Processing

Please wait...

Settings

Settings

Goto Application

1. WO2015130300 - INTERFEROMETRIC HIGH FIDELITY OPTICAL PHASE DEMODULATION

Publication Number WO/2015/130300
Publication Date 03.09.2015
International Application No. PCT/US2014/019232
International Filing Date 28.02.2014
IPC
E21B 49/08 2006.1
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
49Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
08Obtaining fluid samples or testing fluids, in boreholes or wells
G01N 21/17 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
CPC
E21B 47/06
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
06Measuring temperature or pressure
E21B 47/07
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
06Measuring temperature or pressure
07Temperature
E21B 47/135
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
12Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
13by electromagnetic energy, e.g. radio frequency
135using light waves, e.g. infrared or ultraviolet waves
E21B 47/14
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
12Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
14using acoustic waves
G01D 5/35306
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
26characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light
32with attenuation or whole or partial obturation of beams of light
34the beams of light being detected by photocells
353influencing the transmission properties of an optical fibre
35306using an interferometer arrangement
G01J 2009/0226
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
9Measuring optical phase difference
02by interferometric methods
0226Fibres
Applicants
  • HALLIBURTON ENERGY SERVICES, INC. [US]/[US]
Inventors
  • BARFOOT, David, A.
Agents
  • KRUEGER, Daniel, J.
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) INTERFEROMETRIC HIGH FIDELITY OPTICAL PHASE DEMODULATION
(FR) DÉMODULATION DE PHASE OPTIQUE HAUTE FIDÉLITÉ INTERFÉROMÉTRIQUE
Abstract
(EN) An illustrative interferometric system with high-fidelity optical phase demodulation includes a receiver having a fiberoptic coupler that produces optical mterferometry signals having mutual phase separations of 120° and balanced photo- detectors that each produce an electrical difference signal based on a respective pair of said optical mterferometry signals. The system further includes circuitry that converts the electrical difference signals into measurements of an interferometric phase.
(FR) L'invention concerne un système interférométrique, donné à titre d'exemple, ayant une démodulation de phase optique haute fidélité, ledit système comprenant un récepteur ayant un coupleur de fibres optiques qui produit des signaux interférométriques optiques ayant des séparations de phase mutuelles de 120° et des photo-détecteurs équilibrés qui produisent chacun un signal de différence électrique sur la base d'une paire respective desdits signaux interférométriques optiques. Le système comprend en outre un ensemble de circuits qui convertit les signaux de différence électrique en mesures d'une phase interférométrique.
Related patent documents
NO20160943This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.
SA516371566This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.
Latest bibliographic data on file with the International Bureau