石油实验地质2011，Vol.33Issue(3)：255-259,5.
南海北部陆坡白云深水区浅层深水水道沉积
Shallow deepwater channels in Baiyun deepwater region of northern continental slope, South China Sea
摘要
Abstract
Based on shallow 3D seismic data with high resolution, shallow deepwater channels in the Baiyun deepwater region are studied so as to guide medium and deep explorations with lower seismic resolution. Large amounts of deepwater channels generate in the slope and the slope base of Baiyun Sag. The channels are classified into 3 types: erosional, erosional/aggradational and aggradational. The geometries of deepwater channels change along with gradient. On the upper slope, single deep feeding channel develops. On the gentle slope with restrictive environment, shallow and broad channels stack vertically. On the basin floor with unconfined environment, small channels spread laterally. In plane view, channel shapes may be straight or bended. The vertical changing characteristics of erosional/ aggradational channels in the Baiyun Sag are concluded as follows. Grain size decreases upwards. Mastering channels are found at the bottom and leveed channels are found at the top. The explorations of deepwater sandstones are complicated; hence it is necessary to find deepwater sandstones with big thickness and good communication.关键词
深水沉积/浅层/水道/白云凹陷/南海北部Key words
deepwater deposition/ shallow layer/ channel/ Baiyun Sag/ northern South China Sea分类
能源科技引用本文复制引用
刘军,庞雄,颜承志,柳保军,李元平,胡琏,郑金云..南海北部陆坡白云深水区浅层深水水道沉积[J].石油实验地质,2011,33(3):255-259,5.基金项目
国家科技重大专项(2008ZX05025-003,2008ZX05056-001,2008ZX05025-006-03,2008ZX05025-001-010)资助. （2008ZX05025-003,2008ZX05056-001,2008ZX05025-006-03,2008ZX05025-001-010）
