地震属性分析在轮南地区储层预测中的应用

Application of seismic attribute analysis in Lunnan reservoir predication

轮南地区油气资源非常丰富,但油气分布规律十分复杂,利用地震属性分析能较好地进行储层和油气分布预测。在层位精细标定和构造精细解释的基础上,通过对轮南地区奥陶系地震属性的提取和筛选,结合实际钻测井资料,确定了轮南地区最能反映地层含油气变化特征及储层变化特征的地震属性为振幅类信息。通过轮南三维区块一间房组振幅属性资料分析证实,该方法可以较好地预测出主要岩溶型储层的分布范围,为勘探目标区的确定提供重要依据。

Oil and gas resources are very rich in Lunnan area but the distribution is complicated.Seismic attribute analysis helps to predict reservoir and oil/gas distribution.The seismic attributes which best reflect oil-bearing and reservoir characteristics are determined for Lunnan area as amplitude information based on meticulous horizon demarcation and structure interpretation through picking and screening the seismic attributes of Ordovician formation in conjunction with drilling and logging data.Analysis of the 3D amplitude attribute data of Yijianfang formation in Lunnan block has proved that this method can predict the distribution of major karst reservoirs and provide valuable basis for confirming exploration target.