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舞阳凹陷位于河南省中部,面积约1900km~2,为一由叶鲁断裂控制的北深南浅箕状凹陷。主要目的层厚达4500m,暗色生油岩和储集砂岩体均较发育,中上部还有一些膏盐沉积,形成了较好的生储盖组合。研究表明,该区是一个油气远景较好的盆地。 本文针对工区内勘探程度不高,地震资料品质较差,难以用其速度参数预测岩性分布特征的问题,讨论速度分析中的第三岩性校正。
Wuyang depression is located in the central part of Henan Province, an area of about 1900km ~ 2, is a controlled by the Yelu fault north deep-shinny shallow depression. The main target formation is up to 4500m in thickness, darker source rocks and reservoir sandstone bodies are well developed, and there is some gypsum salt deposition in the middle and upper part, forming a better combination of reservoir and cover. Research shows that the area is a basin with a good oil and gas prospect. In this paper, the third lithologic correction in velocity analysis is discussed in view of the low exploration level in the work area and the poor seismic data, which makes it difficult to predict the lithologic distribution characteristics with its velocity parameters.