方差体技术在地震勘探中的应用

三维地震数据体反映了地下一个规则网格的反射情况。当遇到地下有断层或某个局部区域地层不连续变化时，一些地震道的反射特征就会与附近地震道出现差异而导致地震首局部的不连续性。三维方差体技术就是求取三维数据体所有样点的方差值来反映这种不连续性信息。通过该技术在济宁2号井某采区的实际应用，可看出，方差体技术在三维地震信息的自动拾取以及提高地震资料解释成果精度等方面有明显优势，对断层、陷落柱有良好的自动识别能力。

Application of variance Cube Technique in Seismic Prospecting

In this paper, the theory of variance cube technique is introduced from the need of importing variance cube technique. The author designed a technique to dispose seismic data into a variance cube. From the practical application in one section of Jining colliery, the technique has good effect in the automatic collecting of seismic information and improving interpretation precision of seismic data. In addition, It has good automatic recognition ability of geologic structures such as faults and subsided columns.