1
Rogerio Tadeu Ramos, Bernard Elie Theron, Andrew J Reischer, William F Murphy, Ian David Bryant, David J Wilkinson: Separation of oil-well fluid mixtures. Schlumberger Technology Corporation, William L Wang, William B Batzer, John J Ryberg, April 13, 2004: US06719048 (72 worldwide citation)

A method and apparatus for the separation of the water from the oil/gas in the well itself, down-hole, in which gravity is allowed to work on the mixture in a non-vertical section of the well, and then, using separated flow paths, the gravity-separated components pumped to the surface or into a subt ...


2
Rogerio Tadeu Ramos, Willem A Wijnberg, Christian Jean Marcel Chouzenoux, Stephanie Marie Odile Montillet: Cable connection to sensors in a well. Schlumberger Technology Corporation, William L Wang, William B Batzer, John J Ryberg, September 10, 2002: US06446723 (60 worldwide citation)

A description of a cable for connection to sensors permanently downhole is provided, the cable comprising a plurality of elongate conductors capable of operative connection to sensors, a sheath surrounding the elongate conductors and holding the conductors so as to extend substantially parallel to a ...


3
Rogerio Tadeu Ramos, Kenneth Stephenson: Apparatus and tool using tracers and singles point optical probes for measuring characteristics of fluid flow in a hydrocarbon well and methods of processing resulting signals. Schlumberger Technology Corporation, David P Gordon, William B Batzer, January 18, 2000: US06016191 (37 worldwide citation)

Single point optical probes for measuring three-phase characteristics of fluid flow in a hydrocarbon well and methods of processing signals generated by the probe are disclosed. A single fiber optic probe is coupled to a light source and apparatus for detecting reflectance and fluorescence. Light is ...


4
Rogerio Tadeu Ramos, Edmund J Fordham: Optical probes. Schlumberger Technology Corporation, Keith G W Smith, Peter Y Lee, November 3, 1998: US05831743 (34 worldwide citation)

After an oil well has been drilled, lined and cased, and is producing, it may be desirable in situ (either at the wellhead or downhole) to measure, and log (record), the rate at which fluid, and its several distinct components, is flowing out of the geological formations through which the bore has b ...


5
Elizabeth B Dussan V, Xu Wu, Oliver C Mullins, Richard Gaylor, Rogerio Tadeu Ramos, Kenneth Stephenson: Methods and apparatus utilizing a derivative of a fluorescene signal for measuring the characteristics of a multiphase fluid flow in a hydrocarbon well. Schlumberger Technology Corporation, David P Gordon, William B Batzer, June 13, 2000: US06075611 (34 worldwide citation)

Single point optical probes for measuring three-phase characteristics of fluid flow in a hydrocarbon well and methods of processing signals generated by the probe are disclosed. A single fiber optic probe is coupled to a light source and apparatus for detecting reflectance and fluorescence. Light is ...


6
Xu Wu, Edmund J Fordham, Oliver C Mullins, Rogerio Tadeu Ramos: Single point optical probe for measuring three-phase characteristics of fluid flow in a hydrocarbon well. Schlumberger Technology Corporation, David P Gordon, William B Batzer, February 8, 2000: US06023340 (29 worldwide citation)

Single point optical probes for measuring three-phase characteristics of fluid flow in a hydrocarbon well and methods of processing signals generated by the probe are disclosed. A probe having a single fiber optic is coupled to a light source and apparatus for detecting reflectance and fluorescence. ...


7
Rogerio Tadeu Ramos, Christian Besson, Andrew Hunt: Method and system for cement lining a wellbore. Schlumberger Technology Corporation, Jody Lynn DeStefanis, William L Wang, Dale Gaudier, February 7, 2006: US06994167 (24 worldwide citation)

The invention describes a method of cement lining a wellbore to enable a fixed sensor internal of the lining to sense characteristics of the external formations surrounding the wellbore using, at the region of the sensor position, a permeability changing device before completion of setting of the ce ...


8
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 ...


9
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 ...


10
Rogerio Tadeu Ramos, Andrew Strong, Gareth Lees: Method and system for estimating fluid leak flow rates using distributed optical fiber sensors. Schlumberger Technology Corporation, Brandon S Clark, August 27, 2013: US08520195 (6 worldwide citation)

A leak detection system and method is provided for a structure having a first barrier to a first fluid and a second barrier to a second fluid, the first barrier and the second barrier defining a space therebetween. The system includes at least one sensor, such as a fiber optic sensor, placed in the ...