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R&D项目研究了在马来西亚油田采用EOR化学工艺提高采收率的可行性。在使用碱的两种工艺中运用了独特的两级软化海水处理技术。在119℃下进行了热老化研究,以便筛选适合所需稳定性和降解的化学剂。通过稳定化学剂的界面张力和相态试验选择配方,通过线性岩心驱替和热降解试验选择聚合物。在径向岩心驱替试验过程中,按照矿场所需比例注化学剂进行采油研究。无碱表面活性剂稀释液获得的增油量较低,这是因为表面活性剂消耗量大。在岩心驱替试验中,碱表面活性剂驱平均提高采收率为OOIP的14·6%,碱表面活性剂聚合物驱平均提高采收率为OOIP的28·6%,从而证明了在马来西亚有应用EOR化学工艺的潜力。
The R & D project examined the feasibility of using EOR chemistry to increase oil recovery in the Malaysian oil field. A unique two-stage softened seawater treatment is utilized in both processes using alkali. Thermal aging studies were performed at 119 ° C to screen for chemicals that suit the desired stability and degradation. The formulation was chosen by stabilizing the interfacial tension and phase behavior of chemicals and the polymer was selected by linear core flooding and thermal degradation tests. During the radial core flooding test, chemicals were injected at the required ratio of the mine site for oil recovery studies. Alkali-free surfactant diluents result in lower oil yields because of the high surfactant consumption. In the core flooding test, the average recovery of alkali surfactant was 14.6% of that of OOIP and that of alkali surfactant polymer was 28.6% of that of OOIP, which proves that in Malaysia, Potential for applying EOR chemistry.