塔河油田于奇东地震资料叠后去噪方法研究

De-noising methods to study for post-stack seismic data of Yuqidong in Tahe oilfield

通过塔河油田于奇东地区地震资料噪音特征分析,开展针对叠后地震资料的三种噪音去除方法原理分析,并应用实际数据体开展了方法测试。利用三种去噪方法形成的地震数据,进行了剖面特征和平面属性效果对比,明确了各种去噪方法的地震资料噪音压制能力和对资料保幅性、储层目标、断裂等因素的影响。指出道混波技术作为于奇东叠后去噪的主要应用方法,为于奇东奥陶系储层预测提供了有效资料基础。同时,经过在地震资料重新采集区实验对比,道混波叠后去噪地震资料较为可靠,能够作为区带评价中储层预测和断裂解释的可靠资料基础。

Based on the analysis of noise characteristics of seismic data in Yuqidong area of Tahe oilfield,The principle for three kinds of de-noise methods for post-stack seismic data was analyzed,and the methods was tested with the actual seismic data of Yuqidong area.Through the comparison of profile features and plane attributes,I know the capability of the methods to remove noise for post-stack seismic data and the influence of the method to seismic data on amplitude protection,reflection of reservoir,reflection of fault.The Trace-Mix is an effective method to remove noise,And it provide the credible seismic data for the reservoir prediction of ordovician.At the same time,through the comparison of the experiment in the area of 3dseismic acquisition anew,The Trace-Mix can provide reliable seismic data for the reservoir prediction and fault interpretation in play assessment.