The researchers are puzzled geologically by Well Niu 9 well field much longer, although the data had been processed for many times the distribution of reservoirs were not defined exactly.

• 牛9井区在地质上是一个长期困扰研究人员的地方,虽经过了多次常规地震资料处理,其储层分布问题一直未能得到很好地解决。