【摘要】 涪陵地区大安寨段具有形成页岩气的勘探潜力,而寻找优质泥页岩尤为重要。首先,在明确泥页岩测井及地震响应特征的基础上,利用地震波阻抗反演,去除灰岩,寻找泥页岩;然后,在泥页岩的基础上,寻找高TOC的优质泥页岩。目前国内外对TOC的预测还处于探索阶段,常见的TOC预测技术以利用测井资料为主,主要包括Δlg R法、自然伽马能谱法、密度法和多属性反演技术法等4种。文中通过对敏感性参数分析,选用了自然伽马能谱法和多属性反演技术,来预测涪陵地区大安寨段优质泥页岩,取得了很好效果。更多还原

【Abstract】 Because of the shale gas exploration potential of Da′ anzhai Formation in Fuling Area, it becomes very important to find quality mud shale. On the basis of the response features of mud shale and seismic impedance inversion, limestone is identified to look for mud shale, finally high quality mud shale with high TOC is to be found. At present, seismic predictions of TOC are still at exploring stage worldly, common TOC predictions are mainly based on logging data, Δlog R, natural gamma ray spectrometry method, density method and multi-attribute inversion. In this paper, by analysis of sensitive parameters, natural gamma ray spectrometry method and multi-attribute inversion are chosen to predict quality mud shale in the Da′anzhai Formation of Fuling area, which has obtained a good effect.更多还原