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长庆油田坪北经理部根据特低渗透裂缝油藏的特性展开了对地下合成凝胶调剖剂的研究及现场试验。试验方法:将丙烯酰胺单体用清水溶解,按(10%~12%)AM+0.1%YFJ+0.02%JLJ+0.02%稳定剂的配方要求加各种添加剂,搅拌均匀;将配好的堵剂装入带塞比色管中密封,分别在20℃和50℃的温度下保持恒温,观察在常温和地层温度条件下发生聚合反应的时间。实践表明,地下合成凝胶调剖剂粘度低,可泵性好,有利于选择性地进入吸水能力强的水窜裂缝,适合于地层温度低于60℃的地层,但必须在低排量、低压力下施工。
According to the characteristics of ultra-low permeability fractured reservoirs, the manager of Pingbei Department of Changqing Oilfield commenced the research and field experiments on the gelcasting agent for underground synthetic gels. Test Method: The acrylamide monomer dissolved in water, press (10% ~ 12%) AM + 0.1% YFJ + 0.02% JLJ + 0.02% stabilizer formulation requirements plus a variety of additives, stir; The mixture was sealed in a plugged colorimetric tube and kept at a constant temperature of 20 ° C and 50 ° C respectively. The polymerization reaction was observed at normal temperature and formation temperature. Practice shows that underground synthetic gel profile control agent has low viscosity, good pumpability, is conducive to selective access to strong water channeling fractures, suitable for strata temperature below 60 ℃, but must be low in displacement, Low pressure construction.