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摘要: CO2矿物捕获是指将大气中排放的CO2气注入到地下深部的含水层、油气田等渗透性储层中，通过一系列物理、化学反应，最终将CO2气以碳酸盐矿物的形式“固结”在岩石中。火山碎屑岩具有铁、镁离子含量高且容易释放及分布广泛等特点，是有前途的矿物捕获岩石类型。塔木察格盆地塔南凹陷铜钵庙组火山碎屑岩中发育大量的片钠铝石特征矿物，进一步证实了火山碎屑岩的矿物捕获能力。在火山碎屑岩中，CO2注入之后形成的矿物有片钠铝石、铁方解石、铁白云石等碳酸盐矿物，碳酸盐总量高达30%，说明CO2矿物捕获的能力较大。
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关键词:
- 片钠铝石火山碎屑岩矿物捕获塔南凹陷
Abstract: The mineral trapping of CO2 refers to the atmospheric emissions of CO2 gas was injected into the formation of deep aquifers, oil and gas fields, via a series of physical and chemical reactions, CO2 gas will eventually be consolidated in the carbonate minerals. Pyroclastic rocks with high content of magnesium ions and easy to be released and abroad distributing can be used as a promising rock type for mineral trapping,Tongbomiao formation of Tanan sag in Tamuchage basin contain abundant dawsonitebearing volcaniclastic rocks,which further proves the mineral trapping capabilities of pyroclastic rocks .There are three carbonate minerals in pyroclastic rocks after the injection of CO2 , which contain dawsonite ,ferrocalcite and ankerite ,the total content is up to 30% ,which suggests the capacity of CO2 nineral trapping is large enough. -
Key words:
- pyroclastic rocks
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