印度尼西亚NEB气田Lumut段砂体高分辨率层序等时对比分析

HIGH-RESOLUTION SEQUENCE-STRATIGRAPHIC CHARACTERISTICS AND RESERVOIR DISTRIBUTION OF THE LUMUT MEMBER IN NEB GAS FIELD,INDONESIA

利用高分辨率层序地层学理论和技术方法,综合测井小波、地震和岩芯资料对南苏门答腊盆地Jabung区块NEB气田Lower Talang Akar组Lumut段地层进行高分辨率层序地层学分析,从中识别出短期、中期、长期3个级别的基准面旋回层序,依据等时地层对比法则并利用地震资料约束进行不同级次基准面旋回层序的联井对比,建立了Lumut段等时地层格架,在等时地层格架内进行了单砂体的对比,并分析储层时空展布规律。

On the basis of integrated well wavelet and seismic data, combined with high-resolution se- quence-stratigraphic analysis, the sedimentary system of lower Talang Akar Formation in NEB Gas Field of Jabung Block in the South Sumatra Basin, was divided into short-term, middle-term and long-term baselevel cycles. The base-level cycles of different orders are correlated between wells using the restriction of seismic interpretations and method of cycle isochrostratigraphy correlation. Isochronous stratigraphic frameworks are established and single sand-body is correlated within them. Finally, reservoir distribution and evolution are analyzed within the isochronous stratigraphic frameworks.