摘要
含油单砂体形态及分布特征的预测是精细油藏描述的主要内容。根据渤海湾盆地G油田地质特征、地震资料品质及研究目的,选择稀疏脉冲地震反演方法,以泥质含量为地震反演目标,将地震反演技术与三维地质建模技术相结合,利用协克里金方法将测井解释结果与地震反演参数有机地融合到一起,建立高精度的三维泥质含量模型。三维地质模型所反映出的单砂体形态完全达到了油藏精细描述的要求,同时又很好地保持了原始地震属性参数的分布特征,使砂体预测的分辨率得到明显提高。在泥质含量模型的基础上划分砂体,利用三维可视化技术对含油单砂体进行三维追踪和解释,得到含油单砂体及油藏的三维空间展布形态和分布特征,使油藏预测更为准确、可靠。
The prediction of geometry and distribution for oil-bearing single sandbody is an important subject in fine reservoir characterization. According to the geologic feature, quality of seismic data and the study purposes of G Oilfield in Bohai Bay Basin, seismic inversion of shale volume was processed using sparse spike method, the processing result of seismic inversion was integrated into the 3D geologic modeling through combining it with the petrophysical study by Cokriging, and a 3D geologic model of shale volume with high resolution was established and met the requirement of fine reservoir characterization. The sand bodies were extracted based on the 3D shale volume model and the oil-bearing single sandbodies were tracked and interpreted by 3D visualization technology, and the 3D geometry and distribution of oil-bearing sand bodies and netpay zone were clearly obtained. It leads to the reservoir prediction with higher accuracy and reliability.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2009年第5期623-627,共5页
Petroleum Exploration and Development
关键词
地震反演
三维地质建模
协克里金
含油单砂体
seismic inversion
3D geologic modeling
Co-kriging
oil-bearing single sandbody
