Assignee
PETRO CANADA EXPLORATION INC
18 patents
Top patents by PatentIndex Score
US4084637AApr 18, 1978
Method of producing viscous materials from subterranean formations
PETRO CANADA EXPLORATION INC378 citations96
US4010799AMar 8, 1977
Method for reducing power loss associated with electrical heating of a subterranean formation
PETRO CANADA EXPLORATION INC298 citations94
US4474616AOct 2, 1984
Blending tar sands to provide feedstocks for hot water process
PETRO CANADA EXPLORATION INC29 citations91
US4146125AMar 27, 1979
Bitumen-sodium hydroxide-water emulsion release agent for bituminous sands conveyor belt
PETRO CANADA EXPLORATION INC44 citations91
US4433239AFeb 21, 1984
Method and apparatus for on-line monitoring of bitumen content in tar sand
PETRO CANADA EXPLORATION INC32 citations87
US4514305AApr 30, 1985
Azeotropic dehydration process for treating bituminous froth
PETRO CANADA EXPLORATION INC104 citations86
US4456536AJun 26, 1984
Skimmer apparatus for recovering bitumen
PETRO CANADA EXPLORATION INC55 citations85
US4372174AFeb 8, 1983
Method and apparatus for sampling a core of tar sand
PETRO CANADA EXPLORATION INC30 citations84
US4383914AMay 17, 1983
Dilution centrifuging of bitumen froth from the hot water process for tar sand
PETRO CANADA EXPLORATION INC44 citations81
US4225433ASep 30, 1980
Filtration of hot water extraction process whole tailings
PETRO CANADA EXPLORATION INC28 citations78
US4282103AAug 4, 1981
Method for controlling flocculant addition to tar sand tailings
PETRO CANADA EXPLORATION INC28 citations73
US4225422ASep 30, 1980
Beneficiation of heavy minerals from bituminous sands residues by dry screening
PETRO CANADA EXPLORATION INC27 citations73
US4462892AJul 31, 1984
Control of process aid used in hot water process for extraction of bitumen from tar sand
PETRO CANADA EXPLORATION INC13 citations72
US4084639AApr 18, 1978
Electrode well for electrically heating a subterranean formation
PETRO CANADA EXPLORATION INC17 citations71
US4328710AMay 11, 1982
Homogenizer/subsampler for tar sand process streams
PETRO CANADA EXPLORATION INC8 citations69
US4284360AAug 18, 1981
Homogenizer/subsampler for tar sand process streams
PETRO CANADA EXPLORATION INC16 citations69
US4489828ADec 25, 1984
Device for splicing cable ends
PETRO CANADA EXPLORATION INC17 citations60
US4082646AApr 4, 1978
Coking of bituminous solids with hot solids recycle
PETRO CANADA EXPLORATION INC4 citations45