Christopher A Harrison

US Patent:

8166812, May 1, 2012

Filed:

Oct 14, 2009

Appl. No.:

12/578587

Inventors:

Emmanuel Desroques - Paris, FR
Sophie Nazik Godefroy - Cairo, EG
Anthony Robert Holmes Goodwin - Sugar land TX, US
Christopher Harrison - Auburndale MA, US
Kai Hsu - Sugar Land TX, US
Noriyuki Matsumoto - Yokohama, JP

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 49/08
G01N 11/10
G01N 29/00

US Classification:

7315228, 73 5441, 73 6453

Abstract:

Vibrating wire viscometers are disclosed. An example apparatus to determine the viscosity of a downhole fluid is described, the apparatus including a wire to be immersed in a downhole fluid, to vibrate when an alternating current is applied to the wire within a magnetic field, and to generate an electromotive force when vibrating within the magnetic field, the wire comprising a first resistance. The apparatus further includes a nulling circuit coupled to the wire, wherein the nulling circuit comprises a second resistance that is selectable to be substantially equal to the first resistance, and an analyzer coupled to the wire and the nulling circuit to determine the first resistance, the second resistance, and a viscosity of the downhole fluid based on the first and second resistances, at least one characteristic of the wire, and the electromotive force.

US Patent:

8484003, Jul 9, 2013

Filed:

Sep 3, 2009

Appl. No.:

12/553967

Inventors:

Kai Hsu - Sugar Land TX, US
Christopher Harrison - Auburndale MA, US
Matthew T. Sullivan - Westwood MA, US
Michael Stangeland - Tokyo, JP
Anthony Smits - Kawasaki, JP
Anthony Robert Holmes Goodwin - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G06G 7/48

US Classification:

703 10, 703 2, 703 6

Abstract:

Example methods, apparatus and articles of manufacture to process measurements of wires vibrating in fluids are disclosed. A disclosed example apparatus includes a downhole assembly and a surface assembly. The downhole assembly including a sensor to measure a waveform representative of a motion of a wire vibrating within a fluid at a downhole location in a wellbore, a waveform modeler to compute a model parameter from the measured waveform, and a first telemetry module to transmit the computed model parameter to a surface location. The surface assembly including a second telemetry module to receive the computed model parameter from the downhole assembly, and a viscosity analyzer to estimate a viscosity of the fluid from the computed model parameter.

US Patent:

20220403737, Dec 22, 2022

Filed:

Aug 18, 2022

Appl. No.:

17/820626

Inventors:

- Sugar Land TX, US
Thomas Pfeiffer - Katy TX, US
Vinay K. Mishra - Katy TX, US
German Garcia - Katy TX, US
Christopher Harrison - Auburndale MA, US
Oliver Mullins - Houston TX, US

International Classification:

E21B 49/08
G01N 33/28
E21B 49/10

Abstract:

Methods and downhole tools for operation within in a wellbore that extends into a subterranean formation. The operation includes simultaneously causing a change in a first parameter of fluid drawn into the downhole tool from the formation and determining a change in a second parameter of the fluid relative to the change in the first parameter. A third parameter of the fluid is determined based on the first and second parameter changes.

US Patent:

20210263008, Aug 26, 2021

Filed:

May 13, 2021

Appl. No.:

17/319857

Inventors:

- Sugar Land TX, US
Ryota Tonoue - Kanagawa-ken, JP
Hua Chen - Sugar Land TX, US
Christopher Harrison - Auburndale MA, US
Kamal Kader - Tokyo, JP
Youxiang Zuo - Burnaby, CA
Adriaan Gisolf - Bucharest, RO
Cosan Ayan - Istanbul, TR
Michael Mallari Toribio - Manila, PH
Chetankumar Natwarlal Desai - Sugar Land TX, US
Oliver Clinton Mullins - Houston TX, US
Matthew T. Sullivan - Westwood MA, US
Elizabeth Smythe - Cambridge MA, US

International Classification:

G01N 33/28
E21B 47/06
E21B 49/00
E21B 49/08
G01N 7/00
E21B 47/00

Abstract:

Embodiments of the disclosure can include systems, methods, and devices for determining saturation pressure of an uncontaminated fluid. A technique facilitates fluid analysis in situ at a downhole location. Downhole saturation pressure measurements and downhole OBM filtrate contamination of a contaminated fluid may be obtained and a relationship may be determined between the saturation pressure measurements and OBM filtrate contamination. The relationship may be extrapolated to zero OBM filtrate contamination to determine the saturation pressure of the uncontaminated fluid. According to an embodiment, a sample of oil is obtained at the downhole location from oil in a reservoir. A downhole sampling system is used to determine whether a sample has contamination and other selected characteristics of the sample. The data obtained may be processed to provide a formation volume factor of the oil.

US Patent:

20190128117, May 2, 2019

Filed:

Oct 25, 2018

Appl. No.:

16/170149

Inventors:

- Sugar Land TX, US
Thomas Pfeiffer - Katy TX, US
Vinay K. Mishra - Katy TX, US
German Garcia - Katy TX, US
Christopher Harrison - Auburndale MA, US
Oliver Mullins - Houston TX, US

International Classification:

E21B 49/08
G01N 33/28

Abstract:

Methods and downhole tools for operation within in a wellbore that extends into a subterranean formation. The operation includes simultaneously causing a change in a first parameter of fluid drawn into the downhole tool from the formation and determining a change in a second parameter of the fluid relative to the change in the first parameter. A third parameter of the fluid is determined based on the first and second parameter changes.