Based on the characteristics of environmental scientific drilling and in accordance with the main problems existed, this research project centres on the coring technique and the borehole wall and core protection technique by drilling fluid.

• 本研究根据环境科学钻探的特点和存在的主要问题,重点开展取心技术和钻井液护壁护心技术研究,以解决环境科学钻探工程中取心率低、孔壁稳定性差这两大技术难题。