岩石物理参数与地球物理特征关系研究——以QHD326油田为例
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摘要
从孔隙介质理论出发,通过Gassmann理论分析,综合考虑岩石孔隙度、泥质含量、流体类型、应力、温度等多种因素的影响,建立了QHD326油田的地震波速度模型。在此基础上,研究了孔隙及孔隙流体对地震反射特征的影响。根据QHD326油田的地层条件以及不同流体相态下岩石的纵、横波速度和密度等岩心测试数据,通过对叠前正演结果和实际地震资料的分析,总结了岩石物理参数与地球物理特征之间的关系。
Based on the porous media theory,through the analysis of Gassmann theory,seismic wave velocity model of QHD326 oilfield was established by taking various factors into consideration,such as rock porosity,shale content,fluid types,stress and tempera- ture,etc.On this basis,the effect of porosity and pore-fluid on seismic reflection was studied.Comprehensively using the core petrophysical testing data of P-wave velocity,S-wave velocity and density in different fluid phases under the strata conditions,the re- lationship between petrophysical parameters and geophysical fea- ture was summarized for QHD326 oilfield through pre-stack for- ward modeling and actual data analysis.A reliable foundation for further seismic inversion and reservoir characterization was provid- ed through the research.
Based on the porous media theory,through the analysis of Gassmann theory,seismic wave velocity model of QHD326 oilfield was established by taking various factors into consideration,such as rock porosity,shale content,fluid types,stress and tempera- ture,etc.On this basis,the effect of porosity and pore-fluid on seismic reflection was studied.Comprehensively using the core petrophysical testing data of P-wave velocity,S-wave velocity and density in different fluid phases under the strata conditions,the re- lationship between petrophysical parameters and geophysical fea- ture was summarized for QHD326 oilfield through pre-stack for- ward modeling and actual data analysis.A reliable foundation for further seismic inversion and reservoir characterization was provid- ed through the research.
引文
1 Han D,Nur A,Morgan D.Effects of porosity and clay content on acoustic properties of sandstone and uncon- solidated sediments[D].California,USA:Stanford U- niversity,1986
2 Wang Z J.Wave velocities in hydrocarbons and hydro- carbon saturated rocks.,with applications to EOR mo- nitoring[D].California,USA:Stanford University,1988
3 Gassmann F.Elastic waves through a packing of spheres [J].Geophysics,1951,16(4):673～685
4 Wang Z J,Nur A.Effect of temperature on wave veloc- ities in sands and sandstones with heavy hydrocarbon [J].Expanded Abstracts of 56~(th) Annual Internat SEG Mtg,1986,3～5
5 Wang Z J,Nur A.Velocities in hydrocarbons and hydro- carbon-saturated rocks and sands[J].Expanded Abstracts of 57~(th) Annual Internat SEG Mtg,1987,1～4
6 Wang Z J,Nur A.Effect of different pore fluids on ve- locities in rocks[J].Expanded Abstracts of 58~(th) Annu- al Internat SEG Mtg,1988,548～550
7 Wang Z J,Nur A.Effect of different pore fluids on ve- locities in rocks[J].Expanded Abstracts of 58~(th) Annu- al Internat SEG Mtg,1988,928～930
8汪云家，王兴谋，韩文功．济阳坳陷三维地震资料中亮点气藏的特征及识别方法[J]．石油物探，1995，34(4)：67～72
9牟永光．地震勘探资料数据处理方法[M]．北京：石油工业出版社，1981．226～261
10刘传虎，赵玉华，王志高．CX地区含油储层地震反射特征及油气预测效果[J]．石油物探，1997，36(1)：13～20
11杜世通．地震波动力学[M]．山东东营：石油大学出版社，1996．1～45
12印兴耀，韩文功，李振春，等．地震技术新进展[M]．山东东营：中国石油大学出版社，2006．48～71
13宋丽莉，葛洪魁，王宝善．疏松砂岩弹性波速模型的研究[J]．石油大学学报(自然科学版)，2004，28(6)：38～40
14宋丽莉，葛洪魁，王宝善．疏松砂岩弹性波速的实验研究[J]．测井技术，2004，28(6)：487～490
15张璐，印兴耀．油气储层识别软件的研制[J]．中国石油大学学报(自然科学版)，2007，31(4)：24～29
16郭栋，印兴耀，吴国忱．横波速度计算方法与应用[J]．石油地球物理勘探，2007，42(5)：535～538
17殷八斤．AVO技术的理论与实践[M]．北京：石油工业出版社，1995．205～217
2 Wang Z J.Wave velocities in hydrocarbons and hydro- carbon saturated rocks.,with applications to EOR mo- nitoring[D].California,USA:Stanford University,1988
3 Gassmann F.Elastic waves through a packing of spheres [J].Geophysics,1951,16(4):673～685
4 Wang Z J,Nur A.Effect of temperature on wave veloc- ities in sands and sandstones with heavy hydrocarbon [J].Expanded Abstracts of 56~(th) Annual Internat SEG Mtg,1986,3～5
5 Wang Z J,Nur A.Velocities in hydrocarbons and hydro- carbon-saturated rocks and sands[J].Expanded Abstracts of 57~(th) Annual Internat SEG Mtg,1987,1～4
6 Wang Z J,Nur A.Effect of different pore fluids on ve- locities in rocks[J].Expanded Abstracts of 58~(th) Annu- al Internat SEG Mtg,1988,548～550
7 Wang Z J,Nur A.Effect of different pore fluids on ve- locities in rocks[J].Expanded Abstracts of 58~(th) Annu- al Internat SEG Mtg,1988,928～930
8汪云家，王兴谋，韩文功．济阳坳陷三维地震资料中亮点气藏的特征及识别方法[J]．石油物探，1995，34(4)：67～72
9牟永光．地震勘探资料数据处理方法[M]．北京：石油工业出版社，1981．226～261
10刘传虎，赵玉华，王志高．CX地区含油储层地震反射特征及油气预测效果[J]．石油物探，1997，36(1)：13～20
11杜世通．地震波动力学[M]．山东东营：石油大学出版社，1996．1～45
12印兴耀，韩文功，李振春，等．地震技术新进展[M]．山东东营：中国石油大学出版社，2006．48～71
13宋丽莉，葛洪魁，王宝善．疏松砂岩弹性波速模型的研究[J]．石油大学学报(自然科学版)，2004，28(6)：38～40
14宋丽莉，葛洪魁，王宝善．疏松砂岩弹性波速的实验研究[J]．测井技术，2004，28(6)：487～490
15张璐，印兴耀．油气储层识别软件的研制[J]．中国石油大学学报(自然科学版)，2007，31(4)：24～29
16郭栋，印兴耀，吴国忱．横波速度计算方法与应用[J]．石油地球物理勘探，2007，42(5)：535～538
17殷八斤．AVO技术的理论与实践[M]．北京：石油工业出版社，1995．205～217
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