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.
出处
《石油物探》
EI
CSCD
2007年第1期42-47,共6页
Geophysical Prospecting For Petroleum
基金
国家"863"计划(2003AA602110-5)资助。
关键词
地震属性
属性预处理
敏感属性
属性优化
波阻抗反演
seismic attribute
attribute preprocessing
sensitive attribute
attribute optimization
acoustic impedance inversion
