基于相似背景的储层预测方法及效果
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摘要
汪恩华 ,万忠宏 .基于相似背景的储层预测方法及效果 .石油地球物理勘探 ,2 0 0 2 ,37(1) :85～ 89利用地震信息作储层预测在国内、外发展很快。然而 ,陆相沉积 (尤其是河流相沉积 )地层条件下 ,直接利用地震资料进行中、深部薄 (互 )储层预测的效果并不令人满意。为了对薄 (互 )地层的空间展布、结构特征及相互间组合关系进行检测和研究 ,本文提出了基于相似背景的储层预测方法。该方法的关键点是无须知道层间子波、上覆层效应等因素 ,也能将与地层无关的影响因素基本消除 ,只保留与地层固有特性相关的信息。理论记录及实际资料的初步测试结果表明 ,该方法的效果较好
Reservoir prediction by seismic attribution developed rapidly at home and abroad. However, the effects of predicting thin and interbedded reservoir in middle and deep area are not satisfied by directly using seismic data in a condition of continental depositional formation (especially fluvial deposit). Aimed at detecting and studying the space distribution, structural character of formations and the combinatorial relation between them, the paper presented a predicting method for reservoir based on similar background. The key points of the method are that the factors having no relation with formation also can be basically removed and the information related to intrinsic character of formation itself is remained without knowing of those factors such as interlayer wavelet, overburden effects, etc. The theoretical records and real data tests show that the effects of the method are good.
Reservoir prediction by seismic attribution developed rapidly at home and abroad. However, the effects of predicting thin and interbedded reservoir in middle and deep area are not satisfied by directly using seismic data in a condition of continental depositional formation (especially fluvial deposit). Aimed at detecting and studying the space distribution, structural character of formations and the combinatorial relation between them, the paper presented a predicting method for reservoir based on similar background. The key points of the method are that the factors having no relation with formation also can be basically removed and the information related to intrinsic character of formation itself is remained without knowing of those factors such as interlayer wavelet, overburden effects, etc. The theoretical records and real data tests show that the effects of the method are good.
引文
[1] 贺振华.复杂油气藏地震波场特征方法理论及应用,四川科技出版社,1999
[2] 李庆忠.陆相地震地层学若干问题.石油地球物理勘探,1987,22(5):489～511
[3] 李庆忠.陆相地震地层学若干问题(续).石油地球物理勘探,1987,22(6):619～635
[4] 黄小平.储层预测的新思想.西部地区第九次石油物探技术研讨会汇编,1999
[5] 汪恩华.适用于层状介质AVO分析的反射系数谱公式及模型计算.石油地球物理勘探,1991,25(2):809～817
[6] PartykaG et al.Interpretational applications ofspectral decom position in reservoir characterization.TheL eadingEdge,1999,18(5):353～360
[2] 李庆忠.陆相地震地层学若干问题.石油地球物理勘探,1987,22(5):489～511
[3] 李庆忠.陆相地震地层学若干问题(续).石油地球物理勘探,1987,22(6):619～635
[4] 黄小平.储层预测的新思想.西部地区第九次石油物探技术研讨会汇编,1999
[5] 汪恩华.适用于层状介质AVO分析的反射系数谱公式及模型计算.石油地球物理勘探,1991,25(2):809～817
[6] PartykaG et al.Interpretational applications ofspectral decom position in reservoir characterization.TheL eadingEdge,1999,18(5):353～360
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