Boart Longyear

From percussive casing to API casing, Boart Longyear offers a variety of casings designed for specific drilling applications.  A variety of diameters and thread types are also offered on each of our casings for maximum compatibility.

Rotary Percussive Casing Friction Welded

Rotary percussive casing is designed for use in drive drilling and duplex drilling systems. This casing is specifically engineered to withstand the percussive forces from hydraulic drifters.

As a standard offering, friction welded rotary percussive casing is available in standard sizes up to 152.4 mm with left hand threads and spanner flats. Additional sizes as well as right hand threads are available upon request.

Friction welded casing has quenched and tempered pin and box ends constructed of high tensile strength steel. The threaded ends are friction welded onto a mid-body manufactured from annealed midgrade steel.

Rotary Percussive Casing Nipple Connection

Rotary percussive nipple connection casing is designed for use in drive drilling and duplex drilling systems. This casing is specifically engineered to withstand the percussive forces from hydraulic drifters.

Rotary percussive casing nipples are constructed from quenched and tempered high tensile strength steel. The casing lengths are manufactured from annealed mid-grade steel. Additional sizes as well as right hand threads are available upon request.

Rotary Casing

All Boart Longyear rotary casing is intended for re-usable casing applications where casing is removed after grouting. Rotary casing is designed for rotational drilling without percussion.

All sizes are available with both right hand and left hand thread configurations. Rotary casings have a continuous flush ID throughout the entire length of the casing.

Rotary casing is also available with the TwinDrive^TM thread. Boart Longyear can provide rotary casing up to 406 mm diameter, available upon request.