【摘要】 地震采集中的关键工艺技术—钻井成井技术是地震生产和科研中急需解决的难题之一。在不同类型钻机性能分析的基础上,探讨总结了不同岩性出露区的地震钻井方法。以黄桥地区为例,介绍了流沙、淤泥区地震钻井成井实验研究,提出使用水冲钻(清水井)成井深度最大可达23m,其它钻机清水钻进成井非常困难,以纳土配制的泥浆井钻进成井可靠,最大成井深度可达40m,从而解决了类似地区的钻井成井技术难题。明确指出三次闷井能有效地提高激发能量,提高信噪比。提出的方法对南方海相碳酸盐岩地区地震勘探,特别是低信噪比地区的地震勘探资料品质的提高具有重要意义。更多还原

【Abstract】 One of the key problems in filed surveying and data collecting of seismic exploration is drilling completion technique.On the basis of property analyses of different types of drilling machines,the seismic drilling methods in different outcrops with lithologic variations were discussed.A study of seismic drilling completion in an area with shifting sand and silt in Huangqiao area was illustrated in the paper,an approach to solve the difficult problem of drilling completion in similar areas where maximum drilling completion depth could reach 40 meters by using mud drilling with sodium soil,which was proved reliable,while the maximum drilling completion depth was 23 meters by using water punching and other kinds of drilling machines were quite difficult to reach a deeper depth.It was definitely pointed out that three times closed-in well drilling could effectively arouse energy and S/N.The approach in this paper is meaningful in improving the quality of seismic materials for the seismic exploration in southern marine carbonate areas especially for the areas with low S/N.更多还原