Research and Application of Offshore Exploration Rig and Reverse Circulation Sampling Technology
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摘要: 近海海洋地质钻探施工环境比陆域复杂而困难,研发适合近海海洋钻探环境的高效钻机及取样工艺方法对加速我国近海海洋地质调查具有重要现实意义。论述了近海海洋地质调查取样施工环境、对取样施工钻机的要求;介绍了新型近海海洋地质调查钻机的结构性能,简易海浪升降补偿装置的原理、特点及水力反循环“实时”钻探技术的优点;展示了钻机及水力反循环“实时”取样技术的应用效果。Abstract: Offshore exploration drilling is more complicated and difficult than land drilling;thus research and development of high efficient drilling rig and techniques suitable for offshore drilling is important for accelerating offshore geological sur-vey of China.The offshore drilling condtitions are discussed with the requirements for the sampling.Descritpion is made of the performance and specifications of the new offshore drilling rig, the principle of the simple compensation mechanism for the ocean wave, and the“real-time” sampling advantages of the hydraulic reverse circulation drilling process.
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