双重网格井间地震层析成像技术
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摘要
提出了一种不同于常规的井间地震层析成像技术,即在较细的网格上进行射线追踪,以提高射线路径和旅行时的计算精度,在较粗的网格上进行层析反演成像,使网格像素上射线覆盖的最低次数达到一定要求,以提高成像质量。分析了采用这种双重网格地震层析成像技术的必要性,模型实验证实了此技术实用性和有效性。
This paper presents a kind of cross-hole seismic tomography technique different from the traditional ones.That method traces the ray path and calculate the first arrival between each source and every receiver on the fine grid to improve the computing precision,and then,applies the inversion algorithms on the coarse grid in order to guarantee every image element having enough rays passed through to improve imaging effect.The model tests show that this double grid cross-hole seismic tomography strategy is necessary and efficient,and the image results demonstrate that the method is superior to the conventional ones.
This paper presents a kind of cross-hole seismic tomography technique different from the traditional ones.That method traces the ray path and calculate the first arrival between each source and every receiver on the fine grid to improve the computing precision,and then,applies the inversion algorithms on the coarse grid in order to guarantee every image element having enough rays passed through to improve imaging effect.The model tests show that this double grid cross-hole seismic tomography strategy is necessary and efficient,and the image results demonstrate that the method is superior to the conventional ones.
引文
[1]李庆忠,王建花.井间地震勘探误区及出路[J].石油地球物理勘探,2004,39(1):1 11.
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[4]裴正林,牟永光,狄帮让,等.复杂介质小波多尺度井间地震层析成像方法研究[J].地球物理学报,2003,46(1):113 117.
[5]严又生,宜明理,魏新,等.井间地震测量数据的反射波成像及解释[J].石油地球物理勘探,2000,35(1):26 41.
[6]谢海兵,马在田,王燕琨.一种新程函方程差分法层析成像[J].石油地球物理勘探,1997,32(5):623 627.
[7]宿淑春,王守东,吴律.井间层析成像的平滑SIRT算法[J].石油大学学报:自然科学版,2001,25(6):29 31.
[8]赵连锋,朱介寿,曹俊兴.并行化交错网格法地震层析成像[J].石油物探,2003,42(1):6 8.
[9]杨正华,朱光明.井地联合地震勘探在陕北油田开发中的应用[J].地球科学与环境学报,2004,26(1):65 68.
[2]吴律.层析基础及其在井间地震中的应用[M].北京:石油工业出版社,1997.
[3]Asakawa Eiichi,Kawanaka Taku.Seismic ray tracing usinglinear traveltime interpolation[J].Geophysical Prospecting,1993,41(1):99 112.
[4]裴正林,牟永光,狄帮让,等.复杂介质小波多尺度井间地震层析成像方法研究[J].地球物理学报,2003,46(1):113 117.
[5]严又生,宜明理,魏新,等.井间地震测量数据的反射波成像及解释[J].石油地球物理勘探,2000,35(1):26 41.
[6]谢海兵,马在田,王燕琨.一种新程函方程差分法层析成像[J].石油地球物理勘探,1997,32(5):623 627.
[7]宿淑春,王守东,吴律.井间层析成像的平滑SIRT算法[J].石油大学学报:自然科学版,2001,25(6):29 31.
[8]赵连锋,朱介寿,曹俊兴.并行化交错网格法地震层析成像[J].石油物探,2003,42(1):6 8.
[9]杨正华,朱光明.井地联合地震勘探在陕北油田开发中的应用[J].地球科学与环境学报,2004,26(1):65 68.
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