Diamond Reaming Shells & Casing Shoes
Reaming Shells:
Reaming shells are designed to be placed behind the core bit to ensure hole diameter is maintained and to assist core barrel stabilization.This ensures that when a new core bit is inserted into a continuing bore hole there is a good chance of reaching bottom of bore hole without reaming.
Reaming shells are produced with diamond panel pads using specially chosen diamonds of 30/40 s.p.c. Although reaming shells generally last 3 - 4 times longer than core bits they should be retired as soon as they wear under gauge otherwise it could result in an undersize bore hole diameter which can mean reaming later.
Reaming shells are available for all types of core barrels
Reaming shells are designed to be placed behind the core bit to ensure hole diameter is maintained and to assist core barrel stabilization.This ensures that when a new core bit is inserted into a continuing bore hole there is a good chance of reaching bottom of bore hole without reaming.
Reaming shells are produced with diamond panel pads using specially chosen diamonds of 30/40 s.p.c. Although reaming shells generally last 3 - 4 times longer than core bits they should be retired as soon as they wear under gauge otherwise it could result in an undersize bore hole diameter which can mean reaming later.
Reaming shells are available for all types of core barrels
Casing Shoes:
Casing shoes are used for drilling down or positioning casing tubes in a drilled hole. The interior is smooth and sufficiently large enough to allow free passage of drill bits, core bits, reaming shells and core barrels having the same letter-name designation (e.g. HW casing accepts HWF, HWG and T6-H core barrels).
Impregnated casing shoes are recommended for very hard and fractured formations whilst Tungsten Carbide casing shoes are recommended for soft to medium hard formations..
Casing shoes are used for drilling down or positioning casing tubes in a drilled hole. The interior is smooth and sufficiently large enough to allow free passage of drill bits, core bits, reaming shells and core barrels having the same letter-name designation (e.g. HW casing accepts HWF, HWG and T6-H core barrels).
Impregnated casing shoes are recommended for very hard and fractured formations whilst Tungsten Carbide casing shoes are recommended for soft to medium hard formations..