Interaction Between Uncertainty Data and Operational Decisions in the Risk Management in Mature Gas Field

Abstract

SUMMARYThe Laslau Mare field is located in the Transylvania Basin, Romania, is a multi-reservoir, brown gas field, vertically split in 6 production packages with different fluid contacts and pressure levels; shale intercalations divide the reservoir layers from each package in several separated sandstone or shalysandstone bodies; to add complexity the two upper packages have high water production risk and the lower packages have low permeability as tight reservoirs. The field requires combining the latest technology from our side with the operational experience of ROMGAZ to refine the understanding of the reservoir and its productivity. The actual phase includes redevelopment and optimization of the field, with newer technologies and well interventions to insure profitable results. The Uncertainty management and Decision-making have contributed to the successful performance of the project and open another business opportunities. The fact that decisions facing eventualities and weak data were correct has been demonstrated with increased production, almost three times of its value on September 2003.