岩性油气藏 ›› 2021, Vol. 33 ›› Issue (1): 121130.doi: 10.12108/yxyqc.20210112
高计县1, 孙文举1, 吴鹏1, 段长江2
GAO Jixian1, SUN Wenju1, WU Peng1, DUAN Changjiang2
摘要: 为进一步拓展鄂尔多斯盆地东缘致密气勘探前景,在区域烃源岩、储层、盖层和运移输导体系分析基础上,结合流体包裹体测试,开展了神府区块石炭系—二叠系(C—P)致密气成藏条件研究。结果表明:主力煤层厚度较大且分布稳定,较大的生烃强度构成成藏的基本条件;储层整体呈现低孔低渗特征,以残余粒间孔和粒内溶孔为主要储集空间;C—P内部广泛发育的泥岩具备良好的封盖能力;流体包裹体均一温度指示1期持续性成藏;可划分出源内、近源和远源等3种储盖组合模式。不同层位源储配置的差异控制着不同成藏模式的形成。该研究成果进一步拓展了鄂尔多斯盆地油气勘探开发前景,为研究区及类似致密气田勘探提供了理论基础。
中图分类号:
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