Downhole Directional Drilling Tools: Equipment Spotlight

March 2012, Vol. 67 No. 3
The Ballantine Hurricane Collar

Railhead Underground Products
The EXTReam boasts no moving parts - at the end of a backream, simply replace any worn teeth and the EXTReam is ready to go again. The EXTReam has proven itself in field tests in cobble, soft to medium rock, and hard rock. The EXTReam is a true horizontal rock reamer and comes with two types of teeth with the EXTReam: a pointed tooth for softer rock, and a rounded tooth for harder rock. The EXTReam is delivered from the factory with most of the side and rear water ports plugged which forces most of the flow out the front to properly mix the cuttings. A variety of different size nozzles and plugs that can be used to reconfigure the water ports based upon the volume of mud being pumped and the conditions encountered during the pilot bore. The EXTReam works best with low pullback pressure and low rotational torque. Decrease the rotation when encountering extremely hard rock conditions. 888.313.7455, railhead.com

Sharewell
Sharewell’s heavy-duty LTX series of Lo-Torque Hole Opener is ideal for pipeline projects. The field replaceable cutters are available in IADC TCI type 5, 7 or 8 and in mill tooth style. Each body can open four different hole sizes, and the larger cutters have big sealed bearings for longer downhole life. With only the cutters contacting the formation, less torque is required to operate the tool. 800.637.6461, sharewell.com

HammerHead Trenchless Equipment
Whether you’re drilling in rock, overburdened cobble or compacted soil, there’s a TriHawk drill head to meet your needs. TriHawk drill heads are made of the highest quality, heat-treated alloy steel and feature strategically placed carbide to help punch through the toughest conditions while reducing wear and enhancing tool life between rebuilds. The boltless modular design square-drive spline is the toughest tooling connection in the industry. This modular design makes it simple to change out drill heads and can be easily adapted to use standard flat or blade bits. Teeth are positioned for high production and reduced machine vibration. Multiple cutting tooth styles can be configured for different types of rock. The boltless modular design of the square drive spline allows for interchangeable bits. 800.331.6653, hammerheadtrenchless.com