从近20年来东部剩余可采储量变化看老油区的潜力

View on the Potential in the Old Oil Regions in the Eastern China According to the Remnant Recoverable Reserves Change Within Recent 20 Years

20世纪70年代末期以来,东部剩余可采储量已经历了1977-1985年、1985-1998年两个变化周期。根据对它们的下降和上升阶段的变化及其原因的分析,以及不同时期的勘探效益的比较,从而指出了对东部老油区应持两点论,既看到它已到稳产阶段后期剩余可采储量和产量开始缓慢下降的一面,又要肯定它还有相当大的潜力。老油区的持续增储是一个普遍现象,占储量增加的相当大的份额。老油区中增储的主力是大盆地和其中的富烃坳陷,关键因素是不断开拓、更新勘探思路并形成与之相配套的技术体系,而且要保证有足够的工作量投入。

Since the end of 1970s,the remnant recoverable reserves in the eastern China have gone through two change periods from 1977 to 1985 and from 1985 to 1998. The author have analyzed the reasons for the falling and ascending and compared the exploration benefit of different period. It is pointed out that everything has two sides should be held when treating the old oil regions in the eastern China-not only to see that remnant recoverable reserves and output begin to drop slowly after the steady producing stage, but also to assure that it still has fairly great potential. Reserves increases continuously in the mature region is a universal phenomenon, which takes the fairly big share of reserves increase. The main contributor of the added reserves in the eastern China is the large scale basins and their bearing rich hydrocarbon sags. The crucial factors are to open up continuously, update exploration train of thought and form a complete set of technical systems, and guarantee to input enough workload.