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由于稠油注蒸汽井油藏层间非均质性严重 ,导致吸汽剖面不均匀 ,降低了开采效果 ,据此 ,以油溶性聚合物、高温成胶剂和弹性填料为主要成份研究了一种高温暂堵剂。室内试验表明 ,该剂能在高温下成团、不易降解、油溶率高、抗温性好 (耐温 30 0～ 35 0℃ )、具有较好的耐水冲刷能力及选择性 ,堵水率达 99% ,堵油率 1 5 %以内。在辽河油田 1 2口井中的现场试验应用结果表明 ,成功率 1 0 0 % ,有效率 90 % ,取得了较好的经济效益。
Due to the serious inter-layer heterogeneity in the heavy oil injection steam well, the cross-section of the suction steam is not uniform and the mining effect is reduced. Based on this, taking oil-soluble polymer, high temperature gelling agent and elastic filler as main components, High temperature temporary plugging agent. Laboratory tests show that the agent can be lumpy at high temperature, not easy to degrade, high oil solubility, good temperature resistance (temperature 30 0 ~ 35 0 ℃), good water scouring ability and selectivity, water plugging rate Up to 99%, oil removal rate of 15% or less. The field test results in 12 wells in Liaohe Oilfield show that the success rate is 100% and the effective rate is 90%, which has achieved good economic benefits.