Filters: Date: "1978-10-17" Collection: "ir_eua"
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Method and apparatus for recovering viscous petroleum from thick tar sand | 1978-10-17 | viscous petroleum recovery; thick tar sand; closed-loop flow tath; production well; patent | Recovery of viscous petroleum such as from a thick tar sand formation is assisted using a closed-loop flow path formed in a production well extending from the earth's surface through a substantial portion of the formation for conducting hot fluid to reduce the viscosity of the petroleum in the forma... |
| 2 |
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Separation of bitumen from dry tar sands | 1978-10-17 | bitumen separation; bitumen recovery; dry tar sands | A process for the separation and recovery of bitumen from dry tar sands or sands with negligible quantities of connate water. The process includes comminuting the tar sands to an average particle size of approximately one centimeter in diameter and digesting the comminuted tar sand in a hot, aqueous... |
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