Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province

Laboratory of, China

Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province

Laboratory of, China

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Guo S.-S.,China National Offshore Oil Corporation | Shang Y.,Shandong Academy of Sciences | Shang Y.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Liu X.-H.,Shandong Academy of Sciences | And 7 more authors.
Advanced Materials Research | Year: 2013

With the continual advancement of oil field development, water cut is an extremely important parameter which determines the transmission characteristics of the oil production and provides a scientific basis for oil and gas optimization exploration and increase of reservoir recovery. A new type of water cut meter based on fiber optic interferometer is proposed, sound pressure signal on the pipe is generated when the acoustic wave is propagated in a mixture of the pipe, the fiber optic sensors wrapped closely around the outside wall of pipe is capable of sensing sound pressure signal, the use of phase-carrier technology aloud sound velocity is solved out through the method of Phase Generated Carrier(PGC)and sound pressure spectrum, then water cut can be solved according to the relationship between sound velocity and water cut. © (2013) Trans Tech Publications, Switzerland.


Wang J.-Y.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Wang J.-Y.,Shandong Academy of Sciences | Qi H.-F.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Qi H.-F.,Shandong Academy of Sciences | And 7 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

A high sensitive fiber Bragg grating (FBG) geophone detecting system based on narrow line width distributed feedback (DFB) laser is realized by using filtering demodulation. Sensitivity of FBG geophone lies on the structure of the sensor shell and the shape of the reflectivity spectrum of FBG. Experiments on the detecting system's frequency character have been done. Results show that this geophone can detect the smallest acceleration of 1mm/s2 with a flat response from 5Hz to 40Hz.. The experiments on coal mine exhibit that the geophone can be used to measure microseismic signals. The detecting system shows great prospect in micro-seismic detection, and geological disasters detecting. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).


Wang J.-Y.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Wang J.-Y.,Shandong Academy of Sciences | Jie H.,Shandong Micro Sensor Photonics Ltd | Song G.-D.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | And 6 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

A high sensitive fiber Bragg grating (FBG) acceleration sensor based on filtering demodulation is analyzed on sensitivity, resolution and temperature experiment. Sensitivity and resolution of FBG sensor lies on the structure of the sensor shell and the shape of the reflectivity spectrum of FBG. The temperature experiments of the FBG sensor show the work and storing temperature range of the sensor based on different preparing stress and packaging glue. Experiments on the detecting system's frequency character have been done. Results show that this acceleration sensor can detect the smallest acceleration of 1mm/s2 with a flat response from 5Hz to 40Hz. © 2012 SPIE.


Wang J.-Y.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Wang J.-Y.,Shandong Academy of Sciences | Song G.-D.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Song G.-D.,Shandong Academy of Sciences | And 7 more authors.
Procedia Engineering | Year: 2011

A high sensitive micro-seismic fiber Bragg grating (FBG) sensor system based on narrow line width distributed feedback (DFB) laser is realized by using filtering demodulation. Sensitivity of micro-seismic FBG sensor lies on the structure of the sensor shell and the shape of the reflectivity spectrum of FBG. Experiments on the sensor system's frequency character have been done. Results show that this sensor has the smallest acceleration of 1mm/s 2. The experiments on coal mine exhibit that the sensor can be used to measure micro-seismic sigmals. So the FBG sensor is feasible to have practical use to measure micro-seismic signals because the sensor has high sensitivity and is easy to be fabricated, it has good low frequency response and the interrogation system is simple, low cost. © 2011 Published by Elsevier Ltd.


Shang Y.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Shang Y.,Shandong Academy of Sciences | Liu X.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Liu X.,Shandong Academy of Sciences | And 9 more authors.
Advanced Materials Research | Year: 2013

In the oil field development and production, fluid flow is an extremely important parameter which determines the transmission characteristics of the oil production, real-time monitoring of fluid flow parameter provides a scientific basis for oil and gas optimization exploration and increase of reservoir recovery. A method for interrogating fiber optic sensors using flow-induced pipe vibration is proposed, then the fixed relationship between standard deviation of pipe wall's vibration induced by fully developed turbulence and mean flow rate is determined.The advantage of this method is applicable to small flow measurement with non-intrusively. © (2013) Trans Tech Publications, Switzerland.


Shang Y.,Shandong Academy of Sciences | Shang Y.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Liu X.,Shandong Academy of Sciences | Liu X.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | And 4 more authors.
Photonic Sensors | Year: 2014

In the field of oil well logging, real-time monitoring of the fluid flow parameter provides a scientific basis for oil and gas optimization exploration and increase in reservoir recovery, so a non-intrusive flow test method based on turbulent vibration was proposed. The specific length of the sensor fiber wound tightly around the outer wall of the pipe was connected with the optical fiber gratings at both ends, and the sensor fiber and the optical fiber gratings composed the flow sensing unit. The dynamic pressure was generated by the turbulence when fluid flows through the pipe, and the dynamic pressure resulted in the light phase shift of the sensor fiber. The phase information was demodulated by the fiber optic interferometer technology, time division multiplexing technology, and phase generated carrier modulation and demodulation techniques. The quadratic curve relationship between the phase change and flow rate was found by experimental data analysis, and the experiment confirmed the feasibility of the optical fiber flow test method with non-intrusion and achieved the real-time monitoring of the fluid flow. © 2014 The Author(s).


Shang Y.,Shandong Academy of Sciences | Shang Y.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Liu X.-H.,Shandong Academy of Sciences | Liu X.-H.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | And 4 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2013

In the field of oil well logging, real-time monitoring of fluid flow parameter provides a scientific basis for oil and gas optimization exploration and increase of reservoir recovery, so the non-intrusive flow test method based on turbulent vibration is proposed. The specific length of sensor fiber wound tightly around the outer wall of the pipe is connected with the optical fiber gratings at both ends, the sensor fiber and the optical fiber gratings compose the flow sensing unit. The dynamic pressure is generated by the turbulence when fluid flows through the pipe, and the dynamic pressure results in the light phase shift of the sensor fiber. The phase information is demodulated by fiber optic interferometer technology, time division multiplexing technology and Phase Generated Carrier modulation and demodulation techniques. The quadratic curve relationship between phase change and flow rate is found by experimental data analysis, and the experiment confirms the feasibility of optical fiber flow test method with non-intrusive and implements the realtime monitoring of flow. © 2013 SPIE.


Song G.-D.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Song G.-D.,Shandong Academy of Sciences | Wang J.-Y.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Wang J.-Y.,Shandong Academy of Sciences | And 5 more authors.
Procedia Engineering | Year: 2011

Experiments exhibit that the lighter fiber grating sensor is more advantageous to couple with the earth. In order to reduce the sensor coupling with the atmosphere, different sensitivity sensors are embedded underground. The experimental data show that reducing the sensor resonant frequency can improve the SNR of the system, but restrict the high frequency signals, and reduce the precision of P wave first arrival time pick. Experiments show the fiber grating sensor whose resonance frequency is 180 Hz can get a higher sensitivity and receive higher frequency microseismic signals at the same time. On the premise of good coupling, signal quality monitored by fiber grating sensors reaches the piezoelectric sensors monitoring level. © 2011 Published by Elsevier Ltd.


Shang Y.,Shandong Academy of Sciences | Shang Y.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Liu X.-H.,Shandong Academy of Sciences | Liu X.-H.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | And 4 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2014

With the continual advancement of oil field development, water cut is an extremely important parameter which determines the transmission characteristics of the oil production and provides a scientific basis for oil and gas optimization exploration and increase of reservoir recovery. A new water cut meter based on fiber optic interferometer is proposed, sound pressure signal on the pipe is generated when the acoustic wave is propagated in a mixture of the pipe, the fiber optic sensors wrapped closely around the outside wall of pipe is capable of sensing sound pressure signal, the use of phase-carrier technology aloud sound velocity is solved out through the method of Phase Generated Carrier(PGC)and sound pressure spectrum, then water cut can be solved according to the relationship between sound velocity and water cut. © 2014 SPIE.


Zhao W.A.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Liu X.H.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Lu J.S.,Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province | Lu J.S.,Shandong Academy of Sciences | And 2 more authors.
Applied Mechanics and Materials | Year: 2014

Monitoring system for transformation and distribution equipments plays an important role in offshore platform safety production. This paper introduces the OPC technology and discusses the requirements and architecture of this monitoring system. For the convenience of monitoring data exchange, OPC technology is applied in the design and realization of the monitoring system. An OPC server is created for the monitoring data publication, and the monitoring system can get cable load current data from the OPC server in the central control system. In this way,the monitoring system can exchange monitoring data with the central control system more efficiently. © (2014) Trans Tech Publications, Switzerland.

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