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弱凝胶调驱技术指采用接近聚合物驱的溶液浓度 ,加入少量延缓交联型交联剂 ,使之在地层内产生缓慢、轻度交联 ,在某种程度上可看作是将聚合物驱和调剖有机结合的总体技术。研究了弱凝胶在常规岩心中的行为特性 ,包括已形成的弱凝胶在岩心中的运移行为、弱凝胶在岩心中形成后水驱的行为、弱凝胶选择性调驱作用及双管驱替的整体效果。试验结果表明 :弱凝胶在岩心中可发生运移 ;弱凝胶调驱剂具有较好的渗透率选择性 ,即优先进入高渗透的大孔道 ,进入低渗透部位则很少 ;弱凝胶调驱措施有较好的提高采收率效果。
Weak gel flood control technology refers to the use of near polymer flooding solution concentration, adding a small amount of delayed crosslinking cross-linking agent to make it in the formation of slow, light cross-linked, in part, can be seen as the polymerization The combination of physical drive and profile control is an overall technique. The behavioral characteristics of weak gels in conventional cores are investigated, including the migration behavior of the formed weak gels in the core, the behavior of weak gels after formation in the core, the selective gearing of weak gels and The overall effect of dual displacement. The results show that the weak gel can migrate in the core. The weak gel control agent has better selectivity of permeability, that is, it preferentially enters the high-permeability macropore and rarely enters the low-permeability site. The weak gel Adjustable drive measures have better recovery effect.