Recovery of underground hydrocarbons

Details Recovery of underground hydrocarbons Recovery of underground hydrocarbons

1981-08-24

1982-11-16

Novosad, Stephen J.

Wells

Processes

Electric current or electrical wave energy through earth for...

166266, E21B 4324

Patent

active

043590918

ABSTRACT:
The method of extracting hydrocarbons from an underground deposit of material containing hydrocarbons, which comprises injecting aqueous solutions of low resistivity into at least a portion of the deposit, heating a portion of the deposit underground by means of a varying magnetic field and controlling the flow of fluids from the heated portion of the deposit to the delivery point until the temperature of the heated portion of the deposit has reached a selected value at which substantial pyrolysis occurs of hydrocarbons released from the deposit. The value of temperature resulting is less than the break-out pressure of the overburden. When the selected temperature and the pressure have been reached the flow of fluids from the heated portion of the deposit is controlled by a pressure controller to maintain the pressure until heating stops. At this time the vapor pressure is reduced to atmospheric pressure.

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