6 patents
Utility
Ultra-white Silica-based Filler
29 Jun 23
An ultra-white granular silica-based filler comprises at least 99.5 wt. % silica, wherein the crystal structure of the silica is such that the silica-based filler comprises 40 to 80 wt. % cristobalite, 1 to 25 wt. % tridymite, 2-60 wt. % quartz and <5 wt. % amorphous silica, wherein the temperature of the ultra-white granular silica-based filler is no higher than 50° C. and further wherein the ultra-white granular silica-based filler exhibits an L* value in the CIELAB color space of 95-98.
Gregory Kenneth Bedford, Claud Eric Westbrook, III
Filed: 10 Mar 23
Utility
Ultra-white silica-based filler
18 Apr 23
An ultra-white granular silica-based filler comprises at least 99.5 wt. % silica, wherein the crystal structure of the silica is such that the silica-based filler comprises 40 to 80 wt. % cristobalite, 1 to 25 wt. % tridymite, 2-60 wt. % quartz and <5 wt. % amorphous silica, wherein the temperature of the ultra-white granular silica-based filler is no higher than 50° C. and further wherein the ultra-white granular silica-based filler exhibits an L* value in the CIELAB color space of 95-98.
Gregory Kenneth Bedford, Claud Eric Westbrook, III
Filed: 28 Aug 20
Utility
Flowback resistant proppants
1 Jun 21
A resin coated proppant capable of self-bonding at temperatures as low as 70° F. (˜21° C.) is made from an aqueous dispersion of a self-bonding vinyl aromatic/acrylic ester addition copolymer.
Litao Bai, Kanth Josyula, Vinay Mehta
Filed: 13 Mar 18
Utility
Ultra-white Silica-based Filler
4 Mar 21
An ultra-white granular silica-based filler comprises at least 99.5 wt. % silica, wherein the crystal structure of the silica is such that the silica-based filler comprises 40 to 80 wt. % cristobalite, 1 to 25 wt. % tridymite, 2-60 wt. % quartz and <5 wt. % amorphous silica, wherein the temperature of the ultra-white granular silica-based filler is no higher than 50° C. and further wherein the ultra-white granular silica-based filler exhibits an L* value in the CIELAB color space of 95-98.
Gregory Kenneth Bedford, Claud Eric Westbrook, III
Filed: 28 Aug 20
Utility
Crush resistant buoyant ball sealers
19 Oct 20
A perforation ball sealer for temporarily plugging a perforation in an oil or gas well comprises a polymer foam core and a shell surrounding the core formed from a solid or essentially solid second polymer.
Huaxiang Yang, An Thien Nguyen, Vinay Mehta
Filed: 25 Oct 18
Utility
Dust free silica particles
10 Aug 20
A long term dust free mass of natural silica particles is produced by covering 10-60 percent of the total surface area of the particles with a thin film of white mineral oil with a low viscosity of less than 200 Saybolt SUS at 100° F. and preferably in the range of 60-100 Saybolt SUS at 100° F.
Jeffery Hicks, Claud E. Westbrook
Filed: 27 Feb 18
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