基于随机分形模拟与Seislog技术预测薄(互)层砂体

英文篇名：THE PREDICTION ON THIN(ALTERNATING) LAYERS SAND BODY BASED ON TECHNIQUE OF STOCHASTIC FRACTAL SIMULATION AND SEISLOG INVERSION
中文刊名：西南石油学院学报
英文刊名：Journal of Southwest Petroleum Institute
作者：何琰 ; 张引来 ; 吴念胜
英文作者：HE Yan(South West Petroleum Institute ; Sichuan Chengdu ; 610500 ; China) ; ZHANGYinlai ; WU Niansheng.JOURNAL OF SOUTHWEST PETROLEUM INSTITUTE ; VOL.27 ; (NO.2 ; ) 10-12 ; 2005(ISSN1000-2634 ; IN CHINESE)
中文关键词：薄(互)层砂体 ; 宽带约束反演 ; 随机模拟 ; Seislog反演
英文关键词：thin (alternating) layers ; band-constrained inversion ; stochastic simulation ; Seislog inversion
出版日期：2005-04-30
机构：西南石油学院,四川石油管理局地调处,西南石油学院四川成都610500 ,四川南充637000 ,四川成都610500
年：2005
期：02
出版单位：西南石油学院学报

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.

引文

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