Production Optimization Esp-To-Gas Lift In High Gor Case Using Well Simulator

Ariyon, Muhammad and S, Nugroho R. (2017) Production Optimization Esp-To-Gas Lift In High Gor Case Using Well Simulator. In: International Conference on Science Engineering and Technology (ICoSET) and International Conference on Social Economic Education and Humaniora (ICoSEEH), 08 November 2017.

Text 7. Production Optimization Esp-To-Gas Lift In High Gor Case Using Well Simulator.pdf - Published Version Download (4MB)

Abstract

Pressure depletion happens when the well is produced after a long time. This depletion will caused the increase of associated gas production. RSN field is well known field with high GOR. Electric Submersible Pump (ESP) is a kind of artificial lift which used in RSN field. Well performance in RSN field is decreased time to time because of increase of gas production. Gas production caused zero maag which disrupting performance of ESP. This gassy problem in RSN field can be solved by converting ESP to gas lift. Gas lift is an artificial lift which is suitable for high GOR field. Before converting to gas lift, field performance evaluation needs to be done for each wells (GOR, casing pressure, productivity index). After evaluation, optimization will be done by converting to gas lift. Gas lift design is generated by making sensitivity analysis with injection gas rate and well head pressure as variable. The last is economic analysis from the gas lift conversion. Based on the gas lift optimization in RSN#36, the previous oil rate is 4 bpd using ESP which is below the economic limit. The optimized oil rate is 13.1 bpd with 0.2 mmscfd gas injection rate and 100 psi of well head pressure with the gas injection cost is 200$/d. Pressure compression to reach 100 psi is 100$/d. The result is cumulative oil production for 4 years is 17.27 mstb and net revenue is 125.84$M.

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