摘要
海上油田开发由于受平台条件、水处理能力等条件的限制,无法像陆地油田一样采用注水来实现二次开发。依靠弹性驱动开发的薄油层,能量供给不足,采收率较低。通过实施自流注水,将油层跟上部水层连通,利用能量充足的水体来补给油藏能量,有效维持了油藏压力,保持了油井的产量,进而提高了薄油层的采收率。自流注水量无法通过地面计量系统进行计量,因此利用油藏工程方法,通过拟合测压点,可预测自流注水量及压力随时间变化的关系。
Offshore oilfield can not realize redevelopment by injecting water like onshore oilfield as limited by platform condition and water disposal capacity.Thin pay zones depleted by elastic drive usually have low oil recovery for lack of energy supply.By implementing dumpflooding,the reservoir can be connected to the upper aquifer to supplement reservoir energy by utilizing aquifer energy,thus maintaining reservoir pressure and oil well production and improving the recovery factor of thin pay zones.The amount of water injection of dumpflooding can not be measured through surface metering system,therefore reservoir engineering method is applied to forecast dumpflooding water injection rate and pressure-time relationship by matching pressure measuring points.
出处
《特种油气藏》
CAS
CSCD
2010年第6期66-68,共3页
Special Oil & Gas Reservoirs
基金
上海市科委2009年度"创新行动计划"临港新城(海洋科技)科技支撑项目子课题"东海油气田薄油层开发关键技术"(09DZ1201100)
关键词
自流注水
薄油层
注水量
井底压力
平均地层压力
H4B油藏
dumpflooding
thin pay zone
water injection rate
bottom hole pressure
average reservoir pressure
H4B reservoir
