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以往的工作中,我们做构造图的原理都是通过已知井标定,使用图偏移的方法对时间构造图进行时深转换。这种方法在局部纵向上有很好的应用效果,但是它在没有井资料或井资料少的区域,横向上控制少,不能满足现今寻找复杂岩性油藏勘探及开发。而变速成图技术指的是通过应用沿层相干层速度反演的方法对层速度进行准确的求解,然后利用图偏移的方法来对时间构造图开展时深转换,最后所获得的主要成果就是深度构造图。用双狐软件的这种方法对HH油田D井区长7的平均速度做构造图,效果十分显著。
In the past work, we do the construction of the principle of the map are well-known calibration, the use of map offset method of time-structure map for time-conversion. This method has a good application effect in the local longitudinal direction. However, it has less horizontal control in areas without well data or with less well data and can not meet the current exploration and development of complex lithologic reservoirs. The variable speed mapping technology refers to the layer velocity by using the method of inversion of the velocity of the coherence layer along the layer, and then uses the method of map offset to perform the time-depth conversion of the time structure map. Finally, the main results obtained Is the depth of construction plans. With Shuanghuo software this method on the HH Oilfield D well 7, the average speed of the structure map, the effect is very significant.