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    • 13. 发明授权
    • Cable connection to sensors in a well
    • 电缆连接到井中的传感器
    • US06446723B1
    • 2002-09-10
    • US09328729
    • 1999-06-09
    • Rogerio Tadeu RamosWillem A. WijnbergChristian Jean Marcel ChouzenouxStephanie Marie-Odile Montillet
    • Rogerio Tadeu RamosWillem A. WijnbergChristian Jean Marcel ChouzenouxStephanie Marie-Odile Montillet
    • E21B1700
    • H01B7/046H01B7/0869
    • A description of a cable for connection to sensors permanently downhole is provided, the cable comprising a plurality of elongate conductors capable of operative connection to sensors, a sheath surrounding the elongate conductors and holding the conductors so as to extend substantially parallel to an elongate axis, wherein the sheath has a cross-section, perpendicular to the direction of the elongate axis, which has a major dimension and a minor dimension. The cross-section of the cable is thus flattened and can be in the shape of an ellipse, a crescent or comprise a circle with wing-like portions attached on opposite sides of the circle. The sheath is made from a resilient material, so as to provide a robust outer surface of the cable which ensures the cable can be placed downhole without breaking. A number of the elongate conductors are grouped together and inter-weaved in a helical arrangement, so as to reduce electrical cross-talk between the conductors. Strengthening cords are included in the sheath which are hollow to allow passage of fiber optic cables within the wire cords. A method of cementing a well is also provided, comprising forming a borehole, placing elongate tubing within the borehole to form an annulus in the borehole, and placing within the annulus a cable with a cross-section which has a major and a minor dimension, such that the minor dimension extends along a radius of the borehole, and passing cement, or thixotropic fluid, downhole to secure the cable in the annulus.
    • 提供了用于连接到传感器永久井下的电缆的描述,电缆包括能够与传感器有效连接的多个细长导体,围绕细长导体的护套,并且保持导体以基本平行于细长轴线延伸, 其中所述护套具有垂直于所述细长轴线的方向的横截面,所述横截面具有主要尺寸和次要尺寸。 因此,电缆的横截面是扁平的,并且可以是椭圆形,新月形或包括安装在圆的相对侧上的翼状部分的圆形。 护套由弹性材料制成,以提供牢固的电缆外表面,确保电缆可以在井下放置而不断裂。 多个细长导体被分组在一起并以螺旋布置进行编织,以便减少导体之间的电串扰。 护套中包括加强绳索,其中空,以允许光缆在线缆内通过。 还提供了一种固井的方法,包括形成钻孔,将细长管放置在钻孔内以在钻孔中形成环形空间,并且在环形空间内放置具有主尺寸和小尺寸的横截面的缆索, 使得次要尺寸沿钻孔的半径延伸,并且在井下通过水泥或触变流体以将电缆固定在环空中。
    • 14. 发明授权
    • Optical probes
    • 光学探针
    • US5831743A
    • 1998-11-03
    • US793166
    • 1997-02-06
    • Rogerio Tadeu RamosEdmund J. Fordham
    • Rogerio Tadeu RamosEdmund J. Fordham
    • G01N21/43G01N21/55G02B6/36
    • G01F1/74G01F1/661G01N21/431
    • After an oil well has been drilled, lined and cased, and is producing, it may be desirable in situ (either at the wellhead or downhole) to measure, and log (record), the rate at which fluid, and its several distinct components, is flowing out of the geological formations through which the bore has been drilled and is passing into and up the casing. A useful type of detector system for this purpose is an optical probe (31), and the invention proposes a novel design of probe which has a doubly-angled tip, there being measured the light totally internally reflected at the interface (37), which depends on the ratio of the refractive indices of the probe tip and fluid component in which it is immersed. The invention also proposes an improved method using such a tipped probe, in which, to facilitate distinguishing between the components of a multiphase fluid such as the gas/water/oil formation fluid in an oil well, there is employed a pair of adjacent probes, one of which is designed to distinguish between gas and liquid and the other of which is designed to distinguish between oil and "not oil" (gas/water), and there are then logically combined the outputs of the two so as to give an indication of which component the probes are in.
    • PCT No.PCT / GB95 / 01792 Sec。 371日期1997年2月6日 102(e)日期1997年2月6日PCT提交1995年7月31日PCT公布。 出版物WO96 / 05499 日期1996年2月22日在钻井,排水和套管并正在生产之后,可能需要原地(在井口或井下)测量和记录(记录)流体, 并且其几个不同的部件流出地质构造,钻孔通过该地质构造钻进并穿过套管。 用于此目的的有用类型的检测器系统是光学探针(31),并且本发明提出了具有双倾斜尖端的探针的新颖设计,在该界面(37)处测量完全内部反射的光, 取决于探针尖端和浸入其中的流体组分的折射率的比率。 本发明还提出了一种使用这种倾斜探针的改进方法,其中为了便于区分油相中的多相流体(例如气/水/油形成流体)的组分,使用一对相邻的探针, 其中一个设计用于区分气体和液体,另一个设计用于区分油和“不油”(气/水),然后逻辑上组合两者的输出,以给出指示 探头所在的组件。
    • 16. 发明授权
    • System and method for uniform and localized wall thickness measurement using fiber optic sensors
    • 使用光纤传感器进行均匀和局部壁厚测量的系统和方法
    • US08941821B2
    • 2015-01-27
    • US13256633
    • 2010-03-18
    • Peter CoupeDamon Richard RobertsDmitry BelovEvgeniya Myalo DegerMasafumi FukuharaYamid PicoRogerio Tadeu RamosIan Peirce
    • Peter CoupeDamon Richard RobertsDmitry BelovEvgeniya Myalo DegerMasafumi FukuharaYamid PicoRogerio Tadeu RamosIan Peirce
    • G01B11/16G01B11/06G01B21/04G01D3/036G01D5/353G01L9/00
    • G01B11/06G01B11/18G01B21/045G01D3/0365G01D5/35383G01L9/0032
    • A system and method are provided for determining wall thickness of a structure such as a metallic pressurized pipe. The system includes an optical fiber having a plurality of Fiber Bragg Gratings (FBGs), and a mounting for securing the FBGs over discrete portions of the exterior surface of the pipe such that strain in the pressurized pipe wall is transmitted to the FBGs. The system further includes a light source and a light sensor coupled to an end of the optical fiber. The light sensor converts light reflected back from the FBGs into electrical signals that a digital processor converts into strain measurements. The FBGs are mounted around portions of the pipe expected to have significant metal loss as well as portions of the pipe expected to have negligible metal loss. The method includes at least one of comparing relative strains at locations with negligible metal loss to those with significant metal loss to accurately determine the thickness of the wall with metal loss; compensating for temperature effects by considering relative strains at areas of the pipe with and without metal loss; and measuring axial strain on the pipe with one or more of the FBGs to correct for at least one of bending and torsion effects on hoop strain.
    • 提供了一种用于确定诸如金属加压管的结构的壁厚的系统和方法。 该系统包括具有多个光纤布拉格光栅(FBG)的光纤,以及用于将FBG固定在管的外表面的离散部分上的安装件,使得加压管壁中的应变传递到FBG。 该系统还包括耦合到光纤端部的光源和光传感器。 光传感器将从FBG反射回来的光转换为数字处理器转换为应变测量的电信号。 FBG安装在预期具有显着金属损失的管道周围,并且管道的部分预期具有可忽略的金属损失。 该方法包括将具有可忽略的金属损失的位置处的相对应变与具有显着金属损失的位置进行比较中的至少一个,以精确地确定具有金属损失的壁的厚度; 通过考虑在具有和不具有金属损失的管道的区域处的相对应变来补偿温度影响; 并用一个或多个FBG测量管道上的轴向应变,以校正环箍应变的弯曲和扭转效应中的至少一种。
    • 17. 发明申请
    • RETRACTABLE SENSOR SYSTEM AND TECHNIQUE
    • 可回收传感器系统和技术
    • US20090070041A1
    • 2009-03-12
    • US11851437
    • 2007-09-07
    • Rogerio Tadeu Ramos
    • Rogerio Tadeu Ramos
    • G01V1/40
    • G01V1/52E21B47/065E21B47/12E21B47/123
    • A technique usable with a well includes disposing a retractable line in a conduit having an open end located above a region of interest in the well. The retractable line comprises a sensing portion that, when the line is deployed, extends from the open end of the conduit and into the region of interest. Information observed by the sensing portion in the region of interest is communicated to the surface. When further well operations are to be performed in the region of interest, the retractable line is retracted until the sensing portion is located above the region of interest and below the surface. After the well operation is completed, the retractable line may be re-deployed such that the sensing portion again extends through the open end of the conduit and into the region of interest to continue observing characteristics associated with the well.
    • 可用于井的技术包括将可伸缩线路布置在具有位于井中的感兴趣区域上方的开口端的导管中。 可伸缩线包括感测部分,当线路部署时,从导管的开口端延伸到感兴趣区域中的感测部分。 由感兴趣区域中的感测部分观察到的信息被传送到表面。 当在感兴趣的区域中进行进一步的井操作时,缩回的管线缩回直到感测部分位于感兴趣区域之上并在表面下方。 在井操作完成之后,可伸缩线路可以被重新部署,使得感测部分再次延伸穿过导管的开口端并进入感兴趣的区域,以继续观察与井相关联的特性。
    • 18. 发明授权
    • Single point optical probe for measuring three-phase characteristics of
fluid flow in a hydrocarbon well
    • 用于测量烃井中流体流动的三相特性的单点光学探针
    • US6023340A
    • 2000-02-08
    • US74081
    • 1998-05-07
    • Xu WuEdmund J. FordhamOliver C. MullinsRogerio Tadeu Ramos
    • Xu WuEdmund J. FordhamOliver C. MullinsRogerio Tadeu Ramos
    • G01N21/85G01N21/00
    • G01F1/74G01F1/661G01N21/8507
    • Single point optical probes for measuring three-phase characteristics of fluid flow in a hydrocarbon well and methods of processing signals generated by the probe are disclosed. A probe having a single fiber optic is coupled to a light source and apparatus for detecting reflectance and fluorescence. Light is delivered to the tip of the probe where it either is internally reflected in the probe or exits the probe and illuminates the fluid (liquid) ambient the probe tip. If the fluid at the probe tip is oil, the light exits the probe, illuminates the oil, and causes the oil to fluoresce. If the fluid is water, no fluorescence occurs. If the fluid is gas, at least some light is internally reflected in the probe. A detection system including at least one beam splitter and fluorescence and reflectance detectors is provided in conjunction with the probe. Preferably, the fluorescence detector is coupled to the fiber optic by a wavelength division multiplexer. A preferred signal processing system for detecting oil, gas, and water provides two quasi-binary indicators: gas/liquid and oil/not oil. Three of the four possible indications (gas-not oil, liquid-not oil, and liquid-oil) give reliable results indicating whether the fluid at the probe tip is gas, water, or oil. One of the four possible indications (gas-oil) can be considered an error indicator.
    • 公开了用于测量烃井中流体流动的三相特性的单点光学探针以及由探针产生的处理信号的方法。 具有单个光纤的探针被耦合到光源和用于检测反射率和荧光的装置。 光被传送到探头的尖端,其中它被内部反射在探头中或者离开探头并照亮探针尖端的流体(液体)环境。 如果探针尖端处的液体是油,则光离开探头,照亮油,并引起油发荧光。 如果液体是水,则不会发生荧光。 如果流体是气体,则至少有一些光在探头内部被反射。 与探头一起提供了包括至少一个分束器和荧光和反射检测器的检测系统。 优选地,荧光检测器通过波分复用器耦合到光纤。 用于检测油,气和水的优选信号处理系统提供两个准二进制指示器:气/液和油/非油。 四种可能的适应症(气体不是油,液体不是油和液体油)中的三种给出了可靠的结果,指示探针尖端的流体是气体,水还是油。 四种可能的迹象(瓦斯油)中的一种可以被认为是错误指示器。