地震多属性加权融合显示技术在宣汉—达县地区的应用

Application of multi-seismic attribute syncretized technique with weighted algorithm in Xuanhan-Daxian area

地震属性分析是储层预测的有效手段之一。但由于受地震资料分辨率和信噪比的限制,用一种地震属性去研究地质问题往往容易产生偏差。对物理意义和地质意义明确的多种地震属性采用加权算法融合显示后,可大大降低多解性,提高储层预测的可信度。地震多属性加权融合显示技术在宣汉—达县地区的实际应用证实,该技术可以精细刻画飞仙关组储层边界线的范围,且预测结果符合地质宏观分布规律,与钻井结果吻合程度较高。

Seismic attribute analysis is one of the effective methods of reservoir prediction. But it can produce false images when using a single attribute to resolve geological problem because of the limitation in resolution and signal to noise ratio of seismic data. It can decrease the incertitude and improve the credibility in reservoir prediction after several seismic attributes with clear physical and geological significance were syncretized by weighted algorithm. Using this technique, the reservoir border was described finely in Feixianguan Formation in Xuanhan-Daxian area. The predicted results accorded with the macroscopical geological distribution rule and highly inosculated with actual drilling.