Recovery of bitumen from bituminous sand

Patent · Tue Mar 02 04:00:00 EST 1971

OSTI ID:5601827

Gray, G R; Cymbalisty, L M.O.

A process is described for the recovery of bitumen from tar sand in which a fluid slurry of tar sand is introduced into a body of hot water with bitumen rising to the top in the form of a layer of bituminous emulsion and sand settling to the bottom. Water is introduced immediately below the layer of bituminous emulsion to displace solids, froth particles associated with coarse solids, and prevent entrainment of fines in the emulsion. The additional water is preferably introduced into a quiescent zone in which a slow downward velocity of water is maintained and, water may be withdrawn from the lower portion of the quiescent zone to maintain a suitable downward velocity of water within the quiescent zone. (4 claims)

• Assignee: Cities Serv Athabasca Inc.
• Patent Number(s): US 3567621
• OSTI ID: 5601827
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040400* -- Oil Shales & Tar Sands-- Oil Production
Recovery
& Refining
040401 -- Oil Shales & Tar Sands-- In Situ Methods
True & Modified
AQUEOUS SOLUTIONS
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
COLLOIDS
DISPERSIONS
EMULSIONS
ENERGY SOURCES
ENGINEERING
FLUID INJECTION PROCESSES
FOSSIL FUELS
FUELS
HOT-WATER PROCESSES
HYDROGEN COMPOUNDS
MATERIALS
MIXTURES
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
RECOVERY
RESERVOIR ENGINEERING
ROCKS
SAND
SANDSTONES
SEDIMENTARY ROCKS
SEPARATION PROCESSES
SLURRIES
SOLUTIONS
SUSPENSIONS
TAR
WATER