Abstract: Deep water exploration has been highlighted by the world petroleum exploration industry. China's deep water drilling equipment severely lags behind the world advanced level. Deep water drilling and completion technologies develop slowly, and the deep water exploration is still in its primary stage. The "Nigeria" item is located in the Gulf of Guinea, the domain of China's oversea petroleum business. Based on the analysis of a great quantity of data, this paper stresses the risk factors existing in drilling of exploration blocks in Gulf of Guinea, and puts forward methods for risk evaluation, prevention and control, which is favorable for deep water drilling in the area.

Key words: oil and gas exploration, deep water drilling, risk analysis, prevention and control

摘要： 深海石油勘探作业已成为当今世界石油勘探业的发展重点,我国深海钻井装备严重滞后于当今世界先进水平,深海钻井、完井工艺技术发展缓慢,深海钻探处于初级阶段。"尼日利亚"项目位于几内亚湾深海区域,是我国海外石油能源业务的重点领域。该文在经过大量资料分析的基础上,重点研究了几内亚湾深海勘探区块钻井存在的风险影响因素,并提出了风险评价和预防控制方法,对指导该区域深海钻井具有重要意义。

关键词: 油气勘探, 深海钻井, 风险分析, 预防控制