发明名称 |
ARRAYED WAVE DIVISION MULTIPLEX TO EXTEND RANGE OF IOFDR FIBER BRAGG SENSING SYSTEM |
摘要 |
An apparatus for performing a measurement of a downhole property includes an optical fiber having a first section that has a first set of fiber Bragg gratings with a first resonant wavelength inscribed therein and a second section that has a second set of fiber Bragg gratings with a second resonant wavelength different from the first resonant wavelength inscribed therein. The second section is in series with the first section. An optical interrogator emits a swept-wavelength frequency domain light signal having varying wavelength amplitude modulation into the optical fiber, receives a frequency domain return light signal, and transforms the frequency domain return signal into a time domain to determine a resonant wavelength shift of each fiber Bragg grating and the corresponding location of each interrogated fiber Bragg grating. A processor converts the resonant wavelength shift of each interrogated fiber Bragg grating into the downhole property measurement. |
申请公布号 |
WO2016069160(A1) |
申请公布日期 |
2016.05.06 |
申请号 |
WO2015US52609 |
申请日期 |
2015.09.28 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
BARRY, ALEXANDER M.;KU, KARL KAI;MITCHELL, IAN;JOHNSTON, WILLIAM |
分类号 |
E21B47/00;G01V8/02;G01V8/24 |
主分类号 |
E21B47/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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