摘要
滩坝砂体空间分布非均质性较强、厚度薄,常规储层预测方法无法精细刻画其特征。针对该问题,采用主成分分析的地震相分析技术获取滩坝砂体空间展布变程、方向、规模等表征参数,将沉积模式和地震相引入地质统计学反演中进行变差函数的分析,在提高垂向分辨率的同时弱化随机反演井间结果的不确定性,最终实现对滩坝薄砂体的高精度定量预测。
As the beach bar sand body has strong heterogeneity and thin thickness,conventional reservoir prediction methods cannot accurately characterize its characteristics.Aiming at the problem,the seismic facies technology based on principal component analysis was used to obtain the parameters such as the space range,direction and scale of beach bar sand body.The sedimentary model and seismic facies are introduced into the analysis of variogram in geostatistical inversion.The research can improve the vertical resolution and weaken the uncertainty of the results between wells caused by stochastic inversion.Finally,the high-precision quantitative prediction of beach bar sand body is realized.
作者
王东坤
谢英刚
张军林
逄建东
葛岩
WANG Dongkun;XIE Yinggang;ZHANG Junlin;PANG Jiandong;GE Yan(Engineering Technology Company of CNOOC Energy Development Co.,Ltd.,Tianjin 300457,China)
出处
《石油地质与工程》
CAS
2022年第1期8-13,共6页
Petroleum Geology and Engineering
关键词
滩坝砂岩
地震相
地质统计学反演
地震相控反演
beach bar sand body
seismic facies
geostatistical inversion
seismic facies-controlled inversion