The Basics of Boring Rock

Proper equipment and tool selection is critical to successfully bore rock. In general, a mud motor is the industry wide accepted method to effectively and efficiently bore rock. The key to effective mud motor use is obtaining sufficient volume from the mud pump. The mud pump size (pumping capacity in GPM) will determine the size of mud motor that can be used. The larger the mud pump the greater the capability to make larger bores in rock.
Ideally torque and thrust capacities of a boring machine should meet or exceed the needs of a rock bore. The following equipment and tool packages are typically used on intermediate sized drill rigs in the HDD industry.

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• Guidance: On installations where normal walk over location methods are not suitable or where greater accuracy of bore direction is required, INROCK® offers a steering system with “TruTracker” along with engineering services to assist the contractor.

• Training services: Boring rock is a knowledge intensive operation. To assist an operator in learning to bore rock, INROCK® offers an onsite training program. INROCK® can assist an operator in bidding prospective jobs with a suggested time/cost estimate based on operator input such as length of bore, hardness and type of rock (very important) and equipment resources.


INROCK® offers a complete line of services, down hole tools and equipment (sales and rental) that will assist the contractor to successfully bore in rock.