A Holistic Approach for Production Optimization Strategy In Bekapai Offshore Field

Abstract

This paper describes optimization efforts that have been done, currently in execution and will be done in Bekapai. These efforts are from subsurface point of view and also surface facilities. Bekapai is a mature oil and gas field located in the offshore Mahakam Delta, Indonesia. Since future development resources become more limited, optimizing existing wells or baseline potential is one of the key to prolong the life of Bekapai. Some key works have been done such as, revisit fluid interpretation of
old wells, update hydrocarbon contact based on new wells data and PLT or RST result and detail dynamic synthesis on reservoir level to reconcile hydrocarbon in place and production cumulative. Other than new wells, several optimization efforts are performed to Maintain baseline contribution.

Some of these optimization efforts are considered as conventional but yet still deliver good result, such as gravel pack zone reopening; Lowering network pressure by adjusting wells configuration and review again fluid status of our reservoirs to increase the perforation portfolio. Other efforts are considered as breakthrough in Bekapai field, such as well to well gas lift injection; inter platform gas lift injection and sand consolidation (SCON) treatment.

SCON is recently performed to produce unconsolidated reservoirs in Bekapai with very good result, reserves realization is higher than prognosis. All these efforts are success to Maintain baseline contribution in Bekapai at 50-65% of total field production. Beyond current practice, gas lift Deepening is one of the methods to be implemented soon, to optimize oil production and Lowering the abandonment pressure of depleted zone.

The success of these optimization efforts illustrates the value of continuous improvement and holistic approach between related entities in optimizing production from a mature oil and gas field.