Equipment Spotlight: Downhole Directional Drilling Tools

March 2011, Vol. 66 No. 3

Downhole directional tools from Railhead, Sharewell, INROCK, Melfred Borzall, American Augers, Horizontal Technology, HammerHead, Vermeer, Ballantine and Ditch Witch.

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. Although the EXTReam will work in other conditions, it performs best in tough, rocky conditions. The design of 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, www.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, www.sharewell.com

INROCK
INROCK Standard Rock Reamers are fabricated using only "new bit" Sealed Bearing Drill Bits Sections. INROCK Rock Reamers are assembled under rigid quality control fabrication standards. Proper tool design, welding techniques, heat treating and hard-facing, are critical during the fabrication process to ensure tool strength, cutter integrity and bearing life. Understanding down hole torsional stress and vibration effects on welded components is vital in providing reliable standard rock reamers. Available in a wide variety of cutting structures, sizes, and hardness ratings covering the entire range of HDD rock drilling applications. 713.690.5600, www.inrock.com