大庆油田萨中西部三元复合驱矿场试验研究

大庆油田首次三元复合驱矿场试验研究表明，三元复合驱使区块综合含水由８８．４％下降至６３．７％，区块日产油量由见效前的３７ｔ上升到最高值８８ｔ，全区累积增油１９６２５ｔ，中心井比水驱提高采收率２１．０％；大幅度节省了注水量，提高了开采速度；扩大了波及体积，改善了动用状况，提高了驱油效率。分析发现，三元复合驱注入压力上升幅度、视吸水指数下降幅度及比产液指数下降幅度都小于聚合物驱；三元复合体系与油层及流体有较好的配伍性，不会造成对油层的伤害。矿场试验展示了大庆油田开展三元复合驱的良好前景

. Field test of ASP flooding in the west of block Sazhong, Daqing oilfield.

It is shown by the first ASP flooding field test in Daqing oilfield that the total water cut in the test block can be reduced from 88.4% to 63.7%, oil production increased from 37t/d to 88t/d, total oilincrement is 19625t; The oil recovery in the center well is enhanced by 21.0%; A great deal of injection water is saved, the oil production rate is increased, the sweep volume is enlarged, the producing performance is improved, and the oildisplacement efficiency is enhanced. The pressure raising scope , the apparent injectivity index declining scope and the liquidproduction intensity declining scope for ASP flooding are less than those of polymer flooding. The ASP system matches well with the formation water and the formation can not be damaged. The field test reveal a good prospect for Daqing oilfield to develop ASP flooding.