测井约束反演技术在史南浊积砂体描述中的应用

The application of the log constrained inversion description technique for turbidite sandstones in Shinan area

1. 南京大学地球科学系,南京210008;2. 胜利石油管理局物探公司,东营257100

Department of Geoscience, Nanjing University, Nanjing 210008

砂体的标定与定量解释一直是物探解释人员所关心的问题。本文利用测井约束反演方法对史南地区沙三段进行了处理与描述,取得了良好的效果,可以很好地识别与发现砂层,并准确地判断其展布方向。通过钻井的验证,所求砂体的深度和厚度与解释结果相当吻合。

Calibration and quantitative interpretation of sand bodies is a problem always concerned by geophysical interpreters. The seismic data from Es3 formation in Shinan area of Jiyang depression was processed by using of log constrained inversion in the paper. Desirable results have been reached. From which it is easily to identify sand beds and their expand direction accurately. The depth and thickness of sand bodies are coincided considerably with well verification. Today, Reservoirs with thickness of 3～5m can still be identified by using the method in Shinan area even if they lie as deep as 3000m.