-
1.发明授权
公开(公告)号：US5606124A
公开(公告)日：1997-02-25
申请号：US655304
申请日：1996-05-20
IPC分类号： E21B47/022 , E21B47/00
CPC分类号： E21B47/022
摘要： A method for determining orientation of an instrument with respect to earth's gravity. The method includes measuring components of earth's gravity along mutually orthogonal axes. One of the axes is substantially parallel to an axis of the instrument. Tilt of the instrument along two orthogonal axes is measured. One of the tilt axes is substantially parallel to the instrument axis. The instrument is rotated about its axis, and biases of the sensors used to measure the components of earth's gravity perpendicular to the instrument axis are calculated by averaging measurements made by these sensors during rotation. The ratio of gains of these sensors is determined from the range of amplitudes of the output of these sensors during rotation. A roll angle is determined from the bias corrected measurements of components of the earth's gravity perpendicular to the axis. The tilt measurement with respect to the two orthogonal axes is then calibrated by using the calculated roll angle. Gain and offset calibration of all the sensors used to measure the components of the earth's gravity is performed using the calibrated tilt measurements and the orientation is calculated from the gravity measurements after correction for gain and offset of the sensors.
摘要翻译： 一种用于确定仪器相对于地球重力的方向的方法。 该方法包括沿相互正交的轴测量地球重力的分量。 其中一个轴基本上平行于仪器的轴线。 测量沿着两个正交轴的仪器倾斜。 倾斜轴之一基本上平行于仪器轴。 仪器围绕其轴线旋转，用于测量垂直于仪器轴的地球重力分量的传感器的偏差通过在旋转期间对这些传感器进行的测量进行平均来计算。 这些传感器的增益比由旋转期间这些传感器的输出振幅的范围确定。 从垂直于轴的地球重力的分量的偏置校正测量确定滚转角度。 然后通过使用计算的滚动角来校准相对于两个正交轴的倾斜测量。 用于测量地球重力组分的所有传感器的增益和偏移校准是使用校准的倾斜测量进行的，并且根据传感器增益和偏移校正后的重力测量计算取向。
-
2.发明授权Method and apparatus for generating and detecting amplitude and phase modulated sensor signals 失效用于生成和检测幅度和相位调制传感器信号的方法和装置
公开(公告)号：US5594344A
公开(公告)日：1997-01-14
申请号：US512893
申请日：1995-08-09
申请人： Mark R. Doyle , John T. Evans
发明人： Mark R. Doyle , John T. Evans
CPC分类号： G01R13/02 , E21B47/12 , H03D3/007 , H04L27/3854 , H03D3/006
摘要： A method of extracting a phase and amplitude modulation signal impressed on a carrier is disclosed. The method includes generating the carrier at a frequency which is a multiple of the bandwidth of the modulation signal. The multiple equals 4N+1, where N is an integer. The modulation signal is impressed on the carrier, generating a phase and amplitude modulated carrier, The modulated carrier is digitally sampled at a frequency of four times the bandwidth the modulation signal. The digital sampling is initiated substantially contemporaneous with initiation of generating the carrier. A 90-degree phase shift is applied to the digitally sampled carrier to generate a quadrature component of the digitally sampled carrier. A time delay is applied to the digitally sampled carrier to restore time coincidence between the quadrature component and said digitally sampled carrier, and the phase and amplitude modulation signal is extracted by commutation of the time-delayed digitally sampled carrier and the quadrature component of the digitally sampled carrier. In a particular embodiment of the invention, the phase and amplitude can be extracted from the extracted signal.
摘要翻译： 公开了一种提取施加在载体上的相位和幅度调制信号的方法。 该方法包括以调制信号的带宽的倍数的频率生成载波。 多重等于4N + 1，其中N是整数。 调制信号施加在载波上，产生相位和调幅载波。调制载波以调制信号带宽的四倍的频率进行数字采样。 在开始生成载体时基本上同时启动数字采样。 将90度相移施加到数字采样载波以产生数字采样载波的正交分量。 对数字采样载波施加时间延迟以恢复正交分量和所述数字采样载波之间的时间一致性，并且通过对时间延迟的数字采样载波和数字采样的正交分量进行换向来提取相位和幅度调制信号 采样载体。 在本发明的特定实施例中，可以从所提取的信号中提取相位和振幅。
-
公开(公告)号：US4750180A
公开(公告)日：1988-06-07
申请号：US888939
申请日：1986-07-24
申请人： Mark R. Doyle
发明人： Mark R. Doyle
CPC分类号： G11B20/10527
摘要： An analog signal is oversampled as a digital time series. The data samples are divided into an even and an odd sequence. Each sequence is independently low-pass filtered and the resulting two reconstructed sequences will be identical to each other and to the original if no isolated error is present in the original sequence. When the three sequences are not equal, an error exists. By noting the location or sample number of the error, the exact location of the error can be determined and the correctly reconstructed sample value can be used to replace the erroneous sample in the original sequence.
摘要翻译： 模拟信号被过采样为数字时间序列。 将数据样本分为偶数和奇数序列。 每个序列独立地低通滤波，如果在原始序列中没有隔离误差，则所得到的两个重构序列将彼此相同，并且与原始序列相同。 当三个序列不相等时，存在错误。 通过注意错误的位置或样本数，可以确定错误的确切位置，并且可以使用正确重建的样本值来替换原始序列中的错误样本。
-
4.发明授权
公开(公告)号：US6108605A
公开(公告)日：2000-08-22
申请号：US212171
申请日：1998-12-16
申请人： Mark R. Doyle , Otto N. Fanini
发明人： Mark R. Doyle , Otto N. Fanini
CPC分类号： G01V3/28
摘要： A system and method for controlling the transmitted signal for use in a well logging tool, using an iterative method (preferably the method of steepest descent) such that the transmitted signal more closely resembles a desired waveform.
摘要翻译： 一种用于使用迭代方法（优选地是最速下降的方法）来控制在测井工具中使用的发射信号的系统和方法，使得所发射的信号更接近于期望的波形。
-
公开(公告)号：US5506577A
公开(公告)日：1996-04-09
申请号：US298654
申请日：1994-08-31
申请人： Mark R. Doyle
发明人： Mark R. Doyle
CPC分类号： H04L7/0334 , E21B47/12 , H04L7/04
摘要： The invention is a method of synchronizing a digital telemetry receiver to a digital telemetry transmitter. The method includes the steps of initializing the sampling period of the receiver, measuring the detection time of each signal event detected by the receiver relative to a time window based on the sampling period, accumulating statistics representing the detection times of each of the events, and calculating a refined sampling period based on a linear regression fit of the actual detection time of each event.
摘要翻译： 本发明是一种将数字遥测接收机同步到数字遥测发射机的方法。 该方法包括以下步骤：初始化接收机的采样周期，基于采样周期测量接收机相对于时间窗口检测到的每个信号事件的检测时间，累积表示每个事件的检测时间的统计信息;以及 基于每个事件的实际检测时间的线性回归拟合计算精细采样周期。
-
6.发明授权Carrierless amplitude and phase modulation telementry for use in electric wireline well logging 失效用于电缆测井的无载波幅度和相位调制远程监控
公开(公告)号：US5504479A
公开(公告)日：1996-04-02
申请号：US473441
申请日：1995-06-07
申请人： Mark R. Doyle , Fuling Liu , Jorge O. Maxit
发明人： Mark R. Doyle , Fuling Liu , Jorge O. Maxit
CPC分类号： H04L25/4921 , E21B47/122
摘要： An apparatus for communicating signals from a well logging tool to a recording unit is disclosed. The logging tool includes a transmitter comprising a source of digital bits representing measurements made by the tool, an encoder connected to the source of digital bits for transforming groups of the digital bits into multivalued symbols, a first in-phase filter and a first quadrature filter connected to the encoder so that first coordinates of the symbols are filtered in the in-phase filter, second coordinates of the symbols are filtered in the quadrature filter, the filters having responses forming a Hilbert transform pair, a digital subtractor connected to the first filters for calculating a difference between outputs of the filters, and a digital-to-analog converter connected to the output of the subtractor for generating signals to be communicated to the recording unit over a communication channel.The recording unit includes a receiver comprising an analog-to-digital converter to receive and digitize signals from the communication channel, a second in-phase filter and a second quadrature filter connected to the analog-to-digital converter, the second filters respectively having substantially the same response characteristics as the first in-phase and quadrature filters, a decision feedback equalizer connected to the second filters for correcting timing and distortion errors in the signals from the logging tool and demodulating the multivalued symbols, and a decoder connected to the equalizer for converting demodulated multivalued symbols output from the equalizer into the groups of bits conducted to the encoder in the logging tool.
摘要翻译： 公开了一种用于将测井工具的信号传送到记录单元的装置。 记录工具包括发射机，包括表示由该工具进行的测量的数字位源;连接到数字位源的编码器，用于将数字位组的组变换为多值符号;第一同相滤波器和第一正交滤波器 连接到编码器，使得符号的第一坐标在同相滤波器中被滤波，符号的第二坐标在正交滤波器中被滤波，滤波器具有形成希尔伯特变换对的响应，连接到第一滤波器的数字减法器 用于计算滤波器的输出之间的差异，以及连接到减法器的输出的数模转换器，用于通过通信信道产生要传送到记录单元的信号。 记录单元包括一个接收机，包括一个模拟 - 数字转换器，用于接收和数字化来自通信信道的信号，第二同相滤波器和连接到模拟 - 数字转换器的第二正交滤波器，第二滤波器分别具有 与第一同相和正交滤波器基本相同的响应特性，连接到第二滤波器的判决反馈均衡器，用于校正来自测井工具的信号中的定时和失真误差并解调多值符号，以及连接到均衡器的解码器 用于将从均衡器输出的解调多值符号转换成在测井工具中传送到编码器的位组。
-
公开(公告)号：US5495547A
公开(公告)日：1996-02-27
申请号：US420662
申请日：1995-04-12
CPC分类号： H01B7/046 , E21B17/206 , G02B6/4416 , G02B6/4427 , H01B9/005
摘要： The present invention is a well logging cable including first conductor elements, each of the first elements consisting of a steel wire surrounded by copper strands and covered in an electrically insulating material, and at least one second conductor element including at least one optical fiber enclosed in a metal tube, copper strands surrounding the tube and the strands covered by the electrically insulating material. The first elements and the at least one second element are arranged in a central bundle. The second conductor element is positioned within the bundle so as to be helically wound around a central axis of the bundle. The bundle is surrounded by armor wires helically wound externally to the bundle.
摘要翻译： 本发明是一种测井电缆，包括第一导体元件，每个第一元件由铜绞线包围并覆盖在电绝缘材料中的钢线，以及至少一个第二导体元件，该至少一个第二导体元件包括至少一个光纤 金属管，围绕管的铜绞线和被电绝缘材料覆盖的线。 第一元件和至少一个第二元件布置在中心束中。 第二导体元件位于束内，以便围绕束的中心轴线螺旋缠绕。 包裹被围绕在束外部螺旋缠绕的铠装线。
-
公开(公告)号：US4675851A
公开(公告)日：1987-06-23
申请号：US416532
申请日：1982-09-09
申请人： Carl H. Savit , Mark R. Doyle
发明人： Carl H. Savit , Mark R. Doyle
摘要： Sweeps of seismic signals consisting of pulse trains having a predetermined number of pulses in which the periods or durations of the pulses are randomized and in which the wave shape and relative time displacements of the pulses in different trains provides substantially constant spectral level over a frequency range containing several octaves.
摘要翻译： 扫描由具有脉冲序列的脉冲序列组成的地震信号，其中脉冲的周期或持续时间被随机化，并且其中不同列的脉冲波形和相对时间位移在频率范围内提供基本上恒定的频谱电平 包含几个八度。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.027 秒)
