盒8地层岩石物理参数及地震响应模型研究
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摘要
鄂尔多斯盆地盒8砂岩储层横向变化大,非均质性强,局部含水,含气砂岩的密度、速度和阻抗与泥岩相近,因此用常规储层预测方法区分含气砂岩与泥岩、含气砂岩与含水砂岩难度较大。通过测井曲线重构,建立了盒8地层岩石物理参数及其地震响应模型。结果表明,含水饱和度模型能够区分含气砂岩和含水砂岩;泥质含量模型能够分辨砂岩和泥岩;孔隙度模型能够分辨致密砂岩和孔隙砂岩。孔隙度合成道集和全叠加地震响应明显,高孔隙度砂岩表现为强振幅特征。所建立的岩石物理参数模型可直接用于高孔隙度含气砂岩的识别,确定的模型参数可直接用于实际资料处理,对提高有效储层的识别精度和可靠性具有指导意义。
He 8 sandstone reservoir in Ordos Basin is characterized by quick lateral variations,strong heterogeneity and containing water in part.The gas-bearing sand is close to shale in density,velocity and impedance.The results show that it is difficult to divide gas-bearing sand from shale,and gas from wet sand using general reservoir forecasting methods.The petrophysical parameters and seismic response models of He 8 formation were created by rebuilding the well logs.The results show that it is distinguishable between gas and wet sand from the saturation model,sand and shale from the shale content model,tight and porous sand from the porosity model.The seismic response to porosity synthetic gathers and full stack is evident,and high porosity sand presents strong amplitude.It can be used to identify high porosity gas charged sands from the petrophysical parameter models.The model parameters can be applied in actual seismic inversion directly,and it will provide instruction to improve accuracy and reliability for effective reservoir prediction.
He 8 sandstone reservoir in Ordos Basin is characterized by quick lateral variations,strong heterogeneity and containing water in part.The gas-bearing sand is close to shale in density,velocity and impedance.The results show that it is difficult to divide gas-bearing sand from shale,and gas from wet sand using general reservoir forecasting methods.The petrophysical parameters and seismic response models of He 8 formation were created by rebuilding the well logs.The results show that it is distinguishable between gas and wet sand from the saturation model,sand and shale from the shale content model,tight and porous sand from the porosity model.The seismic response to porosity synthetic gathers and full stack is evident,and high porosity sand presents strong amplitude.It can be used to identify high porosity gas charged sands from the petrophysical parameter models.The model parameters can be applied in actual seismic inversion directly,and it will provide instruction to improve accuracy and reliability for effective reservoir prediction.
引文
[1]朱家俊,王永诗,石砥石,等.胜利油田沾车地区馆陶组地层速度特征[J].石油大学学报:自然科学版,2003,27(3):33-35.ZHU Jia-jun,WANG Yong-shi,SHI Di-shi,et al.For-mation velocity characteristics of Guantao Group inZhanche aera of Shengli Oilfield[J].Journal of the Uni-versity of Petroleum,China(Edition of Natural Science),2003,27(3):33-35.
[2]孙振涛,孟宪军,慎国强,等.高精度合成地震记录制作技术研究[J].石油地球物理勘探,2002,37(6):640-643.SUN Zhen-tao,MENG Xian-jun,SHEN Guo-qiang,etal.The technology of making high-precision syntheticseismogram[J].Oil Geophysical Prospecting,2002,37(6):640-643.
[3]张明振.波阻抗反演技术在孤东地区馆陶组薄储层描述中的应用[J].石油大学学报:自然科学版,2003,27(6):22-24.ZHANG Ming-zhen.Application of wave impedance in-version technique to description of thin reservoir in Guan-tao Group[J].Journal of the University of Petroleum,China(Edition of Natural Science),2003,27(6):22-24.
[4]鲜本忠,姜在兴,杨林海,等.测井约束反演在泌阳凹陷下切谷储层预测中的应用[J].石油大学学报:自然科学版,2003,27(5):8-11.XIAN Ben-zhong,JIANG Zai-xing,YANG Lin-hai,etal.Reservoir prediction of incised valley in Biyang De-pression with logging constrained seismic conversionmethod[J].Journal of the University of Petroleum,Chi-na(Edition of Natural Science),2003,27(5):8-11.
[5]宋建国.基于地震地质模型的高分辨率处理方法[J].石油大学学报:自然科学版,2002,26(3):30-33.SONG Jian-guo.High-resolution method for treatment ofseismic data based on seismic-geologic model[J].Journalof the University of Petroleum,China(Edition of NaturalScience),2002,26(3):30-33.
[6]葛洪魁,陈,林英松.岩石动态与静态弹性参数差别的微观机理[J].石油大学学报:自然科学版,2001,25(4):34-36.GE Hong-kui,CHEN Yong,LIN Ying-song.Micro-scopic mechanism of difference between static and dynam-ic elastic prameters of rock[J].Journal of the Universityof Petroleum,China(Edition of Natural Science),2001,25(4):34-36.
[7][美]R E谢里夫,[加]L P吉尔达特.勘探地震学[M].北京:石油工业出版社,1999:40-47.
[8]殷八斤,曾灏,杨在岩.AVO技术的理论与实践[M].北京:石油工业出版社,1995:15-23.
[2]孙振涛,孟宪军,慎国强,等.高精度合成地震记录制作技术研究[J].石油地球物理勘探,2002,37(6):640-643.SUN Zhen-tao,MENG Xian-jun,SHEN Guo-qiang,etal.The technology of making high-precision syntheticseismogram[J].Oil Geophysical Prospecting,2002,37(6):640-643.
[3]张明振.波阻抗反演技术在孤东地区馆陶组薄储层描述中的应用[J].石油大学学报:自然科学版,2003,27(6):22-24.ZHANG Ming-zhen.Application of wave impedance in-version technique to description of thin reservoir in Guan-tao Group[J].Journal of the University of Petroleum,China(Edition of Natural Science),2003,27(6):22-24.
[4]鲜本忠,姜在兴,杨林海,等.测井约束反演在泌阳凹陷下切谷储层预测中的应用[J].石油大学学报:自然科学版,2003,27(5):8-11.XIAN Ben-zhong,JIANG Zai-xing,YANG Lin-hai,etal.Reservoir prediction of incised valley in Biyang De-pression with logging constrained seismic conversionmethod[J].Journal of the University of Petroleum,Chi-na(Edition of Natural Science),2003,27(5):8-11.
[5]宋建国.基于地震地质模型的高分辨率处理方法[J].石油大学学报:自然科学版,2002,26(3):30-33.SONG Jian-guo.High-resolution method for treatment ofseismic data based on seismic-geologic model[J].Journalof the University of Petroleum,China(Edition of NaturalScience),2002,26(3):30-33.
[6]葛洪魁,陈,林英松.岩石动态与静态弹性参数差别的微观机理[J].石油大学学报:自然科学版,2001,25(4):34-36.GE Hong-kui,CHEN Yong,LIN Ying-song.Micro-scopic mechanism of difference between static and dynam-ic elastic prameters of rock[J].Journal of the Universityof Petroleum,China(Edition of Natural Science),2001,25(4):34-36.
[7][美]R E谢里夫,[加]L P吉尔达特.勘探地震学[M].北京:石油工业出版社,1999:40-47.
[8]殷八斤,曾灏,杨在岩.AVO技术的理论与实践[M].北京:石油工业出版社,1995:15-23.
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