石油物探2018，Vol.57Issue(2)：292-301,10.DOI:10.3969/j.issn.1000-1441.2018.02.015
基于Gray反射系数的频变AVO反演
Frequency-dependent AVO inversion based on Gray reflection coefficient formula
摘要
Abstract
The dispersion phenomenon is highly relevant for the identification of different fluids.Conventional AVO technology does not take into account attenuation and velocity dispersion in seismic wave propagation,and it also ignores the frequency factor.New dispersion attributes related to Lame coefficient and shear modulus are constructed via frequency-dependent AVO inversion based on the Gray reflection coefficient formula.The new dispersion attributes can be used as new fluid identification factors to identify the dispersion phenomenon caused by a fluid-saturated medium.Synthetic data and field data tests demonstrated that the dispersion attributes can identify the fluid-saturated reservoir effectively,and its sensitivity is different for each different fluid.The Lame coefficient dispersion attribute can indicate the gas reservoir more accurately and is less affected by the background value.The proposed method is effective for reservoir and fluid identification.关键词
依赖频率的AVO/速度频散/时频分析/流体识别/频散属性Key words
frequency-dependent AVO/velocity dispersion/time-frequency analysis/fluid identification/dispersion attribute分类
天文与地球科学引用本文复制引用
罗鑫,陈学华,吕丙南,李泂,瞿雷..基于Gray反射系数的频变AVO反演[J].石油物探,2018,57(2):292-301,10.基金项目
国家自然科学基金项目(41374134、41574130)、国家科技重大专项(2016ZX05014-001-009)、四川省青年科技创新研究团队项目(2016TD0023)和成都理工大学优秀科研创新团队培育计划(KYTD201410)联合资助.This research is financially supported by the National Natural Science Foundation of China (Grant Nos.41374134 and 41574130),the National Science and Technology Major Project of China (Grant No.2016ZX05014-001-009),the Sichuan Provincial Youth Science & Technology Innovative Research Group Fund (Grant No.2016TD0023) and the Cultivating Programme of Excellent Innovation Team of Chengdu University of Technology (Grant No.KYTD201410). （41374134、41574130）
