全波列声波测井数据的时域处理方法

DATA PROCESSING OF FULL WAVETRAIN ACOUSTIC LOGGING IN TIME DOMAIN

本文介绍了单发双收全波列数字声波测井数据的时域处理方法,采用相似相关法来确定滑行纵波时差,用过零点法来确定滑行横波和斯通利波的时差,从而得到它们在井壁岩体中的传播速度曲线.我们利用这种方法处理了人工模拟井和和实际地层井孔中所测的全波列声波测井数据.这种方法计算量小,处理速度高,有助于实现现场的实时数据处理.

In this paper, the processing technique for the data from the full wavetrain acoustic logging with single source and double receiver was introduced. The moveout of the sliding P-wave was determined by the technique of similarity correlation and the moveouts of the sliding S-wave as well as the Stoneley wave were determined by the zeroaxlal technique. In line with the moveouts above obtained,the velocity characteristic of those waves propagated in the rock body of the wallface could thus be determined. By using the technique mentioned above,the data of the full wavetrain acoustic logging from the analogue and the actual wells were processed. It needs only a little computational effort and is time-saving in computation,hence,it is helpful in implementing the real-time process-Ing in situ.