1
Babour Kamal, Rossi David, Chouzenoux Christian: Power and signal transmission using insulated conduit for permanent downhole installations. Schlumberger Technology, Schlumberger Services Petrol, Schlumberger Holdings, December 15, 1999: EP0964134-A2 (53 worldwide citation)

An apparatus and method is presented for establishing electrical connection to permanent downhole oilfield installations (26,27,28) using an electrically insulated conducting casing (22). Current is caused to flow in the casing by a source on the surface connected to the casing (22). One or more per ...


2
Babour Kamal, Rossi David, Chouzenoux Christian: Power and signal transmission for wellbores. Schlumberger, December 15, 1999: GB2338253-A (23 worldwide citation)

Apparatus for transmitting an electrical signal to or from a downhole device 28 in a well 1 comprises an electrically conductive conduit having an insulative encapsulation layer 30 around a section 22B of the conduit and a conduit gap 11 insulating the insulated section 22B from an adjoining section ...


3
Chouzenoux Christian, Nouaze Veronique: Method and apparatus for communicating across casing. Schlumberger Services Petrol, Schlumberger Technology, Schlumberger Holdings, Prad Res & Dev, Schlumberger Oilfield Assist, May 31, 2006: EP1662673-A1 (10 worldwide citation)

A system for passing an electromagnetic signal through a casing comprises a tool body that can be positioned inside the casing; means for magnetically saturating the casing in the vicinity of the tool; a transmitter for transmitting an electromagnetic signal from the tool antenna to the outside of t ...


4
Chouzenoux Christian, Ciglenec Reinhart, Tabanou Jacques R, Eckersley Clive P: Casing joint having a window to allow the transmission of electromagnetic signals to a remote sensing unit. Schlumberger Holdings, March 14, 2001: GB2354026-A (7 worldwide citation)

A casing joint 2910 for use with a downhole data acquisition system includes a conductive portion to provide structural integrity to the joint and at least one non-conductive (insulative) window 2922 which allows the transmission of electromagnetic signals, for example to a remote sensing unit 2400 ...


5
Chouzenoux Christian, Manin Yves, Drochon Bruno: Deployment of underground sensors in casing. Service Petroliers Schlumberge, Schlumberger Technology, Schlumberger Holdings, December 28, 2005: EP1609947-A1 (7 worldwide citation)

The present invention discloses a subsurface formation fluids monitoring system integrated on a casing (100) or tubing sub having an inner (11) and an outer (12) surface and defining an internal cavity (14), comprising a sensor (24) mounted on the outer surface; data communication means (21A) for pr ...


6
Patel Dinesh R, Ross Donald W, Veneruso Anthony Frank, Cens Fabien, Lovell John R, Beaulieu Jean Philippe, Chouzenoux Christian: Sand screen with sensor and inductive coupler. Schlumberger Holdings, October 3, 2007: GB2436579-A (6 worldwide citation)

A completion system for use in a well includes a lower completion section 102 and an upper completion section 100. The first completion section has a sand screen 110 to prevent passage of particulates, a first inductive coupler portion 118, and a sensor 114 positioned proximate to the sand control a ...


7
Hiron Stephane, Mathieu Yves, Chouzenoux Christian, Gourdonneau Patrick, Renoux Nicolas: Redundant systems for oil well downhole permanent systems. Schlumberger Holdings, November 3, 2004: GB2401295-A (6 worldwide citation)

A well instrumentation system, comprising: a power and data supply 24,26; and a plurality of functional units 28 attached to the power and data supply and distributed throughout the well, characterised in that the power and data supply comprises first 20 and second 22 substantially identical cables, ...


8
Veneruso Anthony, Nouaze Veronique, Chouzenoux Christian, Janssen Eugene, Pauchet Frederic, Parmentier Bernard, Durisotti Sylvain, Barbara Francois, Parent Philippe, Garando Lahcen: Contact-less sensor cartridge. Schlumberger Services Petrol, Schlumberger Technology, Schlumberger Holdings, Prad Res &Amp, Dev, March 26, 2008: EP1903181-A1 (4 worldwide citation)

The invention provides a sensor cartridge comprising: (a) a protective housing (10), the protective housing being resistant to downhole oilfield environment; (b) a sensor (1) within the protective housing able to measure a parameter of the downhole oilfield environment; (c) an attaching means (5) to ...


9
Wu Xu, Kalb Frederique, Chouzenoux Christian: Turbine flow meter for measuring flow velocity and direction. Schlumberger Services Petrol, Schlumberger Technology, Schlumberger Holdings, Prad Res & Dev, Schlumberger Oilfield Assist, January 3, 2007: EP1739396-A1 (2 worldwide citation)

A device 1 for measuring a fluid flow FF velocity and direction comprises : - a pivotable means 2 adapted to rotate at a pivotable means rotation velocity and direction depending on the fluid flow velocity and direction when in contact with the fluid flow, - a modulator 3 coupled to the pivotable me ...


10
Edwards John, Gambier Philippe, Tourillon Vincent, Chouzenoux Christian, Rioufol Emmanuel: Deployment of underground sensors. Schlumberger Holdings, October 29, 2003: GB2387859-A (2 worldwide citation)

A casing 10, having a sensor 18 in a carrier 14 located on its exterior, is passed into a wellbore 24 and cemented into position. The sensor is preferably a pressure gauge and is held at one end of a chamber 16 within the carrier 14 while a buffer tube 22 may be located at the other end. The buffer ...