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沉积环境与构造运动对页岩气成藏的影响——以渝东南地区下寒武统牛蹄塘组黑色岩系为例

Sedimentary Environment and Tectonic Movement and Their Effects on Shale Gas Accumulation—A Case Study of Black Rocks in the Lower Cambrian Niutitang, Southeast Chongqing
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摘要 沉积环境和构造运动是决定一套岩石地层特性的关键因素。以渝东南地区下寒武统牛蹄塘组黑色岩系为例,通过采样测试研究,总结概括了沉积环境与构造运动对页岩气成藏的影响作用。结论认为:1) 沉积环境与构造运动在页岩气成藏过程中起着决定性作用;2) 沉积环境能够对泥页岩的岩石学特征、矿物学特征、物性特征与有机质类型及丰度等产生较大影响;3) 构造运动能够对泥页岩的保存、有机质成熟度及储层物性特征等产生较大影响;4) 受沉积环境和构造运动的影响,渝东南地区下寒武统黑色岩系具备有利于页岩气成藏的地质条件。 Sedimentary environment and tectonic movement are the key factors to decide rock formation properties. By taking the black rocks in the Lower Cambrian Niutitang in southeast Chongqing as an example, the effects of sedimentary environment and tectonic movement on shale gas accumulation are summarized. The findings are as follows: 1) Sedimentary environment and tectonic movement plays a decisive role in the process of shale gas accumulation;2) The sedimentary environment can have a greater impact on the petrology, shale mineralogy characteristics, physical characteristics and the type of organic matter abundance;3) The tectonic movement can have an influence on the maturity of organic matter and reservoir characteristics;4) Affected by the sedimentary environment and tectonic movement, there is a great geologic condition for the development of shale gas plays in the Lower Cambrian Niutitang in southeast Chongqing.
出处 《石油天然气学报》 CAS 2022年第3期165-171,共7页 Journal of Oil and Gas Technology
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