Inventors:
Gregory L. Brooks - Oklahoma City OK
Larry W. Zimmer - Norman OK
Allan B. Fullerton - Norman OK
Raymond L. Morris - Oklahoma City OK
Assignee:
Halliburton Company - Duncan OK
International Classification:
B65G 500
Abstract:
An underground compressed natural gas ("CNG") storage and service system is disclosed. The system includes a plurality of underground storage containers, a compressor for compressing natural gas, and first conduit means for conducting CNG from the compressor to the storage containers and from the storage containers to a vehicle or other location. In one embodiment, each storage container is an elongated (e. g. , 100 feet) string of conventional oil field casing sealed at both ends and positioned in a borehole drilled into the earth. A reinforcing concrete sheath surrounds the casing. A siphon line is disposed within the casing for removing contaminating material that accumulates therein.
Also provided is a method of installing an underground CNG storage apparatus having a predetermined gas volume capacity.