【摘要】 莺歌海盆地具有明显的走滑拉张特征 ,是一个高温高压盆地。盆地中央凹陷带泥拱和热流体底辟非常发育 ,为天然气运移提供了良好的通道。DF1 - 1 - 1 1井的钻探结果说明 :莺歌海盆地中深层高温高压条件下可以成藏 ,储层的好坏与沉积环境和成岩作用强度有关 ,沉积相带以低位三角洲和低水位扇为主。中深层气层CO2 含量较低 ,天然气组成具有明显的多源多阶混源复合特征。从DF1 - 1 - 1 1井看 ,中深层气层在高保真地震剖面上表现为弱亮点反射 ,气层预测的难度比浅层大。更多还原

【Abstract】 Yinggehai basin is a high temperature and high pressure basin with distinctly striking slip extension.In the center depression strap of the basin,The mud diapir and hot fluids are grown that are good channels for nature gas migration. The DF1 1 11 drilling results show (1)hydrocarbon accumulation is ok when the mid depth stratum temperature and pressure are high in Yinggehai basin;(2)the stand or fall of reservoir is relate to sediment environment and diagenesis intensity;(3)the sediment phase straps are mostly lowstand delta and lowstand fan;(4)the content of CO 2 is few in the mid depth gas reservoir,and the characters of nature gas compose are multiple sources,multiple periods and mixed sources.(5)the seismic reflect amplitude is not very strong from the mid depth gas top interface,and forecasting mid depth gas reservoir is more difficult than shallow gas reservoir.更多还原