基于随机分形模拟与Seislog技术预测薄(互)层砂体  

THE PREDICTION ON THIN(ALTERNATING) LAYERS SAND BODY BASED ON TECHNIQUE OF STOCHASTIC FRACTAL SIMULATION AND SEISLOG INVERSION

作　　者：何琰[1] 张引来[2] 吴念胜[1] 

机构地区：[1]西南石油学院,四川成都610500 [2]四川石油管理局地调处,四川南充637000

出　　处：《西南石油学院学报》2005年第2期10-12,共3页Journal of Southwest Petroleum Institute

基　　金："油气藏地质及开发工程"国家重点实验室开放基金项目资助(PLN0134)。

摘　　要：地震反演的分辨率大于10m,厚度小于10m的储层砂体在地震反演结果中常常相互叠加,不能单独预测出来,降低了预测精度和预测结果的应用。因此,利用地震资料预测薄(互)层砂体是目前储层预测的一个难点和前沿课题。虽然宽带约束反演表面上能提高分辨率,但那是伪分辨率,不仅没有多大的实际意义,而且计算量大。将随机分形模拟与Seislog软件相结合较好地解决了以上问题。应用实例表明,该方法能预测厚度5m左右的砂体,不仅预测精度较高,而且计算量小,在微机上很容易实现。Usually, the seismic resolution is more than 10m. Moreover, the inversion result of inversion that is less than 10m can't be predicted. So, it is a difficult and advanced subject to apply seismic data prediction thin(alternating) layers. Band-constrained inversion can increase the resolution, but it's resolution is false. Moreover, the computer time of band-constrained inversion is very long. The binding of stochastic simulation and Seislog inversion can predict the thin (alternating) layers. The application result indicates that the method not only can predict 5m sand body, but also has high accuracy and the calculation time is short.

关 键 词：薄(互)层砂体 宽带约束反演 随机模拟 Seislog反演 

分 类 号：P631.442[天文地球—地质矿产勘探]