摘要
为了查明浙江省嵊泗列岛北部海底第四系水文地质情况,中国煤炭地质总局第三水文地质队于2007年成功实施了水文地质勘探井——嵊泗二井。该井施工采用小型自升式钻井平台与驳船及辅助船只组合的方式,解决了平台与驳船的连接,克服了风浪和潮汐的影响,以井口管隔离海水并防范地下浅层气逸出;最后采用改造的无簧复位水力式内割刀方式完成弃井作业。整套施工工艺可为海上钻探施工提供借鉴。
To investigate submarine Quaternary hydrogeological condition of northern Shengsi islands, Zhejiang Province, the Third Hydrogeological Exploration Team of CNACG successfully drilled a hydrogeological exploration Shengsi No.2 borehole. The operation of the borehole used a small self-lifting drilling platform combined with barges and auxiliary ships, has settled the hard nut of to link the platform and barges; to overcome influence from fully developed sea and tide; to use mouth tube closed off seawater and prevent seabed superficial gases breaking away; finally to use altered springless resetting hydraulic inner stick bite accomplished the borehole cast off operation. The complete set of construction technology can be used for reference henceforth.
出处
《中国煤田地质》
2007年第A02期90-92,共3页
Coal Geology of China
关键词
海底第四系水文地质
勘探井
施工工艺
submarine Quaternary hydrogeology
exploration borehole
construction technology
