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31. 发明授权

US08634272B2 Televiewer image wood-grain reduction techniques 有权
公开(公告)号：US08634272B2
公开(公告)日：2014-01-21
申请号：US12760333
申请日：2010-04-14
申请人： Roger R. Steinsiek , Jason M. Harris , Jinsong Zhao , Douglas J. Patterson , James B. Domnanish
发明人： Roger R. Steinsiek , Jason M. Harris , Jinsong Zhao , Douglas J. Patterson , James B. Domnanish
IPC分类号： G01V1/00
CPC分类号： G01V1/345 , B06B1/0622 , G01V1/40 , G01V1/48
摘要： Measurements made by a transducer assembly for downhole imaging are affected by reverberations between the transducer and the window on the outside of the assembly. The reverberations result in a stationary noise on the image. Hardware solutions to improve signal-to-noise ratio includes using a composite transducer, adjusting the distance between the transducer and the window. SNR can also be improved by processing techniques that include stacking, fitting a sinusoid to the reverberation, by envelope peak detection, and by applying a notch filter.

32. 发明授权

US08555966B2 Formation testing apparatus and methods 有权
标题翻译：地层试验装置及方法
公开(公告)号：US08555966B2
公开(公告)日：2013-10-15
申请号：US12120106
申请日：2008-05-13
申请人： Jorge O. Maxit , Jinsong Zhao
发明人： Jorge O. Maxit , Jinsong Zhao
IPC分类号： E21B47/00 , E21B49/08
CPC分类号： E21B49/087
摘要： A formation testing apparatus and method are disclosed. In one aspect, a fluid is drawn from a formation, one or more sensors measure pressure of the fluid during the during drawing of the fluid, and a processor estimates an inflection point from the pressure measurements and controls the drawing of the fluid from the inflection point until the pressure of the fluid drops to a selected level.
摘要翻译：公开了一种地层测试装置和方法。在一个方面，流体从地层抽出，一个或多个传感器在流体抽取期间测量流体的压力，并且处理器从压力测量值估计拐点，并控制流体从拐点的拉伸直到液体的压力下降到选定的水平。

33. 发明申请

US20120059616A1 Image Enhancement for Resistivity Features in Oil-Based Mud Image 有权
标题翻译：油基泥浆图像中电阻率特征的图像增强
公开(公告)号：US20120059616A1
公开(公告)日：2012-03-08
申请号：US13221251
申请日：2011-08-30
申请人： Jinsong Zhao
发明人： Jinsong Zhao
IPC分类号： G06F19/00
CPC分类号： G01V3/20 , E21B49/00 , G01R35/00
摘要： Resistivity images obtained by an imaging device in a borehole having oil-based mud may be of poor quality due to standoff variations, leakage currents and random noise. By processing the data using steps including median filtering, entropy equalization and bandpass filtering, the image quality can be considerably improved.
摘要翻译：通过成像装置在具有油基泥浆的钻孔中获得的电阻率图像可能由于间隙变化，泄漏电流和随机噪声而具有差的质量。通过使用包括中值滤波，熵均衡和带通滤波的步骤处理数据，可以显着提高图像质量。

34. 发明申请

US20120033528A1 Pipelined Pulse-Echo Scheme for an Acoustic Image Tool for Use Downhole 有权
标题翻译：用于井下使用的声像仪的流水线脉冲回波方案
公开(公告)号：US20120033528A1
公开(公告)日：2012-02-09
申请号：US13195694
申请日：2011-08-01
申请人： Jinsong Zhao , James V. Leggett, III
发明人： Jinsong Zhao , James V. Leggett, III
IPC分类号： G01V1/48
CPC分类号： E21B47/082 , G01V1/44 , G01V1/50
摘要： The present disclosure is related to apparatuses and methods for estimating borehole parameters using a plurality of reflections caused by a plurality of acoustic pulses. The reflections may overlap each other and/or the acoustic pulses. The methods may include estimating an envelope of the received acoustic signal at the at least one element of the array of transducers; and estimating at least one arrival time of at least one of the plurality of overlapping events from the envelope of the received acoustic signals, the arrival times being characteristic of the geometry of the borehole. The method may also include imaging the borehole wall. The apparatus may include an array of transducers on a rotatable transducer assembly with at least one element on the array configured to generate a plurality of acoustic pulses and receive reflections and a processor configured to perform the method.
摘要翻译：本公开涉及使用由多个声脉冲引起的多个反射来估计钻孔参数的装置和方法。反射可能彼此重叠和/或声脉冲。所述方法可以包括估计在所述换能器阵列的所述至少一个元件处的所接收的声信号的包络; 以及从所接收的声学信号的包络估计所述多个重叠事件中的至少一个的至少一个到达时间，所述到达时间是所述钻孔的几何特征。该方法还可以包括对钻孔壁进行成像。该装置可以包括在可旋转换能器组件上的换能器阵列，阵列上的至少一个元件配置成产生多个声脉冲并接收反射，以及配置成执行该方法的处理器。

35. 发明授权

US08050865B2 System and method for measuring resistivity parameters of an earth formation 失效
标题翻译：用于测量地层电阻率参数的系统和方法
公开(公告)号：US08050865B2
公开(公告)日：2011-11-01
申请号：US12262330
申请日：2008-10-31
申请人： Jinsong Zhao , Jorge O. Maxit
发明人： Jinsong Zhao , Jorge O. Maxit
IPC分类号： G01V1/40
CPC分类号： G01V3/24
摘要： Disclosed herein is a method of measuring a resistivity parameter of an earth formation. The method includes: applying a first electric measurement current including a first series of pulses to a first electrode and inducing a first formation current in the earth formation; applying a second electric measurement current including a second series of pulses to a second electrode and inducing a second formation current in the earth formation, the first series of pulses and the second series of pulses occupying distinct portions of a time domain in a selected time window; measuring the first measurement current, the first formation current, the second measurement current and the second formation current by coherent in-phase demodulation; and calculating at least one resistivity parameter by i) comparing the first measurement current to the first formation current and ii) comparing the second measurement current to the second formation current. A system for measuring a resistivity parameter of an earth formation is also provided.
摘要翻译：本文公开了一种测量地层电阻率参数的方法。该方法包括：将包括第一系列脉冲的第一电测量电流施加到第一电极并且在地层中引起第一形成电流; 将包括第二系列脉冲的第二电测量电流施加到第二电极并且在地层中引起第二形成电流，所述第一脉冲序列和所述第二脉冲序列占据选定时间窗中的时域的不同部分 ; 通过相干同相解调测量第一测量电流，第一地层电流，第二测量电流和第二地层电流; 以及通过以下步骤来计算至少一个电阻率参数：i）将所述第一测量电流与所述第一形成电流进行比较，以及ii）将所述第二测量电流与所述第二形成电流进行比较。还提供了一种用于测量地层电阻率参数的系统。

36. 发明申请

US20110022318A1 High Resolution Sensor with Scalable Sample Rate 有权
标题翻译：具有可扩展采样率的高分辨率传感器
公开(公告)号：US20110022318A1
公开(公告)日：2011-01-27
申请号：US12857212
申请日：2010-08-16
申请人： Jinsong Zhao , Jorge Maxit
发明人： Jinsong Zhao , Jorge Maxit
IPC分类号： G06F15/00 , G01K13/00 , G01L9/00 , G01V9/00 , E21B47/00
CPC分类号： E21B47/06 , E21B47/12
摘要： Apparatus and methods of providing a selected sample rate for sensor measurements are provided, which in one aspect may include a circuit configured to receive sensor signals as a first series of count rates corresponding to sensor the sensor measurements, each count rate representing a value of a parameter of interest, at least two accumulators configured to alternately accumulate the count rates in the series of count rates over a time period that corresponds to a selected sample rate and a controller configured to control the time periods for the at least two accumulators.
摘要翻译：提供了提供用于传感器测量的选择的采样率的装置和方法，其在一个方面可以包括被配置为接收传感器信号的电路作为对应于传感器测量的第一系列计数速率，每个计数率表示参数，至少两个累加器被配置为在对应于所选择的采样率的时间段内交替地累积所述一系列计数速率中的计数速率，以及配置成控制所述至少两个累加器的时间段的控制器。

37. 发明授权

US07859265B2 One row wavelet sensor layout for resistivity imaging 有权
标题翻译：电阻率成像的一行小波传感器布局
公开(公告)号：US07859265B2
公开(公告)日：2010-12-28
申请号：US11769300
申请日：2007-06-27
申请人： Jinsong Zhao , Jorge O. Maxit
发明人： Jinsong Zhao , Jorge O. Maxit
IPC分类号： G01V3/20
CPC分类号： G01V3/20
摘要： A sensor electrode for imaging a formation. The sensor includes a geometry either reduces or substantially limits spatial aliasing in formation data. The aliasing is the result of imaging the formation with an array of the sensor electrodes.
摘要翻译：一种用于成像成像的传感器电极。该传感器包括几何形状，可减少或基本上限制地层数据中的空间混叠。混叠是利用传感器电极阵列成像成像的结果。

38. 发明申请

US20090322337A1 Analog Front-End Coherent In-Phase Demodulation Data Acquisition System for Resistivity Image Tools 有权
标题翻译：用于电阻率图像工具的模拟前端相干同相解调数据采集系统
公开(公告)号：US20090322337A1
公开(公告)日：2009-12-31
申请号：US12165264
申请日：2008-06-30
申请人： Jinsong Zhao , Stanislav Forgang
发明人： Jinsong Zhao , Stanislav Forgang
IPC分类号： G01V3/06
CPC分类号： G01V3/24
摘要： A method and system for measuring formation resisitivity is achieved by introducing an electrical signal into the formation. The current of the introduced electrical signal is then sensed, producing an analog voltage signal as a measurement of the formation. The introduced electrical signal is compared with the measured signal of the formation. The comparison is made in a quadrature demodulation device, producing an in-phase demodulated signal. A quasi-direct-current signal is extracted from the in-phase demodulated signal, producing an analog measurement related to the resistivity of the formation.
摘要翻译：通过将电信号引入到地层中来实现测量地层电阻率的方法和系统。然后感测引入的电信号的电流，产生作为地层测量的模拟电压信号。将引入的电信号与地层的测量信号进行比较。在正交解调装置中进行比较，产生同相解调信号。从同相解调信号中提取准直流信号，产生与地层电阻率相关的模拟测量。

39. 发明申请

US20090205822A1 Downhole Local Mud Weight Measurement Near Bit 有权
标题翻译：井下本地泥浆重量测量近位
公开(公告)号：US20090205822A1
公开(公告)日：2009-08-20
申请号：US12372282
申请日：2009-02-17
申请人： Rocco DiFoggio , Jinsong Zhao
发明人： Rocco DiFoggio , Jinsong Zhao
IPC分类号： E21B47/00 , E21B47/06 , G06F19/00
CPC分类号： E21B21/08 , E21B47/06
摘要： A method for detecting a change in a wellbore fluid includes estimating at least two pressure differences in the wellbore fluid and estimating a change in a density of the fluid using the at least two pressure differences. The density change may be estimated by the equation, Δρ=(ΔPbefore—influx−ΔPafter—influx)/(g×ΔTVD), wherein ΔP is a fluid pressure difference between two points along the wellbore, ρ is a mean value of density of the fluid between the two points, g is gravity and ΔTVD is a vertical distance between the two points. The method may include estimating a density change using an estimated inclination of the wellbore. An apparatus for estimating density changes includes at least two axially spaced apart pressure sensors. The sensor positions may be switched to estimate a correction term to reduce a relative offset between the two pressure sensors.
摘要翻译：用于检测井眼流体变化的方法包括估计井眼流体中的至少两个压差，并使用至少两个压力差来估计流体密度的变化。密度变化可以通过等式Deltarho =（DeltaPbefore influx-DeltaPafter 流入）/（gxDeltaTVD）来估计，其中DeltaP是两点之间的流体压力差沿着井眼，rho是两点之间流体密度的平均值，g是重力，DeltaTVD是两点之间的垂直距离。该方法可以包括使用估计的井筒倾角来估计密度变化。用于估计密度变化的装置包括至少两个轴向间隔开的压力传感器。可以切换传感器位置以估计校正项以减小两个压力传感器之间的相对偏移。

40. 发明申请

US20050251378A1 Electromagnetic simulator systems and methods 失效
标题翻译：电磁仿真器系统及方法
公开(公告)号：US20050251378A1
公开(公告)日：2005-11-10
申请号：US11122559
申请日：2005-05-04
申请人： Jinsong Zhao
发明人： Jinsong Zhao
IPC分类号： G06F17/50
CPC分类号： G06F17/5036
摘要： The present invention provides methods and apparatuses for an electromagnetic simulator. The method for circuit simulation comprises the steps of discretizing the circuit element into charge elements and current elements, generating internal data structures to include the charge elements and current elements wherein the internal data structures include Mixed-Potential Integral Equation Green's functions and Partial Element Equivalent Circuit (PEEC) incident matrixes, and calculating relationship between the charge elements and current elements using multilayer Green's function to provide electromagnetic interactions in the internal data structures.
摘要翻译：本发明提供一种电磁仿真器的方法和装置。电路仿真的方法包括将电路元件离散为电荷元件和电流元件的步骤，产生内部数据结构以包括电荷元件和电流元件，其中内部数据结构包括混合电势积分方程绿色函数和部分元素等效电路（PEEC）事件矩阵，并使用多层Green函数计算电荷元素和电流元素之间的关系，以在内部数据结构中提供电磁相互作用。

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