Systems for producing bitumen from tar sands
Patent
·
OSTI ID:6620253
A system for producing bitumen from unconsolidated tar sands in an open well includes a screen positioned in the well large enough to pass a majority of the formation sand and small enough to retain a gravel packing material, a pair of high pressure fluid lateral nozzles fracturably fastened in the bottom of the screen, a wash pipe extending down into the screen for detachably connecting to the nozzles and for washing out a cavity in the tar sand formation, a ball weight for dropping down the wash pipe for knocking the nozzles out of the bottom of the screen for allowing a consolidated gravel pack material to emerge from the screen bottom and form the gravel pack on the screen, and the wash pipe being replaceable with a production tube packed off at the screen mid point for allowing hot aqueous fluids to flow from a screen annulus formed between the production tube and the screen into the cavity for producing oil.
- Assignee:
- Texaco Inc.
- Patent Number(s):
- US 4114687
- OSTI ID:
- 6620253
- Country of Publication:
- United States
- Language:
- English
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