Acceleration of hydrocarbon gas production from coal beds

Patent · Tue Dec 17 04:00:00 EST 1991

OSTI ID:5539744

Vogt, T C; Obluda, G R

This paper describes the method for producing coal bed methane from a coal seam within a formation. It comprises: providing at least one completed gas production well into the seam which fluidly communicates with the seam only; completing through the coal seam at least one injection well proximate to the production well which injection well does not communicate fluidly with the coal seam but which communicates fluidly with a horizontal fracture at a lower level in the formation; injecting via the injection well a hot fluid into the horizontal fracture at a pressure less than required to fracture the formation and in a quantity sufficient to heat the coal seam thereby desorbing and volatilizing methane in the seam; and producing desorbed methane from the coal seam via the production well.

• Assignee: Mobil Oil Corp., Fairfax, VA (United States)
• Patent Number(s): A; US 5072990
• Application Number: PPN: US 7-551340
• OSTI ID: 5539744
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ALKANES
CHEMICAL COMPOSITION
COAL DEPOSITS
COAL SEAMS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
HYDROCARBONS
METHANE
MINERAL RESOURCES
NATURAL GAS
ORGANIC COMPOUNDS
RECOVERY
RESOURCES