In situ recovery from a hydrocarbon containing formation

Details In situ recovery from a hydrocarbon containing formation In situ recovery from a hydrocarbon containing formation

E - Fixed Constructions

21

B

E21B 43/24 (2006.01) C01B 3/24 (2006.01) C01C 1/04 (2006.01) C07C 4/04 (2006.01) E21B 36/00 (2006.01) E21B 36/02 (2006.01) E21B 36/04 (2006.01) E21B 43/243 (2006.01) E21B 43/40 (2006.01)

Patent

CA 2407022

A hydrocarbon containing formation may be treated using an in situ thermal process. Heat may be applied to the formation to raise a temperature of a portion (805) of the formation to a pyrolysis temperature. Heat input into the formation may be controlled to raise the temperature of portion (805) at a selected rate during pyrolysis of hydrocarbons within the formation. A mixture (807) of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. The mixture (807) may be separated into condensable hydrocarbons (815) and non-condensable hydrocarbons (813) . The condensable hydrocarbons (815) removed from the formation may be a high quality oil that has a relatively low olefin content and a relatively high API gravity.

Il est possible de traiter une formation contenant des hydrocarbures à l'aide d'un processus thermique in situ. A cet effet on applique à une partie de la formation de la chaleur la portant à la température de pyrolyse. L'apport de chaleur doit être réglé pour que l'élévation de température se fasse à une vitesse donnée pendant la pyrolyse à l'intérieur de la formation. On peut ainsi extraire de la formation un mélange d'hydrocarbures, du H2 et/ou d'autres fluides. Le mélange est ensuite séparé en hydrocarbures condensables et non condensables, les condensables extraits de la formation peuvent donner un pétrole de haute qualité à teneur relativement faible en oléfines et à degré API relativement élevée.

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