Compositions and methods for improving proppant conductivity
View Patent ↗Compositions and methods for improving proppant conductivity are disclosed herein. The compositions can include a proppant composition for use in hydraulic fracturing, the composition containing a plurality of particulates. At least one particulate of the plurality of particulates can contain at least one nutrient. The at least one nutrient can separate from the at least one particulate located inside a fracture of a subterranean formation after a period of time.
1. A proppant composition for use in hydraulic fracturing, the composition comprising:
a plurality of particulates; and
at least one particulate of the plurality of particulates containing at least one nutrient, wherein the at least one nutrient is configured to separate from the at least one particulate when located inside a fracture of a subterranean formation after a period of time, wherein the nutrient supports propagation and/or colonization of a native microorganism inside the fracture of the subterranean formation.
2. The composition of claim 1 , wherein the at least one particulate has a long term permeability measured in accordance with ISO 13503-5 at 7,500 psi of at least about 10 Darcies.
3. The composition of claim 1 , wherein the plurality of particulates comprises non-porous particulates and porous particulates.
4. The composition of claim 3 , wherein the plurality of particulates has a permeability that is at least equal to the permeability of the non-porous particulates.
5. The composition of claim 4 , wherein the plurality of particulates has a conductivity that is at least about 70% of the conductivity of the non-porous particulates.
6. The composition of claim 3 , wherein the porous particulates contain the nutrient.
7. The composition of claim 3 , wherein the non-porous particulates contain the nutrient.
8. The composition of claim 3 , wherein the non-porous particulate is selected from the group consisting of light weight ceramic non-porous proppant, intermediate density ceramic non-porous proppant and high density porous ceramic proppant and the porous particulate is selected from the group consisting of light weight porous ceramic proppant, intermediate density porous ceramic proppant and high density porous ceramic proppant.
9. The composition of claim 3 , wherein the proppant composition further comprises a degradable coating selected from the group consisting of polylactic acid, water-soluble polymers, and cross-linkable water-soluble polymers and any combination thereof or a non-degradable coating selected from the group consisting of phenol formaldehyde, polyurethane, cellulose ester, polyamides, vinyl esters, and epoxies, and any combination thereof, and wherein the degradable coating degrades inside the fracture.
10. The composition of claim 1 , wherein the nutrient is selected from the group consisting of proteins, carbohydrates, lipids, monocalcium phosphate, dicalcium phosphate, phosphoric acid, ammonium chloride, potassium nitrate, ammonium nitrate, urea, and nitratine and any combination thereof.
11. The composition of claim 1 , wherein the native microorganism alters the wettability of the proppant composition in a hydraulic fracture environment.
12. The composition of claim 1 , wherein the native microorganism removes gel from the proppant composition and/or the fracture of the subterranean formation.