Patents Assigned to DURHAM UNIVERSITY
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Patent number: 10640696Abstract: Oil-based drilling fluid compositions comprising an oil phase comprising a base oil, an aqueous phase comprising water, at least one emulsifier, and one or more additives. The at least one emulsifier comprises an amino amide comprising the formula R—CO—NH—R?—NH—R?—NH2, where R is a fatty acid alkyl and R? and R? are alkyl groups. The one or more additives are chosen from a wetting agent, a rheology modifier, a fluid-loss control additive, and a weighting additive. Methods of making the oil-based drilling fluid compositions and methods of drilling a subterranean well utilizing the oil-based drilling fluid compositions are also provided.Type: GrantFiled: August 6, 2018Date of Patent: May 5, 2020Assignees: Saudi Arabian Oil Company, Durham University, M-I Drilling Fluids UK LimitedInventors: Musarrat Halima Mohammed, Mona Al Batal, Hugh Christopher Greenwell, Andrew Whiting, John Adrian Hall, Gasan Selman Alabedi, Michael Hayward Hodder
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Publication number: 20190290785Abstract: Embodiments of the present disclosure pertain to methods of opening a lipid bilayer by associating the lipid bilayer with a molecule that includes a moving component capable of moving (e.g., rotating) in response to an external stimulus; and exposing the molecule to an external stimulus before, during or after associating the molecule with the lipid bilayer. The exposing causes the moving component of the molecule to move and thereby open the lipid bilayer (e.g., by pore formation). The external stimuli may include an energy source, such as ultraviolet light. The opened lipid bilayer may be a component of cell membranes in vitro or in vivo. The opening of the lipid bilayer may allow for the passage of various materials (e.g., active agents, such as peptide-based drugs) through the lipid bilayer and into cells. Additional embodiments of the present disclosure pertain to the aforementioned molecules for opening lipid bilayers.Type: ApplicationFiled: July 14, 2017Publication date: September 26, 2019Applicants: William Marsh Rice University, Durham UniversityInventors: James M. Tour, Robert Pal, Victor Garcia, Lizanne Nilewski
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Publication number: 20190137758Abstract: A pseudo light-field display uses a stereoscopic display viewed by a user, with a variable lens disposed between each eye and the display, and a half-silvered mirror disposed between each lens and the display. A focus measurement device operates through at least one half-silvered mirror with one of the variable lenses to detect focus of an eye, providing a focus output, and controlling both variable lenses. A gaze direction measurement device operates through both half-silvered mirrors to detect the gaze direction of each eye, and provides an output of the vergence or individual gaze directions of the eyes. The focus, vergence, and gaze directions are used to establish a visual focal plane, whereby objects on the display that are being gazed upon in the visual focal plane are in focus, with other objects appropriately blurred, thereby approximating a light-field display.Type: ApplicationFiled: November 2, 2018Publication date: May 9, 2019Applicants: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, DURHAM UNIVERSITY, INRIAInventors: Martin S. Banks, Steven A. Cholewiak, Pratul Srinivasan, Yi-Ren Ng, Gordon D. Love, Geroge Drettakis, Georgios-Alexan Koulieris
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Patent number: 10252245Abstract: Embodiments of the present disclosure are directed towards methods for preparing mixed-metal oxide particles by heating adamantane-intercalated layered double-hydroxide (LDH) particles at a reaction temperature of from 400° C. to 800° C. to form mixed-metal oxide particles. The adamantane-intercalated LDH particles have a general formula [M1-xAlx(OH)2](A)x.mH2O, where x is from 0.14 to 0.33, m is from 0.33 to 0.50, M is chosen from Mg, Ca, Co, Ni, Cu, or Zn, and A is adamantane carboxylate, and an aspect ratio greater than 100. The aspect ratio is defined by the width of an adamantane-intercalated LDH particle divided by the thickness of the adamantane-intercalated LDH particle. The mixed-metal oxide particles comprise a mixed-metal oxide phase containing M, Al or Fe, and carbon.Type: GrantFiled: March 8, 2017Date of Patent: April 9, 2019Assignees: Saudi Arabian Oil Company, Durham UniversityInventors: Manohara Gudiyor Veerabhadrappa, Hugh Christopher Greenwell, Gasan Selman Alabedi, John Adrian Hall, Andrew Whiting
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Publication number: 20190055453Abstract: The present application discloses drilling fluid compositions, methods for making drilling fluids, and methods for drilling subterranean wells utilizing the drilling fluids. According to one embodiment, a drilling fluid composition may include an oil phase, an aqueous phase, and a rheology modifier. The rheology modifier may include a layered double hydroxide, such as Mg/Al-Myristate layered double hydroxide.Type: ApplicationFiled: August 9, 2018Publication date: February 21, 2019Applicants: Saudi Arabian Oil Company, Durham University, M-I Drilling Fluids UK LtdInventors: Musarrat Halima Mohammed, Andrew Whiting, Manohara Gudiyor Veerabhadrappa, Hugh Christopher Greenwell, John Adrian Hall, Gasan Selman Alabedi, Michael Hayward Hodder
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Publication number: 20190055452Abstract: The present application discloses drilling fluid compositions, methods for making drilling fluids, and methods for drilling subterranean wells utilizing the drilling fluids. According to one embodiment, a drilling fluid composition may include an oil phase, an aqueous phase, an emulsifier, and a rheology modifier. The emulsifier may include an amino amide, and the rheology modifier may include a layered double hydroxide, such as Mg/Al-Myristate layered double hydroxide.Type: ApplicationFiled: August 9, 2018Publication date: February 21, 2019Applicants: Saudi Arabian Oil Company, Durham University, M-I Drilling Fluids UK LtdInventors: Musarrat Halima Mohammed, Andrew Whiting, Mona Al Batal, Manohara Gudiyor Veerabhadrappa, Hugh Christopher Greenwell, John Adrian Hall, Gasan Selman Alabedi, Michael Hayward Hodder
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Publication number: 20190055449Abstract: Oil-based drilling fluid compositions comprising an oil phase comprising a base oil, an aqueous phase comprising water, at least one emulsifier, and one or more additives. The at least one emulsifier comprises an amino amide comprising the formula R—CO—NH—R?—NH2, where R is a fatty acid alkyl and R? is an alkyl group. The one or more additives are chosen from a wetting agent, a rheology modifier, a fluid-loss control additive, and a weighting additive. Methods of making the oil-based drilling fluid compositions and methods of drilling a subterranean well utilizing the oil-based drilling fluid compositions are also provided.Type: ApplicationFiled: August 6, 2018Publication date: February 21, 2019Applicants: Saudi Arabian Oil Company, Durham University, M-I Drilling Fluids UK LtdInventors: Musarrat Halima Mohammed, Andrew Whiting, Hugh Christopher Greenwell, Mona Al Batal, John Adrian Hall, Gasan Selman Albedi, Michael Hayward Hodder
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Publication number: 20190055448Abstract: Oil-based drilling fluid compositions comprising an oil phase comprising a base oil, an aqueous phase comprising water, at least one emulsifier, and one or more additives. The at least one emulsifier comprises an amino amide comprising the formula R—CO—NH—R?—NH—R?—NH2, where R is a fatty acid alkyl and R? and R? are alkyl groups. The one or more additives are chosen from a wetting agent, a rheology modifier, a fluid-loss control additive, and a weighting additive. Methods of making the oil-based drilling fluid compositions and methods of drilling a subterranean well utilizing the oil-based drilling fluid compositions are also provided.Type: ApplicationFiled: August 6, 2018Publication date: February 21, 2019Applicants: Saudi Arabian Oil Company, Durham UniversityInventors: Musarrat Halima Mohammed, Mona Al Batal, Hugh Christopher Greenwell, Andrew Whiting, John Adrian Hall, Gasan Selman Alabedi, Michael Hayward Hodder
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Publication number: 20190055446Abstract: Embodiments are directed to a surfactant of formula (I) and incorporation of one or more surfactants into drilling fluids.Type: ApplicationFiled: August 10, 2018Publication date: February 21, 2019Applicants: Saudi Arabian Oil Company, Durham UniversityInventors: Mona Al Batal, Andrew Whiting, Hugh Christopher Greenwell, John Adrian Hall, Gasan Selman Alabedi
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Publication number: 20190055460Abstract: Embodiments for an oil-based drilling fluid and methods of making the oil-based drilling fluid are provided, in which the oil-base drilling fluid comprising: an oil phase; an aqueous phase; at least one surfactant, in which at least one surfactant comprises a carboxylic acid having 10 or more glycol repeating units; and optionally, at least one emulsifying agent.Type: ApplicationFiled: August 6, 2018Publication date: February 21, 2019Applicants: Saudi Arabian Oil Company, Durham University, M-I Drilling Fluids UK LtdInventors: Musarrat Halima Mohammed, Andrew Whiting, Hugh Christopher Greenwell, Mona Al Batal, John Adrian Hall, Gasan Selman Alabedi, Michael Hayward Hodder
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Publication number: 20190055451Abstract: A drilling fluid and a method of preparing the drilling fluid. The oil-based drilling fluid includes a base oil continuous phase comprising a base oil, an aqueous dispersed phase and at least one rheology modifier. The at least one rheology modifier includes a magnesium/aluminum (Mg/Al) layered-double hydroxide (LDH) diamondoid compound.Type: ApplicationFiled: August 7, 2018Publication date: February 21, 2019Applicants: Saudi Arabian Oil Company, Durham University, M-I Drilling Fluids UK LtdInventors: Musarrat Halima Mohammed, Andrew Whiting, Hugh Christopher Greenwell, Manohara Gudiyor Veerabhadrappa, John Adrian Hall, Gasan Selman Alabedi, Michael Hayward Hodder
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Publication number: 20190055447Abstract: Embodiments are directed to a surfactant of formula (V) and formula (VI).Type: ApplicationFiled: August 10, 2018Publication date: February 21, 2019Applicants: Saudi Arabian Oil Company, Durham UniversityInventors: Mona Al Batal, Andrew Whiting, Hugh Christopher Greenwell, John Adrian Hall, Gasan Selman Alabedi
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Publication number: 20190055450Abstract: A method of preparing and a composition of an oil-based drilling fluid. An oil-based drilling fluid includes a base oil continuous phase, in which the base oil continuous phase includes a base oil, an aqueous dispersed phase, and at least one rheology modifier comprising a modified magnesium/aluminum carbonate layered-double hydroxide (Mg/Al—CO3 LDH) compound.Type: ApplicationFiled: August 7, 2018Publication date: February 21, 2019Applicants: Saudi Arabian Oil Company, Durham University, M-I Drilling Fluids UK LtdInventors: Musarrat Halima Mohammed, Andrew Whiting, Hugh Christopher Greenwell, Manohara Gudiyor Veerabhadrappa, John Adrian Hall, Gasan Selman Alabedi, Michael Hayward Hodder
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Patent number: 10138199Abstract: Embodiments are directed to adamantane-intercalated layered double-hydroxide (LDH) particles and the methods of producing adamantane-intercalated LDH particles. The method comprises adding to an aqueous solution a first precursor and a second precursor to form an initial mixture, where the first precursor is Al(OH)3 or Al2O3, the second precursor is a hydroxide M(OH)2 or an oxide MO, where M is a metal of oxidation state +2; and the initial mixture has a M/Al molar ratio of from 1 to 5. The method also comprises adding to the initial mixture an amount of adamantane to form a reaction mixture having an Al/adamantane molar ratio of from 0.5 to 2; and heating the reaction mixture to produce adamantane-intercalated LDH particles, where the adamantane-intercalated LDH particles have aspect ratios greater than 100.Type: GrantFiled: March 3, 2017Date of Patent: November 27, 2018Assignees: Saudi Arabian Oil Company, Durham UniversityInventors: Manohara Gudiyor Veerabhadrappa, Hugh Christopher Greenwell, Gasan Selman Alabedi, John Adrian Hall, Abdullah A. Al-Shahrani, Andrew Whiting
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Publication number: 20180333776Abstract: Methods for preparing a layered metal nanocomposite and a layered metal nanocomposite. The method includes mixing a magnesium salt and a aluminum salt to form a Mg2+/Al3+ solution. The Mg/Al has a molar ratio of between 0.5:1 to 6:1. Then a diamondoid compound is added to the Mg2+/Al3+ solution to form a reactant mixture. The diamondoid compound has at least one carboxylic acid moiety. The reactant mixture is heated at a reaction temperature for a reaction time to form a Mg/Al-diamondoid intercalated layered double hydroxide. The Mg/Al-diamondoid intercalated layered double hydroxide is thermally decomposed under a reducing atmosphere for a decomposition time at a decomposition temperature to form the layered metal nanocomposite.Type: ApplicationFiled: April 30, 2018Publication date: November 22, 2018Applicants: Saudi Arabian Oil Company, Durham UniversityInventors: Manohara Gudiyor Veerabhadrappa, Hugh Christopher Greenwell, Andrew Whiting, John Adrian Hall, Gasan Alabedi
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Publication number: 20180333701Abstract: A method for preparing a transition-metal adamantane carboxylate salt is presented. The method includes mixing a transition-metal hydroxide and a diamondoid compound having at least one carboxylic acid moiety to form a reactant mixture, where M is a transition metal. Further, the method includes hydrothermally treating the reactant mixture at a reaction temperature for a reaction time to form the transition-metal adamantane carboxylate salt.Type: ApplicationFiled: May 4, 2018Publication date: November 22, 2018Applicants: Saudi Arabian Oil Company, Durham UniversityInventors: Manohara Gudiyor Veerabhadrappa, Hugh Christopher Greenwell, Andrew Whiting, John Adrian Hall, Gasan Alabedi
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Patent number: 10106482Abstract: A method for preparing a magnesium adamantane carboxylate salt is provided. The method includes mixing a magnesium salt and a diamondoid compound having at least one carboxylic acid moiety to form a reactant mixture and hydrothermally treating the reactant mixture at a reaction temperature for a reaction time to form the magnesium adamantane carboxylate salt.Type: GrantFiled: March 8, 2017Date of Patent: October 23, 2018Assignees: Saudi Arabian Oil Company, Durham UniversityInventors: Manohara Gudiyor Veerabhadrappa, Hugh Christopher Greenwell, Gasan Selman Alabedi, John Adrian Hall, Andrew Whiting
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Patent number: 10105684Abstract: A method for preparing a transition-metal adamantane carboxylate salt is presented. The method includes mixing a transition-metal hydroxide and a diamondoid compound having at least one carboxylic acid moiety to form a reactant mixture, where M is a transition metal. Further, the method includes hydrothermally treating the reactant mixture at a reaction temperature for a reaction time to form the transition-metal adamantane carboxylate salt.Type: GrantFiled: March 8, 2017Date of Patent: October 23, 2018Assignees: Saudi Arabian Oil Company, Durham UniversityInventors: Manohara Gudiyor Veerabhadrappa, Hugh Christopher Greenwell, Gasan Selman Alabedi, John Adrian Hall, Andrew Whiting
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Patent number: 10087355Abstract: An oil-based drilling fluid and method of preparing an oil-based drilling fluid are disclosed. The oil-based drilling fluid comprising a base oil continuous phase, an aqueous discontinuous phase, and at least one rheology modifier. The at least one rheology modifier including an alkaline-earth diamondoid compound. The method of preparing the oil-based drilling fluid including mixing a base oil, at least one emulsifier, and at least one wetting agent to form a first mixture, adding and mixing at least one rheology modifier into the first mixture to form a second mixture, adding and mixing at least one fluid-loss control additive into the second mixture to form a third mixture, adding and mixing a brine solution into the third mixture to form a fourth mixture, and adding and mixing a weighting additive into the fourth mixture to form the oil-based drilling fluid.Type: GrantFiled: March 3, 2017Date of Patent: October 2, 2018Assignees: Saudi Arabian Oil Company, Durham University, M-I Drilling Fluids U.K. LimitedInventors: Musarrat H. Mohammed, Hugh Christopher Greenwell, Manohara Gudiyor Veerabhadrappa, John Adrian Hall, Gasan Selman Alabedi, Andrew Whiting, Michael Hayward Hodder
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Publication number: 20170267620Abstract: A method for preparing a magnesium adamantane carboxylate salt is provided. The method includes mixing a magnesium salt and a diamondoid compound having at least one carboxylic acid moiety to form a reactant mixture and hydrothermally treating the reactant mixture at a reaction temperature for a reaction time to form the magnesium adamantane carboxylate salt.Type: ApplicationFiled: March 8, 2017Publication date: September 21, 2017Applicants: Saudi Arabian Oil Company, Durham UniversityInventors: Manohara Gudiyor Veerabhadrappa, Hugh Christopher Greenwell, Gasan Selman Alabedi, John Adrian Hall, Andrew Whiting