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TitleDateType
1 Use of a submersible viscometer in the primary separation step of the hot water process for recovery of bitumen from tar sand1987-01-20Text
2 Treatment of primary tailings and middlings from the hot water extraction process for recovering bitumen from tar sand1985-10-08
3 Thermal drainage process for recovering hot water-swollen oil from a thick tar sand1987-05-26
4 System for handling the underflow from a primary separation vessel in the tar sand hot water process1978-08-08
5 System for recovering viscous petroleum from thick tar sand1977-04-26
6 Supercritical tar sand extraction1982-07-27
7 Tar sand processing apparatus1976-04-20
8 Tar sand production using thermal stimulation1985-04-02
9 Solvent extraction of tar sand1979-02-13
10 Simultaneous upgrading of tar sand bitumen and coal by corefining1988-08-16
11 Solvent extraction process for recovering bitumen from tar sand1987-06-30
12 Separation of bitumen from dry tar sands1978-10-17
13 Separation of solids from tar sands extract1978-06-13
14 Recycle of secondary froth in the hot water process for extracting bitumen from tar sand1988-10-11
15 Recovery of petroleum from viscous asphaltic petroleum containing formations including tar sand deposits1977-08-16
16 Recovering viscous petroleum from thick tar sand1976-11-30
17 Recovering hydrocarbons from tar sand or heavy oil reservoirs1994-06-07
18 Recovery of heavy crude oil or tar sand oil or bitumen from underground formations1992-09-08
19 Recovery of bitumen from tar sand1981-02-10
20 Recovery of heavy crude oil or tar sand oil or bitumen from underground formations1989-07-11
21 Production of bitumen from a tar sand formation1976-05-25
22 Multiple drain method for recovering oil from tar sand2001-07-24Text
23 Process for selective recovery of relatively metals-free bitumen from tar sand using a halogenated aliphatic solvent in combination with a second solvent1980-08-12
24 Process for separating high viscosity bitumen from tar sands1984-12-04
25 Process to separate bituminous material from sand (tar sands)1982-08-03
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