波形分类技术在隐蔽油藏预测中的应用

随着地震勘探技术的不断发展，近几年综合应用地震信息预测储集层及其含油性的技术也日趋发展。过去多采用波阻抗反演等方法研究隐蔽油藏，但在勘探早期阶段，尤其是在井资料少的情况下，波阻抗反演结果多解性往往较强。笔者在对冀中探区的大王庄隐蔽油藏的预测研究中，应用Stratimagic波形分类方法，提高了预测的符合率，根据预测结果部署的3口井，实施钻探均获商业性油流。

Application of waveform classification technique in the prediction of subtle reservoirs.

In modern oil and gas exploration, geologists have been trying to use various seismic characters to predict oil and gas reservoirs. Especially in recent years, with the development of seismic exploration techniques, in orde r to find out isolated sand body, c hannel sandstone body, sand reef and to diagnosis oil bearing character so as to enhance success ratio in oil and gas exploration, seismic information related t o stratigraphic structures, lithologic traps or reservoirs has been widely used. Waveform classification method has fully taken the advantage of abundant seismi c information and carefully identified the transverse changes of seismic signals by nerve net work algorithm which is used for classifying the form of seismic t races, and then, the seismic facies map that matched to geological facies is obt ained. Accordingly this waveform classification method can be used to predict th e distribution area of reservoir sand body and the subtle lithologic reservoir. In this article, an application example that has made a great deal success from Dawangzhuang area in Jizhong depression is presented, in which 3 new wells such as Well Lu105 etc. have been successfully drilled.