1
Harold J Vinegar, Chester Ledlie Sandberg, Christopher Kelvin Harris, Jaime Santos Son, Fredrick Gordon Carl Jr: Conductor-in-conduit temperature limited heaters. Shell Oil Company, October 17, 2006: US07121341 (188 worldwide citation)

A heater may include an electrical conductor. Applying alternating current to the electrical conductor may generate resistively heat the electrical conductor. The electrical conductor may include an electrically resistive ferromagnetic material. The ferromagnetic material may at least partially surr ...


2
Harold J Vinegar, Ernest E Carter, Jaime Santos Son, Taixu Bai, Mohamad Fereydoon Khoda Verdian: Wax barrier for use with in situ processes for treating formations. Shell Oil Company, April 27, 2010: US07703513 (115 worldwide citation)

Methods for forming a barrier around at least a portion of a treatment area in a subsurface formation are described herein. A material including wax may be introduced into one or more wellbores. The material introduced into two or more wells may mix in the formation and congeal to form a barrier to ...


3
Chester Ledlie Sandberg, Harold J Vinegar, Christopher Kelvin Harris, Jaime Santos Son, Fredrick Gordon Carl Jr: High voltage temperature limited heaters. Shell Oil Company, August 7, 2012: US08238730 (46 worldwide citation)

A heater system may include an alternating current supply and an electrical conductor. An alternating current may be applied to one or more electrical conductors at a voltage above about 200 volts. The electrical conductors may be located in a formation. The electrical conductors may provide an elec ...


4
Harold J Vinegar, Chester Ledlie Sandberg, Christopher Kelvin Harris, Jaime Santos Son, James Louis Menotti, Fredrick Gordon Carl Jr: Temperature limited heaters for heating subsurface formations or wellbores. Shell Oil Company, June 12, 2012: US08200072 (46 worldwide citation)

Systems and methods are described for heating a subsurface formation. Alternating electrical current may be applied to one or more electrical conductors. The electrical conductors may be located in a subsurface formation. The electrical conductors may provide an electrically resistive heat output up ...


5
Ernesto Rafael Fonseca Ocampos, James Joseph Venditto, Renfeng Richard Cao, Ronald Marshall Bass, Scott Vinh Nguyen, Antonio Maria Guimaraes Leite Cruz, Damodaran Raghu, Jaime Santos Son: Circulated heated transfer fluid systems used to treat a subsurface formation. Shell Oil Company, September 18, 2012: US08267185 (43 worldwide citation)

A method for heating a subsurface formation includes applying heat from a plurality of heaters to at least a portion of the subsurface formation. A portion of one or more of the heaters are allowed to move relative to the heaters respective wellhead using sliding seals to accommodate thermal expansi ...


6
Chester Ledlie Sandberg, Harold J Vinegar, Christopher Kelvin Harris, Jaime Santos Son, Fredrick Gordon Carl Jr: Insulated conductor temperature limited heaters. Shell Oil Company, July 17, 2012: US08224164 (43 worldwide citation)

A heater may include an electrical conductor. Applying alternating current to the electrical conductor may resistively heat the electrical conductor. The electrical conductor may include an electrically resistive ferromagnetic material. The ferromagnetic material may at least partially surround a no ...


7
Chester Ledlie Sandberg, Harold J Vinegar, Christopher Kelvin Harris, Jaime Santos Son, Fredrick Gordon Carl Jr: Variable frequency temperature limited heaters. Shell Oil Company, July 17, 2012: US08224163

A heater system may include an alternating current supply and an electrical conductor. Alternating current may be applied to one or more electrical conductors at a frequency between about 100 Hz and about 1000 Hz. The electrical conductors may be located in a formation. The electrical conductors may ...


8
Chester Ledlie Sandberg, Harold J Vinegar, Christopher Kelvin Harris, Jaime Santos Son, Fredrick Gordon Carl: High voltage temperature limited heaters. Del Christensen, Shell Oil Company, July 29, 2004: US20040144540-A1

A heater system may include an alternating current supply and an electrical conductor. An alternating current may be applied to one or more electrical conductors at a voltage above about 200 volts. The electrical conductors may be located in a formation. The electrical conductors may provide an elec ...


9
Harold J Vinegar, Chester Ledlie Sandberg, Christopher Kelvin Harris, Jaime Santos Son, James Louis Menotti, Fredrick Gordon Carl: Temperature limited heaters for heating subsurface formations or wellbores. Del Christensen, Shell Oil Company, July 29, 2004: US20040146288-A1

Systems and methods are described for heating a subsurface formation. Alternating electrical current may be applied to one or more electrical conductors. The electrical conductors may be located in a subsurface formation. The electrical conductors may provide an electrically resistive heat output up ...


10
Chester Ledlie Sandberg, Harold J Vinegar, Christopher Kelvin Harris, Jaime Santos Son, Fredrick Gordon Carl: Insulated conductor temperature limited heaters. Del Christensen, Shell Oil Company, July 22, 2004: US20040140096-A1

A heater may include an electrical conductor. Applying alternating current to the electrical conductor may resistively heat the electrical conductor. The electrical conductor may include an electrically resistive ferromagnetic material. The ferromagnetic material may at least partially surround a no ...