Methods for treating hydrocarbon formations

Details Methods for treating hydrocarbon formations Methods for treating hydrocarbon formations

E - Fixed Constructions

21

B

E21B 43/24 (2006.01) E21B 43/241 (2006.01)

Patent

CA 2736672

Systems and methods for treating a subsurface formation are described herein. Some method include providing heat to a section of the formation from a plurality of heaters located in the formation, allowing the heat to transfer from the heaters to heat a portion of the section to a selected temperature to generate an in situ deasphalting fluid in the section, contacting at least a portion of the in situ deasphalting fluid with hydrocarbons in the section to remove at least some asphaltenes from the hydrocarbons in the section, and producing at least a portion of the deasphalted hydrocarbons from the formation. The in situ deasphalting fluid may include hydrocarbons having a boiling range distribution between 35 °C and 260 °C at 0.101 MPa. A majority of the hydrocarbons in the section may have a boiling point greater than 260 °C at 0.101 MPa.

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