高灵敏度流体因子的构建原则及影响因素分析
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摘要
随着油气勘探和开发的深入,油气储集体越来越复杂,希望从地震资料中提取更多的反映储层及流体特征的信息,这对叠前反演技术和流体识别技术都提出了较高的要求。基于Gassmann方程构建的流体因子可较好地指示储层及流体,得到了较为广泛地应用,但因子构建的多样化、调节参数取值的主观化,以及单一追求流体识别因子的高敏感度等因素,制约了流体识别在实际应用中的实效性。通过对常用的流体识别因子进行解构,得到影响其敏感度的因素,结合叠前反演的参数进行新的流体因子构建,并与常用的流体因子进行对比分析。分析结果表明,新构建的流体因子具有较高的灵敏度和较好的有效性。
With the exploration and development of oil and gas in depth,oil and gas reservoirs become complex increasingly,people want to extract more information of layer and fluid characteristics to reflect the reservoir from seismic data,the prestack inversion technology and fluid identification technology have been put forward to higher requirements than before.At present,fluid factor constructed on the Gassmann equation can indicate the reservoir and fluid better,so it has been widely used.But some factors restricts the effectiveness of fluid identification in practical application,which includes diversity of constructed factor,subjectivity of adjusting parameters,single subjective pursuit for the high sensitivity of fluid identification and other factors.Based on the deconstruction of the fluid identification factor which commonly used,get the factors influencing the sensitivity of parameters.Combined with the parameters of prestack inversion to build new fluid factor,and compared with the fluid factor commonly used.Analysis results show that the new fluid factor has the higher sensitivity and better effectiveness.
With the exploration and development of oil and gas in depth,oil and gas reservoirs become complex increasingly,people want to extract more information of layer and fluid characteristics to reflect the reservoir from seismic data,the prestack inversion technology and fluid identification technology have been put forward to higher requirements than before.At present,fluid factor constructed on the Gassmann equation can indicate the reservoir and fluid better,so it has been widely used.But some factors restricts the effectiveness of fluid identification in practical application,which includes diversity of constructed factor,subjectivity of adjusting parameters,single subjective pursuit for the high sensitivity of fluid identification and other factors.Based on the deconstruction of the fluid identification factor which commonly used,get the factors influencing the sensitivity of parameters.Combined with the parameters of prestack inversion to build new fluid factor,and compared with the fluid factor commonly used.Analysis results show that the new fluid factor has the higher sensitivity and better effectiveness.
引文
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[4]BRIANH.RUSSELL etal.Fluid-property discrimination with AVO:A Biot-Gassmann perspective[J].Geophysics,2003,68(1):29-39.
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[6]宗兆云,印兴耀,吴国忱.基于叠前地震纵横波模量直接反演的流体检测方法[J].地球物理学报,2012,55(1):284-292.ZONG Z Y,YIN X Y,WU G C.Fluid identification method based on compressional and shear modulus direct inversion[J].Chinese Geophys,2012,55(1):284-292.(In Chinese)
[7]宁忠华,贺振华,黄德济.基于地震资料的高灵敏度流体因子[J].石油物探,2006,45(3):239-242.LIN ZH H,HE ZH H,HUANG D J.High sensitive fluid identification based on seismia data[J].GPP,2006,45(3):239-242.(In Chinese)
[8]王栋,贺振华,黄德济.新流体识别因子的构建与应用分析[J].石油物探,2009,48(2):141-145.WANG D,HE ZH H,HUANG D J.Constraction of a new fluid identification factor and analysis on its application[J].GPP,2009,48(2):141-145.(In Chinese)
[2]GOODWAY B,CHEN T,DOWNTON J.Improved AVO fluid detection and lithology discrimination using Lamépetrophysical parameters[C].67th Annual International SEG meeting,Expanded abstracts,1997:183-186.
[3]GRAY D.Bridging the gap:using AVO to detect changes in fundamental elastic constants[C].59th Ann Internet Expanded Abstract of 59th SEG Mtg,1999:852-855.
[4]BRIANH.RUSSELL etal.Fluid-property discrimination with AVO:A Biot-Gassmann perspective[J].Geophysics,2003,68(1):29-39.
[5]MARK QUAKENBUSH,BRUCE SHANG,CHRIS TUTTLE.Poisson impedance[J].The Leading Edge,2006:128-138.
[6]宗兆云,印兴耀,吴国忱.基于叠前地震纵横波模量直接反演的流体检测方法[J].地球物理学报,2012,55(1):284-292.ZONG Z Y,YIN X Y,WU G C.Fluid identification method based on compressional and shear modulus direct inversion[J].Chinese Geophys,2012,55(1):284-292.(In Chinese)
[7]宁忠华,贺振华,黄德济.基于地震资料的高灵敏度流体因子[J].石油物探,2006,45(3):239-242.LIN ZH H,HE ZH H,HUANG D J.High sensitive fluid identification based on seismia data[J].GPP,2006,45(3):239-242.(In Chinese)
[8]王栋,贺振华,黄德济.新流体识别因子的构建与应用分析[J].石油物探,2009,48(2):141-145.WANG D,HE ZH H,HUANG D J.Constraction of a new fluid identification factor and analysis on its application[J].GPP,2009,48(2):141-145.(In Chinese)
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