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    • 2. 发明申请
    • IMPROVED CASING DETECTION TOOLS AND METHODS
    • 改进的壳体检测工具和方法
    • WO2013025222A3
    • 2014-03-20
    • PCT/US2011048317
    • 2011-08-18
    • HALLIBURTON ENERGY SERV INCBITTAR MICHAEL SWU HSU-HSIANG
    • BITTAR MICHAEL SWU HSU-HSIANG
    • G01V3/30
    • E21B47/04E21B7/04E21B43/2406E21B47/02216
    • Methods and tools for detecting casing position downhole is presented. The method utilizes electromagnetic (EM) tools with tilted antenna systems to detect casing position. Sometimes titled antenna designs also increase EM tools' sensitivity to formation parameters, which can lead to false signals for casing detection. In addition, it is very difficult to distinguish measured signals between a casing source and a formation source. The methods presented help to distinguish between the two sources more clearly. The methods and tools presented also help to minimize those environmental effects, as well as enhance the signals from a surrounding conductive casing. The methods herein provide ideas of EM tool's design to precisely determine casing position within a certain distance to casing position.
    • 提出了井下套管位置检测方法和工具。 该方法利用具有倾斜天线系统的电磁(EM)工具来检测壳体位置。 有时称为天线设计还增加了EM工具对地层参数的敏感性,这可能导致套管检测的错误信号。 另外,很难区分套管源和地层源之间的测量信号。 所提出的方法有助于更清楚地区分两个来源。 所提出的方法和工具还有助于最小化这些环境影响,以及增强来自周围导电套管的信号。 这里的方法提供了EM工具设计的想法,以精确确定与套管位置一定距离内的套管位置。
    • 3. 发明申请
    • TILTED ANTENNA LOGGING SYSTEMS AND METHODS YIELDING ROBUST MEASUREMENT SIGNALS
    • 倾斜天线测井系统和方法测量稳定测量信号
    • WO2014003702A1
    • 2014-01-03
    • PCT/US2012/043943
    • 2012-06-25
    • HALLIBURTON ENERGY SERVICES, INC.WU, Hsu-HsiangDONDERICI, BurkayBITTAR, Michael, S.
    • WU, Hsu-HsiangDONDERICI, BurkayBITTAR, Michael, S.
    • G01V3/38
    • E21B47/09G01B5/004G01B7/004G01V3/28G01V3/38
    • Disclosed herein are electromagnetic logging systems and methods that provide a set of signals that robustly approximate the response of a model tool employing orthogonal triads of point-dipole antennas. One illustrative method embodiment obtains an azimuthally sensitive electromagnetic logging tool's signal measurements as a function of position in a borehole, the tool having at least two spacing distances (d1, d2) between transmit and receive antennas. Orthogonal direct coupling measurements (Vxx, Vyy, Vzz) are derived from the signal measurements and converted into a set of robust signals, the set including: a ratio between Vzz coupling components at different spacing distances, a ratio between Vxx and Vzz coupling components, a ratio between Vyy and Vzz coupling components, and a ratio between Vxx and Vyy coupling components. The set may include an additional robust signal having a ratio between a sum of cross-coupling components Vxz+Vzx or Vyz+Vzy and a sum of orthogonal direct coupling components.
    • 本文公开了电磁测井系统和方法,其提供一组鲁棒逼近使用正交三极管点对偶天线的模型工具的响应的信号。 一个示例性方法实施例获得作为钻孔中位置的函数的方位敏感电磁测井工具的信号测量值,该工具在发射天线和接收天线之间具有至少两个间隔距离(d1,d2)。 正交直接耦合测量(Vxx,Vyy,Vzz)是从信号测量得到的,并转换为一组鲁棒的信号,该组包括:不同间隔距离的Vzz耦合分量之间的比值,Vxx和Vzz耦合分量之间的比值, Vyy和Vzz耦合分量之间的比率,以及Vxx和Vyy耦合分量之间的比率。 该集合可以包括具有交叉耦合分量Vxz + Vzx或Vyz + Vzy之和与正交直接耦合分量的和之间的比率的附加鲁棒信号。
    • 4. 发明申请
    • APPARATUS AND METHODS FOR MONITORING A CORE DURING CORING OPERATIONS
    • CORING操作期间监测核心的装置和方法
    • WO2013070206A1
    • 2013-05-16
    • PCT/US2011/059950
    • 2011-11-09
    • HALLIBURTON ENERGY SERVICES, INC.BITTAR, Michael, S.WEAVER, Gary, E.
    • BITTAR, Michael, S.WEAVER, Gary, E.
    • G01V3/18E21B47/00
    • G01V3/30E21B25/00E21B47/12
    • One method of monitoring a formation core during coring operations can include measuring resistivities of a formation internal and external to a core barrel assembly, comparing the resistivities of the formation internal and external to the core barrel assembly, and determining a displacement of the core into the core barrel assembly, based at least in part on the comparing, while the core is being cut. A formation core analysis system can include multiple longitudinally spaced apart sets of transmitters and receivers which measure resistivity of a core while the core displaces into a core barrel assembly, and multiple longitudinally spaced apart sets of transmitters and receivers which measure resistivity of a formation external to the core barrel assembly while a coring bit penetrates the formation. A speed of displacement of the core may be indicated by differences in time between measurements taken via the different sets as the core displaces.
    • 在取芯操作期间监测地层芯的一种方法可以包括测量芯筒组件内部和外部的地层的电阻率,将内部和外部的地层的电阻率与芯筒组件进行比较,以及确定芯体的位移 至少部分基于比较核心筒组件,而核心正在被切割。 地层核心分析系统可以包括多个纵向间隔开的发射器和接收器组,其在芯移动到芯筒组件中时测量芯的电阻率,以及多个纵向间隔开的发射器和接收器组,其测量外部的地层的电阻率 核心筒组件,同时取芯钻头穿透地层。 核心的位移速度可以由核心置换时通过不同组合进行的测量之间的时间差异来表示。