Abstract: Investment for global oil and gas exploration reached US$43.4 billion in 2017, while 3D seismic acquisition was 31.3×104km2. A total of 1445 exploratory wells were drilled worldwide, rising substantially as compared to 2016. Meanwhile, there were 256 newly discovered conventional oil and gas fields in the world and the newly additional conventional oil and gas 2P recoverable reserves reached 14.5×108t oil equivalent, a slight increase over 2016. Under the situation of low oil prices, oil and gas exploration has been continually shifted towards mature basins, maintaining a relatively high exploration success rate and a relatively low cost for exploration discovery. The newly-discovered oil and gas reserves are located mainly in the three types of basins -- passive continental margin basin, foreland basin and rift basin. They are concentrated in 13 main areas. Meanwhile, a series of important discoveries have been made in the frontier areas like the deep water and ultra-deep water areas. The enduring investment has brought oil companies significant returns. It is proposed that the Chinese oil companies should appropriately increase exploration investment, extensively acquire exploration blocks in the different areas by means of various channels, and step up “the Belt and Road” oil and gas cooperation. Attention should be focused on the deep to ultradeep water and natural gas areas in the near future.

摘要： 2017 年，全球油气勘探投资为434 亿美元，三维地震采集达31.3×104km2，全球共钻探井评价井1445 口， 同比2016 年均有明显回升。全球新发现常规油气田256 个，新增常规油气2P 可采储量14.5×108t 油当量，与2016 年 相比略有增加。在低油价形势下，油气勘探不断向成熟盆地转移，维持了较高的勘探成功率和较低的勘探发现成本。 油气新发现储量主要位于被动陆缘、前陆和裂谷3 类盆地，集中分布在13 大领域。同时，深水—超深水等前沿领域 获得一系列重大发现，油公司的持续投入取得丰厚回报。建议中国油公司适度加大勘探投入，多途径广泛摄取不同领 域勘探区块，加强“一带一路”油气合作，近期重点关注深水—超深水与天然气等领域。

关键词: 勘探投资；成熟盆地；新区新领域；天然气；深水&mdash, 超深水