SW-SAGD WITH BETWEEN HEEL AND TOE INJECTION

摘要

The present disclosure relates to a particularly effective well configuration that can be used for single well steam assisted gravity drainage (SW-SAGD), wherein steam injection occurs at one or more points between the heel and toe, instead of at the toe as in the prior art.

主权项

1) A method of producing heavy oils from a reservoir by single well steam and gravity drainage (SW-SAGD), comprising:
a) providing a horizontal well below a surface of a reservoir; b) said horizontal well having a toe end and a heel end and a middle therebetween; c) injecting steam into one or more injection points between said toe end and said heel end; and d) simultaneously producing mobilized heavy oil; e) wherein said method produces more oil at a time point than a similar SW-SAGD well with steam injection only at said toe.