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    • 1. 发明申请
    • METHOD OF DETERMINING THE VERTICAL AND HORIZONTAL RESISTIVITY AND THE RELATIVE DIP IN ANISOTROPIC EARTH FORMATIONS
    • 确定各向异性地层中垂直和水平电阻率及相对延伸的方法
    • WO2004049010A1
    • 2004-06-10
    • PCT/US2003/037483
    • 2003-11-21
    • BAKER HUGHES INCORPORATED
    • FANINI, OttoMERCHANT, Gulamabbas, A.
    • G01V3/28
    • G01V3/28
    • The invention is a method of determining horizontal and vertical resistivity in an anisotropic formation using a combination of orientable triaxial and array antennae conveyed downhole. Measurements are taken at various azimuthal angles about a measuring device at a given depth. Values at each azimuthal orientation can be fit to a curve to yield information on the surrounding formation. Multiple measurements at a given depth and azimuthal orientation can be weighted to obtain an average value. Values from the curve fitting process are used in subsequent inversion processing and reduce the uncertainty of the inversion processing result. Utilization of a three dimensional geometry enables a unique resolution of the orientation of the principle axis of anisotropy, and consequently of horizontal and vertical resistivity, and dip.
    • 本发明是一种使用在井下传送的可定向三轴和阵列天线的组合确定各向异性地层中的水平和垂直电阻率的方法。 在一个给定深度的测量设备周围进行各种方位角测量。 在每个方位角方向上的值可以拟合到曲线上以产生关于周围地层的信息。 给定深度和方位角方向的多次测量可以加权以获得平均值。 来自曲线拟合过程的值在随后的反演处理中使用,并且减少了反演处理结果的不确定性。 利用三维几何形状可以实现各向异性主轴取向的独特分辨率,从而实现水平和垂直电阻率以及倾角的定向。
    • 3. 发明申请
    • METHOD AND APPARATUS FOR A MULTI-COMPONENT INDUCTION INSTRUMENT MEASURING SYSTEM FOR GEOSTEERING AND FORMATION RESISTIVITY DATA INTERPRETATION IN HORIZONTAL, VERTICAL AND DEVIATED WELLS
    • 用于多分量感应仪器测量系统的方法和装置,用于在水平,垂直和偏移的井中形成电阻率数据解释
    • WO2003025342A2
    • 2003-03-27
    • PCT/US2002/024781
    • 2002-08-05
    • BAKER HUGHES INCORPORATED
    • FANINI, OttoFORGANG, Stanislav, W.MERCHANT, Gulamabbas, A.KRIEGSHAUSER, BertholdYU, Liming
    • E21B47/00
    • G01V3/28
    • An improved induction tool for formation resistivity evaluations. The tool provides electromagnetic transmitters and sensors suitable fior transmitting and receiving magnetic fiels in radial directions that are orthogonal to the tool's longitudinal axis with minimal susceptibility to errors associated with parasitic eddy currents induced in the metal components surrounding the transmitter and receiver coils. The present invention provides increased effective tool surface impedance by increasing self-inductance of the paths in which induced eddy currents flow on the surface of the multi-component induction instruments. The tool enables downhole tool designers to build more effective and better-protected radial induction arrays for existing and future downhole instruments operating in the frequency and/or time domains. In this case the array measurements results contain information primarily about the formation's vertical resistivity. The tool makes its possible to combine radial arrays with coaxial arrays that conventianally measure horizontal formation resistivity. This combination enables obtaining a full resistivity tensor to evaluate formation anisotropy. The tool provides a composite non-conductive housing to reduce or even avoid them effects of parasitic eddy currents flowing on the tool surface. The tool provides a non-magnetic housing that is conductive which reduces the effects of conductive materials near coils and, primarily, the receiver. The tool provides a non-conductive coating is placed over the housing to prevent high frequency eddy currents from leaking from the housing in the conductive mud of the adjacent welbore and returning to the housing. The tool method uses measurements for geo-steering applications in vertical, horizontal and deviated well bores. Measurements are taken of time domain response into frequency domain and select a spectrum of interest. The tool provides a tuned, broadband or retunable coil and tuned, broadband or retunable source. The tool also provides a multi-layer flexible circuit board containing at least one of a coil, a selectable shield, a magnatic layer and tunable components. The tool also enables dual compensated measurement of array to improve signal to noise ratio and measurement stability to improve signal content with reservoir,geological and geophysical. The tool utilizes methods for application for geo-steering, drilling assistance and decisions. The tool provides a transverse magnetic path and in general any magnetic path combination which occurs in traverse plane perpendicular to the tool longitudinal axis. The tool method utilizes multiple frequency sequential or simultaneous measurements. The tool method utilizes measurements of an aaray combined with gyro, accelerometer, magnetometer and inclinometer data at same time. Various transmitter receiver combinations are provided to select sensitivity to a desired reservoir formation properties, for example, different orientation xy, xz, yz, 20-40, 20-90, and combinations, such as Symmetric-symmetric; Asymmetric-symmetric; and Asymmetric-asymmetric. Measurements made with a multi- component logging instrument when used in a substantially horizontal, vertical or deviated borehole in earth formations are diagnostic of the direction of resistive beds relative to the position of the borehole.
    • 改进的地层电阻率评估感应工具。 该工具提供电磁发射器和传感器,其适用于在径向方向上发射和接收磁场的电磁发射器和传感器,其垂直于工具的纵向轴线,对与在发射器和接收器线圈周围的金属部件中感应的寄生涡流有关的误差的影响最小。 本发明通过增加感应涡流在多部件感应仪器的表面上流动的路径的自感来提供增加的有效工具表面阻抗。 该工具使井下工具设计人员能够为在频率和/或时域工作的现有和未来的井下仪器构建更有效和更好保护的径向感应阵列。 在这种情况下,阵列测量结果包含主要关于地层垂直电阻率的信息。 该工具可以将径向阵列与同轴阵列结合在一起,这意味着测量水平地层电阻率。 这种组合使得能够获得全电阻率张量以评估地层各向异性。 该工具提供复合非导电外壳,以减少甚至避免它们在工具表面上流动的寄生涡流的影响。 该工具提供导电的非磁性壳体,其减少了线圈附近的导电材料和主要是接收器的影响。 该工具提供了非导电涂层放置在壳体上以防止高频涡流从相邻韦尔布尔的导电泥浆中的壳体泄漏并返回到壳体。 工具方法使用垂直,水平和偏斜井眼中的地理转向应用的测量。 对时域响应进行频域测量,并选择感兴趣的频谱。 该工具提供一个调谐,宽带或可重复的线圈和调谐,宽带或可重复的来源。 该工具还提供了包含线圈,可选屏蔽,电位层和可调组件中的至少一个的多层柔性电路板。 该工具还支持阵列的双重补偿测量,以提高信噪比和测量稳定性,以改善储层,地质和地球物理学的信号含量。 该工具利用地理转向,钻井辅助和决策应用的方法。 该工具提供横向磁路,并且通常在垂直于工具纵向轴线的横动平面中发生任何磁路组合。 该工具方法利用多次频率顺序或同时测量。 该工具方法同时使用与陀螺仪,加速度计,磁力计和倾斜仪数据相结合的aaray测量。 提供各种发射器接收器组合以选择对期望的储层形成性质的灵敏度,例如不同的取向xy,xz,yz,20-40,20-90以及诸如对称对称的组合; 非对称对称; 和非对称不对称。 使用多组分测井仪器进行测量,当用于地球上基本水平,垂直或偏斜的井眼时
    • 5. 发明申请
    • MEASURING ACCELERATION USING INTERFEROMETRY WITH REDUCED ENVIRONMENTAL EFFECTS
    • 用干扰减少的环境影响测量加速度
    • WO2017132252A1
    • 2017-08-03
    • PCT/US2017/014929
    • 2017-01-25
    • BAKER HUGHES INCORPORATED
    • ADAMS, Robert W.EDWARDS, Carl M.CSUTAK, SebastianWELLMANN, FelixFANINI, Otto
    • G01P15/14G01B9/02G01V8/02G01H17/00
    • G01P15/03G01H9/00G01P1/006G01P15/093G01P21/00G01V7/00G01V2210/1429
    • An apparatus for measuring acceleration includes: a reference cavity having a first fixed reflecting surface and a second fixed reflecting surface; a sense cavity having a fixed reflecting surface and a non-fixed reflecting surface, the non-fixed reflecting surface being configured to be displaced when subject to an acceleration force; a light source to illuminate the reference and sense cavities; a controller to vary a wavelength of light emitted by the light source and/or an index of refraction of an optical medium of the cavities; a photodetector to detect light emitted by the reference and sense cavities; an interferometer sensor to measure using the detected light, for each variation of the wavelength of light and/or the index of refraction a reference displacement of the reference cavity and a sense displacement of the sense cavity; and a processor to calculate the acceleration using each of the reference displacements and the sense displacements.
    • 一种用于测量加速度的装置包括:具有第一固定反射表面和第二固定反射表面的参考腔; 具有固定反射表面和非固定反射表面的感测腔,所述非固定反射表面被配置为在受到加速力时被移位; 照亮参考和感测腔的光源; 控制器,用于改变由所述光源发射的光的波长和/或所述腔的光学介质的折射率; 光电检测器,用于检测由参考腔和感测腔发射的光; 干涉仪传感器,用于使用检测到的光来测量光的波长的每个变化和/或折射率,参考空腔的参考位移和感测空腔的感测位移; 以及处理器,用于使用每个参考位移和感测位移来计算加速度。