虚拟现实系统及三维地震数据解释

自20世纪90年代中后期以来,虚拟现实技术已在国外油气勘探开发中发挥了重要作用,尤其是在大面积三维地震数据及多年采集的三维地震数据连片处理解释、有利远景区评价、目标评价及钻探设计、油藏地质建模和发挥专家的智能等方面取得了重要进展,大大地提高了工作效率,降低了勘探开发风险。本文利用东方地球物理公司引进的虚拟现实系统,依托700km2三维地震数据体及测井等数据对虚拟现实系统进行了应用研究,通过多属性数据体处理和透视浏览等研究手段快速发现和评价了地质目标,提供了钻探井位,对研究区的沉积体系展布有了总体认识,为岩性地层圈闭预测和评价奠定了基础。同时还总结出了虚拟现实系统三维地震数据解释的流程。文章最后还探讨了虚拟现实技术的发展方向。

Virtual reality system and 3-D seismic data interpretation

Since the mid and late nineties of the 20th century , the virtual reality technique has played an important role in oil/gas exploration and development at home and abroad,especially has achieved important progress in the following aspects as patch-linking processing and interpretation of large area of 3-D seismic data and many-years'-acquired 3-D seismic data, being benefit for appreciation of the prospective area and targets,drilling design,geologic model-building of reservoir and playing intelligent of specialists, which greatly increased working efficiency and reduced the exploration and development risk. Using the virtual reality system introduced by BGP and relying on 700km2 of 3-D seismic data and logging data, the paper implemented the application study of virtual reality system, fastened the discovery and appreciation of geologic targets by processing of multi-attributes data volume and perspective browsing and provided drilling well sites, which had total knowledge of spreading of sedimentary system in studied area and laid a foundation for predicting and appreciating lithostratigraphic traps. Meanwhile, the paper also summarized the flow of 3-D seismic data interpretation by virtual reality system. Finally, the paper discussed the developing direction of virtual reality technique.