基于时频电磁法的富有机质页岩层系勘探研究  

A study of exploration organic rich shales using Time-Frequency Electromagnetic Method(TFEM)

作　　者：张春贺[1] 刘雪军[2] 何兰芳[2] 何委徽[3] 周印明[2] 朱永山[2] 崔志伟[2] 邝锡汉[2] 

机构地区：[1]中国地质调查局油气资源调查中心,北京100029 [2]中国石油集团东方地球物理勘探有限责任公司,河北涿州072751 [3]江苏省有色金属华东地质勘查局八一四队,南京210007

出　　处：《地球物理学报》2013年第9期3173-3183,共11页Chinese Journal of Geophysics

基　　金：全国页岩气资源潜力调查评价及有利区优选项目(2009GYXQ15)资助

摘　　要：我国地质条件复杂、多样,能否充分发挥出非地震勘探技术成本低、效率高的技术优势,检验电法勘探技术在页岩气勘探中的有效性,是当前在页岩气勘探起步阶段亟待解决的重要问题之一.本文介绍了在研究和总结含气页岩密度、极化率、电阻率等岩石物理特征基础上,在四川盆地南部筠连地区开展的物性调查、时频电磁法勘探试验工作.勘探研究结果表明,本地区分布的富有机质页岩层系-志留系龙马溪组(S1l)具备开展电法勘探工作的物性条件,时频电磁法具有勘探富有机质页岩层系的能力.China＇s Geological conditions are complex and various.Verifying the availability of electric exploration technique as well as exerting the high efficiency and low cost of non-seismic technique＇s advantages are the important issues at present shale gas exploration.This paper introduces the study and summarize of petrophysical characteristics of gas bearing shales such as density,rate of induced polarization,resistivity,etc,the shale gas exploration using timefrequency electromagnetic method in Junlian of southern Sichuan Basin.Our exploration results prove that the organic rich shales of Longmaxi formation （S1l） of Silurian has the proper physical properties could be used for electromagnetic method exploration.Time-Frequency Electromagnetic Method（TFEM）is an effective exploration technology for shale gas in this region.

关 键 词：页岩气 非地震勘探 时频电磁法 四川盆地 龙马溪组 

分 类 号：P631[天文地球—地质矿产勘探]