【摘要】 以波形分类为基础的地震相分类研究可以有效筛选并快速逼近有利勘探目标。通过对地震波形分类技术原理的分析,以川东北地区清溪场区块为例,讨论了实施过程中时窗选取、模型道创建以及地震相成图中分类数和迭代次数的确定等问题,对清溪场构造飞仙关组飞四段地震相进行对比分析,得到了较为清晰的地震相成图,从图中分辨出了清溪A、B、C井的地震相情况,与钻探情况基本吻合。更多还原

【Abstract】 Based on waveform classification, the seismic-facies classification can effectively screen out and rapidly approximate to favorable exploration target. Taking Qingxichang block of northeastern Sichuan Basin as an example, we not only analyzed the theory of waveform classification but also discussed some problems, including time-window selection, model-trace establishment, along with classification- and iteration-number determination in seismic-facies mapping. Moreover, the seismic facies of Feixianguan 4 Member were studied and clearer mapping was obtained. From the mapping, the seismic facies of A, B and C wells in the block were identified, which are roughly in agreement with drilling results.更多还原