Proppant having amphiphobic coatings and methods for making and using same
Proppant having amphiphobic coatings and methods for making and using same are disclosed. The proppant having amphiphobic coatings can include a proppant particle having a size from about 8 mesh to about 140 mesh, density of less than about 4.0 g/cm 3 , and a coating containing an amphiphobic material formed on an outer surface of the proppant particle.
1. An amphiphobic proppant particle, comprising:
a proppant particle having an internal interconnected porosity from about 5% to about 75%, a size from about 8 mesh to about 140 mesh and a density of less than 4.0 g/cm 3 ; and
a degradable coating comprising an amphiphobic material infused into at least a portion of the internal interconnected porosity and formed on an outer surface of the proppant particle,
wherein the degradable coating comprises a degradable polymer blended with the amphiphobic material.
2. The amphiphobic proppant particle of claim 1 , wherein the amphiphobic material is selected from the group consisting of one or more fluorinated poly(acrylates), one or more fluorinated silanes, and one or more fluorinated siloxanes and any combination thereof.
3. The amphiphobic proppant particle of claim 1 , further comprising a hydrophobicity value as measured by a water droplet contact angle of at least about 90° and an oleophobicity value as measured by an oil droplet contact angle of at least about 90°.
4. The amphiphobic proppant particle of claim 1 , wherein the degradable coating comprises a polyvinyl alcohol.
5. The amphiphobic proppant particle of claim 1 , wherein the proppant particle comprises 30 wt % to about 99.9 wt % alumina on a calcined basis and wherein the interconnected porosity is from about 20% to about 75%.
6. The amphiphobic proppant particle of claim 5 , wherein when the degradable coating degrades, the amphophobic material infused into the internal interconnected porosity is released onto an outer surface of the amphiphobic proppant particle.
7. The amphiphobic proppant particle of claim 1 , wherein the amphiphobic material is a fluorinated poly(acrylate).
8. The amphiphobic proppant particle of claim 7 , wherein the fluorinated poly(acrylate) comprises monomers selected from the group consisting of fluorohexyl acrylate, fluoroaryl acrylate, 2-(perfluorooctyl)ethyl acrylate, heptafluorobutyl acrylate, 1H,1H,9H-hexadecafluorononyl acrylate, 2,2,3,4,4,4-hexafluorobutyl acrylate, hexafluoroisopropyl acrylate, 1H,1H,5H-octafluoropentyl acrylate, pentafluorobenzyl acrylate, pentafluorophenyl acrylate, perfluorocyclohexyl methyl acrylate, perfluoroheptoxypoly(propyloxy) acrylate, perfluorooctyl acrylate, 1H,1H-perfluorooctyl acrylate, 2,2,3,3-tetrafluoropropyl acrylate, 2,2,2-trifluoroethyl acrylate, 3-(trifluoromethyl)benzyl acrylate, 2-(N-butylperfluorooctanesulfamido) ethyl acrylate, 1H,1H,7H-dodecafluoroheptyl acrylate, 1H,1H,11H-eicosafluoroundecyl acrylate, trihydroperfluoroundecyl acrylate, trihydroperfluoroheptyl acrylate, and 2-(N-ethylperfluorooctane sulfamido) ethyl acrylate.
9. The amphiphobic proppant particle of claim 7 , wherein the fluorinated poly(acrylate) comprises a combination of repeating units derived from the monomer C 6 F 13 CH═CHROCOCH═CH 2 , wherein R is selected from the group consisting of CH 2 , CH 2 OCH 2 CH 2 , and (OCH 2 CH 2 CH 2 ) 1.6 .
10. An amphiphobic proppant particle, comprising:
a proppant particle having an internal interconnected porosity from about 5% to about 75%, a size from about 8 mesh to about 140 mesh and a density of less than 4.0 g/cm 3 ; and
an amphiphobic material infused into at least a portion of the internal interconnected porosity and formed on at least a portion of an interior pore wall of the proppant particle,
wherein the amphiphobic material is blended with a degradable polymer.
11. The amphiphobic proppant particle of claim 10 , wherein the interior pore wall has a hydrophobicity value as measured by a water droplet contact angle of at least about 90° and an oleophobicity value as measured by an oil droplet contact angle of at least about 90°.
12. The amphiphobic proppant particle of claim 10 , wherein the amphiphobic material is a fluorinated poly(acrylate).
13. The amphiphobic proppant particle of claim 12 , wherein the fluorinated poly(acrylate) comprises monomers selected from the group consisting of fluorohexyl acrylate, fluoroaryl acrylate, 2-(perfluorooctyl)ethyl acrylate, heptafluorobutyl acrylate, 1H,1H,9H-hexadecafluorononyl acrylate, 2,2,3,4,4,4-hexafluorobutyl acrylate, hexafluoroisopropyl acrylate, 1H,1H,5H-octafluoropentyl acrylate, pentafluorobenzyl acrylate, pentafluorophenyl acrylate, perfluorocyclohexyl methyl acrylate, perfluoroheptoxypoly(propyloxy) acrylate, perfluorooctyl acrylate, 1H,1H-perfluorooctyl acrylate, 2,2,3,3-tetrafluoropropyl acrylate, 2,2,2-trifluoroethyl acrylate, 3-(trifluoromethyl)benzyl acrylate, 2-(N-butylperfluorooctanesulfamido) ethyl acrylate, 1H,1H,7H-dodecafluoroheptyl acrylate, 1H,1H,11H-eicosafluoroundecyl acrylate, trihydroperfluoroundecyl acrylate, trihydroperfluoroheptyl acrylate, and 2-(N-ethylperfluorooctane sulfamido) ethyl acrylate.
14. The amphiphobic proppant particle of claim 12 , wherein the fluorinated poly(acrylate) comprises a combination of repeating units derived from the monomer C 6 F 13 CH═CHROCOCH═CH 2 , wherein R is selected from the group consisting of CH 2 , CH 2 OCH 2 CH 2 , and (OCH 2 CH 2 CH 2 ) 1.6 .