石油勘探与开发2017，Vol.44Issue(1)：79-88,10.DOI:10.11698/PED.2017.01.09
四川盆地中部下二叠统茅口组岩溶储集层地震预测
Karst reservoirs seismic prediction of Lower Permian Maokou Formation in central Sichuan Basin, SW China
戴晓峰 1张明 1江青春 1冯周1
作者信息
- 1. 中国石油勘探开发研究院,北京100083
- 折叠
摘要
Abstract
Based on the new well logging and seismic data of recent years in central Sichuan Basin,the comprehensive study of the karst reservoirs in the Lower Permian Maokou Formation was carried out using new geophysical techmology.The quantitative rock physical modeling and analysis demonstrated that the velocity and density of the reservoir decrease with the increase of porosity,shale volume and gas saturation.Seismic forward modeling analysis based on rock physical modeling confirmed that the reflection characteristics of the karst reservoirs show ‘dim point’ at top of the Maokou Formation,which is weak amplitude and low frequency.Through seismic attributes and wave impedance inversion,four large areas of favorable karst reservoirs are predicted.Based on the comprehensive evaluation,it is thought that karst lithologic reservoirs in up-dip direction can be formed,and the west to Shehong and Yanting are the most favorable exploration areas in the central Sichuan Basin.关键词
四川盆地中部/下二叠统/茅口组/岩溶储集层/岩石物理建模/“暗点”反射特征/有利勘探区带Key words
central Sichuan Basin/Lower Permian/Maokou Formation/karst reservoir/rock physical modeling/dim point/favorable exploration area分类
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戴晓峰,张明,江青春,冯周..四川盆地中部下二叠统茅口组岩溶储集层地震预测[J].石油勘探与开发,2017,44(1):79-88,10.
