以鄂尔多斯盆地延长组页岩储层为研究对象,综合利用X衍射、场发射扫描电镜、等温吸附以及岩石热解实验,研究粘土矿物转化对鄂尔多斯延长页岩储层微孔的影响,结果表明:粘土矿物转化、胶结作用、溶蚀作用对鄂尔多斯延长组页岩储层孔隙均有影响,胶结作用使得岩石更加致密,溶蚀作用产生溶蚀孔增加孔隙体积;粘土矿物的转化主要为蒙脱石发生脱水作用转为伊利石,这一过程会增加岩石孔隙度。 Taking the shale reservoir of Yanchang Formation in the Ordos Basin as the research object, the effects of clay mineral transformation on the micropore of the shale reservoir in the Ordos Basin were studied comprehensively using X-ray diffraction, field emission scanning electron microscopy, isothermal adsorption and pyrolysis experiments. The results show that: Clay mineral transformation, cementation and dissolution have effects on the porosity of shale reservoirs in Ordos Yanchang Formation. The cementation makes the rocks more compact and the dissolution pores increase the pore volume. The conversion of clay minerals is mainly due to dehydration of montmorillonite Conversion to illite, this process will increase the rock porosity.