Abstract：The ultrasonic tests of 28 carbonate samples with different gas saturation from Sichuan Basin for energy attenuation characteristics were conducted and the results show that：① P-wave and S-wave attenuation coefficients are different.With the gas saturation increase, P-wave attenuation increases firstly and then decreases.The maximum attenuation coefficient appears when gas-saturation in the range of 0.4～0.6.S-wave attenuation shows linear decrease with gas saturation increase, and its attenuation coefficient is smaller than that of P-wave.②For a given gas saturation, P-wave attenuation increases with frequency increase.③ For a given gas saturation, P-wave attenuation increases with the porosity increase.With the porosity increase, S-wave attenuation has little increase when the gas-saturation is higher than 0.6, but much larger increase when the gas-saturation is less than 0.3.
刘向君, 王森, 刘洪, 朱洪林, 陈乔, 龙瀛. 碳酸盐岩含气饱和度对超声波衰减特性影响的研究[J]. 石油地球物理勘探, 2012, 47(6): 926-930.
Liu Xiangjun, Wang Sen, Liu Hong, Zhu Honglin, Chen Qiao, Long Ying. Experimental test on the effects of carbonate gas saturation on ultrasonic wave attenuation characteristics. OGP, 2012, 47(6): 926-930.
