乐安油田草古1潜山油藏底水治理及研究

乐安草古1潜山油藏是一个底水超稠油油藏，由于油水粘度比非常大，导致底水快速钻进，造成油井水淹，从而影响了注蒸气开发效果。针对这一问题，采取了对部分高含水潜力井实施水泥封堵底水及氮气压水锥的工艺措施，现场试验表明，该措施能降低油井产水量，提高生产效率，对同类潜山灰岩油藏的开发具有重要的指导意义。

Treatment of Bottom Water in Caogu-1 Buried Hill Reservoir in Le''''an Oilfield

The buried hill reservoir named Caogu-1 is a heavy oil one driven by bottom water. Because of very large water-oil viscosity ratio, the bottom water invades rapidly and results in watered-out, which affects the vapor drive efficiency. Therefore, a special technique which involves applying cement to seal off bottom water and nitrogen to check water coning is employed in some potential wells with high water bearing. Field applications show that such measure can reduce water production, improve operational efficiency, and bring forth significant guidelines to oil production in similar reservoirs.