群库恰克地区井壁失稳影响因素的研究

摘要

Statistics of drilling complex events indicated that all kinds of complex events totally happened 129 times in group 6, group 601 and group 7 wells, and seriously affected safety and progress of drilling engineering in Qunkuqiake area. In this paper, through analyzing rock mineral composition and physical and chemical conditions of the rock, combining with practical problems encountered in drilling,main influencing factors of sidewall instabili⁃ty, the function and importance of drilling fluid in the drilling process have been analyzed. It will provide a reasona⁃ble basis for the research of sidewall stability in this area.%群库恰克地区钻井复杂事件统计表明，群6、群601及群7井中共发生各类复杂事件129次，严重影响了钻井工程安全和工程进度。对此问题，通过分析失稳井段岩石矿物组分与岩石理化的情况并结合实际钻探中遇到的问题，研究了井壁失稳的主要影响因素，并分析了钻井液在钻探过程中所起的作用及其重要性，为该地区井壁稳定技术的研究提供了合理的依据。