Schlumberger Technology Corporation

Eric Veignat

Philippe Gambier

Fadhel Rezgui

Emmanuel Rioufol

Ian D Bryant

Elizabeth B Dussan V

Jean-Pierre R Delhomme

Jean-Pierre Chyzak

Ian Raw

Philippe Souhaite

Jose Teixeira

Christian Jennevin

Francedillaois Hecquet

A well () for producing water is characterized in that it includes a network of widely spaced electrodes () electrically coupled with measurement means () or with electric current generation means (). By utilizing a measurement result, the progression of a salt water front heading for the well () may be detected.

System for monitoring salinity in a water well

To acquire data such as the flow rate of various phases of a fluid flowing in a hydrocarbon well () in production, in particular in an inclined or horizontal portion of the well, both the local speed of the fluid and the proportions of the various phases are determined in each of at least two distinct regions of the well that are not in alignment with one another parallel to the axis of the well. The regions in which the measurements are taken are advantageously distributed in a vertical plane containing the axis of the well when the well is inclined or horizontal.

Method and apparatus for acquiring data in a hydrocarbon well in production

A centralizer () for position a casing () in a conduit () passing through underground formations includes measurement means () such as an electrode for deriving at least one representative parameter of the formations.

Centralizer including measurement means

The invention provides a support for measurement means for monitoring and/or studying a fluid reservoir () through which at least one well () passes, said support comprising: a cylindrical tube (); and a jacket () surrounding said cylindrical tube. According to the invention, said jacket () has at least one recess () for receiving means () for measuring a characteristic representative of said reservoir and/or connection means () leading to power supply and measurement-processing means (). The invention also provides a measurement device for monitoring and/or studying a fluid reservoir () through which at least one well () passes, said device comprising: power supply and measurement processing means (); means () for measuring a characteristic representative of said reservoir, and connection means () connecting said measurement means () to said power supply and measurement processing means (). According to the invention, said device () being characterized in that it further comprises at least one support () according to any preceding claim, with said measurement means () and said connection means () being housed in the recesses () in the jacket () of said support.

Measurement device and support for use in a well

A method for producing, in a hydrocarbon well, a signal indicative of a local flow parameter of a multiphase fluid, includes the steps of placing at least one local sensor in the fluid and producing a signal whose level is characteristic of the phase in which the sensor is immersed, the signal being generated at a spike whose radius of curvature is less than 100 microns. The method is applicable to determining hold-ups of different phases of the fluid.

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Sugar Land, TX, United States of America

Eric Veignat