Schlumberger Technology Corporation

Sebastien Isambert

Christian Stoller

Joseph P Varkey

Michael Lynn Evans

Maria Auxiliadora Grisanti

William Brian Underhill

David Geehyun Kim

Vincent Chatelet

Paul Wanjau

Didier Fouillou

Fabio Cecconi

Francois Chevillard

Ahmed Amine Mahjoub

Nicolas Roumilly

Emmanuel Fayeulle

Paul Leducq

A centralizer operable to connect with and centralize a downhole tool within a tubular string within a wellbore and to facilitate reception of electromagnetic signals transmitted through the Earth. The centralizer has a body, a first contacting member electrically connected to the body and extending radially away from the body such that the first contacting member contacts an inner surface of the tubular string to electrically connect the tubular string to the body, and a second contacting member electrically insulated from the body and extending radially away from the body such that the second contacting member contacts the inner surface of the tubular string to centralize at least a portion of the body within the tubular string.

Downhole centralizer

A system includes a cable and at least one coupling device installed along the cable. The coupling element has one or more through cavities for receiving the cable, and configured to hold the cable when disposed in the cavity against a surface of the wellbore.

Systems and methods for holding wireline device against well

A downhole tool operable for conveyance within a wellbore extending into a subterranean formation, and for obtaining one or more measurements of the subterranean formation, wherein the downhole tool comprises a sensor, a pressure housing containing the sensor and mounted on an external surface of the downhole tool, and a sliding stabilizer covering the pressure housing.

Sensor standoff

Growing community of inventors

Clamart, France

Sebastien Isambert