Water Flooding Disciplinarian Study for Heavy Oil Reservoir with Edge Water and Bottom Water

Bohai A oilfield is a large offshore fluvial depositional reservoirs composed of meandering channels and multiple sands with complex oil/water systems.All wells were commingle produced during initial oilfield development,showing steep increase in water cut,low oil recovery,and fast production declining from sands supported by edge water or bottom water.In order to improve oil recovery,it is necessary to study the water flooding disciplinarian for single important sand.The traditional method was calculating the injection water spread to oil well,however,the natural aquifer was not considered.The aquifer spread has been analyzed to oil wells by equivalent permeability resistance method,which was appropriate for heavy oil reservoir with edge water and bottom water.This method is reasonable proved by reservoir dynamic,and also provides a new way for study in some other similar reservoirs.