| PATENT ASSIGNEE'S COUNTRY | Canada |
| UPDATE | 11.00 |
| PATENT ASSIGNEE | Alberta Oil Sands Technology & Research Authority |
| PATENT CLAIMS |
Method for controlling the flow of fluid in subterranean formation having at least first region having (i) Na cation & (ii) first permeability K1, with respect to said fluid - Making an inhibitive electrolyte soln having water & at least one inhibitive compd., i.e. a salt - Making clay slurry by mixing > 20% of clay with said electro lyte soln so that, to the extent clay gel is produced, if any the flowability of clay slurry is not inhibited - Injecting said clay slurry into formation, so that at least a portion of clay slurry contacts first region having Na cation - Allowing clay gel to form in first region so that K1 is reduced to produce lower permeability K1L with respect to fluid - Controlling flow of majority of fluid into or from first region |
| PATENT PHOTOCOPY | Available on request |
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