Sulfur barrier for use with in situ processes for treating...

Details Sulfur barrier for use with in situ processes for treating... Sulfur barrier for use with in situ processes for treating...

E - Fixed Constructions

21

B

E21B 33/138 (2006.01) E21B 43/24 (2006.01) E21B 43/30 (2006.01)

Patent

CA 2649348

Methods for forming a barrier around at least a portion of a treatment area in a subsurface formation are described herein. Sulfur may be introduced into one or more wellbores located inside a perimeter of a treatment area in the formation having a permeability of at least 0.1 darcy. At least some of the sulfur is allowed to move towards portions of the formation cooler than the melting point of sulfur to solidify the sulfur in the formation to form the barrier.

L'invention concerne la formation d'une barrière autour d'au moins une partie d'une zone de traitement dans une formation de subsurface. Du soufre peut être introduit dans un ou plusieurs sondages situés dans un périmètre d'une zone de traitement dans une formation dont la perméabilité est d'au moins 0,1 darcy. Au moins une partie de soufre peut se déplacer vers des parties de la formation dont la température est inférieure au point de fusion du soufre pour solidifier le soufre dans la formation pour former la barrière.

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