【摘要】 鄂尔多斯盆地苏里格气田是典型的低渗、低压、低丰度"三低"气田,二叠系下石盒子组盒8段砂体纵向相互叠置,横向复合连片,有效储层相对较薄、气水关系较复杂。针对以上地质问题开展多波地震处理及流体检测技术研究,重点进行了转换波静校正、速度分析、纵横波一致性处理等多波处理关键技术研究,提高了多波地震资料的成像精度;创新应用多波联合叠前同时反演、多波AVO分析、岩石弹性参数交会等技术,获得了更加准确的弹性参数体,降低了单一纵波储层预测的多解性。由于采用独立变量的两种弹性参数交会寻找储层的异常响应,比单一地震参数预测可提高对储层异常的分辨率,因此,提高了岩性和流体检测的精度,使有效储层(指气层、含气层累计厚度)预测的符合率到80%以上,在苏里格气田勘探和开发井位部署中应用效果显著,为苏里格气田大规模的提交储量和有效开发提供了重要的技术支撑。 更多还原

【Abstract】 Sulige gas field is a typical low-permeability, low-pressure and low-abundance gas field in Ordos Basin. The sand bodies of the He-8 Member of the Lower Permian Shihezi Formation are vertically overlaid and horizontally linked up. The effective layers are relatively thin with the water-gas relations complicated. The technological research is focused on multi-wave seismic processing and fl uid detection in the light of the above-stated issues. A number of key multi-wave processing technologies ar... 更多还原