Air and Gas Drilling Manual 2nd Edition
http://rapidshare.com/files/14387700/Air_and_Gas_Drilling_Manual.rar
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According to the U.S. Department of Energy, by 2005, 30% of all wells will be drilled using gas and air. The Air and Gas Drilling Manual, by William Lyons -- an internationally known expert and holder of nine drilling patents -- lays out everything you need to apply air and gas drilling to all kinds of operations, from the most basic to the most complex, and for the shallowest to the deepest. You’re shown how to:
Master the air and gas drilling techniques in vital industries: construction and development of water wells, monitoring wells, geotechnical boreholes, mining operations boreholes, and more
Calculate volumetric flow and compressor requirements.
Drill with stable foam, unstable foam, and aerated liquids (as well as gas and air)
Handle the special considerations of deep hole drilling
Perform direct and reverse-flow circulation calculations
Specify drills, collars, and casings
Engineer and operate specialized downhole projects
Plan operations and choose air package contractors
