Patent ID: 7374371

Claim:
A brine sealant solution useful in generating an earthen hardpan comprising: a) a deliquescent aqueous solution of salts of monovalent and divalent cations wherein the monovalent cation salts are selected from the group consisting of sodium chloride and potassium chloride, and wherein the divalent cation salts consist of magnesium chloride and calcium chloride; b) bentonite clay in a sufficient amount such that when said composition is mixed with the deliquescent aqueous solution of a) above, the clay particles disperse and are capable of entering into and filling seepage capillaries in an earthen space to be sealed; c) the ratio by weight of magnesium chloride to calcium chloride is about 5 to 1; d) the percentage by weight of sodium chloride or potassium chloride is sufficient to suspend and disperse the bentonite clay in the solution; and e) the density of the final solution is between 10 to 11 pounds per gallon of solution.