A method for treating a tar sands formation includes providing heat to at least part of a hydrocarbon layer in the tar sands formation from a plurality of heaters located in the formation. Heat is allowed to transfer from the heaters to at least a portion of the formation. A pressure in the portion of the formation is controlled such that the pressure remains below a fracture pressure of the formation overburden while allowing the portion of the formation to heat to a selected average temperature of at least about 280° C. and at most about 300° C. The pressure in the portion of the formation is reduced to a selected pressure after the portion of the formation reaches the selected average temperature.
申请公布号
EP2142758(A1)
申请公布日期
2010.01.13
申请号
EP20080746209
申请日期
2008.04.18
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人
HARRIS, CHRISTOPHER KELVIN;KARANIKAS, JOHN MICHAEL;NGUYEN, SCOTT VINH