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激光光纤压力检测技术在海洋石油勘探中的应用研究
生龙活虎3
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介绍了一种用于海洋石油勘探的反射式强度调制型光纤压力传感器。依据新颖的网络补偿技术,提高了强度调制型光纤传感器的长期稳定性和检测精度。从理论上描述了测量误差补偿机理。初步的位移测试实验验证了所设计研制的传感器的正确性和实用性,压力的测量精度可达到011 MPa。将这种传感器应用于海洋井下压力的检测,可具有良好的稳定性和极大的实用价值,测量稳定性可以达到0115 %。
关键词 光纤压力传感器,激光测量,石油勘探,补偿技术
Abstract A novel reflex fiber2optic pressure sensor used in the offshore oil exploration was proposed. Based on the original network compensation technique , the long2term stability and the measurement accuracy of the intensity2modulated fiber2optic sensors were tremendously improved. The error compensation principle of the sensor was theoretically described. Preliminary experimental results indicated the feasibility and practicability , and the estimated pressure measurement accuracy will reach 0. 1 MPa. The measurement stability can reach 0. 15 % when it was applied on the underground crude oil exploration.
Key words fiber2optic pressure sensor , laser measurement , offshore oil exploration , compensation technique
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