尤其适应于封堵高渗透、大孔道地层， 且现场施工简便、施工用量少、成本低， 取得了很好的应用效果。
It is especially suitable for plugging high permeable, macro pore path formations and convenient for field operation with a small amount of volume and a low cost, obtaining a good effect.
为封堵地层或保护某些层段在井内套管外面所用的装置。
A device used on the outside of the casing of a well to seal off formations or to protect certain zones.
在水力压裂作业期间，暂时封堵高渗透地层并使压裂液进入低渗透地层所用的物质。
Material that is used to plug temporarily the highly permeable zones and direct the frac fluid to the less permeable zone during hydraulic fracturing.
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