港西四区聚合物驱防窜试验研究

针对港西四区聚合物驱先导性试验中暴露出的聚合物段塞沿高渗透层窜流严重，并在个别井过早突破的问题，应用室内物理模拟试验，计算机数值模拟等技术，对非均值性严重的油藏进行了聚合物驱防窜技术的可一研究，并在室内模拟试验获得基础上，在港西四区设计了２中组进行了先导性试验，试验结果表明，聚合物防窜技术可有效地控制聚合物段塞沿高渗透层的窜流，使聚合物拉出时间推迟１年多，并进一步扩大聚合物驱的波及效率。

THE STUDY OF POLYMER FLOOD WITH FINGERING-RESISTED TREATING FOR NO. 4 AREA, GANGXI OIL FIELD.PED

According to the problems that fingering of polymer slug in a higher permeability zone and early breakthrough in some producers during the pilot test in the No. 4 area, Gangxi oil field,a study for polymer slug fingering-resisting has been carried out. The feasibility study and evaluation by lab. test were done first. A pilot test plan of 2 well groups in No. 4 area for polymer slug fingering-resisting treating was desingned. Both the results from lab. study and field pilot test show that the technics of polymer fingering-resisting is useful for the polymer flood to the reservoir with serious heterogenity, the swept efficency of polymer slug can be improved. The detail information about a research of polymer slug fingering-resisting is also given in this paper.