Downhole pressure compensator and method of same
    62.
    发明公开
    Downhole pressure compensator and method of same 审中-公开
    井下压力补偿器及其方法

    公开(公告)号:EP2565374A1

    公开(公告)日:2013-03-06

    申请号:EP11290384.4

    申请日:2011-08-29

    IPC分类号: E21B47/01 E21B47/06 G01L19/06

    摘要: The techniques herein relate to a pressure compensation system for a sensor in a wellbore (106) having a wellbore fluid (111) therein. The system includes a downhole tool (104) and at least one pressure compensator (112) positionable therein. The pressure compensator includes a first compensating fluid section (216) having a first compensating fluid (238) therein, a first pressure compensation section having a first pressure regulation device (226) for adjusting a compensation pressure of the first compensating fluid based on a wellbore pressure of the wellbore fluid, at least one second compensating fluid section (218) having a second compensating fluid (252) therein, and at least one second pressure compensation section having a second pressure regulation device (246) for adjusting a sensor pressure of the second compensating fluid based on the compensation pressure of the first compensating fluid.

    摘要翻译: 本文的技术涉及用于井眼(106)中的传感器的压力补偿系统,所述井眼(106)中具有井眼流体(111)。 该系统包括井下工具(104)和可定位在其中的至少一个压力补偿器(112)。 所述压力补偿器包括其中具有第一补偿流体(238)的第一补偿流体部分(216),具有第一压力调节装置(226)的第一压力补偿部分(226),所述第一压力调节装置用于基于井眼调节第一补偿流体的补偿压力 井筒流体的压力,其中具有第二补偿流体(252)的至少一个第二补偿流体段(218)以及具有第二压力调节设备(246)的至少一个第二压力补偿段,所述第二压力补偿段用于调节井筒流体的传感器压力 基于第一补偿流体的补偿压力计算第二补偿流体。

    OPTICAL FIBER EQUIPPED TUBING AND METHODS OF MAKING AND USING
    65.
    发明授权
    OPTICAL FIBER EQUIPPED TUBING AND METHODS OF MAKING AND USING 有权
    与光纤EQUIPPED管道,其制造方法及用途

    公开(公告)号:EP1743081B1

    公开(公告)日:2010-06-16

    申请号:EP05732292.7

    申请日:2005-04-22

    IPC分类号: E21B17/20 E21B47/12

    CPC分类号: E21B17/206 E21B47/123

    摘要: The present invention relates to an optical fiber equipped tubing and methods of making and using the same. The optical fiber equipped tubing comprises a fiber optic tube deployed within a tubular, the fiber optic tube having at least one optical fiber disposed within a duct, the duct typically being a metallic metal compatible with wellbore environments. The present invention also relates to a method of making an optical fiber equipped tubing comprising pumping a fluid into a tubular and deploying a fiber optic tube into the tubular by propelling it in the flow of the pumped fluid. The present invention also provides a method of communicating in wellbore using a fiber optic tube disposed within a wellbore tubular. In certain embodiments, this communication may be combined with a wireless communication system at the surface. In certain embodiments, the tubular may be coiled tubing and the fiber optic tube may be deployed in the coiled tubing while the tubing is spooled on a reel or while the tubing is deployed in a wellbore.

    RESONANCE-BASED INVERSION OF ACOUSTIC IMPEDANCE OF ANNULUS BEHIND CASING
    70.
    发明公开
    RESONANCE-BASED INVERSION OF ACOUSTIC IMPEDANCE OF ANNULUS BEHIND CASING 审中-公开
    基于共振的环形背壳声阻抗反演

    公开(公告)号:EP3179277A1

    公开(公告)日:2017-06-14

    申请号:EP15290308.4

    申请日:2015-12-11

    IPC分类号: G01V1/50 E21B47/00

    摘要: Techniques involve obtaining acoustic data from an acoustic logging tool, where the acoustic data includes waves reflected from the casing, the annular fill material, the formation, and/or interfaces between any of the casing, the annular fill material, one or more interfaces between any of the mud, the casing, and the annular fill material. Techniques include normalizing the acoustic wave to result in a normalized wave having a comparable spectral shape with a reference wave, and comparing the normalized wave with the reference wave. The reference wave may be generated or modeled or produced from a look-up table or database, and may be estimated based on initial estimates of wellbore parameters. Based on the comparison of the normalized wave with the reference wave, a best-fit reference wave substantially matching the normalized wave may be identified. The best-fit reference wave may correspond with a thickness of the casing, an acoustic impedance of the annular fill material, and an acoustic impedance of mud.

    摘要翻译: 技术涉及从声学测井工具获取声学数据,其中声学数据包括从套管,环形填充材料,地层和/或壳体,环形填充材料中的任一个,以及环形填充材料之间的一个或多个界面 任何泥浆,套管和环形填充材料。 技术包括归一化声波以产生具有与参考波相当的光谱形状的归一化波,并将归一化波与参考波进行比较。 参考波可以从查找表或数据库中生成或建模或生成,并且可以基于井筒参数的初始估计来估计。 基于归一化波与参考波的比较,可以识别与归一化波基本匹配的最佳拟合参考波。 最佳拟合参考波可以对应于壳体的厚度,环形填充材料的声学阻抗和泥浆的声学阻抗。