Heater utilizing copper-nickel alloy core

Patent · Tue Oct 22 00:00:00 EDT 1991

OSTI ID:6973988

Van Egmond, C F.H.

This patent describes a well heater. It comprises: at least one heating section which is capable of extending for at least a hundred feet within a well borehole adjacent to an interval of subterranean earth formation to be heated, contains at least one electrical heating cable, and contains a combination of heating cable core resistance and core cross-sectional areas capable of producing temperatures between about 600[degrees]C and 1000[degrees]C within the subterranean earth formation, wherein the heating cable is an electrical resistance heating cable comprising: a core consisting essentially of 6 percent by weight nickel and 94 percent by weight copper; electrical insulation surrounding the core; and surrounding the electrical insulation, a metal sheath; and a means of supplying electrical power to the heating cable core.

• Assignee: Shell Oil Co., Houston, TX (United States)
• Patent Number(s): US 5060287; A
• Application Number: PPN: US 7-622025
• OSTI ID: 6973988
• Resource Relation: Patent File Date: 4 Dec 1990
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
02 PETROLEUM
COPPER ALLOYS
THERMAL CONDUCTIVITY
HEATERS
MATERIALS TESTING
NICKEL ALLOYS
OIL WELLS
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATION
ALLOYS
EQUIPMENT
PHYSICAL PROPERTIES
TESTING
THERMODYNAMIC PROPERTIES
WELLS
360104* - Metals & Alloys- Physical Properties
020200 - Petroleum- Reserves
Geology
& Exploration