Process of underground coal gasification

Patent · Tue Nov 02 00:00:00 EST 1982

OSTI ID:6650945

Savins, J G

Useful product is recovered from an underground coal seam by: drilling a passage extending from the surface to a cavity formed in the floor rock below the coal seam; drilling one or more upwardly radially extending channels from the cavity forming an injection manifold-like system which extends to the interface between the floor rock and the coal seam; injecting an oxidant or oxidant gas mixture into these channels from the surface; igniting the coal where the radially extending channels connect with the base of the coal seam; and recovering product gases generated by the gasification process through a plurality of surrounding production wells.

• Assignee: Mobil Corp
• Patent Number(s): US 4356866
• OSTI ID: 6650945
• Resource Relation: Patent File Date: Filed date 31 Dec 1980; Other Information: PAT-APPL-221725
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL GASIFICATION
IN-SITU GASIFICATION
AIR
COAL SEAMS
STEAM
COAL DEPOSITS
FLUIDS
GASES
GASIFICATION
GEOLOGIC DEPOSITS
IN-SITU PROCESSING
MINERAL RESOURCES
PROCESSING
RESOURCES
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification