Abstract: Complex faulted block reservoir got important position in domestic oilfield development, contrast with integrity reservoir, the developing level and effect has a long backward. For complex faulted block reservoir with tectonic lithologic layer in Jidong oilfield, injection-production pattern was not able to control whole reserve effectively, a lot of reserve was lost control by water drive. Irregular point water injection gave priority to the injection-production pattern of complex faulted block reservoir in Jidong oilfield, the common recovery calculating method was not suitable. The irregular point water injection was classified by 4 categories, 13 species oil-sand and pattern styles, limit area sweep efficiency for each style was calculated. After that the fault injection recovery and theory recovery was calculated, contrast with calibration recovery, the calculating result got few number difference which proved reliability of the calculating method.