摘要
在分析羌塘盆地形成的地球动力学背景、地层及沉积演化特征的基础上 ,探讨了该盆地油气成藏条件 ,认为羌塘盆地勘探的主力层段三叠—侏罗系总体经历了三次海侵和三次海退的过程 ,生油岩厚度大 ,有机质丰度高 ,且处于成熟—高成熟阶段 ,储集岩和区域盖层发育 ,生储盖组合条件好 ,目前已发现的多处油气苗表明 ,羌塘盆地确实有过油气的生成与运移的过程 。
Based on analyzing geodynamic background, strata and depositional evolution feature, oilgas reservoir forming conditions are discussed. It is agreed that TriassicJurassic as major exploration objective formation in Qiangtang Basin underwent three times marine invasions and marine regressions, with thick source rocks and high abundance of organic matter at maturehighly mature stage, and with well developed reservoir rock and regional cap formation. The sourcereservoircap assemblage conditions are well developed. At present, oilgas seepages discovered at various positions shows that oilgas generation and migration process existed indeed in the Qiangtang Basin, which possesses geological conditions forming largescale oilgas field by comprehensive analysis.
出处
《油气地质与采收率》
CAS
CSCD
2004年第3期28-30,共3页
Petroleum Geology and Recovery Efficiency
