HYDRAULIC FRACTURING IN HYDROCARBON RESERVOIRS
A subterranean zone can be treated by introducing an acid-generating material and a proppant to the subterranean zone. Fractures are created in the subterranean zone using the acid-generating material. The proppant is positioned within the created fractures to keep the fractures open.
1 . A method for treating a subterranean zone, the method comprising:
introducing an acid-generating material and a proppant to the subterranean zone;
creating fractures in the subterranean zone using the acid-generating material; and
positioning the proppant within the created fractures to keep the fractures open.
2 . The method of claim 1 , wherein introducing the acid-generating material and the proppant to the subterranean zone comprises:
mixing the acid-generating material and the proppant to form a mixture; and
introducing the mixture to the subterranean zone.
3 . The method of claim 2 , wherein the mixture comprises a plurality of layers, each of the layers comprising the acid-generating material and the proppant.
4 . The method of claim 2 , wherein the subterranean zone comprises carbonate mineral.
5 . The method of claim 4 , wherein creating the fractures in the subterranean zone using the acid-generating material comprises:
generating an acid in the subterranean zone with the acid-generating material; and
reacting the carbonate mineral with the generated acid.
6 . The method of claim 5 , wherein the acid-generating material comprises a degradable ester.
7 . The method of claim 6 , wherein the degradable ester comprises polylactic acid, polyglycolic acid, or combinations thereof.
8 . The method of claim 5 , wherein the proppant has a maximum dimension less than or equal to 100 micrometers (μm).
9 . The method of claim 8 , wherein the proppant has a maximum dimension less than or equal to 1 μm.
10 . The method of claim 9 , wherein the proppant has a maximum dimension less than or equal to 100 nanometers (nm).
11 . The method of claim 1 , wherein introducing the acid-generating material and the proppant to the subterranean zone comprises:
coating the proppant with the acid-generating material to form coated proppant; and
introducing the coated proppant to the subterranean zone.