钻井液与完井液2017，Vol.34Issue(2)：33-38,6.DOI:10.3969/j.issn.1001-5620.2017.02.006
清洁润滑快钻剂CLSD的研制及性能评价
Development and Evaluation of Drilling Detergent Lubricant CLSD as Fast-drilling Agent
摘要
Abstract
CLSD is a drilling detergent lubricant made from waste grease under predetermined synthesis process and technical parameters. Laboratory evaluation of CLSD showed that it had good compatibility with other additives, and rendered no bad effect on mud rheology. It moderately reduced API filter loss of the mud. Contact angle of 170.5 ℃ meant that CLSD was lipophilic. It had good cleaning and wetting performance, and was able to form oil films on the surface of metals. The surface tension of a 0.4% water solution of CLSD was 68.69% lower than that of fresh water, making it easier for the CLSD to go into the fractures formed by brill bit impacting the hole bottom, thus mitigating reservoir damage by water blocking. Using CLSD, the extreme pressure friction coefficient of a drilling fluid was reduced by 91.83%, and mud cake adhesion coefficient reduced by 62.67%. As temperature went up, the lubricity of the drilling fluid treated with CLSD was enhanced, thereby reducing the drilling torque and the friction coefficient of drilling fluids. CLSD had strong inhibitive capacity. It can be used in saturated drilling fluids. It functioned normally at 160 ℃ or higher. After hot rolling, drilling fluids treated with CLSD did not foam on the whole. The CLSD treated drilling fluids is suitable for use in deep wells and ultra-deep wells, because with an increase in well depth, the property of the drilling fluid becomes more stable. CLSD helped in reducing chip hold-down effect, thereby increasing ROP; in a laboratory simulation, the ROP was increased by 35.2%.关键词
快钻剂/废弃油脂/提速/清洁润湿/润滑性/饱和盐水/高温Key words
Fast drilling agent/Waste grease/increase ROP/Cleaning and wetting/Lubricity/Saturated salt tolerance分类
能源科技引用本文复制引用
杨倩云,王宝田,蔡勇,李秀灵,袁丽..清洁润滑快钻剂CLSD的研制及性能评价[J].钻井液与完井液,2017,34(2):33-38,6.基金项目
中石化基金项目"高密度钻井液清洁快钻技术研究及应用"(JP12011). （JP12011）
