Abstract: Lubricants and drilling fluid systems comprising lubricants which form a coherent lubricating film on metal equipment, thereby prolonging equipment life even under a wide variety of conditions, including high temperature and/or high pressure conditions.
Type:
Grant
Filed:
March 3, 2004
Date of Patent:
September 25, 2012
Assignee:
Baker Hughes Incorporated
Inventors:
Michael J. Otto, James E. Norfleet, Dennis K. Clapper, Kalyan C. Singamshetty
Abstract: A thermal insulation composition comprising: aqueous base; one or more primary viscosifier comprising a quantity of clay; and, an amount of one or more polymeric viscosifier comprising sulfonate moiety.
Type:
Grant
Filed:
September 12, 2006
Date of Patent:
October 4, 2011
Assignee:
Baker Hughes Incorporated
Inventors:
Mohammad Tej, David B. Young, John B. Trenery, Michael A. Jarrett, Floyd Harvey, Marvin L. Pless
Abstract: A process for minimizing breaking of an emulsion type drilling fluid system comprising one or more fibrous lost circulation material, the process comprising: determining the water retention value of one or more candidate fibrous lost circulation materials; and, formulating the emulsion type drilling fluid system to comprise fibrous lost circulation material consisting of one or more of the candidate fibrous lost circulation materials having a water retention value of about 1 or less.
Abstract: Methods for minimizing the amount of graphite particles used during drilling operations, the methods comprise performing drilling operations using a drilling fluid system having effective rheological and fluid loss control properties, the drilling fluid system comprising a mixture of graphite particles having an effective particle size distribution.
Type:
Grant
Filed:
March 31, 2009
Date of Patent:
July 12, 2011
Assignee:
Baker Hughes Incorporated
Inventors:
William S. Halliday, David W. Schwertner, S. Dwight Strickland
Abstract: A process for removing contaminants and breaking emulsions in a feedstream comprising a crude source composition comprising unconventional or opportunity crude oil, the process comprising: providing the feedstream comprising the crude source composition comprising unconventional or opportunity crude oil, the feedstream comprising an emulsion comprising one or more contaminants, a salt content, and a water content; and, contacting the feedstream directly with one or more mesopore structured materials and one or more demulsifiers under conditions effective to separate a majority of the water content, the salt content, and the one or more contaminants from the feedstream, thereby breaking the emulsion and producing a purified hydrocarbon phase.
Abstract: Latex additives, methods for treating latex additives, drilling fluid systems, and lost circulation pills comprising the latex additives, the latex additive comprising latex particles having a particle size distribution before aging comprising an average particle diameter of about 1 micron or less; and a quantity of one or more water soluble oxygenated organic molecules comprising two or more oxygen atoms effective to maintain substantially the same particle size distribution before and after freezing the latex additive.
Abstract: A method and drilling fluid system for providing filtration control during drilling operations using a drilling fluid system comprising water soluble polymer comprising acrylamide monomer, the method comprising: providing a drilling fluid system having effective rheological properties, the drilling fluid system comprising aqueous base consisting essentially of freshwater, a quantity of from about 21 to 58 kg/m3 (7.5 to about 20 pounds per barrel) plugging agent, and an amount of bridging agent comprising water soluble polymer comprising acrylamide monomer which exhibits a 5% by weight Brookfield viscosity in freshwater of from about 50 cP to about 100 cP, and; contacting a subterranean formation with the drilling fluid system and maintaining effective filtration control at concentrations of about 10,000 ppm or less monovalent salt, as demonstrated in the laboratory by producing a HPHT filtrate of 25 cm3/min or less after 30 minutes at about 149° C. (300° F.
Abstract: A method for reducing circulation loss during drilling operations, the method comprising: performing drilling operations using a water-based drilling fluid system comprising a first amount of water insoluble particulate; providing the drilling fluid system with a second amount of alkali metal silicate, the first amount of water insoluble particulate and the second amount of alkali metal silicate comprising a circulation loss combination; and reducing the pH of the water-based drilling fluid system using a quantity of water soluble activating agent effective to form an effective circulation loss structure after a period of time.
Abstract: Cementitious compositions comprising pozzolonic materials, alkaline earth metals, and a catalyst to catalyze the reaction between the pozzolonic materials and the alkaline earth metals.
Abstract: A drilling fluid system comprising a brine and a quantity of cationic copolymers comprising a ratio of acrylamide monomers to cationic derivatives of acrylamide monomers, wherein the quantity and the ratio are effective to maintain effective rheology and fluid loss control in said drilling fluid system at temperatures of at least about 250° C. for at least about 16 hours.
Type:
Grant
Filed:
May 1, 2002
Date of Patent:
October 21, 2008
Assignee:
Baker Hughes Incorporated
Inventors:
Billy G. Chesser, Charles Perricone, George W. Bettge
Abstract: A method for increasing removal of drag reducer additive (DRA) from liquid hydrocarbon fuel. The method comprises producing contaminated liquid hydrocarbon fuel comprising a concentration of removable DRA comprising a quantity of one or more polar groups, and contacting the contaminated liquid hydrocarbon fuel with an amount of one or more removal agents under removal conditions effective to produce a reduced concentration of the removable DRA.
Abstract: Tubular structures having aspect ratios of at least about 3 and comprising interior surfaces comprising substantially uniform coatings generated from a gaseous precursor material.
Type:
Grant
Filed:
October 24, 2003
Date of Patent:
April 1, 2008
Assignee:
Southwest Research Institute
Inventors:
Ronghua Wei, Chistopher Rincon, James Arps
Abstract: Fuel cell electrodes comprising a minimal load of catalyst having maximum catalytic activity and a method of forming such fuel cell electrodes. The preferred method comprises vaporizing a catalyst, preferably platinum, in a vacuum to form a catalyst vapor. A catalytically effective amount of the catalyst vapor is deposited onto a carbon catalyst support on the fuel cell electrode. The electrode preferably is carbon cloth. The method reduces the amount of catalyst needed for a high performance fuel cell electrode to about 0.3 mg/cm2 or less, preferably to about 0.1 mg/cm2. The electrocatalytic layer formed comprises unique, rod-like structures.
Abstract: Blends of synthetic olefins for use as the continuous phase of fluids selected from the group consisting of drilling, drill-in, and completion fluids. The blends meet EPA discharge requirements while also permitting investigators to clearly discern the presence and quantity of biological markers in reservoir fluid samples—particularly pristane and phytane.
Type:
Grant
Filed:
November 13, 2002
Date of Patent:
November 20, 2007
Assignee:
Baker Hughes Incorporated
Inventors:
Timothy Martin Beyer, Steven Kyle Watson
Abstract: The present application provides a method for removing drag reducer additive (“DRA”) from liquid hydrocarbon fuel. The method comprises: providing contaminated liquid hydrocarbon fuel comprising an initial concentration of DRA; contacting the contaminated liquid hydrocarbon fuel with a quantity of fresh attapulgus clay under conditions effective to produce decontaminated liquid hydrocarbon fuel comprising a reduced concentration of the DRA; said fresh attapulgus clay being effective to remove about 10% or more of a target DRA when 1 g of the fresh attapulgus clay is added in increments of from about 0.02 gram to about 0.1 gram, with agitation, to 100 ml. of contaminated liquid hydrocarbon fuel comprising from about 8 to about 9 ppm of the unsheared target DRA.
Abstract: A circulation loss combination for water-based drilling fluid system(s) comprising: a first amount of alkali metal silicate; a second amount of water insoluble particulate; and, a quantity of water soluble activating agent effective to reduce the pH of the water-based drilling fluid system to a value sufficiently low to form an effective circulation loss structure at a desired period of time after addition to the water-based drilling fluid system.