1
Christopher Harrison, Oliver C Mullins, Olivier Vancauwenberghe, Eric P Donzier, Akihito Chikenji, Anthony Robert Holmes Goodwin, Julian J Pop: Protective barriers for small devices. Schlumberger Technology Corporation, Matthias Abrell, Jaime Castano, Dale Gaudier, March 9, 2010: US07673679 (93 worldwide citation)

Protective barriers for small devices, such as sensors, actuators, flow control devices, among others, protect the devices from erosive and/or corrosive fluids, for example, formation fluids under harsh downhole conditions. The protective barriers include protective coatings and fluid diverting stru ...


2
Patrick Fisseler, Tom Palmer, James Mather, Colin Longfield, Richard Meehan, Jean Marc Follini, Jean Michel Hache: Apparatus and method for acquiring information while drilling. Schlumberger Technology Corporation, Jennis Salazar, Matthias Abrell, Victor H Segura, October 3, 2006: US07114562 (82 worldwide citation)

An apparatus and method useful for acquiring information from a subsurface formation penetrated by a wellbore contemplate the use of a tubular body adapted for connection within a drill string disposed in the wellbore. The tubular body is equipped with one or more protuberances (e.g., ribs) defining ...


3
Dinesh R Patel: Downhole dissolvable plug. Schlumberger Technology Corporation, Chadwick Sullivan, Rodney Warfford, Matthias Abrell, October 2, 2012: US08276670 (61 worldwide citation)

A downhole plug can include a housing having an aperture disposed generally through the center of the housing. A stopper can be disposed in the aperture and adapted to block fluid flow therethrough. The stopper can have a composition of at least two different materials. One or more covers can be at ...


4
Toru Terabayashi, Akihito Chikenji, Tsutomu Yamate, Oliver C Mullins, Andrew L Kurkjian, Hani Elshahawi: Methods and apparatus of downhole fluid analysis. Schlumberger Technology Corporation, Matthias Abrell, Jaime Castano, Dale Gaudier, December 9, 2008: US07461547 (60 worldwide citation)

Methods and apparatus for downhole analysis of formation fluids by isolating the fluids from the formation and/or borehole in a pressure and volume control unit that is integrated with a flowline of a fluid analysis module and determining fluid characteristics of the isolated fluids. Parameters of i ...


5
Steven G Villareal, Reinhart Ciglenec, Michael J Stucker, Khanh Duong: Formation evaluation while drilling. Schlumberger Technology Corporation, Matthias Abrell, Kevin P McEnaney, Dale V Gaudier, May 6, 2008: US07367394 (45 worldwide citation)

A sampling while drilling tool positionable in a wellbore penetrating a subterranean formation is provided. The tool includes a drill collar, at least one sample chamber, at least one flowline and at least one cover. The drill collar is operatively connectable to a drill string of the sampling while ...


6
Soon Seong Chee, Remy Parmentier, Xu Wu, Colin Wilson, Juei Igarashi: Optical fiber system and method for wellhole sensing of magnetic permeability using diffraction effect of faraday rotator. Schlumberger Technology Corporation, Matthias Abrell, Jaime Castano, Dale Gaudier, August 19, 2008: US07413011 (40 worldwide citation)

Systems and methods for optically determining casing collar and/or corrosion locations within boreholes, using the diffraction effect of Faraday crystals through which depolarized continuous light is transmitted within optical fibers.


7
Geoff Downton, Steven James Hart, John David Rowatt: Hybrid rotary steerable system. Schlumberge Technology Corporation, Matthias Abrell, Brigitte L Echols, Dale V Gandier, March 13, 2007: US07188685 (38 worldwide citation)

A bottom hole assembly is rotatably adapted for drilling directional boreholes into an earthen formation. It has an upper stabilizer mounted to a collar, and a rotary steerable system. The rotary steerable system has an upper section connected to the collar, a steering section, and a drill bit arran ...


8
Stephane Vannuffelen, Akira Kamiya, Masaki Miyashita, Kentaro Indo, Reinhart Ciglenec, Tsutomu Yamate: Method and apparatus for downhole spectral analysis of fluids. Schlumberger Technology Corporation, Matthias Abrell, Jaime Castano, Dale Gaudier, May 27, 2008: US07379180 (38 worldwide citation)

A fluid analysis system for use downhole comprises an input light signal that is directed through a fluid sample housed in a sample cell. The input light signal may originate from a plurality of light sources. An output light signal from the sample cell is then routed to one or more spectrometers fo ...


9
Tsutomu Yamate, Soon Seong Chee, Stephane Vannuffelen, Colin A Wilson, Juei Igarashi, Khalid Ouaaba, Koichi Naito: High-temperature downhole devices. Schlumberger Technology Corporation, Matthias Abrell, Jody DeStefanis, Jeff Griffin, May 18, 2010: US07720323 (37 worldwide citation)

Subterranean oilfield high-temperature devices configured or designed to facilitate downhole monitoring and high data transmission rates with laser diodes that are configured for operation downhole, within a borehole, at temperatures in excess of 115 degrees centigrade without active cooling.


10
Lennox Reid, Edward Harrigan, William E Brennan III: Downhole formation testing tool. Schlumberger Technology Corporation, Matthias Abrell, Kevin P McEnaney, William Batzer, March 20, 2007: US07191831 (34 worldwide citation)

Embodiments of the invention relate to a wireline assembly that includes a coring tool for taking coring samples of the formation and a formation testing tool for taking fluid samples from the formation, where the formation testing tool is operatively connected to the coring tool. In some embodiment ...