基本信息:
- 专利标题： DOWNHOLE FIBER OPTIC ACOUSTIC SAND DETECTOR
- 专利标题（中）：卧式光纤光学探测器
- 申请号：PCT/US2004/032114 申请日：2004-09-30
- 公开(公告)号：WO2005033465A2 公开(公告)日：2005-04-14
- 发明人： GOLDNER, Eric, L.
- 申请人： SABEUS PHOTONICS, INC. , GOLDNER, Eric, L.
- 申请人地址： 26679 West Agoura Road, Suite 100, Calabasas, California 91302 US
- 专利权人： SABEUS PHOTONICS, INC.,GOLDNER, Eric, L.
- 当前专利权人： SABEUS PHOTONICS, INC.,GOLDNER, Eric, L.
- 当前专利权人地址： 26679 West Agoura Road, Suite 100, Calabasas, California 91302 US
- 代理机构： FITZGERALD, John, K.
- 优先权： US60/508,383 20031003
- 主分类号： E21B
- IPC分类号： E21B
摘要：
An array of fiber optic acoustic sensors is formed within an optical fiber. The array of acoustic sensors may be deployed to a well bore for detecting acoustic signals occurring within the production area of the well bore, such as acoustic signals resulting from sand invading the well bore. A plurality of acoustic sensors may be formed by forming a plurality of periodic refractive index perturbations at selected intervals within the acoustic sensing section of the optical fiber. The optical fiber may be deployed within the well head within a suitable protective arrangement such as deployed through a tube or armor using a suitable material such that the optical fiber is protected, yet retains sensitivity to acoustic signals. The fiber optic acoustic sensor of the present invention may be unobtrusively mounted on the exterior of a well casing such that the sensor is not in the fluid stream.
摘要（中）：
在光纤内形成一系列光纤声学传感器。 声学传感器阵列可以部署到井眼中，用于检测在井眼的生产区域内发生的声信号，例如由侵入井筒的沙子引起的声信号。 可以通过在光纤的声学感测部分内以选定的间隔形成多个周期性折射率扰动来形成多个声学传感器。 光纤可以在适当的保护装置内展开在井口内，例如使用合适的材料通过管或装甲展开，使得保护光纤，同时保持对声信号的灵敏度。 本发明的光纤声学传感器可以不显眼地安装在井套管的外部，使得传感器不在流体流中。
IPC结构图谱:
| E | 固定建筑物 |
| --E21 | 土层或岩石的钻进；采矿 |
| ----E21B | 土层或岩石的钻进；从井中开采油、气、水、可溶解或可熔化物质或矿物泥浆 |