珠江口盆地东部HZ21-1气藏及其外围储集体一体化研究

An integrated study on HZ21-1 gas pool and its peripheral reservoir rocks in Pearl River Mouth basin

针对HZ21-1气藏K08和K22两套含气砂岩层段,应用以三维可视化为主的一体化技术,对HZ21-1气藏及其外围含气储集体进行了地球物理与地质相结合的综合研究,提出了可供滚动勘探开发的现实目标和远景目标。研究表明:HZ21-1气藏气柱高度不仅受构造控制,而且受岩性控制;在HZ21-1构造主体东南侧,K22层的2个条带状砂体含气特征明显,是滚动勘探的现实目标;在研究区东南角及西南角,K08层和K22层都有较明显的振幅异常,是有潜力的远景目标。

Focusing on K08 and K22 intervals of gas-hearing sandstone in HZ21-1 gas pool, a comprehensive study was conducted for the pool and its peripheral reservoir rocks, which was characterized by a combination of geophysics with geology and an application of integrated techniques dominated by 3D visualization （VoxGeo）, resulting in the presentation of current and prospective targets for gas exploration and development. The study has indicated that the gas column in HZ21-1 pool is controlled not only by structure, but also by lithology. On the southeast side of HZ21-1 structure, two banded sandstones in K22 interval are significant in gas-bearing features and can become current targets for progressive exploration and development. In the southeast and southwest corners of the study area, both K08 and K22 intervals are obvious in seismic amplitude anomaly, and may be prospective targets for future exploration.