摘要
本文提出了油气运移输导体系的概念,并以琼东南盆地为例阐明了高温高压条件下油气运移的基本特征及成藏模式。强调高温高压条件及中低温常压条件下天然气运移输导体系明显不同,前者受压力场控制,以水溶相运移为主,低压脊是运移的主通道;后者受浮力控制,以气相运移为主,构造脊为主运移通道。
This paper comes up with the concept of oil and gasmigration conducting system. Taking Southeast HainanBasin as example, it explains the basic characters andreservoir formation pattern of oil and gas migration un-der high-temperature and high-pressure conditions. ItStresses that the natural gas migration conducting systemis obviously different at the high-temperature and high-pressure conditions and at the medium and low tem-perature and constant pressure. The former is controlledby pressure field. It migrated mainly in water solutionfacies and the low-pressure ridge is the main path formigration. The latter is controlled by floating power.Itmigrated mainly in gas facies and the structural ridge isthe path for migration.
关键词
运移输导体系
成藏模式
琼东南盆地
天然气运移
migration conducting system
water solution facies
pressure field
low-pressure ridge
pattern for reservoir generation.
