基于AVO技术的岩性含气储层预测  

Prediction of lithologic gas bearing reservoir based on AVO technology

作　　者：高川 章聚翰 GAO Chuan;ZHANG Juhan(Qianyingzi Coal Mine,Hengyuan Coal&Electricity Co.,Ltd.,Suzhou 234000,China;CCTEG Xi’an Research Institute(Group),Co.,Ltd.,Xi’an 710077,China)

机构地区：[1]恒源煤电股份有限公司钱营孜煤矿,安徽宿州234000 [2]中煤科工西安研究院(集团)有限公司,陕西西安710077

出　　处：《陕西煤炭》2024年第5期46-50,84,共6页Shaanxi Coal

基　　金：中煤科工西安研究院(集团)有限公司科技创新项目(2021XAYJS04)。

摘　　要：针对AH地区,其白碱滩组地震反馈特性较模糊,预测储层的多解性较强,这使得提升含气储层预测精确性成为此地面对的关键问题。近期获取的钻井资讯和对岩石物理的研析发现,纵向和横向波速的比率对于含气储层的反应更为敏锐,比率越高,储层的发育就越显著。采用AH地区的纵横波速比特性来预测白碱滩组储层的发展状态,预测结果与实地钻井的数据非常一致。研究显示,根据白碱滩组发育与非发育储层所呈现的AVO特性,能有效地辨识AH地区的含气储层。利用白碱滩组地震道集纵横波速比特性预测储层的方式,能很好地解决AH地区含气储层预测的多解性问题,提高岩性储层预测的准确性,对AH地区未来的探索和开发具有指导价值。In the AH area,the seismic feedback characteristics of Bailiantan Formation are fuzzy,and the multi-solution of reservoir prediction is strong,which makes improving the prediction accuracy of gas-bearing reservoir become a key issue in the area.Recent drilling information and petrophysical analysis show that the ratio of longitudinal to transverse wave velocity is more responsive to the gas bearing reservoir,and the higher the ratio,the more significant the reservoir development.The characteristics of longitudinal and transverse wave velocity ratio in AH area are used to predict the development state of the Baijiantan Formation reservoir,and the predicted results are very consistent with the field drilling data.The study reveals that the gas-bearing reservoir in AH area can be identified effectively according to the AVO characteristics of developed and non-developed reservoirs in Baijiantan Formation.The method of reservoir prediction by means of seismic channel set transverse wave velocity ratio of Baijiantan Formation can solve the multi-solution problem of gas reservoir prediction in AH area,improve the accuracy of lithologic reservoir prediction,and have key guiding value for future exploration and development in AH area.

关 键 词：AVO 岩性储层 纵横波速比 含气储层预测 

分 类 号：TE19[石油与天然气工程—油气勘探]