大庆油田三元复合驱矿场试验综述

PILOT TEST OF ASP FLOODING IN DAQING OILFIELD

经过多年的室内研究及矿场试验攻关 ,大庆油田已先后成功地进行了 5个三元复合驱矿场试验。试验结果表明 ,三元复合驱可比水驱提高采收率 2 0 %以上 ,乳化对提高三元复合驱的驱油效果有利 ;三元复合驱在注采液能力下降的同时 ,由于含水也大幅度下降 ,仍可保持较高的采油速度 ;采取压裂等增产措施可使下降的采液能力大幅回升 ,螺杆泵。

After dozens of years of laboratory study and pilot test, 5 ASP flooding pilot tests have been successfully performed in Daqing Oil Field. The experimental result shows the ASP flooding can increase recovery 20% more than water flooding. Emulsification is beneficial for improving the displacement efficiency of ASP flooding. At the meantime of the decrease of injection production fluid capability of ASP flooding, with the rapid decrease of water cut, a high production rate is still maintained. Using some stimulation measures like fracturing can increase rapidly the produced fluid capacity that previously decreases. Using screw pump and scale clearing and prevention measures can reduce the effect of scaling on surface lift technique and gathering and transportation equipment.