子波反褶积在塔河油田联片三维地震资料解释中的应用

Application of the wavelet deconvolution in 3-D seismic interpretation in Ta-he oil field

中石化新星公司西北石油局,乌鲁木齐830011

The Northwest China Petroleum Bureau, SINOPEC, Wulumuqi 830011

在塔河油田联片地震资料解释过程中,地震子波非零相位化造成的“伴随相位”假象很容易被当成有效反射加以解释。在对测井声波、密度资料进行环境校正的基础上,提取了较准确的波阻抗反射系数。通过合成地震记录与井旁地震道的对比,从地震道中提取了非零相位的实际地震子波,并据此对原地震数据体进行子波反褶积处理。

The artifacts of "adjoint events" caused by non zero phase wavelet tend to be interpreted as effective events during the interpretation for seismic data from Ta he oil field. After environmental correction for sonic and density data impedance reflectivitys was calculated. The actual non zero phase wavelet was extracted from seismic traces by comparing synthetic seismogram with near wellbore seismic traces and was used to be deconvolved with seismic data. The processed seismic data are clear in reflection character and high in resolution and contain little artifacts caused by non zero phase wavelet.