| 摘要 |
Hot caustic solution is injected into an unconsolidated silty lens extending through the Athabasca bitumen reservoir between injection and production wells. Over a period of time part of the lens is rendered movable. The mud is forced to the production well and removed therefrom, leaving a steam-permeable communications zone extending between the wells. Steam can then be injected into the zone to heat the bitumen and form an emulsion which can be forced to the production well. In this way, bitumen is recovered at the surface.
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