The reservoirs in Baota Formation of Middle Ordovician in South Sichuan are characterized by low porosity and low permeability and belong to a fractured type.

川南地区中奥陶统宝塔组储层具低孔低渗特征，属裂缝性储集类型。

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Daheishan gold deposit is a fractured alteration type and quartz vein type gold deposit, hosted in the outer contact zone of Damiao granite.

大黑山金矿是赋存于大庙花岗岩体外接触带的破碎蚀变岩型和石英脉型金矿。

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For the complexity and particularity of carbonate rock fractured reservoir, compared with pore type sandstone reservoir, damage mechanism and evaluation methods are different.

由于碳酸盐岩裂缝性储层本身的复杂性和特殊性，使得较孔隙型砂岩储层的损害机理和评价方法相差甚远。

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