收稿日期: 2017-04-17
修回日期: 2017-11-19
网络出版日期: 2018-02-10
基金资助
广东省“扬帆计划”引进紧缺拔尖人才项目(编号：916022)；创新强校特色创新项目(编号：650471；660053)；广东石油化工学院人才引进项目(编号：650125)；茂名市科技计划项目(编号：917304)联合资助.
Prediction of brittle mineral index by using P-wave and S-wave velocity method
Received date: 2017-04-17
Revised date: 2017-11-19
Online published: 2018-02-10
鲍祥生，谈迎，吴小奇，郑红军 . 利用纵横波速度法预测泥页岩脆性矿物指数[J]. 天然气地球科学, 2018 , 29(2) : 245 -250 . DOI: 10.11764/j.issn.1672-1926.2017.12.003
Brittleness index is an important parameter to select shale gas sweet spot.In view of the poor adaptability of Rickman method，which is widely used to predict brittle mineral index based on elastic parameters，a P-wave and S-wave velocity method for prediction is proposed.The brittle mineral index prediction method is derived based on the Wyllie equation，in which some elastic parameters，such as clay minerals and brittle minerals，are needed to be considered.This method only needs to consider the parameters of P-wave and S-wave in predicting brittle mineral index，which is simple and has a clear physical basis and clear geological meaning.The application in Well S in a certain area of Sichuan Basin shows that this method has higher prediction accuracy than the Rickman method.Therefore，the P-wave and S-wave velocity method can effectively guide the prediction of the brittle mineral index in the study area.
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