Thermal oil recovery method

Details Thermal oil recovery method Thermal oil recovery method

1983-10-27

1985-06-18

Novosad, Stephen J.

Wells

Processes

Heating, cooling or insulating

166 57, 166 77, E21B 4324, E21B 3600

Patent

active

045236445

ABSTRACT:
A system for recovery of oil, particularly viscous oil, from subsurface formations penetrated by highly deviated or horizontal bore holes by circulating therethrough a heated fluid. The heated fluid is circulated through a flexible conduit which is pulled into the bore hole by thrust generating means at the forward end thereof. Power to operate the thrust generating means is also conducted through the conduit. Produced oil is returned via the conduit.

REFERENCES:
patent: 2251916 (1941-08-01), Cross
patent: 2911047 (1959-11-01), Henderson
patent: 3373805 (1968-03-01), Boberg et al.
patent: 3375885 (1968-04-01), Scott et al.
patent: 3844362 (1974-10-01), Elbert et al.
patent: 3873156 (1975-03-01), Jacoby
patent: 4401159 (1983-08-01), Kofahl

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