大幅度提高石油采收率的基础研究——1999年立项，2004年科技部验收，不仅在基础理论研究上取得了重大进展，在油田生产实践中也取得良好效果

Easic Study for Significant EOR Increase——This project was launched in 1999 and examined and accepted by Science and Technology Ministry in 2004. The project not only makes great progress in basic theoretical study but also achieves desirable results in actual production at oil fields.

从我国油田开发形势来看，注水开发老油田含水越来越高，稳产难度越来越大，已开发老油田将面临产量总递减的严峻形势。因此，我国迫切需要发展新的开采技术，大幅度提高老油田的采收率，以满足国民经济发展和国家石油安全的需要。而经学驱提高采收率技术已被证明是现有技术条件下大幅度提高采收率的最具潜力的技术之一。

China＇s oilfield development situation shows that the water cut is higher and higher at the oil fields under water-injected development. The old oil fields are facing the stern situation of declining production. Therefore, China is urgently in need of new production technology to significantly raise the recovery rate of old oil fields in order to meet the demand of the nation＇s economic development and secure the oil supplies. The chemical-displaced EOR technology has been proven as one of the most potential technologies to significantly boost EOR under the existing conditions.