鄂尔多斯盆地东缘太原组页岩气成藏特征
发布时间：2019-05-28 10:13
【摘要】：以鄂尔多斯盆地东缘海陆过渡相太原组泥页岩为研究对象,通过野外调查和实验测试分析太原组泥页岩的空间展布、储层地球化学与物性特征以及页岩气成藏特征。估算页岩气资源潜力。研究认为:鄂尔多斯盆地东缘太原组泥页岩沉积于三角洲平原和潮坪-o_湖环境,沉积厚度为30~70 m,自东向西变薄;泥页岩有机质为Ⅲ型干酪根,有机碳含量为4.06%,成熟度为0.90%~2.40%,处于中等—过成熟阶段;储层孔隙以微孔为主,脆性矿物含量超过45%,具较好的页岩气源岩和储层条件;页岩气藏主要为深埋热作用与岩浆热作用叠加的热成因型气藏,形成于早白垩世的生烃高峰期。采用体积法估算页岩气资源量约为1.924 3×10~(12)m~3;初步优选出临县—兴县和石楼—隰县—大宁—蒲县等2个勘探有利区,有利区页岩气资源潜力约为0.92×10~(12)m~3,该研究为鄂尔多斯盆地东缘页岩气勘探开发提供了依据。
[Abstract]:Taking the shale of Taiyuan formation in the eastern margin of Ordos Basin as the research object, the spatial distribution, reservoir geochemistry and physical properties and shale gas accumulation characteristics of Taiyuan formation mud shale are analyzed through field investigation and experimental test. Estimate the potential of shale gas resources. It is considered that the shale of Taiyuan formation in the eastern margin of Ordos Basin is deposited in Delta plain and tidal flat-o _ lake environment, with a sedimentary thickness of 30 m and 70 m, which becomes thinner from east to west. The organic matter of shale is type III kerogen, the content of organic carbon is 4.06%, the maturity is 0.90% 鈮，
本文编号：2486969
[Abstract]:Taking the shale of Taiyuan formation in the eastern margin of Ordos Basin as the research object, the spatial distribution, reservoir geochemistry and physical properties and shale gas accumulation characteristics of Taiyuan formation mud shale are analyzed through field investigation and experimental test. Estimate the potential of shale gas resources. It is considered that the shale of Taiyuan formation in the eastern margin of Ordos Basin is deposited in Delta plain and tidal flat-o _ lake environment, with a sedimentary thickness of 30 m and 70 m, which becomes thinner from east to west. The organic matter of shale is type III kerogen, the content of organic carbon is 4.06%, the maturity is 0.90% 鈮，
本文编号：2486969
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