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Degasification of virgin Pittsburgh coalbed through a large borehole

Directionally controlled drilling to horizontally intercept selected strata, upper Freeport coalbed, Green County, Pa.

Published Year

• 1970-1979 (2)

Subject

• Mine gases (2)
• Mine ventilation (2) *
• Boring (1)
• Coal mines and mining (1)
• Coalbed methane drainage--West Virginia (1)

Author

• Fields, H. H. (2) *
• Diamond, W. P. (1)
• Oyler, David C., (1)

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