构造成图技术在地震资料稀缺、地形复杂情况下的应用——以D盆地研究为例

海外勘探中常遇到的资料稀缺、地质条件复杂等困境,直接加剧了勘探难度和挑战性,所以急需快速而有效的方法取得研究成果并指导勘探.文中以地震资料稀缺、地形复杂的D盆地为例,总结出了一套适用于本区的构造成图技术和流程.结合地震、钻井、文献多样化信息,借助数字化的地质剖面和重磁信息约束的趋势面综合网格构造成图,对地震空白区进行了有效的趋势约束,得到了基础区域地质图件,取得了良好的应用效果,为下一步的盆地构造分析以及构造单元划分奠定了坚实的基础.

The key technology of structural mapping with scarce seismic data and complex terrain condition and its application:A case study of D Basin

The scarcity of data and the complicated geological conditions are often encountered in overseas exploration,so the difficulty and challenge of exploration are directly aggravated.Therefore,it is urgently needed to get the research results quickly and effectively so as to guide the exploration.As an example,D Basin is characterized by scarce data and complex terrain conditions.In this paper,a set of mapping techniques and processes are summarized,which are applicable to this area.Combined with seismic survey,drilling well and di-versified information,the authors integrated the digital geological profile and the gravity and magnetic information with trend surface con-straints into the grid structure.The effective trend constraint of seismic blank area was also carried out,thus obtaining effective basic re-gional geological maps and achieving good application effect.The results obtained by the authors have laid a solid foundation for the fur-ther basin structural analysis and structural unit division.