Pioneering Subsurface Data Management Studio and Asset Retirement Obligation Retrenchment in Upstream South Sumatra Region, Indonesia

Abstract

According to the geoscientist work profile in Oil & Gas Journal, 1998, inadequate data management practice has caused 60% proportion of the time to be spent for data searching and compilation, it has consequently reduced time for appropriate subsurface analysis. The oil and gas industry in the South Sumatra region is categorized as a matured working area and always becoming a challenge to operate efficiently, not only because of well-developed fields and depleted reservoirs, but also commonly deals with a huge amount of old raw data set, either well coordinates, seismic, trajectory, or log data, even data duplication itself. However, since its first discovery in 1896, the South Sumatra region has already transformed into one of the most productive basins in Indonesia until the present through immense exploration and development activities. Additionally, more than 4000 wells have been drilled in 86 oil fields of the South Sumatra block within an 18,181 km2 working area. Massive operational jobs such as drilling programs, workover, and well intervention involved a lot of subsurface data. Invalid data has proven a serious problem that caused several operational failures and enormous financial losses. Proper implementation of subsurface data management for the last several years has generated significant progress for future company milestones.