应用奇性分形反演技术进行储集层描述

Trial of application of odd-fractal inversion technology in reservoir description

针对埕岛油田东营组特定砂泥岩互层的组合特点,根据地层岩性的不连续性造成的波动奇性传播,本文利用波动方程对地震资料进行奇性分形反演以识别不同的地层,从而达到对储层进行描述的目的。本文首先从三维数据体中抽取所要处理的测线,由SEQ-Y格式转换成奇性分析的输入格式,然后进行神经网络反褶积处理。在此基础上进行奇性分析处理和分形分维描述,最后从井资料出发,与测井、沉积相资料结合起来,对处理结果做出解释并建立储层描述模型。实际应用表明本文方法切实可行。

Aimed at specific sand/shale interbedded combination character in Dongying Formation, Chengdao oilfield and according to odd propagation of wave caused by stratigraphic-lithologic uncontinuity, the paper carried out odd inversion for seismic data by using wave equation, so can achieve the goal of reservoir description. The method description is as follows; sorting lines desired for processing from 3-D seismic data volume and format conversion from SEQ-Y into odd analyzed input format at first, then deconvolution processing by neural network, next odd analyzing processing and fractal dimensional description, finally integrally using drilling, logging and sedimentary facies data to interpret processed results and build up reservoir description model. The practical application proved that the method is the feasible one.