采油井结蜡会增加悬点载荷,形成油管堵塞现象,严重时甚至造成“卡井”事故。本文针对目前Y油田在用的化学防蜡效果不理想的现状,开展了热洗清蜡方式探索。通过先导试验验证清蜡效果,研制热洗不压油层管柱防止污染油层,通过现场试验,优选出适合Y油田的热洗参数。通过化学清防蜡及热洗清蜡的效果及成本对比,热洗清蜡具备推广价值,可以成为保障油田开发、减少卡井、保证井筒清洁的日常维护手段。 Oil wells waxing will increase the hanging point load, the formation of the tubing blockage, and even cause serious “card wells” accident. In this paper, the present Y oilfield in the use of chemical wax effect is not ideal, to carry out the hot wax cleaning method to explore. Through the pilot test to verify the effect of waxing, the development of hot-wash non-pressure oil column to prevent contamination of the oil layer, through field tests, the preferred hot-wash parameters for the Y oil field. Compared with the effect and cost of chemical wax cleaning and hot wax cleaning, hot wax cleaning has the promotion value, which can become a routine maintenance tool for oilfield development, reducing card wells and ensuring wellbore cleaning.