Multi-component aqueous gel solution for control of delayed gelation timing and for resulting gel properties
A water based solution having a controllable gel time is disclosed. The solution has predetermined ratios of a water soluble silicate solution having at least one alkali metal, a predetermined ratio of a water dispersible polymer, and a predetermined ratio of a water soluble initiator containing a reactive carbonyl compound.
1. A water based solution having a controllable gel time, the solution comprising:
a predetermined ratio of water;
a predetermined ratio of a water soluble silicate solution having at least one alkali metal;
a predetermined ratio of a non-crosslinked water dispersible polymer;
a predetermined ratio of a water soluble initiator containing at least one organic reactive carbonyl compound other than aldehyde; and
said water soluble silicate solution, water dispersible polymer, and said water soluble initiator combine to form a single stage alkaline fluid.
2. The solution of claim 1 , wherein the at least one alkali metal is sodium.
3. The solution of claim 1 , wherein the at least one alkali metal is potassium.
4. The solution of claim 1 , wherein the water soluble silicate solution further comprises:
about 38 to 55 parts solid per hundred parts of solution;
a molar ratio of silicon dioxide to the at least one alkali metal in the range from about 3:1 to about 3.5:1;
wherein the pH of the solution is from about 10 to 13; and
wherein the concentration of alkali metal silicate in the solution is between about 1 and 30 percent.
5. The solution of claim 1 , wherein the polymer is selected from the group consisting of polyacrylamide, polymethacrylamide and cellulosic polymers.
6. The solution of claim 1 , wherein the polymer is from 0.01 to 1 percent by weight of the total solution.
7. The solution of claim 1 , wherein the at least one reactive carbonyl compound is selected from the group consisting of esters, amides, carbonates, anhydrides, ketones, carbohydrates, carbamates, ureas, and hydantoins.
8. The solution of claim 1 , wherein the initiator is between about 0.1 and 30 percent by weight of the solution.
9. The solution of claim 1 , further comprising a stabilizing crosslinked polyacrylate super absorbent polymer.
10. The solution of claim 9 , wherein the stabilizing amount of a crosslinked polyacrylate super absorbent polymer is from about 0.01 percent to about 2 percent by weight of the total solution.
11. The solution of claim 1 , further comprising a stabilizing cellulose polymer.
12. A water based solution having a controllable gel time, the solution consisting essentially of:
a predetermined ratio of a water soluble silicate solution having at least one alkali metal;
a predetermined ratio of a water dispersible substantially linear polymer selected from the group consisting of polyacrylamide, polymethyl acrylamide and cellulosic polymers;
a predetermined ratio of a water soluble initiator containing at least one organic reactive carbonyl compound selected from a group consisting of esters, carbonates, amides, anhydrides, nitriles, sulfoxides, ureas, and carbamates; and
a predetermined ratio of water to dissolve, disperse and achieve said predetermined ratios of said water soluble silicate solution, said water dispersible polymer and said water soluble initiator.
13. A water based solution having a controllable gel time, the solution comprising:
a predetermined ratio of water;
a predetermined ratio of a water soluble silicate solution having at least one alkali metal;
a predetermined ratio of a non-crosslinked water dispersible polymer;
a predetermined ratio of a water soluble initiator containing at least one organic reactive carbonyl compound other than aldehyde; and
said water soluble silicate solution, water dispersible polymer, and said water soluble initiator combine to form a single stage solution with an initial pH above 10.
14. The solution of claim 13 , wherein the water soluble silicate solution further comprises:
about 38 to 55 parts solid per hundred parts of solution;
a molar ratio of silicon dioxide to the at least one alkali metal in the range from about 3:1 to about 3.5:1;
wherein the pH of the solution is from about 10 to 13; and
wherein the concentration of alkali metal silicate in the solution is between about 1 and 30 percent.
15. The solution of claim 13 , wherein the polymer is selected from the group consisting of polyacrylamide and polymethacrylamide.
16. The solution of claim 13 , wherein the polymer is from 0.01 to 1 percent by weight of the total solution.
17. The solution of claim 13 , wherein the at least one reactive carbonyl compound is selected from the group consisting of esters, amides, carbonates, anhydrides, ketones, carbohydrates, carbamates, ureas, and hydantoins.