Patents by Inventor Dorothy P. Enright
Dorothy P. Enright has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6283228Abstract: A method for protecting integrity of a core sample during transport from a subterranean formation to the surface comprising: cutting a core sample from the subterranean formation using a drilling fluid; encapsulating the core sample with an encapsulating material that is separate from the drilling fluid and comprises a property which renders the encapsulating material capable of protecting the chemical integrity of the core sample during transport from the subterranean formation to the surface, wherein the property is other than a property selected from the group consisting of a viscosity which increases in response to a decrease in temperature and an ability to solidify in response to a decrease in temperature; and, transporting the encapsulated core sample from the subterranean formation to the surface.Type: GrantFiled: December 15, 2000Date of Patent: September 4, 2001Assignee: Baker Hughes IncorporatedInventors: Pierre Emmanuel Collee, Steven R. Radford, William A. Mallow, Dorothy P. Enright
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Publication number: 20010000393Abstract: The present invention provides a method for protecting integrity of a core sample during transport from a subterranean formation to the surface comprising: cutting a core sample from the subterranean formation using a drilling fluid; encapsulating the core sample with an encapsulating material that is separate from said drilling fluid and comprises a property which renders said encapsulating material capable of protecting said chemical integrity of said core sample during transport from said subterranean formation to said surface, wherein said property is other than a property selected from the group consisting of a viscosity which increases in response to a decrease in temperature and an ability to solidify in response to a decrease in temperature; and, transporting said encapsulated core sample from said subterranean formation to said surface.Type: ApplicationFiled: December 15, 2000Publication date: April 26, 2001Inventors: Pierre Emmanuel Collee, Steven R. Radford, William A. Mallow, Dorothy P. Enright
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Patent number: 5881825Abstract: The present invention provides a method for protecting the integrity of a core sample during transport from a subterranean formation to the surface comprising: cutting a core sample from the subterranean formation using a drilling fluid; encapsulating the core sample with an encapsulating material separate from the drilling fluid, the encapsulating material being capable in the absence of a chemical reaction of protecting core sample integrity during transport from said subterranean formation to said surface; and, transporting the encapsulated core sample from the subterranean formation to the surface.Type: GrantFiled: January 8, 1997Date of Patent: March 16, 1999Assignee: Baker Hughes IncorporatedInventors: Pierre E. Collee, Dorothy P. Enright
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Patent number: 5560438Abstract: The present invention provides a method for maximizing the chemical integrity and, if desired, maintaining the mechanical integrity of a core sample during transport from a subterranean formation to the surface. The method involves cutting and encapsulating the core sample as it enters the core barrel with an encapsulating material that either (a) inherently is capable of protecting the chemical integrity of the core sample, or (b) is capable of increasing in viscosity and/or solidifying in response to natural decreases in temperature to maintain the mechanical integrity and maximize the chemical integrity of the core sample during transport.Type: GrantFiled: March 16, 1994Date of Patent: October 1, 1996Assignee: Baker Hughes IncorporatedInventors: Pierre E. Collee, Dorothy P. Enright
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Patent number: 5546798Abstract: The present invention provides a method and composition for encapsulating a core sample as it enters a core barrel with a water-based encapsulating material that preferably comprises an expandable lattice type clay. The water-base causes the expandable lattice type clay to swell, forming a plastic mass which can be pumped into a core barrel to encapsulate the core sample and maintain the chemical and mechanical integrity of the sample during transport to the surface. Filtration control agents preferably are added to the encapsulating material to prevent water from penetrating into or interacting with the core. These control agents prevent the loss and/or invasion of water or other gaseous or fluid components. The control agents are (a) a water soluble thickening agent, and, (b) a particulate sealing agent capable of (i) sealing the pores of the core sample, or (ii) bridging the pores of the core sample and permitting the thickening agent to adsorb to the bridge to seal the pores.Type: GrantFiled: May 12, 1995Date of Patent: August 20, 1996Assignee: Baker Hughes IncorporatedInventors: Pierre E. Collee, Dorothy P. Enright
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Patent number: 5099930Abstract: A method is provided for the prevention of balling of formation cuttings upon the surface of drilling equipment and for lubrication of said equipment used in conjunction with subterranean well operations. An aqueous system is prepared to which is added a composition of a water insoluble polyglycol having a molecular weight of from between about 1,200 and about 10,000, an emulsifying surfactant having a hydrophilic/hydrophobic balance of about 4 or more, and a hydrotrope. An additive for use in the method also is disclosed.Type: GrantFiled: January 25, 1991Date of Patent: March 31, 1992Assignee: Baker Hughes IncorporatedInventors: Dorothy P. Enright, William M. Dye, F. Martin Smith, Alphonse C. Perricone
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Patent number: 5007489Abstract: A method is provided for the prevention of balling of formation cuttings upon the surface of drilling equipment and for lubrication of said equipment used in conjunction with subterranean well operations. An aqueous system is prepared to which is added a composition of a water insoluble polyglycol having a molecular weight of from between about 1,200 and about 10,000, an emulsifying surfactant having a hydrophilic/hydrophobic balance of about 4 or more, and a hydrotrope. An additive for use in the method also is disclosed.Type: GrantFiled: April 27, 1990Date of Patent: April 16, 1991Assignee: Baker Hughes IncorporatedInventors: Dorothy P. Enright, William M. Dye, F. Martin Smith, Alphonse C. Perricone
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Patent number: 4963273Abstract: The present invention provides a modified liquid phase drilling fluid having desirable properties of shale swelling inhibition, lubrication, and high temperature performance. The fluid does not rely on the incorporation of inorganic salts or high molecular weight water soluble polymers for control of shale swelling or shale disintegration and exhibits performance characteristics, approaching those of oil base drilling fluids, without the objectionable properties of hydrocarbon oils or its potential hazardous impact on the environment.Type: GrantFiled: September 16, 1988Date of Patent: October 16, 1990Assignee: Baker Hughes IncorporatedInventors: Alphonse C. Perricone, Dennis K. Clapper, Dorothy P. Enright
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Patent number: 4941981Abstract: The present invention provides a modified liquid phase drilling fluid having desirable properties of shale swelling inhibition, lubrication, and high temperature performance. The fluid does not rely on the incorporation of inorganic salts or high molecular weight water soluble polymers for control of shale swelling or shale disintegration and exhibits performance characteristics, approaching those of oil base drilling fluids, without the objectionable properties of hydrocarbon oils or its potential hazardous impact on the environment.Type: GrantFiled: September 16, 1988Date of Patent: July 17, 1990Assignee: Baker Hughes IncorporatedInventors: Alphonse C. Perricone, Dennis K. Clapper, Dorothy P. Enright
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Patent number: 4830765Abstract: The present invention provides a modified liquid phase drilling fluid having desirable properties of shale swelling inhibition, lubrication, and high temperature performance. The fluid is comprised of the following: (1) a liquid phase containing: (a) a water phase comprising fresh water, seawater, brine, simulated brine, or mixtures thereof; and (b) a water-soluble component selected from the class consisting of polyhydric alcohols, glycol, glycol ethers, polypropylene glycols, polyethylene glycols, ethylene oxide-propylene oxide copolymers ("EO-PO"), alcohol-initiated EO-PO copolymers and/or mixtures thereof, the ratio of said water-soluble component in the total liquid phase being from about 5% to about 50% by volume; (2) a viscosifier for suspension of solids in said liquid phase; and (3) a filtration control agent.Type: GrantFiled: December 4, 1987Date of Patent: May 16, 1989Assignee: Baker Hughes IncorporatedInventors: Alphonse C. Perricone, Dennis K. Clapper, Dorothy P. Enright
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Patent number: 4309329Abstract: The invention relates to an aqueous solution of a filtration control agent for utilization in said aqueous drilling fluid, useful in a method of forming a filter cake on the wall of a well for the reduction of filtrate from said drilling fluid, which is effective at high temperatures and pressures, the terpolymer consisting essentially of: (1) an alkali metal acrylate units; (2) hydroxyalkyl acrylate units; and (3) acrylamide.Type: GrantFiled: March 18, 1980Date of Patent: January 5, 1982Assignee: Milchem IncorporatedInventors: James M. Lucas, Alphonse C. Perricone, Dorothy P. Enright
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Patent number: 4293427Abstract: The invention relates to an aqueous drilling fluid composition, a filtration control agent for utilization in said aqueous drilling fluid, and a method of forming a filter cake on the wall of a well for the reduction of filtrate from said drilling fluid, by utilization of a copolymer of: (1) a (meth) acrylamido alkyl sulfonic acid or alkali metal salt thereof; and (2) a (meth) acrylamide or N-alkyl (meth) acrylamide. The copolymer may be cross-linked with a quaternary ammonium salt cross-linking agent.Type: GrantFiled: March 18, 1980Date of Patent: October 6, 1981Assignee: Milchem IncorporatedInventors: James M. Lucas, Dorothy P. Enright, Alphonse C. Perricone
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Patent number: 4288582Abstract: The invention relates to an aqueous drilling fluid composition, a filtration control agent for utilization in said aqueous drilling fluid, and a method of forming a filter cake on the wall of a well for the reduction of filtrate from said drilling fluid, which are effective at high temperatures and pressures, by utilization of a terpolymer of: (1) a monovalent alkali metal salt of acrylic acid; (2) an hydroxy alkyl acrylate; and (3) acrylamide.Type: GrantFiled: October 29, 1979Date of Patent: September 8, 1981Assignee: Milchem IncorporatedInventors: James M. Lucas, Alphonse C. Perricone, Dorothy P. Enright
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Patent number: 4268400Abstract: The invention relates to an aqueous drilling fluid composition, a filtration control agent for utilization in said aqueous drilling fluid, and a method of forming a filter cake on the wall of a well for the reduction of filtrate from said drilling fluid, which are effective at high temperatures and pressures, by utilization of a terpolymer of: (1) a monovalent alkali metal salt of acrylic acid; (2) an hydroxy alkyl acrylate; and (3) acrylamide.Type: GrantFiled: March 18, 1980Date of Patent: May 19, 1981Assignee: Milchem IncorporatedInventors: James M. Lucas, Alphonse C. Perricone, Dorothy P. Enright