Patent attributes
A process includes injecting mobilizing fluid, including a solvent, through an injection well and into a hydrocarbon-bearing formation. Fluids are produced from the hydrocarbon-bearing formation to a surface through a well, and injection of the mobilizing fluid is discontinued. Gas flow to the surface from the well is inhibited by injecting a loss circulation material that inhibits solvent-vapor flow from exiting the formation through the well such that a fluid column that includes the well kill fluid, the loss circulation material, or a combination thereof is maintained within the well. The well is opened to perform work thereon After degradation of the loss circulation material, injecting the mobilizing fluid and producing the produced fluids is commenced.
