This group of products is
used on the leading edge of a casing tube string to advance it through the
overburden layer and into the bedrock by means of rotational drilling.
Depending on the range of
application, the cutting media on the core bit may take the form of synthetic
diamond on the impregnated type, natural drill diamond on the surface-set type,
or tungsten-carbide particles or elements.
Economical impregnated diamond casing shoe Bit is
available for use with all standard casing tube sizes and a limited number of
Wireline drill sizes. The IDP ‘casing shoe Bit is intended for use in
applications where the casing tubes are to be permanently left in the drill
hole.
IDP casing shoe Bit is supplied with :
§ Flat-Face (Style ‘F’) crown profile.
§ Regular (Style ‘W’) waterway configuration.
§ 0.12-inch (3 mm) diamond impregnation depth.
