Recovery of hydrocarbons by in situ thermal extraction

Details Recovery of hydrocarbons by in situ thermal extraction Recovery of hydrocarbons by in situ thermal extraction

1975-08-13

1976-05-04

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166 60, E21B 4324

Patent

active

039541401

ABSTRACT:
Hydrocarbons are recovered from a subterranean formation by providing a plurality of generally horizontal boreholes in the formation. The boreholes are vertically spaced across the thickness of the formation and extend from the top to the bottom thereof. Selected boreholes are heated by means of an external source to drive off hot hydrocarbon gases. The hot gases are fed to selected, unheated boreholes to effect a preheating of the selected boreholes and to cool the hot gases prior to their recovery from the formation.

REFERENCES:
patent: 1816260 (1931-07-01), Lee
patent: 2497868 (1950-02-01), Dalin
patent: 2634961 (1953-04-01), Ljungstrom
patent: 2788956 (1957-04-01), Pevere et al.
patent: 2923535 (1960-02-01), Ljungstrom
patent: 3601193 (1971-08-01), Grady

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