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    • 6. 发明申请
    • STRUCTURE MONITORING
    • 结构监测
    • US20140022530A1
    • 2014-01-23
    • US13944469
    • 2013-07-17
    • Chevron USA Inc.Silixa Ltd.
    • Mahmoud FarhadiroushanDaniel FinferYousif KamilRoy Lester Kutlik
    • G01N29/24
    • G01N29/2418E21B47/0006E21B47/091G01D5/35383G01H9/004G01S5/18G01S5/186G01S5/26G01S5/30
    • A method and apparatus for monitoring a structure using an optical fiber based distributed acoustic sensor (DAS) extending along the length of the structure. The DAS is able to resolve a separate acoustic signal with a spatial resolution of 1 m along the length of the fibre, and hence is able to operate with an acoustic positioning system to determine the position of the riser with the same spatial resolution. In addition, the fiber can at the same time also detect much lower frequency mechanical vibrations in the riser, for example such as resonant mode vibrations induced by movement in the surrounding medium. By using vibration detection in combination with acoustic positioning then overall structure shape monitoring can be undertaken, which is useful for vortex induced vibration (VIV) visualisation, fatigue analysis, and a variety of other advanced purposes. The structure may be a sub-sea riser.
    • 一种用于使用沿着结构的长度延伸的基于光纤的分布式声学传感器(DAS)来监视结构的方法和装置。 DAS能够沿着光纤的长度解析出具有1m空间分辨率的单独的声信号,因此能够利用声学定位系统来操作,以确定具有相同空间分辨率的提升器的位置。 此外,光纤同时也可以检测提升管中的低频机械振动,例如诸如周围介质中的运动引起的共振模式振动。 通过使用振动检测与声学定位结合,可以进行整体结构形状监测,这对于涡流诱发振动(VIV)可视化,疲劳分析和各种其他先进目的是有用的。 该结构可以是海底立管。
    • 7. 依法登记的发明
    • Blending of economic reduced oxygen, summer gasoline
    • 混合经济减氧,夏季汽油
    • USH2210H
    • 2008-02-05
    • US21009002
    • 2002-08-02
    • CHEVRON USA INC
    • BRUNDAGE SCOTT RKOHLER DAVID A
    • C10L1/16
    • C10L1/06
    • Provided is a novel summer gasoline composition which is substantially free of oxygenates, contains less than 20 ppm sulfur, and is in compliance with the California Phase 3 Predictive Model. The gasoline composition is suitable for use in the summer, i.e., having a Reid vapor pressure of 7.2, and more preferably 7.0, or less, but also offers the advantages of low emissions while being substantially free of oxygenates. The method for blending the gasoline comprises blending streams from a refinery in a controlled manner to maintain compliance with the California Phase 3 Predictive Model.
    • 提供了一种新型的夏季汽油组合物,其基本上不含氧化物,含有少于20ppm的硫,并且符合加州3期预测模型。 汽油组合物适用于夏季,即Reid蒸汽压为7.2,更优选7.0或更低,但也具有低排放的优点,同时基本上不含氧化物。 混合汽油的方法包括以受控的方式混合来自炼油厂的流,以保持与加州3期预测模型的一致性。
    • 8. 发明申请
    • Heterodiamondoids
    • 异种类
    • US20040059145A1
    • 2004-03-25
    • US10622130
    • 2003-07-16
    • CHEVRON USA INC.
    • Shenggao LiuRobert M. CarlsonJeremy E. Dahl
    • C07F005/02C07F009/02C07F009/70C07C035/22C07F007/04
    • C07C49/617C07C23/20C07C49/423C07C49/613C07C61/29C07D221/22C07D311/96C07D313/06C07D335/04C07D471/10C07F9/65683
    • This invention is related to heteroatom containing diamondoids (i.e., nullheterodiamondoidsnull) which are compounds having a diamondoid nucleus in which one or more of the diamondoid nucleus carbons has been substitutionally replaced with a noncarbon atom. These heteroatom substituents impart desirable properties to the diamondoid. In addition, the heterodiamondoids are functionalized affording compounds carrying one or more functional groups covalently pendant therefrom. This invention is further related to polymerizable functionalized heterodiamondoids. In a preferred aspect of this invention the diamondoid nuclei are triamantane and higher diamondoid nuclei. In another preferred aspect, the heteroatoms are selected to give rise to diamondoid materials which can serve as n- and p-type materials in electronic devices can serve as optically active materials.
    • 本发明涉及含有杂原子的类金刚石(即“异二亚类”),它们是具有金刚石核的化合物,其中一个或多个金刚石核碳被替代为非碳原子。 这些杂原子取代基赋予金刚石所需的性质。 此外,异二亚甲基二羧酸被官能化,从而提供携带一个或多个共价悬挂的官能团的化合物。 本发明进一步涉及可聚合的官能化异二聚体。 在本发明的优选方面,金刚石核是三金刚烷和更高的金刚石核。 在另一个优选的方面,选择这些杂原子以产生可用作电子器件中的n-型和p-型材料的类金刚石材料,可用作光学活性材料。