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    • 3. 发明授权
    • Method and system for monitoring waterbottom subsidence
    • 监测水底沉降的方法和系统
    • US08621922B2
    • 2014-01-07
    • US13121196
    • 2009-09-29
    • Johannis Josephus Den BoerAndre FranzenDaniel JoinsonKari-Mikko Jääskeläinen
    • Johannis Josephus Den BoerAndre FranzenDaniel JoinsonKari-Mikko Jääskeläinen
    • G01D3/00
    • G01V11/00G01C5/06
    • A system for monitoring subsidence and/or rising of a waterbottom has string of pressure sensors along the interior of a sealed -protective tube(q−) that rests on the waterbottom and is filled with a low pressure liquid, so that any subsidence and/or rising of the can be deduced from subsidence and/or rising of a section of the tube and associated pressure variations measured by the sensors due to variation of the hydrostatic fluid pressure of the liquid in the of the tube. The tube interior is divided into segments by valves during descent to protect the sensors against hydrostatic pressure of the liquid within the tube during installation. The use of a low pressure liquid in the tube allows the use of sensitive pressure sensors which are able to monitor pressure variations of −0.001 Bar associated with a waterbottom subsidence of −1 cm, at a water depth of >km where the ambient water pressure may be >100 Bar.
    • 用于监测水底沉降和/或上升的系统具有沿着密封保护管(q-)的内部的一系列压力传感器,所述密封保护管(q-)位于水底部并且填充有低压液体,使得任何沉降和/ 或者由于管中的液体的流体静力学流体压力的变化,由传感器测量的管的一部分和相应的压力变化的下沉和/或上升以及/或上升。 管内部在下降期间由阀门分成段,以在安装期间保护传感器免受管内液体的静水压力。 在管中使用低压液体允许使用敏感的压力传感器,其能够监测在水深> km处的水深≥1cm的相关的-0.001巴的压力变化,其中环境水压 可能> 100吧。
    • 4. 发明授权
    • Method and system for inserting a fiber optical sensing cable into an underwater well
    • 将光纤传感电缆插入水下井的方法和系统
    • US07699103B2
    • 2010-04-20
    • US11631736
    • 2005-07-06
    • Johannis Josephus Den BoerKari-Mikko Jääskeläinen
    • Johannis Josephus Den BoerKari-Mikko Jääskeläinen
    • E21B47/00
    • E21B33/076E21B19/002E21B23/08E21B23/14E21B47/123
    • A fiber optical sensing cable is inserted into an underwater well by: connecting a housing (12A) comprising a coiled or spooled U-shaped fiber optical sensing cable (21) to the wellhead (2) of the well (1) such that an opening (14) in the wall of the housing (12A) is connected to a guide tube (15) extending into the underwater well (1); —inserting the U-shaped nose section (21A) of the fiber optical sensing cable (21) via the opening (14) into the guide tube (15), thereby uncoiling at least part of a pair of substantially parallel sections of the fiber optical sensing cable of which the lower ends are interconnected by the U-shaped nose section; and connecting the upper ends (21B) of the substantially parallel sections of the fiber optical sensing cable to an optical signal transmission and/or receiving unit via e.g. a pair of wet mateable connectors that are connected to a pair of underwater fiber optical transmission cables (14).
    • 纤维光学传感电缆通过以下方式插入到水下井中:将包括盘绕或卷绕的U形光纤传感电缆(21)的壳体(12A)连接到井(1)的井口(2),使得开口 在壳体(12A)的壁中的(14)连接到延伸到水下井(1)中的引导管(15); - 经由所述开口(14)将所述光纤传感电缆(21)的所述U形鼻部(21A)插入所述引导管(15)中,从而将所述光纤的一对基本上平行的部分的至少一部分 传感电缆,其下端通过U形鼻部部分相互连接; 以及通过例如光纤信号传输和/或接收单元将光纤传感电缆的基本上平行的部分的上端(21B)连接到光信号传输和/或接收单元。 连接到一对水下光纤传输电缆(14)上的一对可湿式可匹配连接器。
    • 6. 发明申请
    • METHOD FOR MONITORING DEFORMATION OF WELL EQUIPMENT
    • 监测设备变形的方法
    • US20110290477A1
    • 2011-12-01
    • US13142451
    • 2009-12-23
    • Kari-Mikko Jääskeläinen
    • Kari-Mikko Jääskeläinen
    • E21B47/00
    • E21B47/011E21B17/026E21B43/08E21B43/10E21B43/24E21B43/2401E21B47/0006E21B47/01E21B47/065E21B47/123G01V8/16
    • A method of monitoring deformation and other characteristics of a casing or other tubular or cylindrical well equipment in a well traversing an underground formation, comprises:—providing a carrier rod having at least one recess extending along at least part of the length of the rod, in which recess an optical fiber assembly for monitoring strain, temperature and/or other physical parameters is arranged, which assembly is along at least part of its length bonded within the recess;—lowering the carrier rod and well equipment simultaneously into the well such that the rod is arranged in an annular space between the well equipment and the wellbore;—securing the rod at a plurality of locations distributed along its length to the well equipment; and—connecting the optical fiber assembly to an optical signal transmission and reception assembly for monitoring the physical parameters of the well equipment.
    • 一种在穿过地下地层的井中监测壳体或其它管状或圆柱形井设备的变形和其它特性的方法包括: - 提供具有至少一个沿着杆的长度的至少一部分延伸的凹部的承载杆, 在其中设置用于监测应变,温度和/或其他物理参数的光纤组件,该组件沿其长度的至少部分长度被结合在凹部内; - 将载体杆和井设备同时进入井中,使得 所述杆布置在所述井设备和所述井筒之间的环形空间中; - 在沿着其长度分布在所述井设备处的多个位置处固定所述杆; 并将光纤组件连接到用于监测井设备的物理参数的光信号传输和接收组件。
    • 7. 发明申请
    • Light Pulse Amplification In Long Optical Fibers
    • 长光纤中的光脉冲放大
    • US20070273961A1
    • 2007-11-29
    • US11631758
    • 2005-07-06
    • Kari-Mikko Jääskeläinen
    • Kari-Mikko Jääskeläinen
    • H01S3/30
    • H04B10/2916G01M11/319H01S3/094003H01S3/302
    • A method is disclosed for amplifying a light pulse (S) in an optical fiber (1), wherein a Raman pump signal (RPS) having a lower wavelength than the light pulse (S) is transmitted at a selected interval of time after the light pulse (S) into an end (IA) of an optical fiber(1), with dispersion such that the Raman pump signal (RPS) travels faster through the fiber(1) than the light pulse(S) and reaches and enhances the light pulse (S) after the light pulse has travelled along a selected distance (d1) through the fiber, wherein the Raman pump signal (RPS) is ramped in a substantially linear manner such that the amplification increases with the distance along which the light pulse has travelled along the length of the fiber from A1=S1+RPSmin at a distance d1 to A2=S+RPSmax at a distance d2>d1 from said end (IA) of the fiber 1 and such that the Raman gain increase is substantially similar to the fiber losses of the amplified signal. The use of a ramped Raman pump signal (RSP) mitigates Stimulated Brillouin Scattering (SBS) in the fiber (1) and extends the operational range of a fiber optical sensing system.
    • 公开了一种用于放大光纤(1)中的光脉冲(S)的方法,其中具有比光脉冲(S)低的波长的拉曼泵浦信号(RPS)在光之后以选定的时间间隔传输 脉冲(S)进入光纤(1)的端部(IA),具有使得拉曼泵浦信号(RPS)比光脉冲(S)更快地穿过光纤(1)的分散,并达到和增强光 在光脉冲沿着选定距离(d 1)穿过光纤行进后,脉冲(S),其中拉曼泵浦信号(RPS)以基本上线性的方式斜坡使得放大随着光脉冲的距离而增加 沿着纤维的长度从距离d 1到A 2的距离从A 1> 1 S 1 + RPS&lt; 距离纤维1的所述端部(IA)的距离d 2 > d <1> ,从而使得 拉曼增益增加基本上类似于光纤损耗 的放大信号。 使用斜坡拉曼泵浦信号(RSP)减轻了光纤(1)中的受激布里渊散射(SBS),并延长了光纤传感系统的工作范围。