焦石坝地区泥页岩有机碳含量预测技术及对比  

Research on shale TOC content prediction techniques and contrast in Jiaoshiba area,Sichuan Basin,China

作　　者：陈超[1] 刘韵[2] 王明飞[1] 周卓铸[1] 

机构地区：[1]中国石化勘探分公司,成都610041 [2]中国石化西南油气田分公司,成都610041

出　　处：《成都理工大学学报（自然科学版）》2016年第1期50-58,共9页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：中国石油化工集团公司重大科技专项(P13129)

摘　　要：探讨泥页岩的残余有机碳含量的地球物理预测方法,为页岩气勘探选区及开发提供关键依据。以川东南焦石坝地区五峰组-龙马溪组泥页岩为例,在岩心样品测试及测井资料交互分析的基础上,通过多属性反演、叠前密度反演及拟声波反演技术,进行有机碳含量的平面预测。结果表明3种反演技术均能较好地进行有机碳含量展布特征及评价研究。对比3种有机碳含量预测的技术方法,叠前密度反演对基础数据要求较高,其反演精度也最高;多属性反演及拟声波反演技术适用性较强,尤其是拟声波反演技术可在二维地震工区进行大范围应用。Geophysical prediction method for investigating residual organic carbon shale content is used so as to provide evidence for shale gas exploration and development. Based on drilling well laboratory analysis and logging data, combined with multi-attribute inversion, pre-stack density inversion and pseudo acoustic inversion techniques, the shale TOC content in Jiaoshiba area of Sichuan Basin is predicted. It shows that all these three kinds of inversion techniques meet the research demand of characteristics and evaluation of TOC content distribution. Of the three technical methods, the pre- stack inversion needs higher quality basic data, and produces the highest precision, while the acoustic inversion and multi-attribute inversion have an extensive usability, especially the acoustic inversion technique has a wide range of application in the two-dimensional seismic work area.

关 键 词：有机碳含量 多属性反演 叠前密度反演 拟声波反演 

分 类 号：P631[天文地球—地质矿产勘探] TE122.113[天文地球—地质学]