Sulfur barrier for use with in situ processes for treating formations
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United States of America Patent
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Dec 15, 2009
Grant Date -
Jul 24, 2008
app pub date -
Apr 20, 2007
filing date -
Apr 21, 2006
priority date (Note) -
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Abstract
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.
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