Well N1-2 P25 is the first polymer flooding horizontal producer which produces the remaining oil in the top part of thick oil zone both in Daqing Oil Field and in China.

• 南1-2-平25井在大庆油田是第一口挖潜厚油层顶部剩余油的聚驱水平生产井,在全国也属首例。该井轨迹设计中为提高避水厚度水平段在油层顶面穿行,水平井目的层油层顶面深度预测精度要求高。