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1·Primary porosity is the main pore type in sandstone reservoir.

砂岩储层的孔隙类型以原生孔隙为主。

2·This is attributable to the preservation of a part of the primary porosity in the rocks due to the formation of high porosity pressure.

这种现象产生的原因是保持了一部分原有孔隙度，而保持孔隙度的控制因素是形成高孔隙压力。

3·The loss of primary porosity is caused by compaction, and pore texture reformation is resulted from the solution of unstable components.

压实作用导致原生孔隙大量损失，不稳定组分的溶解则是改善孔隙结构的主要因素。

4·Porosity evolution in the rock has experienced destruction of primary porosity and construction and then re-destruction of secondary porosity.

孔隙演化经历了原生孔隙的破坏、次生孔隙的形成和次生孔隙的破坏三个阶段。

5·The study of porosity evolution shows the compaction is the main cause resulting in the disappearance of primary porosity, and the next one is cementation.

通过孔隙演化研究发现，压实作用是该区原始孔隙损失的最主要因素；其次为胶结作用。

6·The unconsolidated sediment being consolidation and dehydration, while the primary porosity is destroyed fatally, is due to the compaction and pressure solution.

压实、压溶作用使早期未固结的沉积物压实脱水，对沉积物的原生孔隙有致命的破坏性作用。

7·The compactionand secondary enlargement of quartz lead to the great decrease of primary porosity of clastic rocks, and dissolution is contributed to the formation of secondary pore space.

压实作用和石英的次生加大使碎屑岩的原生孔隙度极大的降低，溶解作用是次生孔隙形成的主要因素。

8·Porosity, a key index of porous materials, is the most primary factor for many properties of porous materials.

孔率是多孔材料的关键指标，是多孔材料若干性能最主要的决定性因素。

9·Decrease of sandstone porosity is mainly caused by compaction and cementation, which contribute 22% and 15% to the loss of primary pores, respectively.

压实作用和胶结作用是砂岩孔隙度降低的主要原因，分别造成22%和15%的原生孔隙丧失。

10·Volcanics mainly growth gas pocket, primary rift and secondary rift, The secondary porosity of clastic rocks is much more developed.

火山岩储层主要发育气孔、原生裂缝、次生裂缝；碎屑岩则以次生孔隙为主。