E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/24 (2006.01)
Patent
CA 2668983
A SAGD system including a string defining an axial flow channel and an annular flow pathway, a fluid access structure between the axial flow channel and the annular flow pathway, and a valve disposed within the annular flow pathway. The valve being selectively closable to selectively inhibit annular flow in an uphole direction. A method for treating a SAGD formation.
Amaral Anderson Da Silva
Baker Bradley Gene
Baker Hughes Incorporated
Sim & Mcburney
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