John Manuel Faustino

US Patent:

6501067, Dec 31, 2002

Filed:

Nov 29, 2000

Appl. No.:

09/726060

Inventors:

Richard T. Jones - Hamden CT
Allen R. Davis - Falls Church VA
John M. Faustino - East Haven CT

Assignee:

Weatherford/Lamb, Inc. - Houston TX

International Classification:

G01J 104

US Classification:

25022714, 25022716, 25022723, 25022725, 73705, 285 13

Abstract:

An apparatus for non-intrusively sensing fluid flow within a pipe is provided. The apparatus includes an array of sensors that include a plurality of optical fiber coils. The array of sensors senses the fluid flow inside the pipe. At least one optical reflective device is disposed between adjacent optical fiber coils. An isolation pad is disposed between each optical reflective device and the pipe.

US Patent:

6959604, Nov 1, 2005

Filed:

Aug 21, 2002

Appl. No.:

10/224821

Inventors:

Rebecca S. Bryant - Glastonbury CT, US
Daniel L. Gysling - Glastonbury CT, US
Charles R. Winston - Glastonbury CT, US
Allen R. Davis - Falls Church VA, US
John M. Faustino - Hamden CT, US

Assignee:

CiDRA Corporation - Wallingford CT

International Classification:

G01L009/00

US Classification:

73705

Abstract:

A fiber optic pressure sensor for measuring unsteady pressures within a pipe include at least one optical fiber disposed circumferentially around a portion of a circumference of the pipe, which provides an optical signal indicative of the length of the optical fiber. An optical instrument measures the change in length of the optical fiber to determine the unsteady pressure within the pipe. The pressure sensor may include a plurality of optical fiber sections disposed circumferentially around a portion of the circumference of the pipe that are optically connected together by optical fiber sections disposed axially along the pipe. The optical fiber sections may include fiber Bragg gratings having substantially the same or different reflection wavelengths to permit for example the sensors to be axially distributed along the fiber using wavelength division multiplexing and/or time division multiplexing.

US Patent:

6450037, Sep 17, 2002

Filed:

Jun 25, 1999

Appl. No.:

09/344093

Inventors:

Rebecca S. McGuinn - Middletown CT
Daniel L. Gysling - Glastonbury CT
Charles R. Winston - Glastonbury CT
Allen R. Davis - Glastonbury CT
John M. Faustino - Hamden CT

Assignee:

CiDRA Corporation - Wallingford CT

International Classification:

G01L 900

US Classification:

73705, 25022719, 25023119

Abstract:

Non-intrusive pressure sensors for measuring unsteady pressures within a pipe include an optical fiber wrapped in coils around the circumference of the pipe. The length or change in length of the coils is indicative of the unsteady pressure in the pipe. Bragg gratings impressed in the fiber may be used having reflection wavelengths that relate to the unsteady pressure in the pipe. One or more of sensors may be axially distributed along the fiber using wavelength division multiplexing and/or time division multiplexing.