The porosity increasing is primarily due to the resolution of carbonate so that a large amount of the secondary pore space is resulted.

而碳酸盐的溶解作用形成了大量次生孔隙空间，增加了砂岩的孔隙度。

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To some extent, the chemical erosion made the physical property of reservoir getting better and increased the secondary pore relatively.

而溶蚀作用从一定程度上使储层物性得到了改善，次生孔隙相对增多。

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The main pore type of the reservoir is primary remained intergranular pore, the dissolution of the feldspar and early carbonate cement results in the secondary pore.

储层以原生剩余粒间孔隙为主，长石及早期碳酸盐胶结物的溶解是形成次生孔隙的主要原因。

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