2008 large directional drilling rig census.
Pipeline & Gas Journal › Vol. 235 Nbr. 10, October 2008
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2008 large directional drilling rig census.
Pipeline & Gas Journal's 2008 census of large horizontal directional drilling contractors provides an in-depth look at the capabilities of this dynamic market.
When horizontal directional drilling (HDD) professionals discuss the size of an HDD rig, they usually refer to the maximum pullback force the unit can develop. The most common industry standard for a large directional drilling unit is defined as having a minimum of 100,000 pounds of pullback force. In addition to pullback, the most common specifications used to categorize HDD equipment are rotary torque of drill stem rotation speed and the size of drill pipe. Selecting the right size drill rig to fit specific project needs is one of the most critical elements in managing successful HDD operations. The drilled crossings of rivers, highways, canals and other surface and subsurface obstacles are a proven technology with a strong track record. Using this technology, contractors around the world can successfully install pipelines, cable and conduit in areas where conventional methods are unacceptable or uneconomical. Years of experience and the best in modem technology enable the contractors listed to effectively perform projects th...See the full content of this document
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