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空气钻井与常规钻井液钻井相比,可以显著提高钻井速度,避免地层伤害,避免地层漏失。但是由于空气钻井实际应用时间较短,还存在诸多技术难点。根据大量文献资料,专门针对空气钻井中的井斜控制、地层出水的处理、岩层的识别、井下燃爆的控制、保护钻具的措施、空气钻井取心的措施、空气钻井条件下的环境保护措施等技术难点详细总结出了一系列对策,以期在实际操作中成为良好的理论依据。
Compared with conventional drilling fluid drilling, air drilling can significantly improve drilling speed, avoid formation damage and avoid formation loss. However, due to the short practical application of air drilling, there are still many technical difficulties. According to a large number of documents and data, it is mainly aimed at the control of well deviation in air drilling, the treatment of formation water discharge, the identification of rock strata, the control of downhole blasting, measures to protect the drilling tools, air drilling coring measures, environmental protection under air drilling conditions Measures and other technical difficulties summed up in detail a series of countermeasures, with a view to becoming a good theoretical basis in practice.