CA2403616A1 - Narrow band infrared water fraction apparatus for gas well and liquid hydrocarbon flow stream use - Google Patents

Narrow band infrared water fraction apparatus for gas well and liquid hydrocarbon flow stream use Download PDF

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Publication number
CA2403616A1
CA2403616A1 CA002403616A CA2403616A CA2403616A1 CA 2403616 A1 CA2403616 A1 CA 2403616A1 CA 002403616 A CA002403616 A CA 002403616A CA 2403616 A CA2403616 A CA 2403616A CA 2403616 A1 CA2403616 A1 CA 2403616A1
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CA
Canada
Prior art keywords
phase
flow stream
water
water fraction
infrared light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002403616A
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French (fr)
Other versions
CA2403616C (en
Inventor
John S. Lievois
Roberto M. Lansangan
George J. Rodger
Arnold Del Toro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weatherford Artificial Lift Systems Inc
Original Assignee
Premier Instruments, Inc.
John S. Lievois
Roberto M. Lansangan
George J. Rodger
Arnold Del Toro
Weatherford Artificial Lift Systems, Inc.
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Filing date
Publication date
Application filed by Premier Instruments, Inc., John S. Lievois, Roberto M. Lansangan, George J. Rodger, Arnold Del Toro, Weatherford Artificial Lift Systems, Inc. filed Critical Premier Instruments, Inc.
Publication of CA2403616A1 publication Critical patent/CA2403616A1/en
Application granted granted Critical
Publication of CA2403616C publication Critical patent/CA2403616C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; viscous liquids; paints; inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
    • G01N33/2847—Water in oil
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; viscous liquids; paints; inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2823—Oils, i.e. hydrocarbon liquids raw oil, drilling fluid or polyphasic mixtures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Physical Water Treatments (AREA)

Abstract

A narrow band infrared water fraction meter detects a full water cut range of a liquid hydrocarbon flow stream and a flow stream of a gas well. The water fraction meter includes a light source probe for irradiating the flow stream with a narrow band of infrared light and a light detector probe for sensing attenuation of infrared light passed through the flow stream. For a narrow band of infrared light of a predetermined wavelength, there is a substantial difference in the absorption of infrared radiation between the gas and water content of a flow stream of a gas well. At such a wavelength, the narrow band of infrared light is substantially transmitted through gas content and liquid hydrocarbon content of the flow stream and substantially absorbed by water content of the flow stream. The water fraction meter thus differentiates water by treating liquid hydrocarbon like gas. Injection of corrosion/hydrate inhibiting chemicals into the flow stream can be controlled based on the attenuation of infrared light detected by the water fraction meter. In the case of a liquid hydrocarbon flow stream, the infrared light is substantially transmitted through its liquid hydrocarbon phase and substantially absorbed by its water phase. The water fraction meter also measures a water fraction of a multi-phase flow stream. The emitted infrared light is substantially transmitted through a first set of phases of the flow stream and substantially absorbed by a second set of phases of the flow stream.

Claims (20)

1. A method of measuring a water phase of a flow stream of a gas well, the flow stream including a gas phase, a liquid hydrocarbon phase and a water phase, the method comprising the steps of:
directing the flow stream to an infrared water fraction meter;
emitting a narrow band of infrared light by the infrared water fraction meter at a predetermined wavelength whereby the infrared light is substantially transmitted through the gas phase and the liquid hydrocarbon phase and substantially absorbed by the water phase; and detecting attenuation of the infrared light with the infrared water fraction meter whereby the attenuation indicates the water fraction of the flow stream.
2. The method of claim 1, further comprising the step of:
controlling injection of corrosion/hydrate inhibiting chemicals into the flow stream based on the attenuation of the infrared light detected in the detecting step.
3. The method of claim 1, wherein the water phase and the liquid hydrocarbon phase represent a relatively small volume percentage of the flow stream.
4. The method of claim 1, wherein the predetermined wavelength is approximately 1450 nanometers.
5. A method of measuring a water phase of a liquid hydrocarbon flow stream including a water phase and a liquid hydrocarbon phase, the method comprising the steps of:
directing the liquid hydrocarbon flow stream to an infrared water fraction meter;

emitting a narrow band of infrared light by the infrared water fraction meter at a predetermined wavelength whereby the infrared light is substantially transmitted through the liquid hydrocarbon phase and substantially absorbed by the water phase;
and detecting attenuation of the infrared light by the infrared water fraction meter whereby the attenuation indicates the water fraction of the liquid hydrocarbon flow stream.
6. The method of claim 5, wherein the liquid hydrocarbon phase comprises fuel.
7. The method of claim 5, further comprising the step of treating the liquid hydrocarbon flow stream to reduce the water fraction of the liquid hydrocarbon flow stream based on the attenuation of the infrared light detected in the detecting step.
8. A method of measuring a mufti-phase flow stream using an infrared water fraction meter, the method comprising the steps of:
directing a multi-phase flow stream to an infrared water fraction meter;
emitting a narrow band of infrared light by the infrared water fraction meter at a predetermined wavelength whereby the infrared light is substantially transmitted through a first set of phases of the multi-phase flow system and substantially absorbed by a second set of phases of the multi-phase flow stream; and detecting attenuation of the infrared light by the infrared water fraction meter whereby the attenuation indicates the water fraction of the multi-phase flow stream.
9. The method of claim 8, wherein the first set of phases comprises a water phase and the second set of phases comprises a liquid hydrocarbon phase and a gas phase.
10. The method of claim 8, wherein the first set of phases comprises a gas phase and a water phase and the second set of phases comprises an oil phase.
11. An infrared water fraction meter configured to measure a water phase of a flow stream of a gas well, the meter comprising:

a light source probe configured to emit a narrow band of infrared light at a predetermined wavelength to a flow stream including a gas phase, a liquid hydrocarbon phase and a water phase whereby the infrared light is substantially transmitted through the gas phase and the liquid hydrocarbon phase and substantially absorbed by the water phase; and a light detector probe configured to detect attenuation of the infrared light by the flow stream whereby the attenuation indicates the water fraction of the flow stream.
12. The water fraction meter of claim 11, wherein the predetermined wavelength is approximately 1450 nanometers.
13. An infrared water fraction meter configured to measure a water fraction of a multi-phase flow stream, the meter comprising:
a light source probe configured to emit a narrow band of infrared light at a predetermined wavelength to a multi-phase flow stream including a first set of phases and a second set of phases whereby the infrared light is substantially transmitted through the first set of phases and substantially absorbed by the second set of phases;
and a light detector probe configured to detect attenuation of the infrared light by the multi-phase flow stream whereby the attenuation indicates the water fraction of the multi-phase flow stream.
14. The water fraction meter of claim 13, wherein the first set of phases comprises a liquid hydrocarbon phase and a gas phase and the second set of phases comprises a water phase.
15. The water fraction meter of claim 13, wherein the first set of phases comprises a water phase and a gas phase and the second set of phases comprises an oil phase.
16. An infrared water fraction apparatus configured to measure a water phase of a flow stream of a gas well, the apparatus comprising:
a light emitter means for emitting a narrow band of infrared light at a predetermined wavelength to a flow stream including a gas phase, a liquid hydrocarbon phase and a water phase whereby the infrared light is substantially transmitted through the gas phase and the liquid hydrocarbon phase and substantially absorbed by the water phase; and a light detector means for detecting attenuation of the infrared light by the flow stream whereby the attenuation indicates the water fraction of the flow stream.
17. The water fraction apparatus of claim 16, wherein the predetermined wavelength is approximately 1450 nanorneters.
18. An infrared water fraction apparatus configured to measure a multi-phase flow stream, the apparatus comprising:
a light emitter means for emitting a narrow band of infrared light at a predetermined wavelength to the multi-phase flow stream including a first set of phases and a second set of phases whereby the infrared light is substantially transmitted through the first set of phases and substantially absorbed by the second set of phases; and a light detector means for detecting attenuation of the infrared light by the multi-phase flow stream whereby the attenuation indicates the water fraction of the multi-phase flow stream.
19. The water fraction apparatus of claim 18, wherein the first set of phases comprises a liquid hydrocarbon phase and a gas phase and the second set of phases comprises a water phase.
20. The water fraction apparatus of claim 18, wherein the first set of phases comprises a water phase and a gas phase and the second set of phases comprises an oil phase.
CA2403616A 2000-03-21 2001-03-15 Narrow band infrared water fraction apparatus for gas well and liquid hydrocarbon flow stream use Expired - Lifetime CA2403616C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/531,243 US6292756B1 (en) 1998-02-26 2000-03-21 Narrow band infrared water fraction apparatus for gas well and liquid hydrocarbon flow stream use
US09/531,243 2000-03-21
PCT/US2001/008354 WO2001071324A1 (en) 2000-03-21 2001-03-15 Narrow band infrared water fraction apparatus for gas well and liquid hydrocarbon flow stream use

Publications (2)

Publication Number Publication Date
CA2403616A1 true CA2403616A1 (en) 2001-09-27
CA2403616C CA2403616C (en) 2012-09-25

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CA2403616A Expired - Lifetime CA2403616C (en) 2000-03-21 2001-03-15 Narrow band infrared water fraction apparatus for gas well and liquid hydrocarbon flow stream use

Country Status (7)

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US (1) US6292756B1 (en)
EP (1) EP1274988B1 (en)
AT (1) ATE510204T1 (en)
AU (2) AU4921501A (en)
CA (1) CA2403616C (en)
NO (1) NO335902B1 (en)
WO (1) WO2001071324A1 (en)

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Publication number Publication date
NO335902B1 (en) 2015-03-16
ATE510204T1 (en) 2011-06-15
EP1274988A1 (en) 2003-01-15
AU2001249215B2 (en) 2005-06-23
NO20024463D0 (en) 2002-09-18
CA2403616C (en) 2012-09-25
AU4921501A (en) 2001-10-03
WO2001071324A1 (en) 2001-09-27
EP1274988B1 (en) 2011-05-18
US6292756B1 (en) 2001-09-18
EP1274988A4 (en) 2006-11-02
NO20024463L (en) 2002-11-20

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