基于优势振幅的储层预测方法研究及应用  

Research and Application of Reservoir Prediction Method Based on Dominant Seismic Amplitude

作　　者：李操[1] 

机构地区：[1]中石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《石油天然气学报》2014年第7期80-83,6,共4页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2008ZX05010-002)

摘　　要：地震振幅沿层切片可以反映储层的平面变化,是储层预测的重要手段之一。利用沿层振幅切片或地层切片可以定性预测河道边界等地质体的范围,但定量预测砂岩厚度的精度较低,特别是在井密度较大的开发区块往往难以建立地震振幅与砂岩厚度的定量关系。利用密井网开发区目的层储层数据准确、丰富的有利条件,研究了基于目标函数的地震优势振幅提取方法,提高了地震振幅与储层参数的相关性,奠定了地震属性储层定量预测的基础。该方法在大庆长垣油田BB2区块SⅢ4+5沉积单元(SⅢ为萨尔图油层Ⅲ油层组)储层预测中取得了较好的应用效果。The seismic amplitude slicing along the strata could reflect the plane variations of reservoirs,it was one of the important means of reservoir prediction.The seismic amplitude slicing along the strata and geologic slicing were used to predict the scope of geological bodies such as river channel boundary,but they were low accuracy for sandstone thickness prediction,it was usually difficult to establish quantitative relationship between seismic amplitude and the sandstone thickness in the dense well pattern blocks.By using the accurate reservoir data and the rich and beneficial conditions of the target zone in the dense well pattern,the seismic attribute extraction method based on objective function was presented,and correlation between the seismic amplitude and reservoir parameters was improved.The method is used for reservoir prediction of SⅢ4+5sedimentary unit in Block BB2 of Changyuan Oilfield in Daqing,and good application results are obtained.

关 键 词：储层预测 密井网 优势振幅 地震属性 长恒油田 

分 类 号：P631.4[天文地球—地质矿产勘探] P618.13[天文地球—地质学]