利用拟声波曲线进行高分辨率地震反演
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摘要
由于地下情况的复杂性和地震原始资料的分辨率的影响 ,要得到一个令地质家和地球物理学家满意的结果还是相当困难 ,特别是井约束反演都要用到声波曲线 ,当声波曲线由于各方面的影响不能反映储层的真实情况时 ,反演的结果就会与实际情况相差很大 ,针对这种情况 ,提出了拟声波的方法来解决这个问题。介绍了测井约束波阻抗反演技术和拟声波技术的原理及方法。该反演方法是基于初始模型的反演方法 ,利用拟声波曲线代替声波曲线来建立初始模型 ,并进行波阻抗反演 ,可以大大提高反演结果对储层反映的精确度。该方法在实际的应用过程中得到了很好的效果
At present, the seismic inversion technology becomes most popular. Since the complex of the subsurface formation and the resolution of the data, it is very difficult to get a good result, especially for the well-log-constrained inversion, if the AC curve can not show the real situation of the formation, the inversion result will be (very) difference from the true formation. So we can solve this problem by using the simulated AC curve. This article introduces the method and principle of the technology of well-log-constrained inversion and simulated AC curve. This method is based on the preliminary model, using simulated AC curve instead of AC curve to do the inversion, and it can get very high resolution of inversion result. and this method has got very good result in application.
At present, the seismic inversion technology becomes most popular. Since the complex of the subsurface formation and the resolution of the data, it is very difficult to get a good result, especially for the well-log-constrained inversion, if the AC curve can not show the real situation of the formation, the inversion result will be (very) difference from the true formation. So we can solve this problem by using the simulated AC curve. This article introduces the method and principle of the technology of well-log-constrained inversion and simulated AC curve. This method is based on the preliminary model, using simulated AC curve instead of AC curve to do the inversion, and it can get very high resolution of inversion result. and this method has got very good result in application.
引文
[1] 马在田.三维地震勘探方法[M ].北京:石油工业出版社,1989.
[2] 刘光鼎编.海洋地球物理勘探[M ].北京:地质出版社,1978.
[3] 傅淑芳,朱仁益.地球物理反演问题[M].北京:石油工业出版社,1998.
[4] 杨文彩.地球物理反演的理论与方法[M ].北京:石油工业出版社,1997.
[5] BehrensRA ,MacleodMK ,TranTT ,etal.Incorpo ratingseismicattributemapsin3Dreservoirmodels[C].SPEReservoirEvaluation&Engineering,1991.
[6] Nur,A .Seismicandacousticvelocitiesinreservoirrocks,Vol.2,Theoreticalandmodelstudies[C].Soc.Expl.GeophysReprintSeries,1992.457.
[2] 刘光鼎编.海洋地球物理勘探[M ].北京:地质出版社,1978.
[3] 傅淑芳,朱仁益.地球物理反演问题[M].北京:石油工业出版社,1998.
[4] 杨文彩.地球物理反演的理论与方法[M ].北京:石油工业出版社,1997.
[5] BehrensRA ,MacleodMK ,TranTT ,etal.Incorpo ratingseismicattributemapsin3Dreservoirmodels[C].SPEReservoirEvaluation&Engineering,1991.
[6] Nur,A .Seismicandacousticvelocitiesinreservoirrocks,Vol.2,Theoreticalandmodelstudies[C].Soc.Expl.GeophysReprintSeries,1992.457.
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