地震属性分析在官渡储层预测中的应用

Application of seismic attribute analysis in reservoir prediction in Guandu

地震属性分析技术是储层预测中最有效的手段之一,对于提高钻井成功率和油气勘探开发具有重要意义。通过地震波多属性分析技术可对官渡下沙溪庙组进行储层研究,分析有利储集层的展布特征。主要属性分析方法包括地震波瞬时属性计算、品质因子提取和裂缝检测中的差分技术。应用这些属性分析方法原理提取地震波属性参数,通过参数的二维剖面标定和三维沿层平面的切片显示,分析和描述了川东南官渡下沙溪庙组砂体的展布特征,对潜在的有利储集区块进行了预测和评价。

The seismic attribute analysis is one of the most effective means in the reservoir prediction, which has very important significance for improving the success rate of well drilling and oil and gas exploration and development. The reservoirs of the Lower Shaximiao Formation in Guandu could be studied by the seismic multiattribute analysis and find out the distribution of favorable reservoirs. The main attribute analysis methods include seismic wave instantaneous attributes calculation, quality factor extraction and the differential technique in crack detection. The attribute parameters of seismic wave are extracted by these attribute analysis, the distribution characteristics of sand body of Lower Shaximiao Formation in Guandu in the southeast margin of Sichuan are described by the property parameters calibration of 2D profile and the slice display of the 3D layer along planar sections, and the favorable reservoir blocks are forecasted and evaluated.