Reservoir space of the Es3/3-Es1/4 shale in Dongying sag
Reservoir space of the Es3/3-Es1/4 shale in Dongying sag
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发表时间：
2014
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通讯作者：
Hao;Yunqing;Chen;Fukun;Zhu;Jing-quan;Zhang;Shoupeng
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作者：
Hao;Yunqing;Chen;Fukun;Zhu;Jing-quan;Zhang;Shoupeng
东营凹陷沙三段33-沙四段41泥页岩是页岩油气储量较大的烃源岩。为明确储集空间的发育特征及地质意义，采用FMI测井、岩心观察、薄片分析、X射线衍射、荧光显微镜、扫描电镜、压汞法、低温氮气吸附、原子力显微镜、常规物性测试等方法，对东营凹陷沙三段33-沙四段1泥页岩进行了岩石学及储集空间研究。结果表明，页岩富含碳酸盐矿物。含油气岩相主要为微晶层状、纹层状泥质灰岩和钙质粘土岩。微孔中的油主要以膜和凝块的形式存在。泥页岩储集空间为脉状、碳酸盐矿物和粘土矿物组成的网状结构，黄铁矿与基质间为微孔隙。研究成果为东营凹陷页岩油气勘探提供了地质框架。
The Es33–Es41shales in Dongying sag are source rocks with large reserves of shale oil and gas. For the identification of development characteristics and geological significance of the reservoir space, FMI logging,core observation, thin section analysis, X-ray diffraction, fluorescence microscopy, scanning electron microscopy, mercury porosimetry, low-temperature nitrogen adsorption, atomic force microscopy, and conventional physical property testing were used to study the petrology and reservoir space of the Es33–Es41shale in Dongying sag. The results suggest that the shale is rich in carbonate minerals. Phanerocrystalline stratiform and lamellar argillaceous limestone and calcareous claystone are the oil- and gas-bearing lithofacies. The oil in the micropores is mainly present as membranes and clots. The shale reservoir space has a network structure with veins, carbonate and clay minerals, and micropores among pyrite and the matrix. The results provide the geological framework for future shale oil and gas exploration in Dongying sag.