Efficient simulation of hydraulic fractured wells in unconventional reservoirs

摘要: Abstract Reservoir simulators remain essential tools for improved reservoir management in order to optimize hydraulic fracturing design unconventional low permeability reservoirs. However, the commonly-used simulator requires too much computational efforts description of local phenomena vicinity fractures, and is practically infeasible field applications, due large number gridblocks involved a full-field simulation with many multi-fractured complex wells. Therefore, coarse grid simulations have been widely used, but techniques fractured wells need be improved. In this paper, we present efficient numerical methods handle both long-term well performance transient behavior reservoirs grid. To simulate correctly behavior, transmissibilities around fracture connection factor between block are computed, based on (pseudo)-steady-state near-fracture solution. This approach provides not only an accurate production calculation, also correct pressure distribution region. reservoirs, effects cannot ignored, very near-well/near-fracture physical processes such as fluid induced formation damage. effect, coupled modeling technique its efficiency demonstrated tight-gas reservoir.