Donald John Weintritt
Engineering at Hbr Bnd Blvd, Lafayette, LA
License number
Louisiana PE.0016740
Issued Date
Sep 28, 1977
Expiration Date
Mar 31, 2015
Category
Civil Engineer
Address
Address
302A Harbor Bend Blvd, Lafayette, LA 70508
Professional information
Independent Chemicals Professional
Location:
Lafayette, Louisiana Area
Industry:
Chemicals
Method Of Making Graphite-Coated Particulate Materials
US Patent:
7666469, Feb 23, 2010
Filed:
Jun 20, 2008
Appl. No.:
12/143118
Inventors:
Donald J. Weintritt - Lafayette LA, US
Peter Zaleski - Poulsbo WA, US
Henry Francois - Oak Park IL, US
Frank A. Wawrzos - McHenry IL, US
Peter Zaleski - Poulsbo WA, US
Henry Francois - Oak Park IL, US
Frank A. Wawrzos - McHenry IL, US
Assignee:
Superior Graphite Co. - Chicago IL
International Classification:
B05D 7/00
US Classification:
427189, 427196, 427214, 427215, 427216, 427220, 427222
Abstract:
An coated particulate is provided with a graphite-impregnated resin coating. The oil field particulates may comprise any of gravel-pack sand, granular betonite, ground Gilsonite, calcium carbonate, glass beads, rock wool, shredded paper, metal spheres, ceramic beads, nut hulls, ground rubber, plastic beads, muscovite mica, calcined petroleum coke, and perlite. The resin may comprise as a binder one or more of a natural, synthetic, water-soluble, and organic resins. More specifically, the resins may comprise an organic film-forming resin such as an alkyd, polyurethane and epoxy. Alternatively, the resin may comprise a film-forming water-soluble polymer, such as a starch, carboxymethyl cellulose, hydroxyethyl cellulose, and xanthan gum. In a further alternative, the resin may comprise a resin-dispersed emulsion, such as a latex or acrylic.
Graphite-Coated Particulate Materials
US Patent:
7402338, Jul 22, 2008
Filed:
Feb 24, 2006
Appl. No.:
11/361766
Inventors:
Donald J. Weintritt - Lafayette LA, US
Peter Zaleski - Poulsbo WA, US
Henry Francois - Oak Park IL, US
Frank A. Wawrzos - McHenry IL, US
Peter Zaleski - Poulsbo WA, US
Henry Francois - Oak Park IL, US
Frank A. Wawrzos - McHenry IL, US
Assignee:
Superior Graphite Co. - Chicago IL
International Classification:
B32B 5/16
US Classification:
428403, 428407
Abstract:
An coated particulate is provided with a graphite-impregnated resin coating. The oil field particulates may comprise any of gravel-pack sand, granular betonite, ground Gilsonite, calcium carbonate, glass beads, rock wool, shredded paper, metal spheres, ceramic beads, nut hulls, ground rubber, plastic beads, muscovite mica, calcined petroleum coke, and perlite. The resin may comprise as a binder one or more of a natural, synthetic, water-soluble, and organic resins. More specifically, the resins may comprise an organic film-forming resin such as an alkyd, polyurethane and epoxy. Alternatively, the resin may comprise a film-forming water-soluble polymer, such as a starch, carboxymethyl cellulose, hydroxyethyl cellulose, and xanthan gum. In a further alternative, the resin may comprise a resin-dispersed emulsion, such as a latex or acrylic.
Drilling Fluid Loss Prevention And Lubrication Additive
US Patent:
5826669, Oct 27, 1998
Filed:
Dec 10, 1996
Appl. No.:
8/763201
Inventors:
Peter L. Zaleski - Willow Springs IL
David J. Derwin - Des Plaines IL
Donald J. Weintritt - Lafayette LA
George W. Russell - Tinley Park IL
David J. Derwin - Des Plaines IL
Donald J. Weintritt - Lafayette LA
George W. Russell - Tinley Park IL
Assignee:
Superior Graphite Co. - Chicago IL
International Classification:
C09K 702, C09K 706, E21B 33138
US Classification:
175 72
Abstract:
A method of preventing or controlling the loss of well drilling fluid into the pores and fractures of subterranean rock formations by the addition of resilient graphitic carbon particles to the drilling fluid in sufficient amounts to plug the pores and fractures. The graphitic carbon material reduces loss of circulation, lowers torque and drag, prevents casing wear while drilling, and provides a new method for the controlled release of graphite at extreme pressure. The material is non-toxic and imparts the well-known lubricating properties of graphite without contributing to surface sheen development under US EPA offshore cuttings discharge rules.
Drilling Fluid Lubricant And Method Of Use
US Patent:
2009007, Mar 19, 2009
Filed:
Dec 17, 2007
Appl. No.:
11/957634
Inventors:
Frank A. Wawrzos - McHenry IL, US
Donald J. Weintritt - Lafayette LA, US
Donald J. Weintritt - Lafayette LA, US
International Classification:
C09K 8/60
US Classification:
507200
Abstract:
A method for increasing drilling rates by reducing torque and drag in hostile environments such as high pressure, high temperature, and horizontal wells is provided by adding chemically and thermally inert spherical carbon beads to the drilling fluid.