Patents by Inventor Gale H. Gustavson
Gale H. Gustavson 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: 8518702Abstract: Methods and related apparatuses and mixtures are described for detecting hydrogen sulfide in a formation fluid downhole. A detection mixture is combined with the formation fluid downhole. The detection mixture includes metal ions for reacting with hydrogen sulfide forming a metal sulfide, and charged nanoparticles sized so as to inhibit significant aggregation of the metal sulfide so as to enable spectroscopic detection of the metal sulfide downhole. The combined mixture and formation fluid is then spectroscopically interrogated so as to detect the presence of the metal sulfide thereby indicating the presence of hydrogen sulfide in the formation fluid. The mixture also includes chelating ligands for sustaining thermal endurance of the mixture under downhole conditions.Type: GrantFiled: January 19, 2011Date of Patent: August 27, 2013Assignee: Schlumberger Technology CorporationInventors: Li Jiang, Oliver C. Mullins, Gale H. Gustavson, Christopher Harrison, Bhavani Raghuraman, Ronald E. G. Van Hal, Jimmy Lawrence, Kosta Ladavac, Albert Ballard Andrews, Timothy Gareth John Jones, Rogerio Tadeu Ramos
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Patent number: 8058071Abstract: Methods and related apparatuses and mixtures are described for detecting hydrogen sulfide in a formation fluid downhole. A detection mixture is combined with the formation fluid downhole. The detection mixture includes metal ions for reacting with hydrogen sulfide forming a metal sulfide, and charged nanoparticles sized so as to inhibit significant aggregation of the metal sulfide so as to enable spectroscopic detection of the metal sulfide downhole. The combined mixture and formation fluid is then spectroscopically interrogated so as to detect the presence of the metal sulfide thereby indicating the presence of hydrogen sulfide in the formation fluid. The mixture also includes chelating ligands for sustaining thermal endurance of the mixture under downhole conditions.Type: GrantFiled: January 19, 2011Date of Patent: November 15, 2011Assignee: Schlumberger Technology CorporationInventors: Li Jiang, Oliver C. Mullins, Gale H. Gustavson, Christopher Harrison, Bhavani Raghuraman, Ronald E. G. Van Hal, Jimmy Lawrence, Kosta Ladavac, Albert Ballard Andrews, Timothy Gareth John Jones, Rogerio Tadeu Ramos
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Patent number: 7993604Abstract: An indicator mixture that allows pH measurement over a broader range of pH or to a higher accuracy than available using conventional spectroscopic techniques. In particular, the mixture of the present invention is comprised of two or more reagents such that when combined, the reagent mixture is capable of either detecting: (1) a pH range broader or more accurate than that the reagents individually, or (2) pH more accurately than the reagents individually. Also disclosed are methods of making and using the mixture.Type: GrantFiled: August 29, 2008Date of Patent: August 9, 2011Assignee: Schlumberger Technology CorporationInventors: Bhavani Raghuraman, Gale H. Gustavson, Emilie Dressaire, Oleg Zhdaneev, Ronald Van Hal, Oliver Mullins, Philippe Salamitou
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Patent number: 7959864Abstract: Methods and related apparatuses and mixtures are described for detecting hydrogen sulfide in a formation fluid downhole. A detection mixture is combined with the formation fluid downhole. The detection mixture includes metal ions for reacting with hydrogen sulfide forming a metal sulfide, and charged nanoparticles sized so as to inhibit significant aggregation of the metal sulfide so as to enable spectroscopic detection of the metal sulfide downhole. The combined mixture and formation fluid is then spectroscopically interrogated so as to detect the presence of the metal sulfide thereby indicating the presence of hydrogen sulfide in the formation fluid. The mixture also includes chelating ligands for sustaining thermal endurance of the mixture under downhole conditions.Type: GrantFiled: October 26, 2007Date of Patent: June 14, 2011Assignee: Schlumberger Technology CorporationInventors: Li Jiang, Oliver C. Mullins, Gale H. Gustavson, Christopher Harrison, Bhavani Raghuraman, Ronald E. G. Van Hal, Jimmy Lawrence, Kosta Ladavac, A. Ballard Andrews, Timothy Gareth John Jones, Rogerio Tadeu Ramos
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Publication number: 20110111507Abstract: Methods and related apparatuses and mixtures are described for detecting hydrogen sulfide in a formation fluid downhole. A detection mixture is combined with the formation fluid downhole. The detection mixture includes metal ions for reacting with hydrogen sulfide forming a metal sulfide, and charged nanoparticles sized so as to inhibit significant aggregation of the metal sulfide so as to enable spectroscopic detection of the metal sulfide downhole. The combined mixture and formation fluid is then spectroscopically interrogated so as to detect the presence of the metal sulfide thereby indicating the presence of hydrogen sulfide in the formation fluid. The mixture also includes chelating ligands for sustaining thermal endurance of the mixture under downhole conditions.Type: ApplicationFiled: January 19, 2011Publication date: May 12, 2011Applicant: Schlumberger Technology CorporationInventors: Li Jiang, Oliver C. Mullins, Gale H. Gustavson, Christopher Harrison, Bhavani Raghuraman, Ronald E.G. Van Hal, Jimmy Lawrence, Kosta Ladavac, A. Ballard Andrews, Timothy Gareth John Jones, Rogerio Tadeu Ramos
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Publication number: 20110104809Abstract: Methods and related apparatuses and mixtures are described for detecting hydrogen sulfide in a formation fluid downhole. A detection mixture is combined with the formation fluid downhole. The detection mixture includes metal ions for reacting with hydrogen sulfide forming a metal sulfide, and charged nanoparticles sized so as to inhibit significant aggregation of the metal sulfide so as to enable spectroscopic detection of the metal sulfide downhole. The combined mixture and formation fluid is then spectroscopically interrogated so as to detect the presence of the metal sulfide thereby indicating the presence of hydrogen sulfide in the formation fluid. The mixture also includes chelating ligands for sustaining thermal endurance of the mixture under downhole conditions.Type: ApplicationFiled: January 19, 2011Publication date: May 5, 2011Applicant: Schlumberger Technology CorporationInventors: Li Jiang, Oliver C. Mullins, Gale H. Gustavson, Christopher Harrison, Bhavani Raghuraman, Ronald E.G. Van Hal, Jimmy Lawrence, Kosta Ladavac, A. Ballard Andrews, Timothy Gareth John Jones, Rogerio Tadeu Ramos
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Publication number: 20090107667Abstract: Methods and related apparatuses and mixtures are described for detecting hydrogen sulfide in a formation fluid downhole. A detection mixture is combined with the formation fluid downhole. The detection mixture includes metal ions for reacting with hydrogen sulfide forming a metal sulfide, and charged nanoparticles sized so as to inhibit significant aggregation of the metal sulfide so as to enable spectroscopic detection of the metal sulfide downhole. The combined mixture and formation fluid is then spectroscopically interrogated so as to detect the presence of the metal sulfide thereby indicating the presence of hydrogen sulfide in the formation fluid. The mixture also includes chelating ligands for sustaining thermal endurance of the mixture under downhole conditions.Type: ApplicationFiled: October 26, 2007Publication date: April 30, 2009Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Oliver C. Mullins, Gale H. Gustavson, Christopher Harrison, Bhavani Raghuraman, Ronald E.G. Van Hal, Jimmy Lawrence, Kosta Ladavac, A. Ballard Andrews, Timothy Gareth John Jones, Rogerio Tadeu Ramos
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Publication number: 20090084175Abstract: An indicator mixture that allows pH measurement over a broader range of pH or to a higher accuracy than available using conventional spectroscopic techniques. In particular, the mixture of the present invention is comprised of two or more reagents such that when combined, the reagent mixture is capable of either detecting: (1) a pH range broader or more accurate than that the reagents individually, or (2) pH more accurately than the reagents individually. Also disclosed are methods of making and using the mixture.Type: ApplicationFiled: August 29, 2008Publication date: April 2, 2009Applicant: Schlumberger Technology CorporationInventors: Bhavani Raghuraman, Gale H. Gustavson, Emilie Dressaire, Oleg Zhdaneev, Ronald Van Hal, Oliver Mullins, Philippe Salamitou
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Publication number: 20090047181Abstract: A method for analyzing formation fluid in earth formation surrounding a borehole includes storing analytical reagent in a reagent container in a fluids analyzer in a formation tester and moving the formation tester, including the reagent, downhole. Reagent from the reagent container is injected into formation fluid in the flow-line to make a mixture of formation fluid and reagent. The mixture is moved through a spectral analyzer cell in the fluids analyzer to produce a time-series of optical density measurements at a plurality of wavelengths. A characteristic of formation fluid is determined by spectral analysis of the time-series of optical density measurements.Type: ApplicationFiled: August 14, 2008Publication date: February 19, 2009Applicant: Schlumberger Technology CorporationInventors: Torleif Torgersen, Bhavani Raghuraman, Edward Harrigan, Oliver C. Mullins, Gale H. Gustavson, Philip A. Rabbito, Ricardo Reves Vasques
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Patent number: 7432109Abstract: An indicator mixture that allows pH measurement over a broader range of pH or to a higher accuracy than available using conventional spectroscopic techniques. In particular, the mixture of the present invention is comprised of two or more reagents such that when combined, the reagent mixture is capable of either detecting: (1) a pH range broader or more accurate than that the reagents individually, or (2) pH more accurately than the reagents individually. Also disclosed are methods of making and using the mixture.Type: GrantFiled: February 19, 2004Date of Patent: October 7, 2008Assignee: Schlumberger Technology CorporationInventors: Bhavani Raghuraman, Gale H. Gustavson, Emilie Dressaire, Oleg Zhdaneev, Ronald Van Hal, Oliver Mullins, Philippe Salamitou
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Publication number: 20040219064Abstract: An indicator mixture that allows pH measurement over a broader range of pH or to a higher accuracy than available using conventional spectroscopic techniques. In particular, the mixture of the present invention is comprised of two or more reagents such that when combined, the reagent mixture is capable of either detecting: (1) a pH range broader or more accurate than that the reagents individually, or (2) pH more accurately than the reagents individually. Also disclosed are methods of making and using the mixture.Type: ApplicationFiled: February 19, 2004Publication date: November 4, 2004Applicant: SCHLUMBER TECHNOLOGY CORPORATIONInventors: Bhavani Raghuraman, Gale H. Gustavson, Emilie Dressaire, Oleg Zhdaneev, Ronald Van Hal, Oliver Mullins, Philippe Salamitou