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采用Metravib分析仪在-50℃~100℃温度条件及300~400Hz的正弦波作用下进行泵油饱和砂岩应力应变实验,获得了虚模量温度峰与对应实模量的剧烈亏损规律,显示出饱和砂岩有别于由衰减峰引起的典型粘弹性行为。利用超声法对饱和大理岩与花岗岩样品进行波速和衰减特性测试,获得了大理岩的Biot衰减峰变化规律。该研究对岩石物理理论模型的发展具有重要意义,可以利用岩层的衰减和波速频散特性进行油气藏的预测,降低勘探风险。
Metravib analyzer was used to conduct stress-strain experiment of saturated oil-saturated sandstone under the condition of temperature of -50 ℃ ~ 100 ℃ and sine wave of 300 ~ 400Hz, and the violent loss regularity of the virtual modulus temperature peak and corresponding real modulus was obtained. Saturated sandstone is distinguished from the typical viscoelastic behavior caused by attenuation peaks. The wave velocity and attenuation characteristics of saturated marble and granite samples were tested by ultrasonic method. The variation law of Biot attenuation peak of marble was obtained. The research is of great significance to the development of rock physics theory model, which can make use of the characteristics of rock mass attenuation and wave velocity dispersion to predict oil and gas reservoirs and reduce exploration risk.