Minimizing gravity override of carbon dioxide with a gel

Details Minimizing gravity override of carbon dioxide with a gel Minimizing gravity override of carbon dioxide with a gel

1986-12-12

1988-11-08

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166272, 166274, 166295, E21B 33138, E21B 4322

Patent

active

047829010

ABSTRACT:
A process for minimizing gravity override via carbon dioxide combined with a sized gel. A polysaccharide gel of a size sufficiently greater than the pores contained in a more permeable formation area is prepared ex situ in the presence of sodium hydroxide. Said gel is then pumped into said formation causing pores in the more permeable formation area to be blocked off. Thereafter, carbon dioxide flooding is commenced and said flood is directed into the less permeable formation area causing hydrocarbonaceous fluids to be produced therefrom.

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