Phillip E Pruett

US Patent:

6496625, Dec 17, 2002

Filed:

Feb 3, 2000

Appl. No.:

09/497236

Inventors:

Kenneth Falkowich - Old Saybrook CT
Christopher Chestnut - Ellington CT
Christopher Chipman - Scotland CT
Thomas Engel - East Hampton CT
Robert Markoja - Cheshire CT
Phillip E. Pruett - Wallingford CT
Robert A. Rubino - Tolland CT
Jeffrey Bonja - Avon CT
Edward Laffitte - Middletown CT

Assignee:

Weatherford/Lamb, Inc. - Houston TX

International Classification:

G02B 644

US Classification:

385100

Abstract:

A fiber optic transmission cable fiber protector includes a splice tube positioned over the ends of a pair of fiber optic cables having an outer capillary tube containing at least one optical fiber within an inner capillary tube. The optical fiber protector includes a pair of optical fiber strain relief mechanism positioned near the ends of the optical fibers; the strain relief mechanisms are captured within a heat sink tube that is inserted into each end of the outer capillary tubes. The splice tube is welded to the outer capillary tubes. Heat generated by the welding process dissipated by the heat sink and gases generated during the welding process are vented through a hole in the outer capillary tube into the optical fiber splice area. In an alternate embodiment a weld coupling is welded to each end of the splice tube and is further welded to the outer capillary tubes. A sealing mechanism is positioned on the inner capillary tubes within the outer capillary tubes forming a seal therebetween.

US Patent:

58921761, Apr 6, 1999

Filed:

Nov 5, 1996

Appl. No.:

8/747005

Inventors:

Mitchell Findlay - Whittier CA
Phillip E. Pruett - Bakersfield CA

International Classification:

H01B 702

US Classification:

174115

Abstract:

A cable for recording conditions in a well bore, the cable including a tube having a generally smooth outer surface and an inner surface defining an elongated, uninterrupted opening extending throughout the length of the tube, at least one fiber optic, disposed within the opening of the tube, the fiber optic extending the length of the tube, an electrical conductor disposed within the opening of the tube, the electrical conductor extending the length of the tube, and insulating material disposed within the tube, the insulating material encapsulating the fiber optic and electrical conductor so as to form a core, wherein the core is of substantially smaller diameter than the opening to permit thermal expansion of the fiber optic, the conductor and the insulating material. The size of the tube and the core may be selected such that there is an annulus between the inside surface of the tube and the outside surface of the core, the annulus providing a flowpath extending the length of the tube.

US Patent:

62063014, Mar 27, 2001

Filed:

Jul 15, 1999

Appl. No.:

9/353421

Inventors:

Phillip E. Pruett - Bakersfield CA

International Classification:

B05B15/02

US Classification:

239119

Abstract:

A reversible spray nozzle for use in a fluid dispersing system which consists of a nozzle portion defining a cylindrical channel therewithin, the nozzle portion having opposing ends, the opposing ends threaded for communicating with the fluid dispersing system, the cylindrical channel extending the length of the nozzle portion, the cylindrical channel for receiving a cylindrical flow tube; and the flow tube defining a delivery channel, the delivery channel extending the length of the flow tube, the delivery channel for providing a flow path for a fluid. The spray nozzle can be configured such that the flow tube is slideably disposed within the nozzle portion, and where the length of the flow tube is less than half of the length of the cylindrical channel of the nozzle portion.

US Patent:

D3362841, Jun 8, 1993

Filed:

Nov 14, 1991

Appl. No.:

7/792185

Inventors:

Phillip E. Pruett - Bakersfield CA
Douglas W. Pruett - Bakersfield CA

Assignee:

Pruett Industries, Inc. - Bakersfield CA

US Classification:

D13154

US Patent:

57237816, Mar 3, 1998

Filed:

Aug 13, 1996

Appl. No.:

8/696325

Inventors:

Phillip E. Pruett - Bakersfield CA
Mitchell Findlay - Whittier CA

International Classification:

E21B 4710

US Classification:

7315218

Abstract:

The present invention generally pertains to apparatus and a method for continuously injecting a tracer in a borehole to thereby enable continuously measuring the flow of effluents in the borehole, i. e. either in an injection well or production well, of an oil, gas or geothermal field. The apparatus and method comprises positioning capillary tubing within the borehole, the tubing having a flowpath extending continuously from the surface to a desired depth, the capillary tubing having at least one sensor suspended in the borehole at the desired depth, injecting a tracer element into the tube from a pressurized source at the surface, releasing the tracer element at the desired depth and detecting the presence of the tracer.

US Patent:

62788116, Aug 21, 2001

Filed:

Sep 20, 1999

Appl. No.:

9/399504

Inventors:

Arthur D. Hay - Cheshire CT
Alan D. Kersey - South Glastonbury CT
Robert J. Maron - Cromwell CT
Phillip Edmund Pruett - Wallingford CT
Mark R. Fernald - Enfield CT
Guy A. Daigle - Plainville CT
F. Kevin Didden - Wallingford CT
Allen R. Davis - Glastonbury CT
Michael A. Davis - Glastonbury CT
Timothy J. Bailey - Longmeadow MA

International Classification:

G02B 600

US Classification:

385 13

Abstract:

A fiber optic Bragg grating pressure sensor particularly suited for measuring ambient pressure of a fluid includes a pressuring detecting device 12 such as a glass element whose elastic deformation is proportional to applied pressure. An optical fiber 28 with an integral first grating 33 is wrapped at least once around the device and has at least a portion of its length fused to the device 12 such that elastic deformation of the device 12 generates a corresponding axial strain in the fiber 28 and/or the grating 33 and thus a corresponding change of the fiber length and/or characteristic reflectance wavelength of the grating 33. A second grating 35 may be formed near the pressure detecting device 12 so as to sense ambient temperature but not be affected by deformation of the device 12 for temperature compensation. Also, the fiber 28 may have more than one grating or be doped at least between a pair of gratings 160,162, to form a fiber laser or a DFB fiber laser which lasing wavelength changes with changing pressure.

US Patent:

58774262, Mar 2, 1999

Filed:

Jun 27, 1997

Appl. No.:

8/883858

Inventors:

Arthur D. Hay - Cheshire CT
Robert J. Maron - Cromwell CT
James R. Dunphy - South Glastonbury CT
Phillip Edmund Pruett - Bakersfield CA

Assignee:

CiDRA Corporation - Wallingford CT

International Classification:

G01L 900

US Classification:

73733

Abstract:

A Bourdon tube pressure gauge is mounted for sensing the pressure of a system. The Bourdon tube is connected to at least one optical strain sensor mounted to be strained by movement of the Bourdon tube such that when the Bourdon tube is exposed to the pressure of the system, movement of the tube in response to system pressure causes a strain in the optical sensor. The optical sensor is responsive to the strain and to an input optical signal for providing a strain optical signal which is directly proportional to the pressure. A reference or temperature compensation optical sensor is isolated from the strain associated with the pressure of the system and is responsive to temperature of the system for causing a temperature-induced strain. The reference optical sensor is responsive to the temperature induced strain and the input optical signal for providing a temperature optical signal which is directly proportional to the temperature of the system. The temperature optical signal is provided for temperature compensation of the strain optical signal.

US Patent:

6305227, Oct 23, 2001

Filed:

Sep 2, 1998

Appl. No.:

9/145621

Inventors:

Jian-Qun Wu - Houston TX
Kevin F. Didden - Wallingford CT
Alan D. Kersey - S. Glastonbury CT
Phillip E. Pruett - Bakersfield CA
Arthur D. Hay - Cheshire CT

Assignee:

CiDRA Corporation - Wallingford CT

International Classification:

G01L 900

US Classification:

73705

Abstract:

A quartz sensing system includes a quartz sensor, an electromechanical converter, an optical source, an optical fiber and a signal processor. The quartz sensor responds to a pressure, and further responds to an electrical power signal, for providing a quartz sensor electrical signal containing information about the pressure. The electromechanical converter responds to the quartz sensor signal, for providing an electromechanical converter force containing information about the sensed voltage or current signal. The optical source for provides an optical source signal. The optical fiber responds to the electromechanical converter force, for changing an optical parameter or characteristic of the optical source signal depending on the change in length of the optical fiber and providing an electromechanical converter optical signal containing information about the electromechanical converter force. The signal processor responds to the electromechanical converter optical signal, for providing a signal processor signal containing information about the pressure. In one embodiment, the electromechanical converter includes a piezoelectric or magnetostrictive transducer that responds to the quartz sensor signal, for providing an piezoelectric or magnetostrictive transducer force containing information about the quartz sensor signal.