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Class Information
Number: 166/60
Name: Wells > With heating, refrigerating or heat insulating means > Electrical heater in well
Description: Devices comprising electrical heating means situated below ground level.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6752210 |
In situ thermal processing of a coal formation using heat sources positioned within open wellbores |
Jun. 22, 2004 |
| 6742593 |
In situ thermal processing of a hydrocarbon containing formation using heat transfer from a heat transfer fluid to heat the formation |
Jun. 1, 2004 |
| 6715546 |
In situ production of synthesis gas from a hydrocarbon containing formation through a heat source wellbore |
Apr. 6, 2004 |
| 6712137 |
In situ thermal processing of a coal formation to pyrolyze a selected percentage of hydrocarbon material |
Mar. 30, 2004 |
| 6702041 |
Combined logging and drilling system |
Mar. 9, 2004 |
| 6702017 |
Apparatus and method for well fluid sampling |
Mar. 9, 2004 |
| 6684948 |
Apparatus and method for heating subterranean formations using fuel cells |
Feb. 3, 2004 |
| 6681859 |
Downhole oil and gas well heating system and method |
Jan. 27, 2004 |
| 6664522 |
Method and apparatus for sealing multiple casings for oil and gas wells |
Dec. 16, 2003 |
| 6631761 |
Wet electric heating process |
Oct. 14, 2003 |
| 6617556 |
Method and apparatus for heating a submarine pipeline |
Sep. 9, 2003 |
| 6588503 |
In Situ thermal processing of a coal formation to control product composition |
Jul. 8, 2003 |
| 6540018 |
Method and apparatus for heating a wellbore |
Apr. 1, 2003 |
| 6536526 |
Method for decreasing heat transfer from production tubing |
Mar. 25, 2003 |
| 6509557 |
Apparatus and method for heating single insulated flowlines |
Jan. 21, 2003 |
| 6497279 |
Method of using a heater with a fiber optic string in a wellbore |
Dec. 24, 2002 |
| 6384389 |
Eutectic metal sealing method and apparatus for oil and gas wells |
May. 7, 2002 |
| 6360819 |
Electrical heater |
Mar. 26, 2002 |
| 6353706 |
Optimum oil-well casing heating |
Mar. 5, 2002 |
| 6343652 |
Method and device for cleaning out a well or piping blocked with gas hydrates |
Feb. 5, 2002 |
| 6318467 |
System and method for pumping and heating viscous fluids in a wellbore |
Nov. 20, 2001 |
| 6307191 |
Microwave heating system for gas hydrate removal or inhibition in a hydrocarbon pipeline |
Oct. 23, 2001 |
| 6289985 |
System intended for permanent installation of measuring sondes against the inner wall of a pipe |
Sep. 18, 2001 |
| 6285014 |
Downhole induction heating tool for enhanced oil recovery |
Sep. 4, 2001 |
| 6278095 |
Induction heating for short segments of pipeline systems |
Aug. 21, 2001 |
| 6269876 |
Electrical heater |
Aug. 7, 2001 |
| 6269882 |
Method for ignition of flameless combustor |
Aug. 7, 2001 |
| 6260615 |
Method and apparatus for de-icing oilwells |
Jul. 17, 2001 |
| 6230799 |
Ultrasonic downhole radiator and method for using same |
May. 15, 2001 |
| 6206093 |
System for pumping viscous fluid from a well |
Mar. 27, 2001 |
| 6112808 |
Method and apparatus for subterranean thermal conditioning |
Sep. 5, 2000 |
| 6032733 |
Cable head |
Mar. 7, 2000 |
| 6023554 |
Electrical heater |
Feb. 8, 2000 |
| 6019172 |
Flameless combustor |
Feb. 1, 2000 |
| 6009940 |
Production in frigid environments |
Jan. 4, 2000 |
| 6006837 |
Method and apparatus for heating viscous fluids in a well |
Dec. 28, 1999 |
| 5901788 |
Well fluid sampling tool and well fluid sampling method |
May. 11, 1999 |
| 5899269 |
Flameless combustor |
May. 4, 1999 |
| 5829519 |
Subterranean antenna cooling system |
Nov. 3, 1998 |
| 5784530 |
Iterated electrodes for oil wells |
Jul. 21, 1998 |
| 5782301 |
Oil well heater cable |
Jul. 21, 1998 |
| 5723844 |
Heating system using ferrite to convert RF energy into heat energy |
Mar. 3, 1998 |
| 5713415 |
Low flux leakage cables and cable terminations for A.C. electrical heating of oil deposits |
Feb. 3, 1998 |
| 5623576 |
Downhole radial flow steam generator for oil wells |
Apr. 22, 1997 |
| 5621844 |
Electrical heating of mineral well deposits using downhole impedance transformation networks |
Apr. 15, 1997 |
| 5621845 |
Apparatus for electrode heating of earth for recovery of subsurface volatiles and semi-volatiles |
Apr. 15, 1997 |
| 5619611 |
Device for removing downhole deposits utilizing tubular housing and passing electric current through fluid heating medium contained therein |
Apr. 8, 1997 |
| 5553666 |
Standoff insulator and method for well pump cable |
Sep. 10, 1996 |
| 5539853 |
Downhole heating system with separate wiring cooling and heating chambers and gas flow therethrough |
Jul. 23, 1996 |
| 5517593 |
Control system for well stimulation apparatus with response time temperature rise used in determining heater control temperature setpoint |
May. 14, 1996 |
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