1
Alexandre G E Kosmala, Attilio C Pisoni, Dimitrios K Pirovolou, Spyro J Kotsonis: Actively controlled rotary steerable system and method for drilling wells. Schlumberger Technology Corporation, James L Jackson, Wayne I Kanak, Steven L Christian, July 25, 2000: US06092610 (236 worldwide citation)

An actively controlled rotary steerable drilling system for directional drilling of wells having a tool collar rotated by a drill string during well drilling. A bit shaft has an upper portion within the tool collar and a lower end extending from the collar and supporting a drill bit. The bit shaft i ...


2
Chistophe M Rayssiguier, Michael R Johnson, Ronald E Pringle, John A Booker, Alexandre G E Kosmala: Communicating with devices positioned outside a liner in a wellbore. Schlumberger Technology, Jeffrey E Griffin, Jaime A Castano, April 30, 2002: US06378610 (48 worldwide citation)

A downhole string includes a liner and devices positioned outside the liner. One or more control lines extend from the liner devices along the exterior of the liner to one or more connectors that provide connection points inside the liner. The one or more connectors may include electrical connectors ...


3
Eugene P McLoughlin, Scott A Rubinstein, Ricardo Martinez, Alexandre G E Kosmala: Valve for use in wells. Schlumberger Technology Corporation, Jeffrey E Griffin, Brigitte Jeffery Echols, Van Someren P C, December 30, 2003: US06668935 (27 worldwide citation)

A valve assembly to control the intake of fluid. The valve assembly has a valve body and a valve choke disposed therein. The valve choke has a choke bore through the interior of the valve choke. The valve choke has a plurality of orifices to the choke bore spaced at intervals along the valve choke. ...


4
Eugene P McLoughlin, Scott A Rubinstein, Ricardo Martinez, Alexandre G E Kosmala: Valves for use in wells. Schlumberger Technology Corporation, Van Someren P C, Kevin P McEnaney, Jaime A Castano, November 22, 2005: US06966380 (16 worldwide citation)

A valve assembly to control the intake of fluid. The valve assembly has a valve body and a valve choke disposed therein. The valve choke has a choke bore through the interior of the valve choke. The valve choke has a plurality of orifices to the choke bore spaced at intervals along the valve choke. ...


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 ...