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Keywords: overburden pressure
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Proceedings Papers
Mechanism Of Drilling Wells With Air As The Drilling Fluid
Available to PurchasePublisher: Society of Petroleum Engineers (SPE)
Paper presented at the Conference on Drilling and Rock Mechanics, January 17–19, 1965
Paper Number: SPE-1052-MS
... afforded by the high-velocity air stream. The greatest reason for high drilling rates with air is that the air is greatly cooled by expansion as it passes through the bit and thereby cools the bottom of the hole to reduce the stresses exerted on the rock by the overburden. Overburden pressure, liquid...
