Christopher E Reed

US Patent:

8294591, Oct 23, 2012

Filed:

Mar 29, 2010

Appl. No.:

12/748555

Inventors:

Christopher Paul Reed - West University Place TX, US
David Kirk Conn - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V 3/00
H03M 7/00

US Classification:

3408554, 341 50

Abstract:

A digital signal processing receiver, a system and/or a method identifies a decoded signal. The receiver, system and/or method extract at least one sequence of one or more symbols from a digital incoming signal to generate an extracted sequence of symbols. The receiver, system and/or method generate a first result based on a comparison of the extracted sequence of symbols and one or more possible matching digital signals of a set of idealized model data according to a Bayesian probability theory. The receiver, system and/or method generates a second result based on a comparison of an equalized version of the digital incoming signal and the one or more possible matching digital signals. The receiver, system and/or method generates a third result based on a comparison of the extracted sequence of symbols and one or more possible matching digital signals of a modified set of idealized model data. The receiver, system and/or method compare the first, second and third results to determine an idealized result, and identify a decoded signal for the actual incoming signal based on the idealized result.

US Patent:

8302685, Nov 6, 2012

Filed:

Jan 30, 2009

Appl. No.:

12/363092

Inventors:

Sandra Reyes - Issy les Moulineaux, FR
Remi Hutin - Bures sur Yvette, FR
Robert W. Tennent - Asker, NO
Christopher Paul Reed - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 47/00

US Classification:

16625001, 3408531, 3408554, 367 81

Abstract:

A technique for communicating data within a wellbore is provided. In one embodiment, a method includes receiving digital data and encoding the digital data into symbols each representative of one or more data bits of the digital data. In this embodiment, the method also includes modulating the phase of an acoustic wave within the wellbore to represent the plurality of symbols, wherein modulating the phase of an acoustic wave includes changing the phase of the acoustic wave such that the acoustic wave includes smooth phase transitions between successive phases representative of the plurality of symbols. Various additional methods, systems, and devices are also provided.

US Patent:

20150034165, Feb 5, 2015

Filed:

Jul 29, 2014

Appl. No.:

14/445062

Inventors:

- Sugar land TX, US
Christopher Paul Reed - West University Place TX, US
Andrew J. Parry - Bourg la Reine, FR
Alain P. Dorel - Novosibirsk, RU
Staffan Eriksson - Goteborg, SE
Jonathan James - Gloucester, GB
Stuart Alan Kolbe - North Somerset, GB

International Classification:

F16L 55/027

US Classification:

137 1, 138 40

Abstract:

A fluidic modulator having a body forming a flow aperture between an inlet and an outlet, the flow aperture having a nominal diameter less than the inlet diameter and the outlet diameter whereby the flow aperture provides a constriction to a fluid flowing axially from the inlet to the outlet, and a moveable portion operable to alter the flow aperture. To create a modulated pressure pulse the moveable portion may be for example radially shifted in the flow aperture, rotated in the flow aperture, or the rotation of the moveable portion in the flow aperture may be controlled.

US Patent:

20150034385, Feb 5, 2015

Filed:

Jul 29, 2014

Appl. No.:

14/445063

Inventors:

- Sugar land TX, US
Jonathan James - Gloucester, GB
Christopher Paul Reed - Houston TX, US
David Kirk Conn - Houston TX, US

International Classification:

E21B 17/00
E21B 47/12
E21B 34/10

US Classification:

175 48

Abstract:

A fluidic modulator in accordance to an aspect includes a body forming a flow aperture between an inlet and an outlet, the flow aperture providing a constriction to a fluid flowing axially from the inlet to the outlet, and a moveable element having a shaft portion disposed through the body and a tip end selectively positionable in the flow aperture to alter the flow aperture.