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Title: Optical steam quality measurement system and method

Abstract

An optical measurement system is presented that offers precision on-line monitoring of the quality of steam. Multiple wavelengths of radiant energy are passed through the steam from an emitter to a detector. By comparing the amount of radiant energy absorbed by the flow of steam for each wavelength, a highly accurate measurement of the steam quality can be determined on a continuous basis in real-time. In an embodiment of the present invention, the emitter, comprises three separate radiant energy sources for transmitting specific wavelengths of radiant energy through the steam. In a further embodiment, the wavelengths of radiant energy are combined into a single beam of radiant energy for transmission through the steam using time or wavelength division multiplexing. In yet a further embodiment, the single beam of radiant energy is transmitted using specialized optical elements.

Inventors:
;
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175724
Patent Number(s):
7,034,302
Application Number:
10/251,318
Assignee:
Battelle Energy Alliance, LLC (Idaho Falls, ID) INL
DOE Contract Number:
AC07-05ID14517
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Davidson, James R., and Partin, Judy K.. Optical steam quality measurement system and method. United States: N. p., 2006. Web.
Davidson, James R., & Partin, Judy K.. Optical steam quality measurement system and method. United States.
Davidson, James R., and Partin, Judy K.. Tue . "Optical steam quality measurement system and method". United States. doi:. https://www.osti.gov/servlets/purl/1175724.
@article{osti_1175724,
title = {Optical steam quality measurement system and method},
author = {Davidson, James R. and Partin, Judy K.},
abstractNote = {An optical measurement system is presented that offers precision on-line monitoring of the quality of steam. Multiple wavelengths of radiant energy are passed through the steam from an emitter to a detector. By comparing the amount of radiant energy absorbed by the flow of steam for each wavelength, a highly accurate measurement of the steam quality can be determined on a continuous basis in real-time. In an embodiment of the present invention, the emitter, comprises three separate radiant energy sources for transmitting specific wavelengths of radiant energy through the steam. In a further embodiment, the wavelengths of radiant energy are combined into a single beam of radiant energy for transmission through the steam using time or wavelength division multiplexing. In yet a further embodiment, the single beam of radiant energy is transmitted using specialized optical elements.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 25 00:00:00 EDT 2006},
month = {Tue Apr 25 00:00:00 EDT 2006}
}

Patent:

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  • Determination of the quality of steam is an important aspect of steam injection in secondary recovery operations for petroleum oil wells. The steam quality of concern is the degree of dryness of the steam. This may be defined as the mass fraction of dry saturated steam relative to the steam mixture, at the measuring point. The sonic signals generated by the steam escaping through an orifice may be monitored at a predetermined sonic frequency and will produce a variable amplitude of sound energy at that predetermined sonic frequency. Furthermore, such amplitude varies directly in accordance with the quality of steam.more » A steam quality monitoring system for use with steam injection wells or the like is described. It comprises a conduit for delivering steam to be used, and an orifice connected to the conduit for permitting the steam to escape therethrough. It also comprises a sound transducer physically coupled adjacent to the orifice for generating sonic range frequency signals in accordance with sonic vibrations created by the steam flow through the orifice, and a device for measuring the amplitude of the sonic signals at a predetermined frequency thereof to indicate the quality of the steam. 6 claims.« less
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  • An empirical method for the remote sensing of steam quality that can be easily adapted to downhole steam quality measurements by measuring the electrical properties of two-phase flow across electrode grids at low frequencies.
  • This patent describes a method for determining both the quality and quantity of steam containing both vapor and liquid being injected into a hydrocarbon bearing formation in a thermal recovery process. It comprises positioning a bladed rotating member attached to a motor-generator combination downhole adjacent the hydrocarbon formation; measuring the voltage generated by the rotation of the rotating member; positioning a network of bristles across the borehole to contact the wall of the borehole and intercept substantially all of the liquid flowing along the borehole wall; measuring the total drag force due to liquid and vapor flow as the bristlesmore » are lowered into the borehole; measuring the total drag force due to liquid and vapor flow as the bristles are withdrawn from the borehole; determining the vapor flow by comparing the measured voltage with predetermined voltage versus vapor flow rate for the rotating member motor/generator combination; and determining the quantity of liquid flowing along the wall of the borehole by utilizing the measured drag forces and predetermined drag force versus vapor flow rate and liquid flow rate measurements.« less