retardant 能延缓酸液对地层反应速度的化学药剂。其机理是缓速剂被岩石表面吸附，使岩石具有油湿性。
降解引发要素可以是温度或化学反应物，以及任选的加速剂或缓速剂以提供所需的封堵去除时间。
Degradation triggers can be temperature or chemical reactants, with optional accelerators or retarders to provide the desired timing for plug removal.
表面稠化酸是将稠化剂(PAM)、交联剂(GL - 5)加到酸中配制而成，它具有缓速酸化和防砂作用。
Surface viscous acid has been prepared by mixing thickening agent (PAM) and cross? Linking agent (GL-5) with acid, which has the function of retarding reaction rate and sand prevention.
针对孤岛油田部分油层污染为无机物和有机物混合堵塞，开发出一种HA- PA热酸深部解堵剂，它由HA热化学处理剂和PA缓速酸组成。
Some reservoirs in Gudao Oilfield are plugged by the mixture of organic matter and inorganic matter. For solving this problem, a new plug removal agent was developed.
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