回流渗透白云岩化是一类重要的白云岩化模式,其应用广泛,成岩储集性良好,具有重要的研究意义。近年来,国内外对回流渗透模式白云岩的研究不断深入,取得了许多新的进展。作者从回流渗透模式的研究历史出发,详细讨论了其发展和应用现状,总结了该模式下白云岩的Mg来源、水文模式和沉积岩石学特征,并着重讨论了中等盐度下的回流渗透白云岩化等新的研究和应用,指出大规模的回流渗透白云岩化作用可在中等盐度的条件下形成,其强度往往受控于海平面变化。
Reflux seepage dolostones were widely distributed in the geological records and considered to be potential high-quality reservoirs of applicable value.Recent studies on the reflux model of dolomitization highlight its advances and controversies.This paper briefly covers the research history and progress of the brine reflux model and its application.The source of magnesium,the fluid-flow mechanism and the ancient characteristics of rocks in this model are particularly summarized.Some new researches such as penesaline dolomitization by reflux seepage provide a new impetus to revisit the primary model.