Abstract: A pilot program of production stabilization and water-cut control with comprehensive well pattern modification and optimization of fluid production as its core was drawn based on analysis of residual oil distribution pattern and its influential factors at ultra-high water-cut stage inⅣ1-3strata series in Shuanghe oilfield.This pilot remarkably im-proved development efficiency of the unit yielding a recov-ery factor of 2.85%higher than that before and incremental recoverable reserves of 36.6×10 4 t.The pilot results and experiences achieved can be used for reference in produc-tion stabilization and water-cut control at ultra-high water-cut stage in old oilfields.