公开(公告)号：US5116464A

公开(公告)日：1992-05-26

申请号：US624514

申请日：1990-12-07

申请人： David J. Edell ,  Lloyd D. Clark, Jr.

发明人： David J. Edell ,  Lloyd D. Clark, Jr.

IPC分类号： H01L21/306 ,  H01L21/308

CPC分类号： H01L21/3081 ,  H01L21/30608

摘要： An aqueous solution of cesium hydroxide serves as a highly selective anisotropic etch for semiconductor crystals including silicon. The cesium hydroxide also has a high etch selectivity for tantalum with respect to semiconductor crystals.

摘要翻译： 氢氧化铯的水溶液用作包括硅的半导体晶体的高选择性各向异性蚀刻。 相对于半导体晶体，氢氧化铯对于钽也具有高蚀刻选择性。

公开(公告)号：US06999517B1

公开(公告)日：2006-02-14

申请号：US09590657

申请日：2000-06-07

申请人： Bart J. Bombay ,  Lloyd D. Clark, Jr.

发明人： Bart J. Bombay ,  Lloyd D. Clark, Jr.

IPC分类号： H04B3/32 ,  H04L25/08

CPC分类号： E21B47/12 ,  H04B3/32 ,  H04B2203/5475

摘要： A digital telemetry system having improved data rate and robustness. The telemetry system has a data transmission cable having a first end and a second end, and is capable of transmitting data between the first and second end on at least two propagation modes. A data source connected at the first end has data transmission circuitry to generate data signals on these propagation modes. A receiver connected to the second end of the wireline cable has a first receive circuitry to receive signals on a first of the at least two propagation modes and a second receive circuitry to receive signals on a second of the at least two propagation modes. An adaptive far-end cross-talk cancellation circuitry connected to the first receive circuitry and to the second receive circuitry cancels out far-end cross-talk between the at least two propagation modes.

摘要翻译： 数字遥测系统具有改进的数据速率和鲁棒性。 遥测系统具有数据传输电缆，其具有第一端和第二端，并且能够在至少两个传播模式之间在第一和第二端之间传输数据。 在第一端连接的数据源具有在这些传播模式上产生数据信号的数据传输电路。 连接到有线电缆第二端的接收器具有第一接收电路，用于在所述至少两个传播模式中的第一个上接收信号;以及第二接收电路，用于在所述至少两个传播模式中的第二传播模式上接收信号。 连接到第一接收电路和第二接收电路的自适应远端串扰消除电路消除了至少两个传播模式之间的远端串扰。

公开(公告)号：US5483232A

公开(公告)日：1996-01-09

申请号：US285314

申请日：1994-08-03

申请人： Lloyd D. Clark, Jr. ,  Terry L. Mayhugh ,  Terry L. Mayhugh, Jr. ,  Jimmy E. Neeley ,  Guy Vachon

发明人： Lloyd D. Clark, Jr. ,  Terry L. Mayhugh ,  Terry L. Mayhugh, Jr. ,  Jimmy E. Neeley ,  Guy Vachon

IPC分类号： G01R19/04 ,  G01R31/02 ,  H02J13/00 ,  G01V1/00

CPC分类号： H02J13/00 ,  G01R19/04 ,  G01R31/021

摘要： A method and apparatus for predicting the peak voltage at the load end of a power transmission cable having a power supply end and a load end, where direct measurement at the load end is not practical. The method samples the current and voltage waveforms at the power supply end of the cable. The current waveform is used to estimate a current function which includes a full width at half maximum approximation adjusted as required for load, cable type, and cable length. The product of the current function and a peak voltage sample from the power supply end is an estimate of the peak voltage at the load end. The method and apparatus have been applied to oil well logging where one or more logging tools are lowered at the end of a transmission cable into an oil well and it is desirable to predict peak voltage at the tools to ensure proper tool performance.

摘要翻译： 一种用于预测具有电源端和负载端的电力传输电缆的负载端的峰值电压的方法和装置，其中在负载端的直接测量是不实际的。 该方法对电缆电源端的电流和电压波形进行采样。 电流波形用于估计当前功能，其包括根据负载，电缆类型和电缆长度所需的半最大近似值的全宽度。 来自电源端的当前功能和峰值电压采样的乘积是负载端的峰值电压的估计。 该方法和设备已经应用于油井测井，其中一个或多个测井工具在传输电缆的末端降低到油井中，并且期望预测工具的峰值电压以确保适当的工具性能。

公开(公告)号：US07787525B1

公开(公告)日：2010-08-31

申请号：US09471659

申请日：1999-12-24

申请人： Lloyd D. Clark, Jr. ,  Joseph M. Steiner, Jr. ,  Suzanne D. Richardson ,  Ramon Hernandez-Marti ,  Terry L. Mayhugh ,  Bart J. Bombay ,  John A. Booker ,  Gilbert R. Martinez

发明人： Lloyd D. Clark, Jr. ,  Joseph M. Steiner, Jr. ,  Suzanne D. Richardson ,  Ramon Hernandez-Marti ,  Terry L. Mayhugh ,  Bart J. Bombay ,  John A. Booker ,  Gilbert R. Martinez

IPC分类号： H04B13/02

CPC分类号： E21B47/122 ,  H04L27/2608

摘要： A wireline telemetry system and method of transmitting data on multiple carrier frequencies. The system and method adjust power level and number of bits-per-carrier to optimally or near-optimally utilize the capacity of the wireline cable. Due to the nature of wireline telemetry the overall power level is restricted only by the output capability of the downhole telemetry cartridge and the input power restrictions of the uphole telemetry unit receiver. The optimal power level is determined during a training sequence and is a function of such factors as cable length, cable material, cable temperature and cable geometry. The uplink and downlink transmission are executed using different modulation techniques.

摘要翻译： 一种有线遥测系统和在多载波频率上传输数据的方法。 系统和方法调整功率电平和每载波比特数，以最佳或接近最佳地利用有线电缆的容量。 由于电缆遥测的性质，整体功率水平仅受到井下遥测盒的输出能力和井上遥测单元接收机的输入功率限制的限制。 在训练序列期间确定最佳功率电平，并且是电缆长度，电缆材料，电缆温度和电缆几何形状等因素的函数。 使用不同的调制技术来执行上行链路和下行链路传输。

公开(公告)号：US5736936A

公开(公告)日：1998-04-07

申请号：US585390

申请日：1996-01-11

申请人： Bart J. Bombay ,  Marvin W. Rasmussen ,  Lloyd D. Clark, Jr. ,  Terry L. Mayhugh ,  Terry L. Mayhugh, Jr. ,  Jimmy E. Neeley ,  Guy Vachon

发明人： Bart J. Bombay ,  Marvin W. Rasmussen ,  Lloyd D. Clark, Jr. ,  Terry L. Mayhugh ,  Terry L. Mayhugh, Jr. ,  Jimmy E. Neeley ,  Guy Vachon

IPC分类号： G01R19/04 ,  G01R31/02 ,  H02J13/00 ,  G01V1/00

CPC分类号： H02J13/00 ,  G01R19/04 ,  G01R31/021

摘要： A method and apparatus for predicting the peak voltage at the load end of a power transmission cable having a power supply end and a load end, where direct measurement at the load end is not practical. The method samples the current and voltage waveforms at the power supply end of the cable. The current waveform is used to estimate a current function which includes a full width at half maximum and adjustments for cable reactive current, distortions, and load. The product of the current function and a peak voltage sample from the power supply end is an estimate of the peak voltage at the load end. The method and apparatus have been applied to oil well logging where one or more logging tools are lowered at the end of a transmission cable into an oil well and it is desirable to predict peak voltage at the tools to ensure proper tool performance. An important improvement is a more accurate current function which compensates for capacitive current flow in the cable and includes a quadratic term. Additional improvements are described, namely a method for predicting downhole current, adjustments for power supply distortions, and diagnostic metrics.

摘要翻译： 一种用于预测具有电源端和负载端的电力传输电缆的负载端的峰值电压的方法和装置，其中在负载端的直接测量是不实际的。 该方法对电缆电源端的电流和电压波形进行采样。 电流波形用于估计包括半峰全宽和电缆无功电流，失真和负载调整的当前功能。 来自电源端的当前功能和峰值电压采样的乘积是负载端的峰值电压的估计。 该方法和设备已经应用于油井测井，其中一个或多个测井工具在传输电缆的末端降低到油井中，并且期望预测工具的峰值电压以确保适当的工具性能。 一个重要的改进是更准确的电流功能，补偿电缆中的电容电流，并包括二次项。 描述了额外的改进，即预测井下电流，电源失真调整和诊断指标的方法。