Abstract: A series of petroleum systems have been discovered in Bohai Bay petroleum region,including the Tertiary,the Mesozoic,the Paleozoic and the Proterozoic.Among these systems,the Tertiary is the main target for hydrocarbon exploration and production in the past 50 years,and six petroleum sub-regions have been proved,there are Liaohe,Dagang(including Jidong),Shengli,Jizhong,Zhongyuan and Sea area.According to the time interval between four milestones including the initial point of exploration,the discovery point of hydrocarbon,the 60%point of oil in place(OIP),and the peak of annual production,the exploration and production process of all of the sub-regions mentioned above,can be categorized into three types including fast maturation,medium-rate maturation,and slow maturation.As the production and OIP growth curves of six sub-regions are stacked together,it is very clear that the time of peak OIP and that of peak production for those sub-regions are at different time intervals,and made the growth curves of Bohai Bay petroleum region form a multi-peak type.The Tertiary petroleum system,right now,is still in a "mid-stage of exploration".About more than half of the resources have not yet turned into OIP.In all sub-regions,the Dagang and the Sea area sub-regions would be the main area for the growth of OIP and production in the near future.The future annual crude oil production is estimated to keep a rate of more than 60 million tons per year before 2030 and 50 million tons per year in 2031-2050,and the resources foundation should be considered security.Three petroleum systems in the pre-Tertiary are all promising for hydrocarbon exploration.

Key words: petroleum region, petroleum sub-region, oil in place, production, potential, Bohai Bay

摘要： 渤海湾油区已发现第三系、中生界、古生界和元古界多个石油系统。其中,第三系石油系统是近50多年来勘探开发的重点,已形成了辽河、大港(含冀东)、胜利、冀中、中原和海域6个亚油区。根据勘探起始点、油气发现点、储量六成点和产量高峰点四者相互时间间隔的不同,可将上述亚油区分为"快热"、"中热"和"慢热"3种类型;它们的储量、产量高峰相互错列叠置,使全油区储量、产量年增长曲线呈现"多峰"的特点。目前,全油区尚处在"勘探中期",有一半以上的资源量有待转化成储量,其中,大港和海域两个亚油区是今后"增储上产"的重点。预测全区石油年产量,在2030年以前保持在6 000×10⁴t以上,2031~2050年保持在5 000×10⁴t以上是具备资源基础的。前第三系3个石油系统也具有一定的勘探前景。

关键词: 油区, 亚油区, 储量, 产量, 潜力, 渤海湾