【摘要】 运用高分辨率层序地层学的基准面旋回原理,以钻井、测井资料的综合研究为基础,并结合陆相湖盆层序地层特征和地震剖面资料,分析了渭北油田渭北2井区长3段不同级次基准面旋回层序界面特征及识别标志,将渭北油田长3油层划分为5个短期基准面旋回,建立起该区长3油层高分辨率层序地层格架。通过运用相控—准层序组小层等时对比新技术极大提高了超前注水实验区的单层砂体对应性,超前注水开发效果显著,为输导体系研究奠定了基础。更多还原

【Abstract】 By base-level cycle principle of high-resolution sequence stratigraphy, based on the comprehensive study of drilling and logging data, and combined with the sequence stratigraphic characteristics and the seismic profile data of continental lake basin, the sequence boundary characteristics and identification marks under different class of base-level cycle of Chang-3 formation in 2ndwell block of Weibei oilfield were analyzed to divide the oil layer into five short-term base-level cycles and establish the stratigraphic framework of high-resolution sequence. The new phase control-sequence group thin layer isochronous contrast technology greatly improved the single sand body correspondence of the advanced water injection test area and laid the foundation of the transport system.更多还原