHARACTERIZATION FOR GAS STORAGE UNDER DELTAPRESSURE CONDITIONS: A CASE HISTORY. EXTENDED ABSTRACT Introduction 1 One of the most cost-effective ways to increase deliverability and working capacity in gas storage reservoirs is to operate at higher operating pressures a special case being represented by exceeding the discovery pressure (deltapressuring). The option of deltapressuring was considered for the first time in Italy by Stogit S.p.A. (E.N.I. Group) under the approval of the Department of Industry as a pilot test for a partially depleted gas reservoir which had been operated for gas storage at levels slightly below its original pressure for