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Title: Degasification of coal

Patent ·
OSTI ID:5721916

A coal seam is degasified in advance of its being mined by drilling one or more generally horizontal holes from a working face into the seam, and placing a particulate propping agent into the borehole to maintain its integrity.

Assignee:
Conoco Inc.
Patent Number(s):
US 4544208
OSTI ID:
5721916
Resource Relation:
Patent File Date: Filed date 23 Jul 1984; Other Information: PAT-APPL-633728
Country of Publication:
United States
Language:
English