Abstract：We measure the elastic properties of two samples,A and B,saturated with different fluids (water and glycerol) at different frequencies (2~2000 Hz and 1 MHz).The results show that the frequency of dispersion increases with pore fluid mobility.The frequency of dispersion is positively correlated with porosity and permeability and negatively correlated with fluid viscosity.P-velocity increases with saturation at high frequencies; P-velocity first increases and then decreases with saturation at low frequencies.This means there is a critical saturation,the value of which is closely related to fluid mobility.
李民龙, 刘浩杰, 杨宏伟, 魏国华, 石建新. 跨频段岩石波速及频散的实验研究[J]. 石油地球物理勘探, 2020, 55(2): 373-378.
LI Minlong, LIU Haojie, YANG Hongwei, WEI Guohua, SHI Jianxin. Experimental study on cross-frequency wave velocity and dispersion in rocks. Oil Geophysical Prospecting, 2020, 55(2): 373-378.
Spencer J W.Stress relaxation at low frequencies in fluid saturated rocks:attenuation and modulus dispersion[J].Journal Geophysics Research,1981,86(B3):1803-1812.
[2]
Paffenholz J and Burkhardt H.Absorption and modulus measurements in the seismic frequency and strain range on partially saturated sedimentary rocks[J].Journal of Geophysical Research,1989,94(B7):9493-9507.
[3]
Batzle M,Han D H,Castagna J.Fluids and frequency dependent seismic velocity of rocks[C].SEG Technical Program Expanded Abstracts,1999,18:5-8.
[4]
Batzle M,Hofmann R,Han D H,et al.Fluids and frequency dependent seismic velocity of rocks[J].The Leading Edge,2001,20(2):168-171.
[5]
Batzle M L,Han D H,Hofmann R.Fluid mobility and frequency-dependent seismic velocity-Direct measurements[J].Geophysics,2006,71(1):N1-N9.
[6]
Adam L,Batzle M.Elastic properties of carbonates from laboratory measurements at seismic and ultrasonic frequencies[J].The Leading Edge,2008,27(8):1026-1032.
[7]
Madonna C,Tisato N,Boutareaud S,et al.A new la-boratory system for the measurement of low frequency seismic attenuation[C].SEG Technical Program Expanded Abstracts,2010,29:2675.
[8]
Mikhaltsevitch V,Lebedev M,Gurevich B.A low-frequency laboratory apparatus for measuring elastic and anelastic properties of rocks[C].SEG Technical Program Expanded Abstracts,2011,30:2256-2260.
[9]
李维新,史謌,王红,等.岩石物理弹性参数规律研究[J].地球物理学进展,2007,22(5):1380-1385.LI Weixin,SHI Ge,WANG Hong,et al.The study on the relationships of elastic properties of rock physics[J].Progress in Geophysics,2007,22(5):1380-1385.
[10]
任科英.实验室岩心声学速度测试中的频散现象[J].石油地球物理勘探,2011,46(5):779-782.REN Keying.Velocity dispersion of ultrasonic core measurement in laboratory[J].Oil Geophysical Prospecting,2011,46(5):779-782.
[11]
勾彬彬,陈学华,瞿雷,等.依赖频率的裂缝孔隙介质弹性属性及参数影响[J].石油地球物理勘探,2018,53(6):1235-1240.GOU Binbin,CHEN Xuehua,QU Lei,et al.Frequency-dependent elastic properties in fractured porous media and impact parameters[J].Oil Geophysical Prospecting,2018,53(6):1235-1240.
[12]
张繁昌,桑凯恒,路亚威.硬币型裂缝介质的频散与衰减[J].石油地球物理勘探,2019,54(4):836-843.ZHANG Fanchang,SANG Kaiheng,LU Yawei.Frequency dispersion and attenuation of porous rocks with penny shaped fractures[J].Oil Geophysical Prospecting,2019,54(4):836-843.
[13]
王大兴,辛可峰,李幼铭,等.地层条件下砂岩含水饱和度对波速及衰减影响的实验研究[J].地球物理学报,2006,49(3):908-914.WANG Daxing,XIN Kefeng,LI Youming,et al.An experimental study of influence of water saturation on velocity and attenuation in sandstone under stratum conditions[J].Chinese Journal of Geophysics,2006,49(3):908-914.
[14]
王峣钧,陈双全,王磊,等.基于斑块饱和模型利用地震波频散特征分析含气饱和度[J].石油地球物理勘探,2014,49(4):715-722.WANG Yaojun,CHEN Shuangquan,WANG Lei,et al.Gas saturation analysis with seismic dispersion attribute based on patchy-saturation model[J].Oil Geophysical Prospecting,2014,49(4):715-722.
[15]
未晛,王尚旭,赵建国,等.含流体砂岩地震波频散实验研究[J].地球物理学报,2015,58(9):3380-3388.WEI Xian,WANG Shangxu,ZHAO Jianguo,et al.Laboratory study of velocity dispersion of the seismic wave in fluid-saturated sandstones[J].Chinese Journal of Geophysics,2015,58(9):3380-3388.
[16]
马霄一,王尚旭,赵建国,等.岩石跨频段实验研究[J].地球物理学进展,2018,33(5):1943-1950.MA Xiaoyi,WANG Shangxu,ZHAO Jianguo,et al.Laboratory study of rocks in multi-frequency band[J].Progress in Geophysics,2018,33(5):1943-1950.
