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21. 发明申请

WO2008039965A3 BROADBAND RESISTIVITY INTERPRETATION 审中-公开
标题翻译：宽带电阻解释
公开(公告)号：WO2008039965A3
公开(公告)日：2008-10-16
申请号：PCT/US2007079821
申请日：2007-09-28
申请人： BAKER HUGHES INC
发明人： MEYER WALLACE H , HERRICK DAVID C , ITSKOVICH GREGORY B
IPC分类号： G01V3/00 , G01V1/40 , G01V3/10
CPC分类号： G01V3/30 , Y02A90/342
摘要： Resistivity measurements are made at a plurality of frequencies. An asymptotic high- frequency limit is determined and the electrical efficiency is estimated as a ratio of the high frequency resistivity limit to the low frequency resistivity. From the electrical efficiency, petrophysical parameters of a rock such as porosity and water saturation can be estimated.
摘要翻译：在多个频率进行电阻率测量。确定渐近的高频极限，并且将电效率估计为高频电阻率极限与低频电阻率的比率。从电效率可以估算岩石的岩石物理参数，例如孔隙度和水分饱和度。

22. 发明申请

WO02088775A9 ESTIMATION OF TRANSVERSAL MOTION OF THE NMR TOOL DURING LOGGING 审中-公开
标题翻译：记录期间NMR工具的横向运动估计
公开(公告)号：WO02088775A9
公开(公告)日：2004-08-26
申请号：PCT/US0213787
申请日：2002-05-01
申请人： BAKER HUGHES INC
发明人： BEARD DAVID , ITSKOVICH GREGORY B , REIDERMAN ARCADY
IPC分类号： G01R33/44 , G01V3/32
CPC分类号： G01V3/32 , G01N24/081
摘要： NMR measurements made with a moving tool are affected by incomplete polarization of the nuclear spins in the region where the Larmor frequency of static field matches the RF signal frequency. Simulation results show that the in-phase and quadrature components of spin echo signals are affected by the velocity of lateral motion of a logging tool in a borehole. A phase drift indicator is obtained by summing the quadrature and in-phase components over a window and taking the ratio of the windowed sums. The phase drift indicator shows an increase with time. In a tool with a gradient magnetic field, the phase drift indicator increases with time even for no tool motion. The reduction in magnitude of spin echo data due to tool motion alone may be obtained by comparing the magnitude of simulated echoes with and without tool motion.
摘要翻译：使用移动工具进行的NMR测量受静态场拉莫尔频率与RF信号频率匹配的区域中的核自旋的不完全极化的影响。模拟结果表明，自旋回波信号的同相和正交分量受井眼测井工具横向运动速度的影响。通过对窗口上的正交和同相分量进行求和并获取窗口和的比值来获得相位漂移指示符。相位漂移指示器随着时间的推移而增加。在具有梯度磁场的工具中，即使没有刀具运动，相位漂移指示器随时间增加。可以通过比较具有和不具有工具运动的模拟回波的幅度来获得由于单独的工具运动引起的自旋回波数据的幅度的减小。

23. 发明申请

WO2008144233A8 DUAL STANDOFF RESISTIVITY IMAGING INSTRUMENT, METHODS AND COMPUTER PROGRAM PRODUCTS 审中-公开
标题翻译：双标准电阻成像仪器，方法和计算机程序产品
公开(公告)号：WO2008144233A8
公开(公告)日：2009-08-27
申请号：PCT/US2008062929
申请日：2008-05-07
申请人： BAKER HUGHES INC
发明人： ITSKOVICH GREGORY B , FORGANG STANISLAV W , BESPALOV ALEXANDRE N
IPC分类号： G01V3/00
CPC分类号： G01V3/20
摘要： A resistivity imaging apparatus includes: a first sensor electrode disposed on an electrode pad and positioned at a first standoff; a second sensor electrode disposed on the electrode pad and adjacent the first sensor electrode, the second sensor electrode positioned at a second standoff; and a return electrode disposed on the electrode pad, wherein the sensor electrodes and the return electrode are configured for injecting current into a formation and receiving a signal from the formation. Other embodiments, methods and computer program products are disclosed.
摘要翻译：电阻率成像装置包括：第一传感器电极，设置在电极焊盘上并定位在第一间隔处; 第二传感器电极，设置在所述电极焊盘上并与所述第一传感器电极相邻，所述第二传感器电极位于第二间隔处; 以及设置在所述电极焊盘上的返回电极，其中所述传感器电极和所述返回电极被配置为将电流注入地层并接收来自所述地层的信号。公开了其它实施例，方法和计算机程序产品。

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