Schlumberger Technology Corporation

Gemalto Sa

Intelliserv, Inc.

Gemalto Inc.

Axalto Inc

Schlumberger Malco, Inc.

Axalto S.a.

Schlumberger Technologies, Inc.

Schlumberger Systemes

Schlumberger Well Services

Michael Andrew Montgomery

Scott Bates Guthery

Ksheerabdhi Krishna

Timothy J Wilkinson

Julius Kusuma

Simon James

Jean P Seydoux

HongQian Karen Lu

Mathew M Samuel

Radovan Rolovic

Gérard Daccord

Bertrand Du Castel

Desheng Zhang

Bernard Piot

Chanchai Poonpol

Jimmy Everett Neeley

David Lewis Lyon

Sylvain Jacques Prevost

Joachim Sihler

Joel Rondeau

Asad Mahboob Ali

Raphael Gadot

Shyam B Mehta

Christopher C Bogath

Yannick Burianne

Jean-Charles Rinaldi

Jason Braden

Frederic Latrille

Randall LeBlanc

Anshuman Sinha

Francois Clouzeau

Brian E Boling

Jonathan W Brown

Laurent Carteron

Danny N Kumamoto

J&eacute;r&ocirc;me Sion

Federic Latrille

Jean-Claude Perrin

A method for transferring data between a surface computer and a downhole assembly may include connecting the surface computer to a single data port in the downhole assembly, transferring data between the surface computer and a first while drilling tool through the data port, and transferring data between the surface computer and a second while drilling tool through the data port.

Method and apparatus for downloading while drilling data

A method and apparatus for making real-time measurements of downhole properties during cement plug placement. A wired placement conduit is lowered downhole releasing a sensor package. The sensor package is capable of measuring downhole properties in real-time in the period while the cement plug sets.

Methods and apparatus for improved cement plug placement

An integrated circuit card is used with a terminal. The integrated circuit card includes a memory that stores an interpreter and an application that has a high level programming language format. A processor of the card is configured to use the interpreter to interpret the application for execution and to use a communicator of the card to communicate with the terminal.

Computer program product containing instructions for providing a processor the capability of executing an application derived from a compiled form

The present disclosure relates to a method to determine a clock signal when separate clocks are used. In one embodiment, a disciplined clock system comprising an update subsystem and a synthesis subsystem is provided. A first clock phase estimate is provided to the update subsystem and used, along with the update subsystem, to determine a frequency offset estimate and a phase offset estimate. The clock signal is determining using the frequency offset estimate, the phase offset estimate, and the synthesis subsystem. Alternatively, two clocks can be synchronized by generating a signal associated with a first clock; modulating the signal; transmitting the modulated signal; receiving the modulated signal by a receiver associated with a second clock; correlating the received signal; determining the time of arrival of the received signal; determining the time difference between the two clocks; and synchronizing the two clocks.

Synchronization between devices

A method and apparatus for making real-time measurements of downhole properties during cement plug placement. A wired placement conduit () is lowered downhole releasing a sensor package (). The sensor package is capable of measuring downhole properties in real-time in the period while the cement plug sets.

A method for synchronizing a clock in a device at the Earth's surface with a device disposed in a wellbore includes generating a time datum for a signal generated at at least one of the surface and in the wellbore proximate an end of the pipe string. A time delay is determined between detection of the signal at the at least one repeater and retransmission of the signal from the at least one repeater. The time datum is appended with a signal corresponding to the time delay. The retransmitted signal is detected at the other of proximate the end of the pipe string and at the surface.

Methods for clock synchronization in wellbore instruments

A system transmits a wireless power transmission from a bottom hole assembly of a drill string. The system has a downhole component having a wireless power transmitter adapted to wirelessly transmit at least one wireless power transmission and a wireless power receiver adapted to receive the at least one wireless power transmission.

Systems and methods for providing wireless power transmissions and tuning a transmission frequency

A system and method for facilitating the formation of electrical connections between wired drill pipes is provided. Wired drill pipes comprise connection ends that each have a plurality of independent conductors. The independent conductors are arranged to enable a plurality of conductive connections between adjacent wired drill pipes when the wired drill pipes are physically connected.

System and method for connecting wired drill pipe

A system and method for peer-to-peer communication between a slave device and network resources wherein the slave device, for example, a smart card, communicates using a protocol designed to allow the smart card to communicate over a half-duplex serial communications link while appearing to applications and network nodes as being a full-fledged network node in a manner that conserves power so as to be suitable for deployment on small portable devices.

System and method for data communications allowing slave device to be network peers

Using a high level programming language with a microcontroller

Growing community of inventors

Cedar Park, TX, United States of America

Michael Andrew Montgomery