鸡西盆地张新地区浅成侵入体对砂岩储层粘土矿物的影响

射线衍射分析测试方法对鸡西盆地张新地区浅成岩侵入后上下盘砂岩储层中的粘土矿物进行分析，粘土矿物具有3种组合形式：①伊蒙混层＋伊利石＋绿泥石±高岭石±绿蒙混层组合；②伊利石＋绿泥石±伊蒙混层组合；③伊蒙混层＋高岭石＋伊利石＋绿泥石组合。上盘围岩伊利石平均相对含量随远离辉绿玢岩体的距离增大而减少，伊蒙混层、高岭石、绿泥石平均相对含量增大；下盘围岩伊利石、高岭石、绿泥石平均相对含量随远离辉绿玢岩体的距离增大而增加，伊蒙混层平均相对含量减少。伊利石和高岭石相对含量的增加与其对孔隙度的影响效果相反;伊利石和绿泥石相对含量的增加对渗透率的影响效果相反。

The Effects of Hypabyssal Intrusive to Clay Mineral of Sandstone Reservoir in Zhangxin Area in Jixi Basin

The clay mineral from the sandstone reservoir with hypabyssal intrusives is analyzed by X-diffraction. Three kinds of clay mineral assemblages are recognized at Xifeng well. They are illite-smectite mixed-layer+chilkinite+chloritoid±kaolinite±chloritoid-smectite mixed-layer assemblage, chilkinite+chloritoid±chloritoid-smectite mixed-layer assemblage and chloritoid-smectite mixed-layer+kaolinite +chilkinite +chloritoid assemblage.
The average content of chilkinite in the surrounding rocks on hanging wall decreases with the increase of the distance beyond the diabase-prophyrite. The average contents of illite-smectite mixed-layer, kaolinite and chloritoid increase with the increase of the distance. The average contents of chilkinite, kaolinite and chloritoid in the surrounding rocks on bottom wall increase with the increase of the distance. But the average contents of illite-smectite mixed layer decreases with the increase of the distance. With the increase of the illite, the porosity and thickness of the surrounding rocks increases, while the permeability of the surrounding rocks decrease.