E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/32 (2006.01) E21B 43/20 (2006.01) E21B 43/24 (2006.01)
Patent
CA 2062071
An oil or bitumen-producing well which has undergone water coning with resultant production of substantially only water or a very reduced amount of oil is treated to restore oil production and to prevent water coning by introducing into the location of the oil or bitumen-producing formation which has undergone water coning or into the water-producing formation which gives rise to water coning, an oil-in-water emulsion under conditions such that the oil or bitumen in the oil-in-water emulsion is caused to become entrapped in the formation to create or generate a high oil or bitumen saturation plug to form a substantially water impermeable barrier at a substantial radial distance from the point of introduction or from the well from which the oil or bitumen is produced from said formation. In the broadest aspect of this invention, production or recovery of oil or bitumen produced or recovered in the form of an oil-in-water emulsion from a porous water containing and oil or bitumen producing formation is maintained and improved by maintain- ing the temperature of the produced oil or bitumen at a temperature not lower and preferably greater than Tc wherein Tc is the minimum temperature for the oil or bitumen, such as in the form of an oil-in-water emulsion, to flow through the porous water containing and oil or bitumen producing formation.
Alberta Science And Research Authority
Cassan Maclean
Mckay Alexander S.
LandOfFree
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