1
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: Downhole spectroscopic hydrogen sulfide detection. Schlumberger Technology Corporation, James McAleenan, Helene Raybaud, Brigid Laffey, June 14, 2011: US07959864 (8 worldwide citation)

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 charge ...


2
Philippe Salamitou, Joyce Wong, Bhavani Raghuraman, Jagdish Shah, Ronald E G Van Hal, Robert J Schroeder, Patrick Jean René Tabeling: Microfluidic separator. Schlumberger Technology Corporation, James M McAleenan, Helene Raybaud, Brigid M Laffey, April 13, 2010: US07695629 (8 worldwide citation)

The present invention provides methods and apparatus for separating and/or analyzing fluids of interest. According to principles of the present invention, fluid analysis is accomplished with microfluidic devices and may be reported in real-time or near real-time in a subterranean environment. In add ...


3
Ronald E G Van Hal, Anthony Goodwin, Oliver C Mullins, Peter S Hegeman, Bhavani Raghuraman, Soraya S Betancourt, Cosan Ayan, Ricardo Vasques, Francois Xavier Dubost, Christopher Scott Del Campo: Formation fluid sampling tools and methods utilizing chemical heating. Schlumberger Technology Corporation, James McAleenan, Vincent Loccisano, Brigid Laffey, February 15, 2011: US07886825 (6 worldwide citation)

A formation fluid sampling tool is provided with reactants which are carried downhole and which are combined in order to generate heat energy which is applied to the formation adjacent the borehole. By applying heat energy to the formation, the formation fluids are heated, thereby increasing mobilit ...


4
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: Downhole spectroscopic hydrogen sulfide detection. Schlumberger Technology Corporation, Rachel E Greene, Brigid Laffey, November 15, 2011: US08058071 (6 worldwide citation)

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 charge ...


5
Philippe Salamitou, Joyce Wong, Bhavani Raghuraman, Jagdish Shah, Ronald E G Van Hal, Robert J Schroeder, Patrick Jean René Tabeling: Microfluidic system for chemical analysis. Schlumberger Technology Corporation, James McAleenan, Vincent Loccisano, Brigid Laffey, September 21, 2010: US07799278 (6 worldwide citation)

A microfluidic system for performing fluid analysis is described having: (a) a submersible housing having a fluid analysis means and a power supply to provide power to said system; and (b) a substrate for receiving a fluid sample, having embedded therein a fluid sample inlet, a reagent inlet, a flui ...


6
Ronald E G Van Hal, Anthony Goodwin, Oliver C Mullins, Peter S Hegeman, Bhavani Raghuraman, Soraya S Betancourt, Cosan Ayan, Ricardo Vasques, Francois Xavier Dubost, Christopher Scott Del Campo: Formation fluid sampling tools and methods utilizing chemical heating. Schlumberger Technology Corporation, October 9, 2012: US08283174 (5 worldwide citation)

A formation fluid sampling tool is provided with reactants which are carried downhole and which are combined in order to generate heat energy which is applied to the formation adjacent the borehole. By applying heat energy to the formation, the formation fluids are heated, thereby increasing mobilit ...


7
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: Downhole spectroscopic hydrogen sulfide detection. Schlumberger Technology Corporation, Jakub Michna, Rachel E Greene, Bridget Laffey, August 27, 2013: US08518702 (4 worldwide citation)

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 charge ...


8
Ronald E G van Hal, Jimmy Lawrence, Jane T Lam: System and method for fluid processing with variable delivery for downhole fluid analysis. Schlumberger Technology Corporation, Jakub M Michna, Bridget Laffey, September 9, 2014: US08826981 (3 worldwide citation)

Described herein are variable-volume reservoir (e.g., syringe pump) based processes and systems usable to characterize samples of reservoir fluids, without having to first transport the fluids to the surface. Variable-volume reservoirs are used, for example, for one or more of storing reactants, con ...


9
Ronald E G van Hal, Hua Chen: Microsensor for mercury. Schlumberger Technology Corporation, Jakub M Michna, Rachel Greene, Brigid Laffey, February 26, 2013: US08383048 (1 worldwide citation)

Methods and devices for detecting a concentration of one or more element in hydrocarbon and/or natural gas in a oil and gas field application. The device including a microstructure having a low thermal mass suspended within a channel, the microstructure includes a supporting layer and a insulating l ...


10
Adriaan Gisolf, Youxiang Zuo, Ronald E G van Hal, Jeffrey Crank: Fluid composition and reservoir analysis using gas chromatography. SCHLUMBERGER TECHNOLOGY CORPORATION, Michael Dae, July 3, 2018: US10012633

Methods are provided for reservoir analysis. In some embodiments, a reservoir may be analyzed by obtaining abundance ratios at a first measurement station and a second measurement station and determining an abundance ratio trend. Abundance ratios at a third measurement station may be obtained and pl ...