综合利用测井和地震数据刻划储层参数横向变化

INTEGRATING WELL LOGGING WITH THE SEISMIC DATA FORDESCRIBING THE LATERAL CHANGE OF RESVERVOIR PARAMETERS

测井与地震相结合进行地层横向参数分布刻划是测井解释由线向面过渡的趋势，亦是提高地震解释分辨率的有效途径之一。本文首先将地震和测井资料加以匹配，根据测井资料求出的地震子波与井旁地震道反褶积，得到时间域的声波时差，通过分形插值来提高地震道的纵向分辨率。子波的求取采用与传统方式不同的逐点相关法，即将测井得出的反射系数与井旁道上相应长的一段反褶积，当得到的波形与雷克子波相关性最佳时，可同时得到地震子波及本段测井曲线的起始时间。此方法推出的孔隙度与在地震测线上的另一口井的测井解释结果对比表明，效果较为明显，为深入探讨研究此类问题奠定了基础。

The well logging mainly provides the accurate information about borehole. The seismiccovers broad areas in its prospecting. It is necessary for finding the oil reservoir,but the resolution is notideal when used for describing the parameters of the layers. Now the trend has been coming that combining the log data with seismic for lateral interpretation from the point to field. Also it is an effective wayto improve the accuration of seismic. In this paper,the match between seismic and log was made. According to the deconvolution of wavelet from logging with seismic track,we get the traveling time in time domain. By fractal interpolation,the seismic resolution was enhanced. Through point by point correlation,both the wavelet and the initial time of the log were got simultaneously. The result is satisfying and thebasis for further study is then built.