高邮凹陷北斜坡大沙埝地区的综合解释研究

COMPREHERSIVE INTERPRETATION OF THE AREA OF BEIXIEPOGRAND SN AREA,GAOYOU DEPRESSION

大沙埝地区是高邮凹陷的主力勘探区之一,也是一个辉绿岩发育、地震资料品质很差的地区。在强化地质认识的基础上,研究该区辉绿岩的空间展布和其对地震资料的影响,根据辉绿岩的分布特征和发育情况,把大沙埝地0区分为沙埝南和沙埝北。再对沙埝南地区利用各种地震勘探技术如三维可视化技术、相干体技术,对沙埝北地区应用新的地质模式进行断层和层位的综合解释,取得了较好的勘探效果。

Grand SN area is one of the most important exploration areas of Gaoyou Depression.It is a diabase growth area,with poor-quality seismic data.On the basis of emphasizing geologic recognition,dimensional distribution of diabase in this area is studied,as well as its impact on seismic data.Grand SN area is divided into South SN and North SN by distribution and growth features of diabase.For comprehensive interpretation of faults and horizons,various seismic exploration techniques,e.g.3D visualization and coherent volume technique,are used integratedly in South SN and new geological models are applied in North SN,from which satisfactory exploration results have been achieved.