《Table 4 Minerals composition of shales in east margin of the Ordos Basin》
本系列图表出处文件名:随高清版一同展现
《"Unconventional Natural Gas Accumulations in Stacked Deposits:A Discussion of Upper Paleozoic Coal-Bearing Strata in the East Margin of the Ordos Basin, China"》
Qz,Quartz;Kp,K-feldspar;Pl,Plagioclase;Cal,Calcite;Dol,Dolomite;Aug,Augite;Sd,Siderite;Py,Pyrite;Ana,Anatase.
Several thick sandstone layers are developed in the study area,especially in the north part,which has a good tight gas development potential with some areas been verified in the Linxing area.In Taiyuan and Shanx formations,the Jinci,Qiaotou,and Beichagou sandstones are stably developed(Fig.9;Figs.4b and c),as well as the thick Luotuobozi sandstone bodies in the bottom of the Xiahihezi Formation(Fig.4a).The sandstones acquired during well drilling were tested for helium porosity,with most of the porosity values varying between 0.35%and22.29%,averaged at 7.65%(Fig.10;Table 5).Theaverage permeability of the samples is 0.72×10-3μm2,and quite a few samples being lower than 0.1×10-3μm2.The results show that the samples studied are generally tight sandstones,and same results have been reported by Li et al.(2016b).
图表编号 | XD0030681100 严禁用于非法目的 |
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绘制时间 | 2019.02.01 |
作者 | LI Yong、YANG Jianghao、PAN Zhejun、MENG Shangzhi、WANG Kai、NIU Xinlei |
绘制单位 | College of Geoscience and Surveying Engineering, China University of Mining and Technology、Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Minerals, Shandong University of Science and Technology、College of Geoscience and Su |
更多格式 | 高清、无水印(增值服务) |