断裂系统解释与储层预测中的三维相干技术
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摘要
三维相干技术是根据三维地震数据体中相邻地震道之间地震信号的相似性来判断地层、岩性的横向非均匀性,它具有下列特点:1)从工区构造体系特征出发,自动检测断裂系统,避免了常规构造解释对解释人员经验的依赖性,使得解释结果更客观、真实;2)相干道数、时窗大小以及时延参数的选择对三维相干技术的处理效果起着至关重要的作用;3)应用三维相干技术不仅可以自动检测断裂系统,而且可以描述储层的横向非均匀性,确定特殊地质异常体的边界,如:岩溶地貌特征、河道砂、砂坝等;4)充分发挥了计算机运算速度快的特点,提高了解释效率,缩短了勘探周期。
3D coherence technique can be used to determine the horizontal heterogeneity of strata and lithology by capturing the signal coherency of adjacent seismic channels among the data volume of 3D seismics.The technique has the following features: ① it is based on tectonic characteristics of acquisition areas and can automatically detect the fault systems,thus yielding more objective interpretations by avoiding the dependence on workers' experiences of conventional structural interpretation;② numbers of coherent track,size of time window,and selection of delay parameters,are of vital importance for the interpretation quality of the technique;③ it can be used in the description of horizontal heterogeneity of reservoirs and determination of the boundary of special geologic anomalous bodies,such as karst topography,channel sand,sand bank,and etc.;④ by utilizing the rapid processing speed of computers,it enhances the interpretation efficiency and reduces the exploration cycle.
3D coherence technique can be used to determine the horizontal heterogeneity of strata and lithology by capturing the signal coherency of adjacent seismic channels among the data volume of 3D seismics.The technique has the following features: ① it is based on tectonic characteristics of acquisition areas and can automatically detect the fault systems,thus yielding more objective interpretations by avoiding the dependence on workers' experiences of conventional structural interpretation;② numbers of coherent track,size of time window,and selection of delay parameters,are of vital importance for the interpretation quality of the technique;③ it can be used in the description of horizontal heterogeneity of reservoirs and determination of the boundary of special geologic anomalous bodies,such as karst topography,channel sand,sand bank,and etc.;④ by utilizing the rapid processing speed of computers,it enhances the interpretation efficiency and reduces the exploration cycle.
引文
1佘德平,曹辉,郭全仕.应用三维相干技术进行精细解释[J].石油物探,2000,39(2):83～88
2佘德平,曹辉,王咸彬.相干体技术及其在地震解释中的应用[J].石油物探,1998,37(4):75～79
3 Marfurt K J,Kirlin R,Farmer S L,et al.3D seismic attributesusing a semblance-based coherency algorithm[J].Geophysics,1998,63(4):1 150-1 165
4朱成宏,黄国骞,秦瞳.断裂系统精细分析技术[J].石油物探,2002,41(1):42～48
5 Gerztenkorn A,Marfurt K J.Eigenstructure-based coherence com-putations as an aid to 3-D structural and stratigraphic mapping[J].Geophysics,1999,64(5):1 468-1 479
6 Chopra S,Pichford S.Intergrating coherence cube imaging andseismic inversion[J].The Leading Edge,2001,20(4):354-362
7张军华,王永刚,赵勇,等.相干体技术算法改进及其在TJH地区的应用[J].物探与化探,2002,26(1):50～52
8 Trappe H,Hallmich G,Foell M.Potential power in the applicationof seismic volume attributes[J].First Break,2000,18(9):397-
4029孙义梅,杨春峰,陈程,等.相干技术的参数选取及其效果分析[J].石油地球物理勘探,2001,36(5):640～645
10郑冰,承秋泉,高仁祥.塔里木盆地东北部奥陶-志留系沉积成岩作用[J].石油与天然气地质,2006,27(1):85～92
11于建国,姜秀清.地震属性优化在储层预测中的应用[J].石油与天然气地质,2003,24(3):291～295
2佘德平,曹辉,王咸彬.相干体技术及其在地震解释中的应用[J].石油物探,1998,37(4):75～79
3 Marfurt K J,Kirlin R,Farmer S L,et al.3D seismic attributesusing a semblance-based coherency algorithm[J].Geophysics,1998,63(4):1 150-1 165
4朱成宏,黄国骞,秦瞳.断裂系统精细分析技术[J].石油物探,2002,41(1):42～48
5 Gerztenkorn A,Marfurt K J.Eigenstructure-based coherence com-putations as an aid to 3-D structural and stratigraphic mapping[J].Geophysics,1999,64(5):1 468-1 479
6 Chopra S,Pichford S.Intergrating coherence cube imaging andseismic inversion[J].The Leading Edge,2001,20(4):354-362
7张军华,王永刚,赵勇,等.相干体技术算法改进及其在TJH地区的应用[J].物探与化探,2002,26(1):50～52
8 Trappe H,Hallmich G,Foell M.Potential power in the applicationof seismic volume attributes[J].First Break,2000,18(9):397-
4029孙义梅,杨春峰,陈程,等.相干技术的参数选取及其效果分析[J].石油地球物理勘探,2001,36(5):640～645
10郑冰,承秋泉,高仁祥.塔里木盆地东北部奥陶-志留系沉积成岩作用[J].石油与天然气地质,2006,27(1):85～92
11于建国,姜秀清.地震属性优化在储层预测中的应用[J].石油与天然气地质,2003,24(3):291～295
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