Win-Win Synergy Between Two Assets, A Novel Approach to Unlock Production Constraint and Enhance Sustainable Oil Rate

Abstract An Onshore oil field X production mandated target rate is 180 MBD from carbonate reservoirs. The field has been developed to produce oil & gas maintaining pressure with cyclic Water alternating gas (WAG) injecting methodology. Over the years field Gas oil ratio (GOR) has increased and consequently total associated gas production has increased, causing production constraints due to Surface facilities gas handling capacity limitation. This has resulted in oil production curtailment, which impacts the oil asset's ability to achieve its production target. The two assets, namely oil asset and gas asset collaborated and cooperated for a synergy to deal with challenges of well testing of gas producers and reducing gas injection, production enhancement to meet sustainable oil production target in oil field X and worked out mutually beneficial solution. A win-win scenario was identified, in which two inactive gas producers have been agreed for temporary injection of excess associated gas in Zone-1 gas cap. As Win-win synergy between two assets, two gas wells, well-A and Well -B, have been temporary converted to gas injectors, re-directing surplus associated gas into these wells instead injecting in Oil reservoirs for pressure maintenance, to enable reduction of gas injection volume in oil asset reservoirs, enable sustainable oil production enhancement and enable increase in water injection to support the reservoir pressure and maintain VRR. Moreover, this reduction in gas injection volume will support lowering the GOR over time in the oil asset, in addition to yielding an improvement in condensate production at the gas asset side during resumption of gas production post conclusion of injection phase.