发明授权
- 专利标题： Fiber optic cable for distributed acoustic sensing with increased acoustic sensitivity
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申请号： US14983994申请日： 2015-12-30
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公开(公告)号： US09841315B2公开(公告)日： 2017-12-12
- 发明人: Domino Taverner , John J. Grunbeck , James R. Dunphy , Edward M. Dowd , David LaBella , Mark Baker , Andrew S. Kuczma , Francis X. Bostick, III
- 申请人： Weatherford Technology Holdings, LLC
- 申请人地址： US TX Houston
- 专利权人： WEATHERFORD TECHNOLOGY HOLDINGS, LLC
- 当前专利权人： WEATHERFORD TECHNOLOGY HOLDINGS, LLC
- 当前专利权人地址： US TX Houston
- 代理机构： Patterson & Sheridan, L.L.P.
- 主分类号： G02B6/44
- IPC分类号： G02B6/44 ; G02B6/02 ; E21B47/12 ; G01H9/00
摘要：
Methods and apparatus for performing Distributed Acoustic Sensing (DAS) using fiber optics with increased acoustic sensitivity are provided. Acoustic sensing of a wellbore, pipeline, or other conduit/tube based on DAS may have increased acoustic sensitivity through fiber optic cable design and/or increasing the Rayleigh backscatter property of a fiber's optical core. Some embodiments may utilize a resonant sensor mechanism with a high Q coupled to the DAS device for increased acoustic sensitivity.