Specifications
1.High penetration rate2.Differ from the Impregnated Diamond Type
3.Use in drilling relatively abrasive, unconsolid formation
Casing & Casing Shoe Bits are used for standard drilling down or positioning casing tubes into drill holes.
The inside diameter of the casing shoe bit is not set with diamonds sometimes(surface set Type) and flush with the inside diameter of the casing. Basically,the corresponding size of Drill Bits and Core Barrels have to get through the inner diameter of the casing shoe bits freely.
The inside diameter of the Casing Bits are set with diamonds and is smaller than the Casing Shoe Bits. It will not permit the passage of the core barrel.
We also make the Rods Shoe Bits to use with the Wireline Drill Rods.
Depending on the cutting media, ZM makes four types of Casing & Casing shoe & Rod Shoe Bits:
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