Schlumberger Technology Corporation

Prad Research and Development Nv

Services Petroliers Schlumberger

Schlumberger Holdings Limited

Prad Research and Development Limited

Schlumberger Oilfield Assistance Limited

Christian Chouzenoux

Yann Dufour

Anthony Frank Veneruso

Kamal Babour

Fabien Cens

Yves G Mathieu

Dinesh R Patel

John R Lovell

Martin G Luling

Yves Manin

Paul Beguin

Francesco Vaghi

Alain Guelat

Benoit Schmitt

Brian Oliver Clark

Bruno Drochon

Philippe Gambier

Jacques R Tabanou

Reinhart Ciglenec

Xu Wu

Jacques A Jundt

Donald W Ross

John E Edwards

David J Rossi

Oguzhan Guven

Emmanuel Rioufol

Andrew J Parry

Benoit Deville

Erwann Lemenager

Philippe Salamitou

Frederic Pauchet

Nicolas Renoux

Dominique Benimeli

Vincent Tourillon

Didier Pohl

Frederique Kalb

Eduardo Scussiato

Eugene Janssen

Jean-Philippe Beaulieu

Philippe Souhaite

Bernard G Juchereau

Lahcen Garando

Philippe R Parent

Eric Grandgirard

Ashish Chaudhary

Bernard Parmentier

Cash Elston

Veronique Nouaze

Olivier Loeuillet

José Teixeira

Vinicius Romano

Benjamin Charles Perrin

Helvecio Carlos Klinke Da Silveira

Carlos Vieira

Cecile Lionnet

Clive Eckersley

Véronique Nouaze

Sylvain Durisotti

Patrick Gourdonneau

Stéphane Hiron

François Barbara

Jean Luc Garcia

Sara Escanero

Christophe Champagnon

Erwan Lemenager

Juergen Etudes Et Productions Schlumberger Zach

Erwann Etudes Et Prod Schlumberger Lemenager

Frédéric Pauchet

Philippe Parent

Jose Teixeira

Antony Veneruso

A downhole valve assembly includes a safety valve and an actuator that opens and/or closes the valve. The actuator can be an electro-hydraulic actuator (EHA), an electro mechanical actuator (EMA), or an electro hydraulic pump (EHP). The downhole safety valve can also include an electric magnet. The electric magnet can act as or control a magnetic decoupling mechanism to control closure of the safety valve.

Safety valve with electrical actuators

Wireless power and telemetry systems for multi-stage completions are provided. Various configurations for couplers, e.g., electro-magnetic couplers, for use in such systems are also provided.

Multi-stage wireless completions

A downhole valve assembly includes a safety valve and an actuator that opens and/or closes the valve. The actuator can be an electro-hydraulic actuator (EHA), an electro mechanical actuator (EMA), or an electro hydraulic pump (EHP). The downhole safety valve can also include an electric magnet.

A technique facilitates nonintrusive monitoring of a fluid constituent within an overall fluid flow. The system and methodology may be used downhole to monitor, e.g., the volume fraction of water in produced well fluid. The system comprises a sensor system combined with a component, e.g. a well component, having a flow passage for receiving a fluid flow. At least a portion of the fluid flow moves through the sensor system which may comprise a main electrode, a guard electrode, and an insulator to isolate the main electrode and the guard electrode. The main electrode and the guard electrode are oriented circumferentially around the fluid flow to obtain capacitance data on the fluid flowing through the sensor system. The capacitance data may be processed to determine the fraction of a specific constituent within the fluid flow, e.g. to determine the volume fraction of water in a well fluid flow.

System having non-intrusive fluid sensor

A technique facilitates evaluation of a fluid flowing through a tubing and includes at least one sensor deployed along an interior of the tubing. Each sensor comprises a plurality of electrodes and insulation material disposed between the electrodes to isolate the electrodes from each other and to facilitate resistivity measurements. The plurality of electrodes comprises electrodes for emitting an electric current and for monitoring voltage so as to enable resistivity measurements with respect to fluid flowing through the tubing. The resistivity measurements may be used to determine a constituent fraction, e.g. a water fraction, of the fluid flowing through the tubing.

Resistivity measurement for evaluating a fluid

Techniques involve determining the conductivity profile of a formation from a well between a surface location and a borehole location. The method involves placing a first sensor at the surface location, a second sensor located at the borehole location, obtaining a first signal by detecting Schumann resonances from the electric field occurring at the first location, obtaining a second signal by detecting Schumann resonances from the electric field occurring at the second location with the second sensor; and combining the first and the second signal to determine the conductivity profile of the formation between the first location and the second location.

Method and apparatus for transmitting or receiving information between a downhole equipment and surface

A sensor for measuring water fraction in a fluid mixture flowing in a conductive tubing within a borehole. The sensor comprises: an active probe, a reference probe, and an electronic unit. The active probe includes a first electrode and a second electrode isolated from each other by a first insulating layer, the first and second electrodes are preferably in contact with the fluid mixture. The reference probe is formed from an internal wall of the conductive tubing contacting the fluid mixture and isolated from the reference probe by a second insulating layer. The electronic unit is coupled to the first and second electrodes, and to the reference probe, the electronic unit preferably includes a capacitance module for measuring a capacitance between the active probe and the reference probe.

Water fraction measuring sensor and method having capacitance module

An instrumented tubing for determining a contribution of a given zone to fluid production of a reservoir, the instrumented tubing including a tube having an open end for collecting a fluid flowing from the given zone and a port for coupling the tube to a production tubing for letting the collected fluid flow into the production tubing, and a sensor for measuring a parameter of the collected fluid, wherein the sensor is connected to an electronic unit for determining the contribution of the given zone to the fluid production of the reservoir based on said measured parameter.

Instrumented tubing and method for determining a contribution to fluid production

An inductive coupler assembly for use in a downhole environment and related methods are described. An example indicative coupler assembly includes a first inductive coupler having first and second magnetically coupled coils and a second inductive coupler having third and fourth magnetically coupled coils. The first and third coils are coupled to a first pair of signal lines and the second and fourth coils are coupled to a second pair of signal lines. The first inductive coupler is to magnetically convey a differential communications signal between the first and second pairs of signal lines, and the second inductive coupler is to magnetically convey a common mode power signal between the first and second pairs of signal lines.

Downhole inductive coupler assemblies

The invention provides a method of receiving and/or transmitting information in a well drilled in a geological formation between a first location and a second location, the well comprising a casing communicating with the geological formation. The method comprises placing a first transducer at a first location, placing a second transducer at a second location. Transmitting an electric signal between the first and second transducers.

Method and apparatus for transmitting or receiving information between downhole equipment and surface

The disclosure provides a sensor cartridge that includes a protective housing that is resistant to downhole oilfield environment; a sensor within the protective housing able to measure a parameter of the down-hole oilfield environment; an attaching device to interconnect with another sensor cartridge and/or a hub; a data communication unit within the protective housing, the data communication unit providing wireless communication of the measured parameter to the other sensor cartridge and/or the hub when interconnected with the other sensor cartridge and/or the hub; and a power unit within the protective housing, the power unit providing power supply to sensor and/or data communication unit.

Contact-less sensor cartridge

A device and method for measuring a fluid flow velocity and direction. The device includes: a modulator for modulating an incident signal from a fiber optical arrangement. The modulator includes an encoder resulting in a modulated signal having at least a first portion, a second portion and a third portion for each complete rotation of the encoder. The device further includes a processor for determining the fluid flow velocity and direction based on at least the first portion, the second portion and the third portion of the modulated signal. The method includes modulating an incident beam to have a first portion, a second portion and a third portion for each rotation of an encoder and processing the modulated signal to determine a fluid flow velocity and direction.

Device for measuring a fluid flow velocity and direction

A flow rate of a fluid flowing in a tubing is determined using a flow meter. The flow meter measures a value related to the flow rate. The tubing has a valve for controlling the fluid flowing through the flow meter. The method of determination of the flow rate includes closing the valve and measuring a first zero flow rate value at a first time and a second zero flow rate value at a second time, estimating an error of the value measurement based on the first and second zero flow rate values, opening the valve and measuring value of the flowing fluid, applying an error correction to the measured value of the flowing fluid, and calculating a corrected flow rate based on the corrected value of flowing fluid.

Method of dynamically correcting flow rate measurements

The present disclosure discloses a subsurface formation fluids monitoring system, and a method thereof, integrated on a casing or tubing sub having an inner and an outer surface and defining an internal cavity. The system also includes a sensor mounted on the outer surface and wireless data communication between an interrogating tool located in the internal cavity and the sensor. The system also able to provide fluid communication between the sensor and fluids of the formation with a tool that can be moved through the well to a number of locations.

Deployment of underground sensors in casing

Growing community of inventors

St. Cloud, France

Christian Chouzenoux