Publications

PHE ONWJ intends to increase production from Zulu area by conducting Redevelopment Project. The project consists of mainly additional infill wells in existing offshore platforms. The produced fluids will be commingled with current production and transported to main station (ZUJ1) through existing multiphase subsea pipelines. The objective of this research is to identify the best method of flow simulation for the pipelines, which are currently operated below turndown rate so that they can accommodate the future production increment up to 14000 BOPD of waxy, sandy, and heavy crude oil from current production 3,000 BOPD. The methodology is by having comparison of PIPESIM and OLGA Flow Simulation Software against the actual field data recording. Simulation result and analysis have concluded that PIPESIM is able to shorten the simulation time but giving distinct results. PIPESIM identifies unstable flow regime but indicated that internal diameter of pipeline is significantly decreased while pipeline is reported clean from latest pigging. The more rigorous modelling in OLGA software is able to fully capture pipeline behavior hence able to benchmark actual condition. Thus OLGA Software is best used for validation of existing pipelines in turndown rate which then with validated pipeline condition from OLGA, PIPESIM is able to be used for adequacy check of future production rate since it is located far above the turndown rate.