Gas Diffusion into Oil, Reservoir Baffling and Tar Mats Analyzed by Downhole Fluid Analysis, Pressure Transients, Core Extracts and DSTs

摘要

In this reservoir study, two adjacent fault blocks have been subject to the same initial liquid and subsequent gas charges, yet fluid characteristics are different. Wells in each fault block have a gas-oil contact (GOC) and an oil-water contact (OWC), thus all depth-dependent in-reservoir fluid geodynamic processes are visible within each well. The two adjacent fault blocks are found to be at different stages of the same reservoir fluid geodynamic process yielding a 'movie' with two time frames.