1
Adrian J Stewart, Christophe M Rayssiguier, Jean Paul Ribeyre: Test tree closure device for a cased subsea oil well. Schlumberger Technology Corporation, June 30, 1998: US05771974 (43 worldwide citation)

In an offshore oil installation, the closure device (40) of a subsurface test tree placed in the blowout preventer stack on the seabed is made in a modular manner. More precisely, the closure device comprises a plurality of lengths (54,56') suitable for being placed in arbitrary order between a top ...


2
Christophe M Rayssiguier, Vong Vongphakdy: Hydraulically actuated valve. Schlumberger Technology, Timothy W Curington, Jeffrey E Griffin, Brigitte Jeffery, February 25, 2003: US06523613 (21 worldwide citation)

The present invention provides a hydraulically actuated valve adapted for use in downhole well applications that enables control of several hydraulic devices from a single control line. In one embodiment, the valve has a valve body defining an inlet and first and second outlets. A spring-biased pist ...


3
Christophe M Rayssiguier, Vong Vongphakdy: Hydraulic actuator. Schlumberger Technology Corporation, Tim W Curington, Jeffrey W Griffin, Brigitte L Jeffery, January 14, 2003: US06505684 (19 worldwide citation)

The present invention provides a hydraulic actuator adapted for use in downhole well applications that enables control of several hydraulic devices from a single control line.


4
Christophe M Rayssiguier, Vong Vongphakdy: Hydraulic actuator. Schlumberger Technology Corporation, Tim W Cusington, Jeffrey E Griffin, Brigitte L Jeffery, January 7, 2003: US06502640 (17 worldwide citation)

The present invention provides a hydraulic actuator adapted for use in downhole well applications that enables control of several hydraulic devices from a single control line.


5
David L Malone, Christophe M Rayssiguier, Alexandre G E Kosmala, Michael R Johnson, Joseph P Varkey: Pressurized system for protecting signal transfer capability at a subsurface location. Schlumberger Technology Corporation, Jeffery E Griffin, Brigitte Jeffery Echols, Van Someren P C, April 27, 2004: US06727828 (13 worldwide citation)

A system for protecting the transmission of signals from and/or to a tool in a high pressure environment. The system includes a tool connected to a signal transmission line, such as an electrical cable or optical fiber. The signal transmission line is surrounded by a protective tube that is connecte ...


6
Christophe M Rayssiguier, Jason K Jonas: System and method for controlling downhole tools. Schlumberger Technology Corporation, Van Someren PC, Bryan P Galloway, Jaime A Castano, February 27, 2007: US07182139 (9 worldwide citation)

A system and method is provided for integrated control of multiple well tools. Predetermined pressure levels are utilized in independently actuating specific well tools from a plurality of well tools. The number of well tools independently controlled may be greater than the number of fluid control l ...


7
David L Malone, Christophe M Rayssiguier: Pressurized connector for high pressure applications. Schlumberger Technology Corporation, Jeffrey E Griffin, Brigitte Jeffery, Fletcher Yoder & Van Someren, June 24, 2003: US06582145 (8 worldwide citation)

A connector system for protecting the transmission of signals from and/or to a tool in a high pressure environment. The system includes a connector through which a signal transmission line, such as an electrical cable or optical fiber extends. The connector is coupled to a protective tube, and inclu ...


8
Christophe M Rayssiguier, Simon Gareth James, Philippe Gambier: Method and apparatus for treatment of a perforated casing. Schlumberger Technology Corporation, Michael Dae, July 2, 2013: US08474523 (3 worldwide citation)

A method of and apparatus for treating a zone in a well is disclosed. A tube that is permeable to a material is inserted into a wellbore, creating an annulus inside the wellbore. Two zones—the annular region and the formation surrounding the wellbore—may be treated. The method comprises the followin ...


9
David L Malone, Christophe M Rayssiguier: Backflow prevention device. Schlumberger Technology Corporation, Fletcher Yoder & Van Someren, January 29, 2002: US06341652 (3 worldwide citation)

A system for preventing backflow of a fluid from one zone to another, e.g. from a lower wellbore zone to an upper wellbore zone. The system is deployed in cooperation with a tube, such as a tube utilized to protect electrical or optical signal transfer lines. A one-way check valve is deployed in the ...


10
Laurent Alteirac, Christophe M Rayssiguier, Carlos Merino: Downhole data transmission system. Schlumberger Technology Corporation, Cameron R Sneddon, Diana M Sangalli, March 15, 2016: US09284834 (2 worldwide citation)

A method and system are disclosed herein relating to transmitting data within a borehole. The method and system include having a transmitter disposed at a first location within the borehole and configured to generate a first signal, and more than one receiver and/or repeater disposed at a second loc ...