Enhanced proppant transport for hydraulic fracturing
The present disclosure relates to compositions and methods for recovery of hydrocarbons from subterranean formations. The compositions may be dry blends of synthetic and naturally derived polymers. The blend compositions may also be produced as high activity solvent-based fluidized polymer suspensions. Either in dry or liquid forms, the blend compositions provide higher proppant carrying capacity in comparison to conventional solutions, as well as improved breakability and crosslinking capacity.
1. A composition comprising:
mineral oil,
from 10-90% by weight of polyacrylamide; and
from 10-90% by weight of guar.
2. The composition of claim 1 , wherein the polyacrylamide is a dry powder.
3. The composition of claim 2 , wherein the dry powder has a particle size below about 500 μm.
4. The composition of claim 1 , wherein the guar has a particle size below about 500 μm.
5. The composition of claim 1 , wherein the composition comprises about 25% to about 75% by weight of the polyacrylamide.
6. The composition of claim 1 , wherein the composition comprises about 40% to about 70% by weight of the polyacrylamide.
7. The composition of claim 1 , wherein the guar comprises a minimum solution viscosity of about 3,500 cP at 1%.
8. The composition of claim 1 , wherein the polyacrylamide has a weight average molecular weight of at least about 2,000,000.
9. The composition of claim 1 , further comprising a liquid carrier.
10. The composition of claim 9 , wherein the liquid carrier comprises a glycol.
11. The composition of claim 1 , further comprising a friction reducer.
12. The composition of claim 11 , wherein the friction reducer is a water-soluble polymer.
13. The composition of claim 12 , wherein the water-soluble polymer is selected from the group consisting of polyacrylamide, polyethylene oxide and any combination thereof.
14. The composition of claim 9 , further comprising a cross-linking agent.
15. The composition of claim 9 , further comprising an organophilic clay.
16. The composition of claim 9 , further comprising a surfactant.