OLGA OLGA is the market-leading simulator for engineering the flow of oil, water and gas in wells, pipelines and receiving facilities. Pipeline flow assurance and well dynamics with OLGA ensure technical, operational and HSE integrity during design and operation of production systems throughout the entire life cycle. This results in capital and operating cost effectiveness. Successful design and operation of multiphase production systems rely on detailed understanding of flow behavior. OLGA provides solutions through accurate modeling of true dynamics. OLGA has an extensive package of standard and specialized modules developed through extensive research and field measurements, which are capable of simulating demanding challenges in multiphase transport. OLGA can also be used in eField Production and as run-time in integrated simulators.