摘要
阳谷-茌平煤田是山东省晚古生代石炭-二叠纪地层保留较好的地区,发育有本溪组、太原组、山西组和残存的石盒子群,其中太原组和山西组沉积了厚度较大的暗色泥页岩。通过沉积环境分析和泥页岩发育厚度统计,认为山西组泥页岩主要发育在煤3以下,可与太原组泥页岩一起分析研究,太原组暗色泥页岩层段发育厚度占该组地层厚度的68.82%;山西组和太原组暗色泥页岩有机碳含量一般大于1.5%,以中等—极好烃源岩为主;有机质类型为生气型(Ⅲ型)干酪根,镜质体反射率一般在0.6%~1.5%之间,大部分处于成熟阶段。分析认为,山西组下部和太原组暗色泥页岩具备页岩气生成的沉积环境、物质基础、有机质类型和演化条件,明确了山西组下部和太原组暗色泥页岩是区内勘探的目标层位,为进一步工作提供了依据。
Yanggu-Chiping coalfield is a well preserved area of the upper Carboniferous-Permian in the upper Paleozoic in Shandong province.Benxi formation,Taiyuan formation,Shanxi formation and the remaining shihezi formation developed in this area.Taiyuan formation and Shanxi formation have deposited dark-colored mud shale with great thickness.Based on sedimentary environment analysis and mud shale development thickness statistics,it is concluded that the mud shale of Shanxi formation mainly develops below coal 3,which can be analyzed and studied together with the mud shale of Taiyuan formation.The development thickness of dark-colored mud shale in Taiyuan formation accounts for 68.82% of the formation thickness of this group.The organic carbon content of dark mud shale in Shanxi formation and Taiyuan formation is generally more than 1.5%,with medium to excellent hydrocarbon source rocks as the main source rocks.Type organic matter types as gas rock(Ⅲ) kerogen,vitrinite reflectance is generally Between 0.6% and 1.5%,mainly medium-excellent source rocks.According to the analysis,the dark mud shale of the lower shanxi formation and taiyuan formation has the sedimentary environment,material basis,organic matter type and evolutionary conditions for shale gas generation.It is clear that the lower shanxi formation and the dark mud shale of taiyuan formation is the target horizon for exploration in the area,providing a basis for further work.
作者
孙伟清
张春池
彭文泉
鲍怀伟
郝兴中
吕小红
SUN Weiqing;ZHANG Chunchi;PENG Wenquan;BAO Huaiwei;HAO Xingzhong;LV Xiaohong(Shandong Institute of Geological Sciences,Key Laboratory of Gold Mineralization Processes and Resources Utilization Subordinated to the Ministry of Land and Resources,Shandong Key Laboratory of Geological Processes and Resource Utilization in Metallic Minerals,Shandong Ji'nan 250013,China;Shandong Institute of Geological Survey,Shandong Ji'nan 250014,China;Shandong Engineering Research Center of Land Quality Geochemistry and Pollution Prevention,Shandong Ji'nan 250014,China;No.1 Exploration Institute of Geology and Mineral Resources,Shandong Ji'nan 250109,China;Geophysical Surveying Party of Shandong Provincial Coalfield Geology Bureau,Shandong Ji'nan 250104,China)
出处
《山东国土资源》
2019年第7期18-23,共6页
Shandong Land and Resources
基金
山东地质勘查项目山东省页岩气成矿条件研究和资源潜力预测(鲁勘字[2013]1号)
阳谷-茌平含煤区页岩气资源潜力调查评价(鲁勘字[2013]8号)
关键词
上古生界
烃源岩
生烃潜力
阳谷-茌平煤田
Upper Paleozoic
source rock
hydrocarbon generation potential
Yanggu-Chiping coalfield
