Upper Paleozoic Marine Shale Characteristics and Exploration Prospects in the Northwestern Guizhong Depression, South China
Upper Paleozoic Marine Shale Characteristics and Exploration Prospects in the Northwestern Guizhong Depression, South China
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华南桂中坳陷西北部上古生界海相页岩特征及勘探前景
DOI：
10.1007/s11802-018-3440-y
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发表时间：
2018-05
影响因子：
1.6
通讯作者：
Chen Chao
中科院分区：
文献类型：
--
作者：
Zhu Zhenhong;Yao Genshun;Lou Zhanghua;Jin Aimin;Zhu Rong;Jin Chong;Chen Chao
华南桂中坳陷西北部上古生界发育多套富有机质页岩。然而，这些页岩的勘探目前处于相对不成熟的阶段。本研究以桂中坳陷西北部上古生界页岩为研究对象，包括中泥盆统罗浮页岩、那表页岩、下石炭统盐官页岩等。进行矿物成分分析、有机质分析（包括总有机碳（TOC）含量、干酪根显微组分和镜质体反射率（Ro））、孔隙特征分析（包括孔隙度和渗透率、SEM判别孔隙类型、氮气吸附孔径分布）、甲烷等温吸附试验，确定页岩的分布和厚度，进而进行特征分析。 对两个目标页岩的情况进行了说明和比较。研究结果表明，上古生界页岩有机质条件良好（主要为中高TOC含量、Ⅰ、Ⅱ 1 型干酪根、高至过成熟度）、良好的可压裂潜力（脆性指数（BI）> 40%）、孔隙类型多、分布和有效厚度稳定、甲烷吸附能力好。因此，桂中坳陷北部上古生界页岩具有良好的页岩气潜力和勘探前景。而且，中泥盆统页岩的平均TOC含量、平均BI、富有机质页岩厚度（TOC>2.0wt%）和页岩气资源均优于下石炭统页岩。中泥盆统页岩比下石炭统页岩具有更好的页岩气潜力和勘探前景
Multiple sets of organic-rich shales developed in the Upper Paleozoic of the northwestern Guizhong Depression in South.China. However, the exploration of these shales is presently at a relatively immature stage. The Upper Paleozoic shales in the north-.western Guizhong Depression, including the Middle Devonian Luofu shale, the Nabiao shale, and the Lower Carboniferous Yanguan.shale, were investigated in this study. Mineral composition analysis, organic matter analysis (including total organic carbon (TOC).content, maceral of kerogen and the vitrinite reflection (Ro)), pore characteristic analysis (including porosity and permeability, pore.type identification by SEM, and pore size distribution by nitrogen sorption), methane isothermal sorption test were conducted, and.the distribution and thickness of the shales were determined, Then the characteristics of the two target shales were illustrated and.compared. The results show that the Upper Paleozoic shales have favorable organic matter conditions (mainly moderate to high TOC.content, type I and II 1 kerogen and high to over maturity), good fracability potential (brittleness index (BI) > 40%), multiple pore.types, stable distribution and effective thickness, and good methane sorption capacity. Therefore, the Upper Paleozoic shales in the.northern Guizhong Depression have good shale gas potential and exploration prospects. Moreover, the average TOC content, average.BI, thickness of the organic-rich shale (TOC > 2.0 wt%) and the shale gas resources of the Middle Devonian shales are better than.those of the Lower Carboniferous shale. The Middle Devonian shales have better shale gas potential and exploration prospects than.the Lower Carboniferous shales
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DOI：
10.1007/s11430-013-4579-4
发表时间：
2013-04
期刊：
Science China Earth Sciences
影响因子：
--
作者：
Yanjun Li;Huan Liu;Liehui Zhang;ZongGang Lu;Qirong Li;Yongbin Huang
通讯作者：
Yanjun Li;Huan Liu;Liehui Zhang;ZongGang Lu;Qirong Li;Yongbin Huang
影响因子：
3.5
作者：
Loucks, Robert G.;Ruppel, Stephen C.
通讯作者：
Ruppel, Stephen C.
影响因子：
4.2
作者：
Shangbin Chen;Yanming Zhu;Yong Qin;Hongyan Wang;Honglin Liu;Junhua Fang
通讯作者：
Shangbin Chen;Yanming Zhu;Yong Qin;Hongyan Wang;Honglin Liu;Junhua Fang
DOI：
--
发表时间：
2009
期刊：
Natural Gas Industry
影响因子：
--
作者：
Jin Tie-ya
通讯作者：
Jin Tie-ya
DOI：
--
发表时间：
2014
期刊：
Journal of China University of Petroleum
影响因子：
--
作者：
Wu We
通讯作者：
Wu We