The material used to permanently seal annular Spaces between casing and borehole walls.
用于永久封隔套管和井壁之间的环型空间的材料。
2
A continuous 360-degree annular space around casing allows cement to completely seal the casing to the borehole wall.
围绕套管的四周360度的环型空间允许水泥完全能够密封套管与井壁。
3
Oilfield is mined under the condition of function of edge-bottom water, when there is often crowded cement content, and through sealing borehole realize to seal high aquifer.