水铝硅酸盐矿石的形成条件综述——以鄂尔多斯盆地延长组为例

A review of the formation conditions of water aluminosilicate minerals-a case study of Yanchang Formation in Ordos Basin

水铝硅酸盐矿石的胶结现象在很多含油气盆地的碎屑岩储层中被观察到,在温度跟压力条件不同的情况下,水铝硅酸盐矿石的形成主要有高岭石与方解石形成水铝硅酸盐矿石、斜长石蚀变形成水铝硅酸盐矿石。在成岩埋藏条件下斜长石蚀变形成水铝硅酸盐矿石的反应在温度36℃的条件下就可以进行,因而推断鄂尔多斯延长组的水铝硅酸盐矿石主要是由早期火山物质蚀变与斜长石蚀变形成。

The phenomenon of water aluminum silicate cement was observed in clastic reservoirs in many petroliferous basins, in the temperature and pressure conditions under the condition of different water formed aluminum silicate minerals are mainly kaolinite and calcite formation water aluminum silicate minerals and plagioclase into water erosion deformation of aluminum silicate minerals. In the diagenetic burial conditions of plagioclase into water erosion deformation of aluminum silicate ore reaction at a temperature of 36 DEG C under the condition can be carried out, thus infer that the Yanchang formation water Ordos aluminum silicate minerals is mainly composed of early volcano material alteration and the alteration of plagioclase formation.