关键词: 钻井液体系, 井眼稳定, 化学抑制, 工艺, 材料, 发展趋势

Abstract: As an indispensible technology to support petroleum engineering, drilling fluid technology has experienced an centuryold development history, turning into a multifunctional and multi-chemical system capable to handle the extreme conditions (such as abnormal high temperature and abnormal high pressure) from its preliminary natural dispersing system. Borehole wall-stabilizing technology is always the key factor to influence drilling fluid technological development. Wall stability, as a fundamental factor, has an impact on new material development and process technological improvement. The study of wall stability is mostly focused on drilling fluid system, process and materials, stress balancing technology and influence of energy changes on wall stability. As computer technology and other technologies (such as nano technology) are combined with drilling fluid technology more and more closely, drilling fluid technology started to see some development trends. The all-new conception to stress overall balance on the field is now around the corner, accelerating China’s drilling fluid technological development

Key words: drilling fluid system, borehole stability, chemical restrain, process, materials, development trend