摘要
对浙西北地区临安区块及周缘早寒武世荷塘组页岩进行了露头及野外路线地质调查、样品测试与邻井资料分析认为：临安区块荷塘组黑色页岩厚度大（150～300 m）,有机碳含量高（0.22%～13.56%）,干酪根类型好（以Ⅰ型为主,含少量Ⅱ1）,热演化适中,脆性矿物含量高（大于50%）,页岩含气量高,具有形成页岩气藏的潜力。综合考虑目的层位、地表出露地层及产状、构造形态、断裂发育情况、页岩有效厚度及埋藏深度、地形地貌等因素,优选出临安区块3个勘查有利区,并预测了下一步勘探方向。
This paper focuses on the early Cambrian Hetang formation in Lin＇an block of the northwest Zhejiang province. The methods applied in this study include shale outcrops investigation, sampling, laboratory analysis,and comparison with the drilling data from adjacent areas. Studies show that the Hetang formation have great potentiality to form shale gas reservoir, which has thick black shale（150~300 m）, excessive organic carbon content（0.22% ~13.56%）, good kerogen type（ Ⅰ,Ⅱ1）, high degree of thermal evolution, high brittleness mineral content（〉50%）, and high shale gas content. Considering the objective strata, the surface outcropping formation and occurrence, structural morphology, the fracture development situation, the effective thickness of shale and buried depth, topography, and the other factors, 3 shale gas are optimized as potential exploration areas,and we also predict the next exploration direction.
出处
《地质调查与研究》
2016年第2期123-129,共7页
Geological Survey and Research
基金
中国地质调查局地质调查项目"安徽合肥盆地页岩气基础地质调查和资源潜力评价(12120114019801)"
安徽省地质矿产勘查局科技项目"皖南地区页岩气成藏地质背景和评价方法研究(KJ2012-01)"
关键词
临安区块
页岩气
荷塘组
勘探前景
Lin＇an block
shale gas
Hetang formation
exportion prospect
