Allan B Fullerton

US Patent:

52075303, May 4, 1993

Filed:

Jul 29, 1992

Appl. No.:

7/922060

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

US Classification:

405 53

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.