HIGH TEMPERATURE FRACTURING FLUIDS WITH NANO-CROSSLINKERS
A fracturing fluid system for increasing hydrocarbon production in a subterranean reservoir formation comprising a fluid composition and a base fluid, the fluid composition comprising a nano-crosslinker, and a base polymer; and the base fluid operable to suspend the fluid composition, the base fluid comprising water; wherein the fluid composition and the base fluid are combined to produce the fracturing fluid system, wherein the fracturing fluid system is operable to stimulate the subterranean reservoir formation. In certain embodiments, the nano-crosslinker is an amine-containing nano-crosslinker and the base polymer is an acrylamide-based polymer. In certain embodiments, the fracturing fluid systems comprise proppants for enhancing hydraulic fracturing stimulation in a subterranean hydrocarbon reservoir.
1 . A fracturing fluid system for increasing hydrocarbon production in a subterranean reservoir formation, the fracturing fluid system comprising:
a fluid composition, the fluid composition comprising:
a base polymer, and
a nano-crosslinker, the nano-crosslinker comprising:
a nanomaterial, and
a crosslinker; and
a base fluid, wherein the base fluid comprises water, wherein the polymer loading of the base polymer is less than 60 pounds of base polymer per thousand gallons base fluid (pptg).
2 . The fracturing fluid system of claim 1 , wherein the crosslinker comprises a chemical group selected from the group consisting of carbonyl, sulfhydryl, amine and imine.
3 . The fracturing fluid system of claim 1 , wherein the nanomaterial is selected from the group consisting of silica, cellulose, carbon-based materials and combinations thereof.
4 . The fracturing fluid system of claim 1 , wherein the base polymer is operable to chemically bond to the crosslinker of the nano-crosslinker to form a network.
5 . The fracturing fluid system of claim 1 , wherein the base polymer is selected from an acrylamide-based polymer and a polyacrylamide-based polymer.
6 . The fracturing fluid system of claim 1 , wherein the fracturing fluid system is thermally stable up to a temperature of 450° F.
7 . The fracturing fluid system of claim 1 , further comprising a proppant selected from the group consisting of sand, clay, bauxite, alumina and aluminosilicates and combinations thereof.
8 . The fracturing fluid system of claim 1 , further comprising a pH control agent selected from the group consisting of potassium hydroxide, sodium hydroxide, acetic acid, potassium carbonate, sodium carbonate, potassium bicarbonate, sodium bicarbonate, hydrochloric acid and combinations thereof.
9 . The fracturing fluid system of claim 1 , further comprising an antioxidant selected from the group consisting of phenols, polyphenols, di-tertbutyl alkyl phenols, hydroquinone, apigenin, resveratrol, ascorbic acid and tocopherol, sodium thiosulfate, sodium thiosulfite, isopropanol, methanol, ethylene glycol, thiourea and combinations thereof.
10 . The fracturing fluid system of claim 1 , further comprising a clay stabilizer selected from the group consisting of sodium chloride, potassium chloride, ammonia chloride, tetramethylammonium chloride (TMAC), other quaternary molecules, and combinations thereof.
11 . The fracturing fluid system of claim 1 , wherein the fluid composition reduces a polymer loading required to stimulate the subterranean reservoir formation in a hydraulic fracturing process by at least 25%.
12 . The fracturing fluid system of claim 1 , wherein the fluid composition reduces a polymer loading required to stimulate the subterranean reservoir formation in a hydraulic fracturing process by at least 50%.