Abstract: Petroleum province of the Eastern China,the most important oil production region in China has been experienced over 40 years' exploration and development.The resource potential of this area is of much concern.The number of exploration target and the magnitude of resource potential in this region were investigated,and the four indexes including drilling degree,annual increasing curve of reserve,reserve discovery rate curve and resource-proved rate were analyzed.The criterion of step-by-step exploration suitable for China was proposed.The exploration stage of petroleum province of East China can be divided into two types according to the above four indexes.One is developing strata in developed area,and another is developing area and new strata in the developed area.The former strata are in the middle stage of exploration,and the reverse can increase continuously and stably.The latter strata are in the early stage of exploration,and the reserves can increase quickly.

Key words: East China, petroleum province, resource potential, exploration target, exploration stage, division criterion

摘要： 东部油气区是中国最重要的石油生产基地.经过40多年的勘探开发后,其生产潜力是一个备受关注的问题.对东部油气区钻探程度、储量年增长曲线、储量发现率曲线和资源探明率4项指标进行了分析,充分考虑了本区实际存在的勘探目标和资源潜力,初步提出了适合我国国情的勘探分期标准.依据4项指标将本区勘探领域分为老区生产层系和新区与老区新层系两大类.研究结果表明,前一类处于勘探中期,储量可以持续稳定增长;后一类处于勘探早期,储量可以快速增长.

关键词: 中国东部, 油气区, 资源潜力, 勘探目标, 勘探阶段, 分期指标