Peter Van Meurs, Cor F Van Egmond: Formation-tailored method and apparatus for uniformly heating long subterranean intervals at high temperature. Shell Oil Company, February 18, 1986: US04570715 (306 worldwide citation)

Long intervals of subterranean earth formations are heated at high temperatures for long times with an electrical heater containing spoolable, steel sheathed, mineral insulated cables which have high electrical conductivities, enabling them to heat the earth formations at a substantially uniform rat ...

Charles R Stahl, Michael A Gibson, Christian W Knudsen: Thermally-enhanced oil recovery method and apparatus. Carbotek, Neal J Mosely, September 22, 1987: US04694907 (301 worldwide citation)

A thermally-enhanced oil recovery method and apparatus for exploiting deep well reservoirs utilizes electric downhole steam generators to provide supplemental heat to generate high quality steam from hot pressurized water which is heated at the surface. A downhole electric heater placed within a wel ...

Van Egmond Cornelis Fh, Vanmeurs Peter: Dispositif de chauffage longitudinal a resistance electrique a debit de chaleur variable, Heating rate variant elongated electrical resistance heater. Shell Canada, SMART & BIGGAR, May 2, 1989: CA1253555 (294 worldwide citation)

A B S T R A C T HEATING RATE VARIANTELONGATED ELECTRIC RESISTANCE HEATER An electrical resistance heater capable of generating heat atdifferent rates at different locations along its length comprises acontinuous and unitary electrical conductor having a thicknesswhich is different at different locat ...

Raymond S Kasevich, Myer Kolker, Arthur S Dwyer: In situ radio frequency selective heating system. Raytheon Company, Walter F Dawson, Richard M Sharkansky, Joseph D Pannone, July 3, 1984: US04457365 (294 worldwide citation)

The process and apparatus for extracting the products of kerogen in situ from an oil shale body by supplying energy selectively to the kerogen by high frequency electric fields in the frequency range between 100 kilohertz and 1000 megahertz at an intensity which heats the kerogen to a temperature ra ...

Cor F Van Egmond, Peter Van Meurs: Heating rate variant elongated electrical resistance heater. November 3, 1987: US04704514 (292 worldwide citation)

An electrical resistance heater capable of generating heat at different rates at different locations along its length comprises a continuous and unitary electrical conductor having a thickness which is different at different locations along its length.

Scott Lee Wellington, Thomas Mikus, Harold J Vinegar, John Michael Karanikas: Flameless combustor. Shell Oil Company, May 4, 1999: US05899269 (289 worldwide citation)

A combustor method and apparatus is provided. The method utilizes flameless combustion with one or more of three improvements to enhance ignition of the flameless combustor. A catalytic surface can be provided within a combustion chamber to provide flameless combustion at least in the vicinity of th ...

Cornelis F H Van Egmond: Subterranean heaters. Shell Oil Company, November 19, 1991: US05065818 (281 worldwide citation)

An electrical resistance subterranean heater is provided which is cemented directly in a well borehole without a casing in the borehole within the zone to be heated. The absence of the casing results in an economical installation.

Peter Vanmeurs, Monroe H Waxman, Harold J Vinegar: In-situ steam drive oil recovery process. Shell Oil Company, February 3, 1987: US04640352 (281 worldwide citation)

An oil and water-containing subterranean reservoir can be heated in a manner capable of inducing an economically feasible production of oil from zones which were initially so impermeable as to be undesirably unproductive in response to injections of oil recovery fluids. Treatment zones of specified ...

Bielamowicz Lawrence James, de Rouffignac Eric, Vinegar Harold J, Wellington Scott Lee: Wellbore electrical heater. Shell Int Research, September 8, 1999: EP0940558-A1 (274 worldwide citation)

A heater is disclosed which comprises an electrical insulating material surrounding an annular heating element configuration; wherein there is no casing surrounding an annular heating element configuration.

Cor F Vanegmond, Peter Van Meurs: Heater cable installation. Shell Oil Company, February 25, 1986: US04572299 (270 worldwide citation)

A well heater is installed in a well by spooling electrical cable assemblies for heating and supplying power, in proper sequence, on at least one spooling means, unspooling them and attaching them to a heat- and tension-stable support means as the resulting assembly is drawn into the well by a weigh ...