Fiber optic Fabry–Perot pressure sensor with low sensitivity to temperature changes for downhole application

Aref, S. H.; Latifi, Hamid; Zibaii, Mohammad Ismail; Afshari, M.

doi:10.1016/j.optcom.2006.08.009

Cited by 101 publications

(46 citation statements)

References 8 publications

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“…Conventional electrical gauges used for in-well parameter measurements have a high failure rate when implemented in a high temperature environment. Fiber optic sensors have an estimated lifetime of 5-10 years, function up to 250°C [4], are electrically passive, and are suitable for use in explosive and/or corrosive environments. Fiber optic sensors for downhole application are focused mainly on the measurement of temperature, pressure, strain, and flow [5].…”

Section: Introductionmentioning

confidence: 99%

High pressure sensor based on photonic crystal fiber for downhole application

Tse

et al. 2010

Appl. Opt.

113

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We demonstrate a polarization-maintaining (PM) photonic crystal fiber (PCF) based Sagnac interferometer for downhole high pressure sensing application. The PM PCF serves as a direct pressure sensing probe. The sensor is transducer free and thus fundamentally enhances its long-term sensing stability. In addition, the PM PCF can be coiled into a small diameter to fulfill the compact size requirement of downhole application. A theoretical study of its loss and birefringence changes with different coiling diameters has been carried out. This bend-insensitive property of the fiber provides ease for sensor design and benefits practical application. The pressure sensitivities of the proposed sensor are 4.21 and 3:24 nm= MPa at ∼1320 and ∼1550 nm, respectively. High pressure measurement up to 20 MPa was achieved with our experiment. It shows both good linearity in response to applied pressure and good repeatability within the entire measurement range. The proposed pressure sensor exhibits low temperature cross sensitivity and high temperature sustainability. It functions well without any measurable degradation effects on sensitivity or linearity at a temperature as high as 293°C. These characteristics make it a potentially ideal candidate for downhole pressure sensing.

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Section: Introductionmentioning

confidence: 99%

High pressure sensor based on photonic crystal fiber for downhole application

Tse

et al. 2010

Appl. Opt.

113

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“…EFPI-based sensors fabricated by this method have the advantages of good long-term stability and low temperature-pressure cross-sensitivity. This epoxy-free EFPI-based pressure sensors are competent for the industrial application with high temperature and high pressure environment [4][5][6]. …”

Section: Controllable Thermal Bonding Techniquementioning

confidence: 99%

“…This situation suggests that innovative sensors capable of operating in various harsh environments should be developed to support industrial efforts. Fiber-optic sensors have been demonstrated to be especially attractive for the measurement of a wide variety of physical and chemical parameters in harsh environment in past years [3][4][5][6]. In comparison with conventional sensors, fiber-optic sensors own many advantages, such as immunity to EMI, small size, light weight, resistance to chemical corrosion, high accuracy, resolution, and capability of remote operation.…”

Section: Introductionmentioning

confidence: 99%

Pressure sensor based on the fiber-optic extrinsic Fabry-Perot interferometer

Zhou

2010

Photonic Sens

151

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Pressure sensors based on fiber-optic extrinsic Fabry-Perot interferometer (EFPI) have been extensively applied in various industrial and biomedical fields. In this paper, some key improvements of EFPI-based pressure sensors such as the controlled thermal bonding technique, diaphragm-based EFPI sensors, and white light interference technology have been reviewed. Recent progress on signal demodulation method and applications of EFPI-based pressure sensors has been introduced. Signal demodulation algorithms based on the cross correlation and mean square error (MSE) estimation have been proposed for retrieving the cavity length of EFPI. Absolute measurement with a resolution of 0.08 nm over large dynamic range has been carried out. For downhole monitoring, an EFPI and a fiber Bragg grating (FBG) cascade multiplexing fiber-optic sensor system has been developed, which can operate in temperature 300 ℃ with a good long-term stability and extremely low temperature cross-sensitivity. Diaphragm-based EFPI pressure sensors have been successfully used for low pressure and acoustic wave detection. Experimental results show that a sensitivity of 31 mV/Pa in the frequency range of 100 Hz to 12.7 kHz for aeroacoustic wave detection has been obtained.

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“…Progress has been made in a number of fronts, including sensors (Nath et al, 2006;Aref et al, 2006), frameworks for data acquisition (DeVries, 2005), and studies on reservoir optimization (Yeten and Jalali, 2001;Yeten et al, 2004).…”

Section: Introductionmentioning

confidence: 99%