2012 Large Directional Drilling Rig Census

摘要

Pipeline & Gas Journal's 2012 census of large horizontal directional drilling contractors is an effective tool when selecting the right size of drill rig to fit specific project needs in managing a successful HDD operation. 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.