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1. WO2000036386 - APPARATUS AND METHOD FOR PROTECTING DEVICES, ESPECIALLY FIBRE OPTIC DEVICES, IN HOSTILE ENVIRONMENTS

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Publication Number WO/2000/036386
Publication Date 22.06.2000
International Application No. PCT/US1999/030282
International Filing Date 17.12.1999
IPC
E21B 47/01 2012.1
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
47Survey of boreholes or wells
01Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 47/06 2012.1
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
47Survey of boreholes or wells
06Measuring temperature or pressure
E21B 47/12 2012.1
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
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
G01D 5/28 2006.1
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; 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
26using optical means, i.e. using infra-red, visible or ultra-violet light
28with deflection of beams of light, e.g. for direct optical indication
G01K 11/32 2006.1
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
11Measuring temperature based on physical or chemical changes not covered by group G01K3/, G01K5/, G01K7/, or G01K9/202
32using changes in transmission, scattering or fluorescence in optical fibres
G01L 11/02 2006.1
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
11Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/ or G01L9/175
02by optical means
CPC
E21B 47/017
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
01Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
017Protecting measuring instruments
E21B 47/06
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
06Measuring temperature or pressure
E21B 47/135
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
G01D 5/28
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
28with deflection of beams of light, e.g. for direct optical indication
G01K 11/3206
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
11Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
32using changes in transmittance, scattering or luminescence in optical fibres
3206at discrete locations in the fibre, e.g. using Bragg scattering
G01L 11/025
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
11Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
02by optical means
025using a pressure-sensitive optical fibre
Applicants
  • CHEVRON U.S.A. INC. [US]/[US] (AllExceptUS)
  • SENSOR DYNAMICS LIMITED [GB]/[GB] (AllExceptUS)
  • UNIVERSITY OF SOUTHAMPTON [GB]/[GB] (AllExceptUS)
  • CRAWLEY, C., M. [US]/[US] (UsOnly)
  • KLUTH, E., L., E. [GB]/[GB] (UsOnly)
  • RUTT, H., N. [GB]/[GB] (UsOnly)
  • CLOWES, J., R. [GB]/[GB] (UsOnly)
  • VARNHAM, M.P. [GB]/[GB] (UsOnly)
Inventors
  • CRAWLEY, C., M.
  • KLUTH, E., L., E.
  • RUTT, H., N.
  • CLOWES, J., R.
  • VARNHAM, M.P.
Agents
  • HOOK, Fred, E.
Priority Data
9827735.317.12.1998GB
9900793.215.01.1999GB
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS AND METHOD FOR PROTECTING DEVICES, ESPECIALLY FIBRE OPTIC DEVICES, IN HOSTILE ENVIRONMENTS
(FR) APPAREIL ET PROCEDE DE PROTECTION DE DISPOSITIFS, NOTAMMENT DES DISPOSITIFS A FIBRES OPTIQUES, DANS DES MILIEUX HOSTILES
front page image
Abstract
(EN) The present invention relates to protecting optical devices, such as an optical fibre sensor connected in series with a cable, from a hostile environment, such as encountered when making measurements in oil and gas wells. A liquid can protect the optical device. Packaging an optical fibre sensor inside a capillary containing the liquid can provide this protection. The liquid can be liquid metal, gel, inks, grease or oil. The liquid metal can be gallium or indium, or an alloy that includes indium and/or gallium. The grease can contain lithium, molybdenum, or synthetics, or be synthetic grease. The liquid can contain other components such as a scavenger or getter for molecules and/or ions.
(FR) L'invention concerne la protection de dispositifs optiques, tels qu'un capteur à fibres optiques monté en série avec un câble, d'un milieu hostile tels que ceux rencontrés lors de prises de mesures dans des puits de pétrole et de gaz. Un liquide peut protéger le dispositif optique. Il est possible de protéger un capteur à fibres optiques en emballant celui-ci dans un capillaire contenant ledit liquide. Ce liquide peut être un métal liquide, du gel, de l'encre, de la graisse, ou de l'huile. Ledit métal liquide peut être du gallium ou de l'indium, ou un alliage contenant de l'indium et/ou du gallium. La graisse peut contenir du lithium, du molybdène, ou des produits synthétiques, ou elle peut être de la graisse synthétique. Ledit liquide peut contenir d'autres composés tels qu'un épurateur ou un getter de molécules et/ou d'ions.
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