Cenovus Energy Inc.
PROCESS FOR PRODUCING FLUIDS FROM A HYDROCARBON-BEARING FORMATION

Abstract:

A process for producing fluids from a subterranean hydrocarbon-bearing formation includes injecting mobilizing fluid, including a solvent, into the hydrocarbon-bearing formation through an injection well and into the hydrocarbon-bearing formation, producing produced fluids from the hydrocarbon-bearing formation to a surface through a production well, discontinuing injecting the mobilizing fluid and injecting a loss circulation material and a fluid into one of the injection well and the production well, opening the one of the injection well and the production well to perform work on the one of the injection well and the production well, and closing the one of the injection well and the production well. After degradation of the loss circulation material, injecting the mobilizing fluid and producing the produced fluids is commenced.