页岩储层可压裂性地震预测方法新进展  

New progress in seismic prediction technology of fracability in gas shale reservior

作　　者：李红敬[1] 林正良[1] 

机构地区：[1]中国石化石油物探技术研究院,南京211103

出　　处：《地球物理学进展》2017年第6期2466-2471,共6页Progress in Geophysics

基　　金：国家重点基础研究发展计划(973)项目(2014CB239201)资助

摘　　要：利用地震勘探技术预测页岩储层的可压裂性,是目前页岩气勘探开发领域亟须解决的关键问题之一.本文介绍了近年国内外页岩储层可压裂性地震预测方法相关新进展,主要包括页岩可压裂性岩石物理分析、页岩储层裂缝、脆性和地应力地震预测方法等方面.通过调研可知利用叠前地震资料基于方位各向异性预测裂缝和地应力是目前主要技术,未来,解释人员可综合利用标准的反射成像和绕射成像进行裂缝解释.利用地震资料预测页岩岩石脆性的主要方法有以叠前弹性参数同时反演为核心的地震预测技术、地震属性Eρ预测岩石脆性和λρ-μρ模板预测脆性,根据研究区地震资料的偏移距选择恰当的方法进行岩石脆性预测.最终,本文探讨了页岩可压裂性地震预测进一步发展建议.Shale reservoir fracability prediction using seismic technology,is currently the challenge of the shale gas exploration and development. This paper introduces the recent progress in seismic prediction technology of fracability in shale gas reservoir,including rock physics analysis, shale fracture prediction,brittleness and in-situ stress prediction. It is found that the prediction of fracture and in-situ stress based on azimuthal anisotropy by prestack seismic data is the main progress. The main methods of predicting the brittleness of shale rock using seismic data are inversion method for brittleness evaluation from prestack seismic data,a new seismic attribute—Eρ and using a template λρ-μρ to predict the brittleness. According to the offset of seismic data in the study area,the appropriate method is used to predict the rock brittleness. Finally,this paper discusses the further development of shale fracture prediction.

关 键 词：页岩 可压性 裂缝预测 地应力 脆性预测 

分 类 号：P631[天文地球—地质矿产勘探]