Schlumberger Technology Corporation

Eugene Janssen

Anthony Frank Veneruso

Krishnamurthy Ganesan

Christian Chouzenoux

Nicholas J Heaton

Vassilis Varveropoulos

Frederic Pauchet

Derek Ingraham

John A Booker

Lahcen Garando

Bernard Parmentier

Philippe R Parent

Véronique Nouaze

Diogenes David Molina

Sylvain Durisotti

François Barbara

A technique includes deploying an untethered object though a passageway of a tubular member; and acquiring a plurality of measurements that represent an environment of the tubular member as the object is being communicated through the passageway. The technique includes cross-correlating the plurality of measurements and using results of the cross-correlating to identify at least one feature of the tubular member.

Autonomous untethered well object

A method to calibrate a nuclear magnetic resonance tool is disclosed having steps of starting a nuclear magnetic resonance sequence from the nuclear magnetic resonance tool, disabling an active damping circuit in the nuclear magnetic resonance tool, collecting auxiliary calibration data for the nuclear magnetic resonance tool, estimating a natural Q value for the nuclear magnetic resonance tool, determining an optimal active damping setting for the tool, deploying the optimal active damping setting for the tool, collecting nuclear magnetic resonance response data generated from the nuclear magnetic resonance sequence and calibrating the nuclear magnetic resonance data.

Variable damping control for nuclear magnetic resonance data acquisition system to enhance oilfield logging performance

A remotely deployed untethered device for actuation of a downhole application. The device may be equipped with inductive measurement capacity for interaction with a downhole well architecture. Such capacity affords the ability to trigger an actuation remotely at a site specific location in the well without further intervention relative surface equipment.

Remote downhole actuation device

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

Growing community of inventors

Sugar Land, TX, United States of America

Eugene Janssen