1. Large Air Systems – Sales Training
Drilling

2. Drilling
Basics Use gens and lights too Range from very small to very large corporations Compressor on rig vs. towable Main purpose of air is to get cuttings out of hole Must be sized appropriately for hole being drilled Big hole = more air Small hole = less air Four Types of Drilling Drill and Blast Exploratory Water Well Foundation

3. Drill and Blast
Drilling to produce a series of holes for placement of blasting charges A pneumatic drill is comprised of a series of air tubes connected to a pile driver that is attached to a drill bit at the bottom. Compressed air enters into the drill and the air tube circuit and pushes the pile driver down upon the drill bit. This causes the drill bit to pound into the surface of the road, pavement, or sidewalk. A valve inside the air tubing inverts, and the air to flow in the opposite direction. New air flow results in the drill rebounding away from the earth. The valve flips and the air flow, combined with the force of gravity, pulls the drill bit back down towards the earth again. The drill bit is able to smash the surface at a average of 25 times per second or about 1,500 times a minute.

4. Drill and Blast
Shrinking market Most compressors are installed on rigs Mine and quarry applications Sometimes compressor is towed behind smaller drills

5. Exploratory Common FrameCat application
An exploratory drilling rig will typically drill four temporary exploratory wells over a suspected deposit, each taking 60 to 90 days to complete
Once the worth of a deposit has been established, a production well will be drilled. An average well lasts 10 to 20 years before it's no longer profitable.
Common FrameCat application
High Pressure (XHP) application

6. Exploratory

7. Water Well Drilling
Rotary Drilling (no air needed)- In rotary drilling, a drill bit is attached to a string of drill pipe. As the drill string is rotated, the bit acts as a grinding machine. Cuttings are flushed upward and out of the hole by circulating a special drilling fluid (called drilling mud) down through the drill pipe and back to the surface. This drilling fluid also serves to cool and lubricate the drill bit and by stabilizing the wall of the hole, it can prevent possible cave-in before the casing is fitted into the hole. Hammer Drill (air needed)- In areas of hard rocks many drillers prefer to use a rig that operates by compressed air to operate a down-hole air hammer to break up the hard rocks. The compressed air also blows the crushed rock fragments to the surface and any water that flows in the well during drilling. High pressure (XHP) compressors are mounted on the rig VHP400 very popular in this application Depth is usually 200 to 400 feet - Diameter is usually 6” Contractors usually know exactly what compressor they need Don’t forget generators!

8. Foundation Drilling
Bigger diameter holes = bigger rigs No air on rigs Typically shallow Higher pressure allows: Removal of larger chips from hole Faster drilling 12” and larger diameter holes (up to 72”) Less than 30’ max Pile driving: typically not high pressure (100 – 125 psi) Less common due to higher use of concrete ~ 1000 cfm

9. Who to Target Drill and Blast Exploratory Water Well Foundation
Excavation contractors in rocky regions
Tunneling contractors
Exploratory
Drilling Contractors
Patterson (#1 in US)
Union Drilling
Chesepeke
Weatherford
Rental
Water Well
Well contractors
Foundation
Foundation contractors

10. More Information
International Association of Drilling Contractors -
Listing of members
National Drilling Association -
Drilling Contractor Magazine
American Ground Water Trust –