A new recovery process which uses concentric coiled tubing has been developed to improve production capabilities in heavy oil. The process, called Single A . t d G 't D' PatPend (SW Well -Steam SSIS e ravi y ramage -SAGD) relies on continuous injection of high quality steam into the toe of a horizontal well while simultaneously producing mobilized oil from the same wellbore. The well is therefore dual completed with both, production tubulars and Insulated Concentric Coiled TubingPatPend (ICCT).Having completed an extensive study into the design and fabrication of ICCT, a number of single well, SAGD installations have already been completed and are in production. This paper will review this process and will document production results from some of these early wells.

A new recovery process which uses concentric coiled tubing has been developed to improve production capabilities in heavy oil. The process, called Single A . t d G 't D' PatPend (SW Well -Steam SSIS e ravi y ramage -SAGD) relies on continuous injection of high quality steam into the toe of a horizontal well while simultaneously producing mobilized oil from the same wellbore. The well is therefore dual completed with both, production tubulars and Insulated Concentric Coiled TubingPatPend (ICCT).Having completed an extensive study into the design and fabrication of ICCT, a number of single well, SAGD installations have already been completed and are in production. This paper will review this process and will document production results from some of these early wells.