Analysis of Offshore Water-Resouce Well Completion Technology Application in Shengli Oilfield

Filtering sea water and formation water have been using as the resources of offshore injectionin Shengli oilfield.Injection strings were corrupted severely while filtering sea water was selected as injection water resource.However,the sea water resource was not satisfied for the need of development of offshore oilfield.A new water resource well array was put into injection in the formation of Guanxia member from which formation water is better compatibility with the formation of Guanshang member and is a suitable resource.Underbalanced perforating with 178 gun and 178 charge used in water-resource offshore wells is to decrease perforator's eccentric effect in the center of casing pipe and reduce channel damage of perforating oddment.Also TSO Fracturing technology was used to stimulate high-perm formation,high duty electric pump introduced from Radar Co.to produce water,and surface frequency conversion used to control oil production.Water-resource wells completion treatments were accomplished successfully and relieved shortage of water resource effectively.To generalize and improve the well completion technology is to increase further the development progress of Shengli offshore oilfield.