Integrated Decision Analysis Process for Selecting Oil Production Optimization and Completion Strategy Alternatives; Study Case of Primary Field (X Field) in PT. ABC using FVT and SMART Analysis

Abstract

Improving reserve recovery in a complex multilayer reservoir of the mature oil field is one challenging task. Some common problems encountered are low rate from tight reservoirs and high water cut from high-quality reservoirs impacts low oil production. Drain more remaining oil from complex reservoir character requires rigorous evaluation and optimization. However, there is no robust decision-making process to choose the best optimization and completion design. Therefore, the solution proposed in the research is the construction of systematic optimization and completion strategy through SMART. However, SMART is unable to be implemented directly since there are problems where the available alternatives are limited and not holistic. Value-Focused Thinking then is required to describe and illustrate concepts for creating better alternatives. VFT compliments SMART and it resulted in a more comprehensive set of alternatives. The outcome of the combination VFT and SMART analysis resulted in a recommendation to implement Full Perforation and commingle several tight reservoirs on the upcoming Tiger Field Workover Campaign. It successfully improved the production recovery of Tiger Field and maximize revenue to the company.

Keywords: Decision-making, SMART, Value-Focused Thinking, oil production, complex reservoir.