公开(公告)号：US5329235A

公开(公告)日：1994-07-12

申请号：US970093

申请日：1992-11-02

申请人： Qiang Zhou ,  Donald J. Hilliker ,  David F. Norwood

发明人： Qiang Zhou ,  Donald J. Hilliker ,  David F. Norwood

IPC分类号： G01V3/38 ,  G01V3/18

CPC分类号： G01V3/38

摘要： This invention discloses an adaptive deconvolution method for enhancing the vertical resolution of an MWD (measurement-while-drilling) electromagnetic resistivity logging tool. The tool measures the total differences between the voltages induced in a pair of spaced-apart receiver coils. A deconvolution filter, appropriate to the current position of the logging tool in the borehole, is derived according to the weighted average of the measured phase differences. Using the so-derived deconvolution filter, the measured phase differences are spatially deconvolved thereby to enhance the vertical resolution of the measurements by reducing the shoulder-bed effects.

摘要翻译： 本发明公开了一种用于增强MWD（测量同时测量）电磁电阻率测井工具的垂直分辨率的自适应去卷积方法。 该工具测量在一对间隔开的接收器线圈中感应的电压之间的总差。 根据测量的相位差的加权平均值导出适合于钻孔中测井工具当前位置的去卷积滤波器。 使用如此推导的去卷积滤波器，测量的相位差被空间解卷积，从而通过降低肩层效应来增强测量的垂直分辨率。

公开(公告)号：US5357481A

公开(公告)日：1994-10-18

申请号：US971225

申请日：1992-11-04

申请人： Robert A. Lester ,  Paul G. Junghans ,  Donald J. Hilliker ,  Mathew G. Schmidt ,  Jose R. Casarsa ,  Gregory J. Wilkinson

发明人： Robert A. Lester ,  Paul G. Junghans ,  Donald J. Hilliker ,  Mathew G. Schmidt ,  Jose R. Casarsa ,  Gregory J. Wilkinson

IPC分类号： G01V1/52 ,  G01V1/40

CPC分类号： G01V1/523 ,  Y10S367/912

摘要： A logging-tool assembly for generating both flexural wavefields and compressional wavefields in the sidewall formations encountered by a borehole. The assembly consists of a sonde constructed of a plurality of segments that are axially rotatable with respect to each other. Each one of two of the segments includes a compartment in which is mounted a dipole bender bar transmitting transducer. Two additional segments each contain one or more binaurally sensitive receiver transducers. Monopole transmitting and receiving transducers are also included in the respective appropriate segments. An acoustic isolator of novel construction acoustically separates the transmitting transducers from the receiving transducers.

摘要翻译： 一种测井工具组件，用于在井眼遇到的侧壁结构中产生弯曲波场和压缩波场。 该组件包括由相对于彼此可轴向旋转的多个段构成的探空器。 两个片段中的每一个包括隔室，其中安装有偶极弯曲杆发射换能器。 两个附加段各自包含一个或多个双耳敏感的接收换能器。 单极发射和接收换能器也包括在相应的适当段中。 新型结构的声隔离器将发射换能器与接收换能器进行声学分离。