地震多属性综合分析的应用研究
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摘要
由于地震属性与储层特征对应关系复杂,利用地震单一属性进行储层预测往往存在多解性。然而随着地震属性研究的深入,地震属性的数量和分类也更为细化,因此地震多属性的优化组合与综合分析成为必然。为此总结了多属性综合分析的技术流程并将其应用于实际数据分析。其主要步骤为：①不同种类的属性提取和分析；②属性的预处理,即剔除异常值并进行滤波等处理；③结合钻井、采油资料寻找和筛选敏感属性；④利用K- L变换来对优选出的地震属性进行降维处理；⑤利用线性、非线性等综合分析技术进行储层预测。将该分析技术应用于CN工区某一储层的含油气性预测中,然后利用波阻抗反演结果对研究成果进行相互验证,发现综合分析结果有效地减少了预测目标的多解性,取得了较为理想的预测效果。
Because the relationship between seismic attributes and reser- voir characteristics is complex,the reservoir prediction using single seismic attribute often has multi-solutions.With the research going on,the classification of seismic attributes is more detailedly divid- ed,making the optimum combination and synthetic analysis of seis- mic multi-attribute become necessary.Therefore,the technical workflows of multi-attribute synthetic analysis are summarized and applied to the actual data.The main steps are①extracting and an- alyzing different types of attributes,②preprocessing the extracted attributes,rejecting attribute anomalous values and filtering,③seeking and selecting the sensitive attributes combined with drilling and oil extraction data,④descending the optimal seismic attrib- utes through K-L changes,and using the synthetic analysis tech- nology with linearity and nonlinearity on reservoir prediction.In the process of applying this technology in one reservoir in the CN work area to forecast the oiliness,the results of this research and the results of acoustic impedance inversion have been reciprocally verified,showing that the multi-solution problem is well resolved.
Because the relationship between seismic attributes and reser- voir characteristics is complex,the reservoir prediction using single seismic attribute often has multi-solutions.With the research going on,the classification of seismic attributes is more detailedly divid- ed,making the optimum combination and synthetic analysis of seis- mic multi-attribute become necessary.Therefore,the technical workflows of multi-attribute synthetic analysis are summarized and applied to the actual data.The main steps are①extracting and an- alyzing different types of attributes,②preprocessing the extracted attributes,rejecting attribute anomalous values and filtering,③seeking and selecting the sensitive attributes combined with drilling and oil extraction data,④descending the optimal seismic attrib- utes through K-L changes,and using the synthetic analysis tech- nology with linearity and nonlinearity on reservoir prediction.In the process of applying this technology in one reservoir in the CN work area to forecast the oiliness,the results of this research and the results of acoustic impedance inversion have been reciprocally verified,showing that the multi-solution problem is well resolved.
引文
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2王咸彬，顾石庆．地震属性的应用与认识[J]．石油物探，2004，43(增刊)：25～27
3杨勤勇，徐丽萍．地震勘探技术新进展[J]．勘探地球物理进展，2002，25(1)：5～10
4曹辉．地震属性应用几个关键问题探讨[J]．石油物探，2004，43(增刊)：1～3
5 Taner MT.Seismic attributes[EB/OL].http://www.cseg.ca/recorder/pdf/200109sep/06_sep2001.pdf
6 Brown A R.Seismic attributes and their classification[J].The leading edge,1996,15(10):1090
7丁峰．地震属性分析系统的研制与应用研究[学位论文][D]．四州成都：西南石油大学硕士论文，2004
8胡建．地震波属性可靠性研究[学位论文][D]．黑龙江大庆：大庆石油学院硕士论文，2004
9鲍祥生，尹成，赵伟等．储层预测的地震属性优选技术研究[J]．石油物探，2006，45(1)：28～33
10印兴耀．周静毅．地震属性优化方法综述[J]．石油地球物理勘探，2005，40(4)：482～489
11唐湘蓉．地震测井联合反演方法研究及应用[学位论文][D]．四川成都：成都理工大学硕士论文，2005
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