公开(公告)号：WO2015058183A2

公开(公告)日：2015-04-23

申请号：PCT/US2014/061347

申请日：2014-10-20

Applicant: WEATHERFORD/LAMB, INC.

Inventor： TAVERNER, Domino ,  DOWD, Edward, M. ,  LABELLA, David

IPC: G01K11/32

CPC classification number: G01K11/32 ,  G01K2011/324 ,  G02B6/125 ,  G02B6/2552 ,  G02B2006/12138

Abstract: Large diameter optical waveguides (cane) may stiffen as diameter increases. The minimum bend radius may become larger than is practical for many applications. Standard-sized optical fibers may be fusion spliced to the ends of a cane segment where the fusion splice area is protected with a high temperature coating such as polyimide. The cane segment is then heated (e.g., using a hot flame torch or arc) and bent to form a U-bend, or other angle, that is free of bending stress. The heated glass may be shaped, while maintaining the waveguide properties of the cane. Once cooled, the cane maintains the new shape. Therefore, light may be propagated around the bend or angle. Thus, many configurations of cane devices may be fabricated. Some examples of cane configurations include coils, U-turns (U-bends), angled inputs/outputs, etc. Bent cane may be useful for loop-back operations, such as double-ended Raman distributed temperate sensing (DTS).

Abstract translation: 当直径增加时，大直径的光波导（拐杖）可能变硬。 最小弯曲半径可能会比许多应用中的实际应用更大。 标准尺寸的光纤可以熔接到手段段的端部，其中熔接区域被诸如聚酰亚胺的高温涂层保护。 然后将该拐杖段加热（例如，使用热焰炬或弧）并弯曲以形成不具有弯曲应力的U形弯曲或其它角度。 加热的玻璃可以成形，同时保持手杖的波导特性。 一旦冷却，甘蔗保持新的形状。 因此，光可以围绕弯曲或角度传播。 因此，可以制造手杖装置的许多构造。 甘蔗配置的一些示例包括线圈，U形转弯（U形弯曲），倾斜输入/输出等。弯曲拐角可用于环回操作，例如双端拉曼分布温度感测（DTS）。

公开(公告)号：WO2014209511A1

公开(公告)日：2014-12-31

申请号：PCT/US2014/038419

申请日：2014-05-16

Applicant: WEATHERFORD/LAMB, INC.

Inventor： LAGACE, Michael ,  LABELLA, David ,  TAVERNER, Domino

IPC: G02B6/28 ,  G02B6/44 ,  G01D5/353

CPC classification number: G01V8/00 ,  E21B47/102 ,  E21B47/123 ,  G01D5/35316 ,  G01D5/35354 ,  G01D5/35387 ,  G01K11/32 ,  G01K11/3206 ,  G01L9/0076 ,  G01L9/0077 ,  G02B6/36

Abstract: Techniques and apparatus are provided for downhole sensing using optical couplers in a downhole splitter assembly to split interrogating light signals into multiple optical sensing branches (608, 610, 622, 624, 626). Each optical branch may then be coupled to an optical sensor (e.g., a pass-through or an optical single-ended transducer (OSET) 612, 626, 628) or to another optical coupler for additional branching. The sensors may be pressure/temperature (P/T) type transducers. Some systems may exclusively use OSETs as the optical sensors. In this manner, if one of the OSETs is damaged, it does not affect light traveling to any of the other sensors, and sensing information from remaining sensors is still returned.

Abstract translation: 提供技术和装置用于井下分离器组件中的光耦合器的井下感测，以将询问光信号分离成多个光学感测分支（608,610,622,624,626）。 然后，每个光学分支可以耦合到光学传感器（例如，直通或光学单端换能器（OSET）612,626,628），或耦合到另一光耦合器以用于额外的分支。 传感器可以是压力/温度（P / T）型换能器。 一些系统可以专门使用OSET作为光学传感器。 以这种方式，如果一个OSET被损坏，则它不影响行进到任何其它传感器的光，并且仍然返回来自其余传感器的感测信息。