Methodological Approaches for Studying Geology of Oil Reservoirs Complicated by Erosion Downcuts

The reason for the discrepancy between proved oil reserves and its real production rate was an inaccurate geological model of the reservoir. Reinterpreted well-logs, built new geological maps with regards to the erosion boundary, and a new 3D geological model resulted as a newly estimated reasonable oil reserves. To sum up, oil net pay within the reservoir A is extended approximately by 25 %. The oil productive area has grown up and total amount of oil reserves increased by 125 %.