王场油田潜三北降压开采的实践再认识

The Practice and More Knowledge to the Blowdown of the “Sanbei” Block of Wangchang Oilfield

王场油田三北已进入高含水、高采出程度的“双高”开发阶段 ,油层非均质性严重 ,三大矛盾日益突出 ,水驱油效率越来越差。根据三北油藏特性 ,选择降压开采为主的开发方式取得了较好的稳油控水效果。

The “Sanbei” block of Wangchang Oilfield has entered into the period of “two high” development phase, which means high water cut and high ration of total oil produced to OOIP. As a result,the oil layer anisotropism is very severe , the three great contradictions are becoming increasingly acute , and the water displacement efficiency turns worse and worse.According to the specific properties of Sanbei reservoir being scheme as the major means,the blowdown experiment has got good results in controlling water cut to st- abilize oil production.