This apparatus consists of three parts-heating housing, cauldron, and core holder.Each special core has a small incontinuous hole drilled along the center for drilling fluid seepage or filtration.

• 该装置由加温套、釜体、岩心夹持器3部分组成，岩心中央钻有一未完全连通的小孔作为钻井液的渗滤通道。