摘要
胜利油田于１９９２年９月在孤岛油田中一区进行了聚合物驱先导试验。在先导试验取得明显效果的基础上，１９９４年底开展了孤岛油田中一区馆３聚合物驱工业性试验。利用现有的常规井网，采用清水配制母液，污水稀释，二级段塞方式注入，历时３３个月。共注入聚合物干粉８６８７．８ｔ，聚合物溶液５００．５×１０４ｍ３。截止到１９９７年底，含水率平均下降了５．３％，累积增油３４×１０４ｔ。其中中１－１６站效果最好，含水率平均下降了７．２％，累积增油２４．２×１０４ｔ。转后续水驱后，仍保持含水下降势头。该项目已收回全部投资，取得了工业性试验的成功。
Polymer flooding pilot test was carried out at Zhongyi area of Gudao oilfield on September 1992. Based on the obvious effect, a polymer flooding commercial test was held at Ng3 layer. The present conventional well pattern was used. The original solution was compound with fresh water and diluted with produced water. The solution was injected in 2 stage slug and lasted 33 monthes. 8687.8t polymer powder and 500.5×10 4 m 3 polymer solution were injected.Up to the end of 1997, the average water cut had declined by 5.3% and the accumulative incremental oil had reached 34×10 4 t. The best is Zhong 1 16 station, its average water cut declined by 7.2% and accumulative incremental oil is 24 2×10 4t. Its water cut maintains declining after converting to water flooding. This project has taken back all the investment,so the commercial test is successful.
关键词
工业试验
提高采收率
聚合物驱油
油田
polymer flooding, commercial test, EOR, influential factor
