关键词: 物理模拟技术, 疏松岩石, 弱胶结, 非固结胶结物, 抗压强度, 胶结温度

Abstract: The synthetic unconsolidated samples with weak cementation and high porosity were prepared using physical simulation technique.The sensitivity of physical parameters in loose sandstone reservoir was experimented with physical modeling.The experimental results showed that the velocity of elastic waves was independent to the saturation of loose sandstone compared with that of tight sandstone.The property of cement has a great effect on the physical characteristics of loose sandstone.When a little amount of inter-grain cements or clay is put into pure sandstone,the velocities of elastic wave will substantially changed.The cementing temperature has an influence on the compressive strength of the rock samples.Low temperature will make reaction strength deficiency,and high temperature will make the rock samples become relaxed.

Key words: physical modeling technology, loose rock, weak cementation, unconsolidated cement, compressive strength, cementing temperature