The oil layers G II in Lamadian Oil field are Class 3 reservoirs. The reservoirs have the characters of multiplayer, thin, low permeability and strong homogeneity. In order to study the feasibility of the development of polymer flooding on thin and poor reservoirs and form a suit of mature technology, the symmetry element L8-182 was chosen to be the test site in March, 2007. Injection-production ability, producing situation, and the characteristics of water-cut variation are particularly discussed. The result demonstrates that after polymer flooding the trial had dropped off the injection - production, adjusted the geological section, and enhanced producing extent in Class 3 reservoirs. It turned out that the polymer flooding in Class 3 reservoirs can increase oil precipitation. The research result provides instructive evidence for polymer flooding in Class 3 reservoirs of Lamadian Oilfield.%喇嘛甸油田高二组油层属于三类油层、油层发育具有层数多、厚度薄、渗透率低和均质胜较强的特点.为了探索薄差油层聚驱开发的可行性.形成薄差油层高教开发的配套调整技术.2007年3月选择在喇8-182井区开展聚驱试验.详细论述了聚驱阶段注采能力、动用状况和含水变化特点.现场实践表明:三类油层聚驱后注采能力下降,若面调整好、动用程度提高,能够见到较好增油阵水效果.该项试验研究成果为喇嘛甸三类油层大面积聚驱开发提供指导性依据.
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