1
Neil R Edmunds: In-situ recovery of viscous hydrocarbonaceous crude oil. Gulf Canada, R H Saunders, February 26, 1985: US04501326 (238 worldwide citation)

A process for recovering heavy hydrocarbonaceous oil in situ is disclosed. After a communication path is established between injection and production wells, a hot viscous fluid at least 20% of which is produced hydrocarbonaceous oil from the production well is circulated between the wells providing ...


2
Ian P Fisher, Nicolas G Samman: Catalytic hydrocracking in the presence of hydrogen donor. Gulf Canada, R H Saunders, November 27, 1984: US04485004 (71 worldwide citation)

A process is disclosed in which a heavy hydrocarbon oil is converted to lighter products by hydrocracking in the presence of a hydrogen donor material boiling from 200.degree. C. to 300.degree. C. and a particulate hydrogenation catalyst comprising one of cobalt, molybdenum, nickel, tungsten and mix ...


3
Herbert S Johnson: Hydraulic mining of tar sands with submerged jet erosion. Gulf Canada, R H Saunders, March 20, 1984: US04437706 (58 worldwide citation)

Bitumen is separated and recovered from tar sands deposits by use of special hydraulic mining techniques. One or more jets of hydraulic mining fluid are projected by a nozzle or nozzles against a face of a tar sands deposit and advanced towards the face as the face erodes under the jetting action. S ...


4
Brian D Wright, Raymond A McBeth, Egon Wessels: Arctic barge drilling unit. Gulf Canada, R H Saunders, D R Morrison, March 6, 1984: US04434741 (19 worldwide citation)

An improved marine drilling barge for use in ice-covered water is disclosed. The barge has, besides a conventional moon pool through which conventional marine drilling operations can proceed, a roughly circular polygonal hull plan, with an elevation of two truncated pyramid sections joined through t ...


5
Lois L McCorriston: Process using sulphate reagent for recovering vanadium from cokes derived from heavy oils. Gulf Canada, D R Morrison, R H Saunders, June 21, 1983: US04389378 (13 worldwide citation)

Vanadium values are recovered from cokes and ashes derived from heavy oils by a novel process comprising heating in the presence of alkali metal sulphate, contacting the resulting solid residue with water and recovering the vanadium values dissolved therein.


6
John C Bruce: Mobile bottom-founded caisson for arctic operations. Gulf Canada, R H Saunders, October 30, 1984: US04479742 (9 worldwide citation)

A floatable bottom-founded caisson is disclosed that is suitable for use in ice-covered waters. The annular caisson structure has a frusto-conical upwardly tapered inner wall which reduces skin friction between itself and the core fill material. By the application of heat and the use of insulation, ...


7
Lois L McCorriston: Process using carbonate reagent for recovering vanadium from cokes and ashes derived from heavy oils. Gulf Canada, R H Saunders, September 18, 1984: US04472360 (9 worldwide citation)

Vanadium values are recovered from sulphur-containing cokes and ashes derived from heavy oils by a novel process comprising heating in the presence of alkali metal carbonate, contacting the resulting solid residue with water to form a leach and recovering the vanadium values dissolved therein. The a ...


8
Brian Y Wong: Beneficiation of low-rank coals by immersion in residuum. Gulf Canada, R H Saunders, July 24, 1984: US04461624 (8 worldwide citation)

A method of improving the calorific value and preventing autogenous heating of low-rank coals is disclosed which comprises crushing the coal into a particle size range from 0.1 cm to 3 cm, immersing the particles in a distillation residuum of petroleum crude oil at a temperature between 240.degree. ...


9
Lois L McCorriston: Process using carbonate reagent for recovering vanadium from cokes and ashes derived from heavy oils. Gulf Canada, R H Saunders, August 20, 1985: US04536374 (7 worldwide citation)

Vanadium values are recovered from sulphur-containing cokes and ashes derived from heavy oils by a novel process comprising heating in the presence of alkali metal carbonate, contacting the resulting solid residue with water to form a leach and recovering the vanadium values dissolved therein. The h ...



Click the thumbnails below to visualize the patent trend.