Same as the burial depth, the burial time also has great effect on the evolution of porosity of the classic rocks during compaction, which is clarified by three aspects in this paper.
该函数充分表明，在压实作用阶段，埋藏时间和埋深两个因素对地层孔隙度演化的影响都是非常重要的。
Aim To discuss the relationship of diagenesis and porosity evolution in Malang Depression.
目的探讨马朗凹陷成岩作用与孔隙演化的关系。
Study indicates that the formation and evolution of the porosity are controlled by diagenesis.
研究表明：孔隙的形成和演化受成岩作用的控制。
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。
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。
Diagenesis control the porosity evolution, with symbolic meaning, it is very important for the exploration of the oil and gas.
成岩作用控制孔隙演化，对油气开采具有重要的指示作用。
The diagenesis-porosity evolution history is beneficial to porosity preservation of Shahejie Formation at great depths in the vicinity of Qi'nan fault-step zone, Bohai Bay.
歧南断阶带的成岩-孔隙演化模式表明，研究区内特定的成岩-孔隙演化史有利于深层沙河街组二段砂岩孔隙的保存。
Effect of foaming time on the density and porosity of foam aluminum was discussed in detail. Evolution of pores in the foaming process was described, and the foaming mechanism was analysed.
详细讨论了发泡时间对泡沫铝密度、孔隙率的影响，描述了发泡过程孔结构的演变过程，并对发泡机理进行分析。
A numerical analysis method is presented to simulate the shrinkage porosity formation in steel castings on the basis of heat flow, interdendritic fluid flow and possible evolution of dissolved gases.
提出了预测铸钢件中缩松缺陷的数值方法，考虑了传热、枝晶间液相流动和气体析出等因素。
Finally, the model of matrix porosity and the evolution of permeability tensor of Microfracture for hydraulic fracturing rock is established.
最后，建立水力压裂岩体基质孔隙和微裂缝渗透张量演化模型。
Finally, the model of matrix porosity and the evolution of permeability tensor of Microfracture for hydraulic fracturing rock is established.
最后，建立水力压裂岩体基质孔隙和微裂缝渗透张量演化模型。
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