中国南海珊瑚岛礁钻探技术

Drilling technology for coral islands and reefs in the South China Sea

摘要:

中国南海珊瑚岛礁拥有巨大的资源潜力和科研价值。2013—2017年，贵州省地矿局一一五地质大队配合中国科学院在南海诸岛礁实施科研钻井数百口，施工过程中，合理解决了远离大陆封闭环境中的各种特殊困难，攻克了“珊瑚岛礁松散珊瑚砂层抽水试验成井下管”、“珊瑚岛礁第四系覆盖层钻探取心”、“珊瑚岛礁泻湖砂层钻探取心”、“珊瑚岛礁钻探事故预防与处理”等重要技术难题，形成了一套成熟完整的适用于岛礁勘查的钻探技术工艺体系，开我国岛礁钻探工程实践之先河。该技术体系能保证岛礁钻探工程安全和质量，对于我国今后岛礁勘查具有重要的指导意义。

Abstract:

Coral islands and reefs in the South China Sea have great resource potential and scientific research value. From 2013 to 2017， 115 Geological Team， Bureau of Geology and Mineral Exploration and Development of Guizhou Province， under auspices of the Chinese Academy of Sciences， drilled hundreds of boreholes for scientific research on various islands and reefs in the South China Sea. With properly tackling of the special difficulties in the secluded environment far away from the mainland during drilling， many important technical difficulties have been solved， including “Pumping test and well completion screen pipe placement for loose coral sand formation at coral island reef ”， “Quaternary overburden core drilling at island reef”， “Lagoon sand core drilling at coral island reef”， “Prevention and treatment of drilling accidents at coral island reef”； and a complete proven drilling technology system suitable for island and reef exploration has been formed. The geological brigade is the pioneer in the practice and theoretical research of island reef drilling engineering in China. The drilling technology system can guarantee the safety and quality of island and reef drilling projects， and has important guiding significance for the future exploration of island and reef in China.