岩石物理弹性参数规律研究
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摘要
根据辽东湾凹陷某区在地层条件和不同流体相态(气饱和、水饱和等)下岩石纵波速度、横波速度及密度等岩心测试数据,以及岩石矿物成分、孔隙度等常规岩心分析数据,统计分析了岩石弹性参数变化规律.采用有效流体模型、斑块饱和模型进行了纵、横波速度理论计算,并和实验测量结果比较,认为高孔、高渗岩石可以看作有效流体模型,低孔、低渗岩石更接近斑块饱和模型.这些规律和认识对于指导储层预测和油气检测及地震振幅综合解释有重要的意义.
The relationships among elastic properties of rock physics have been discussed based on in situ measurement data with different pore fluid types and saturation in the area of LiaoDong Gulf,combined with clay content and porosity of rocks.Comparing measurement data with predicted data by effective-fluid model and patchy-saturated model,such as compressional and shear velocity,the results show that effective-fluid model is applicable to rocks with high porosity and high permeability well,while patchy-saturated model is more applicable to rocks with low porosity and low permeability.These conclusions are important to reservoir and pore fluid predictions from seismic data.
The relationships among elastic properties of rock physics have been discussed based on in situ measurement data with different pore fluid types and saturation in the area of LiaoDong Gulf,combined with clay content and porosity of rocks.Comparing measurement data with predicted data by effective-fluid model and patchy-saturated model,such as compressional and shear velocity,the results show that effective-fluid model is applicable to rocks with high porosity and high permeability well,while patchy-saturated model is more applicable to rocks with low porosity and low permeability.These conclusions are important to reservoir and pore fluid predictions from seismic data.
引文
[1]Fred J.Hilterman.Seismic Amplitude Interpretation:2001Distinguished Instructor Short Course,2001.
[2]Castagna J P,Batzle M L,Kan T K.Rock physics-The linkbetween rock properties and AVO response:In Castagna J P,Backus M M,eds.,Offset-dependent reflectivity-Theory andpractice of AVO anomalies,Soc.Expl.Geophys.Investiga-tions in Geophysics no 8,1993,135~171.
[3]Wang Zhijing(Zee).Fundamentals of seismic rock physics[J].Geophysics,2001,66(2):398~412.
[4]沈联蒂,史謌.岩性、含油气性、有效覆盖压力对纵、横波速度的影响[J].地球物理学报,1994,37(3):391~398.
[5]王东,张海澜,王秀明.部分饱和孔隙岩石中声波传播数值研究[J].地球物理学报,2006,49(2):524~532.
[6]马中高,解吉高.岩石的纵、横波速度与密度的规律研究[J].地球物理学进展,2005,20(4):905~910.
[7]云美厚,丁伟,杨长春.油藏水驱开采时移地震监测岩石物理基础测量[J].地球物理学报,2006,49(6):1813~1818.
[8]孟召平,张吉昌,Joachim Tiedemann.煤系岩石物理力学参数与声波速度之间的关系[J].地球物理学报,2006,49(5):1505~1510.
[9]赵群,郭建,郝守玲,耿建华.模拟天然气水合物的岩石物理特性模型实验[J].地球物理学报,2005,48(3):649~655.
[10]陶果,岳文正,谢然红,等.岩石物理的理论模拟和数值实验新方法[J].地球物理学进展,2005,20(1):4~11.
[11]Murphy W,Reischer A,Hsu K.Modulus decomposition ofcompressional and shear velocities in sand bodies[J].Geo-physics,1993,58(2):227~239.
[12]史謌,杨东全.岩石波速和孔隙度、泥质含量之间的关系研究[J].北京大学学报(自然科学版),2001,37(3):379~384.
[13]Shi G,Shen W L,Yang D Q.The relationship of wave veloc-ities with saturation and fluid distribution in pore space[J].Chinese J Geophys.(in Chinese),1994,37(3):391~398.
[14]Gassmann F.Elastic waves through a packing of spheres[J].Geophysics,1951,16673~16685.
[15]Biot M A.The theory of propagation of elastic waves in a flu-id-saturated solid,I lower frequency range,II higher frequen-cy range[J].J Acoust Soc Am.1956,168~191.
[16]Domenico S N.Effect of brine-gas mixture on velocity in anunsolidated sand reservoir[J].Geophysics,1976,41:887~894.
[17]Wood A B.A textbook of sound:G.Bell and Sons,1941.
[18]Mavko G,Mukerji T.Bounds on low-frequency seismic ve-locities in partial saturated rocks[J].Geophysics,1995,63:918~924.
[19]Mavko M G.Nolen-Hoeksema R.Estimating seismic veloci-ties at ultrasonic frequencies in partially saturated rocks[J].Geophysics,1994,59:252~258.
[2]Castagna J P,Batzle M L,Kan T K.Rock physics-The linkbetween rock properties and AVO response:In Castagna J P,Backus M M,eds.,Offset-dependent reflectivity-Theory andpractice of AVO anomalies,Soc.Expl.Geophys.Investiga-tions in Geophysics no 8,1993,135~171.
[3]Wang Zhijing(Zee).Fundamentals of seismic rock physics[J].Geophysics,2001,66(2):398~412.
[4]沈联蒂,史謌.岩性、含油气性、有效覆盖压力对纵、横波速度的影响[J].地球物理学报,1994,37(3):391~398.
[5]王东,张海澜,王秀明.部分饱和孔隙岩石中声波传播数值研究[J].地球物理学报,2006,49(2):524~532.
[6]马中高,解吉高.岩石的纵、横波速度与密度的规律研究[J].地球物理学进展,2005,20(4):905~910.
[7]云美厚,丁伟,杨长春.油藏水驱开采时移地震监测岩石物理基础测量[J].地球物理学报,2006,49(6):1813~1818.
[8]孟召平,张吉昌,Joachim Tiedemann.煤系岩石物理力学参数与声波速度之间的关系[J].地球物理学报,2006,49(5):1505~1510.
[9]赵群,郭建,郝守玲,耿建华.模拟天然气水合物的岩石物理特性模型实验[J].地球物理学报,2005,48(3):649~655.
[10]陶果,岳文正,谢然红,等.岩石物理的理论模拟和数值实验新方法[J].地球物理学进展,2005,20(1):4~11.
[11]Murphy W,Reischer A,Hsu K.Modulus decomposition ofcompressional and shear velocities in sand bodies[J].Geo-physics,1993,58(2):227~239.
[12]史謌,杨东全.岩石波速和孔隙度、泥质含量之间的关系研究[J].北京大学学报(自然科学版),2001,37(3):379~384.
[13]Shi G,Shen W L,Yang D Q.The relationship of wave veloc-ities with saturation and fluid distribution in pore space[J].Chinese J Geophys.(in Chinese),1994,37(3):391~398.
[14]Gassmann F.Elastic waves through a packing of spheres[J].Geophysics,1951,16673~16685.
[15]Biot M A.The theory of propagation of elastic waves in a flu-id-saturated solid,I lower frequency range,II higher frequen-cy range[J].J Acoust Soc Am.1956,168~191.
[16]Domenico S N.Effect of brine-gas mixture on velocity in anunsolidated sand reservoir[J].Geophysics,1976,41:887~894.
[17]Wood A B.A textbook of sound:G.Bell and Sons,1941.
[18]Mavko G,Mukerji T.Bounds on low-frequency seismic ve-locities in partial saturated rocks[J].Geophysics,1995,63:918~924.
[19]Mavko M G.Nolen-Hoeksema R.Estimating seismic veloci-ties at ultrasonic frequencies in partially saturated rocks[J].Geophysics,1994,59:252~258.
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