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    • 24. 发明申请
    • HYDROCARBON MONITORING CABLE
    • 油气监测电缆
    • WO2009060411A2
    • 2009-05-14
    • PCT/IB2008/054651
    • 2008-11-06
    • SCHLUMBERGER CANADA LIMITEDSERVICES PETROLIERS SCHLUMBERGERSCHLUMBERGER HOLDINGS LIMITEDSCHLUMBERGER TECHNOLOGY B.V.PRAD RESEARCH AND DEVELOPMENT LIMITEDVARKEY, Joseph
    • VARKEY, Joseph
    • G02B6/02G02B6/44E21B47/06
    • G02B6/4492E21B47/065E21B47/123G01D5/3537G01M11/085G02B6/4416
    • A hydrocarbon monitoring cable including resistance to development of defects in a fiber optic core thereof. The core defect resistance may be in the form of resistance to defect causing agents of a downhole environment such as hydrogen. This may be obtained through the use of a carbon layer about the fiber optic core. However, in light of the differing coefficients of thermal expansion between such a carbon layer and an outer polymer jacket, an intermediate polymer layer of a third coefficient of thermal expansion may be disposed between the carbon and jacket layers. Thus, the intermediate polymer layer may be of a third coefficient of thermal expansion selected so as to avoid fiber optic defect causing thermal expansion from the downhole environment itself. Additionally, the monitoring cable may include an electrically conductive layer about the fiber optic core that is positively charged to repel other positively charged fiber optic defect causing agents of the downhole environment. Furthermore, a polymer-based absorbing layer for absorbing such defect causing agents may be disposed about the fiber optic core for protection.
    • 一种碳氢化合物监测电缆,包括耐发展光纤芯中的缺陷。 核心缺陷阻力可以是对诸如氢气等井下环境的缺陷引发剂的抵抗力的形式。 这可以通过使用围绕光纤芯的碳层获得。 然而,鉴于这种碳层和外部聚合物护套之间的热膨胀系数不同,可以在碳层和护套层之间设置第三热膨胀系数的中间聚合物层。 因此,中间聚合物层可以具有选择的第三热膨胀系数,以避免光纤缺陷引起井下环境本身的热膨胀。 另外,监测电缆可以包括围绕光纤芯的导电层,其被带正电以排斥导致井下环境的代理的其它带正电的光纤缺陷。 此外,用于吸收这种缺陷引发剂的聚合物基吸收层可以设置在光纤芯周围用于保护。