【摘要】 针对埕岛油田东斜坡地区东营组目的层段砂岩储层较薄,砂、泥速度差异较小,三维地震资料品质较差,储层描述难度大等问题,从小波分频处理基本原理出发,阐述了小波分频处理技术对提高地震资料分辨率的可行性,探索应用了该技术提高地震资料分辨率、以测井资料为约束地震反演储层描述新技术,对东斜坡东营组储层分布空间和展布规律进行了反演、预测和描述。应用结果表明:通过对三维地震资料的小波分频特殊处理,地震资料主频有所提高,频带得到了进一步拓宽,资料品质得到明显改善,识别薄储层能力得到加强;在此基础上,通过测井约束反演,充分发挥了井、震各自优势,精细刻画了储层的展布特征,落实了储量规模,有效解决了储层预测的困难,为下步勘探开发部署提供了可靠的依据。更多还原

【Abstract】 The target sandstone layers of Dongying Formation in eastern slope area of Chengdao Oilfield can not be distinguished because the thickness of sandstone reservoir is thin,the velocity difference between sands and mudstone is small,the quality of seismic data is poor and the difficulty of reservoir description is great.From the basic principle of wavelet frequency division processing,the feasibility of technique for improving the resolution of seismic data is elaborated.The reservoir distribution space and law of Dongying Formation in eastern slope area are inverted,described and predicted by the wavelet frequency division processing and logging constrained inversion.The application results show that the main frequency is increased,the band of frequency is further widened,the quality of seismic data is obviously improved and the identification of thin layer is strengthened by the wavelet frequency division processing.On this basis,the features of reservoir distribution and reserves scale are delineated with logging constrained inversion technique.Furthermore,the difficulties of reservoir prediction are effectively solved,which can provide a reliable basis for further exploration and development of Dongying Formation in eastern slope area.更多还原