摘要
三维感应测井技术,既可以测得地层的水平电阻率也可测得垂直电阻率,还可得到各向异性地层模型的两种含水(油)饱和度、地层倾角和仪器方位角等信息,进而可以准确地进行地层评价。文章提出了一种基于数字相敏检波的三维感应测井数据处理方法。利用数字相敏检波对固定频率敏感的特性,使有用信号与无用信号分离的更加彻底,保留了与油、气储层有关的有用信号,具有检波精度高、性能可靠的特点。
The triaxial induction logging tool can measure horizontal resistivity and vertical resistivity, it can also obtain two types of aquifers (oil) saturation about anisotropy formation, formation dip, and azimuthal angle, so it can accurately evaluate the formation evaluation. This paper introduces a new method of triaxial induction logging data processing which based on digital phase sensitive detector. Using the features that digital phase sensitive detector is sensitive to the fixed-frequency, the useful signal and useless signal is separated completely and the useful signal about the oil and gas source are reserved. It has the characteristics of high precision and reliable performance.
出处
《石油仪器》
2009年第6期1-3,3,共3页
Petroleum Instruments
关键词
三维感应测井
数据处理
数字相敏检波
triaxial induction logging
data processing
phase sensitivity demodulation
