可循环泡沫钻井液在渤海油田的应用  

Application of Recyclable Foam Drilling Fluid in Bohai Oilfield

作　　者：范白涛 刘小刚 何瑞兵 崔国杰 余红丽 

机构地区：[1]中海石油(中国)有限公司天津分公司钻井部

出　　处：《钻井液与完井液》2010年第4期44-46,共3页Drilling Fluid & Completion Fluid

摘　　要：渤海油田潜山地层压力系数低,裂缝、溶洞发育,钻井过程中钻井液漏失严重,因此研究和评价了一种可循环泡沫钻井液体系,并在该地区探井和开发井中首次进行了应用。结果表明,可循环泡沫钻井液的密度低,可在0.6～0.99g/cm3范围内调节;稳定性较好,稳定时间远大于24h;抗温达150℃;对岩心的封堵率均在75%以上,能显著提高岩心的渗透率恢复值,使其均在70%以上,油层保护效果好;满足潜山地层的勘探开发、钻井、录井和测井等各项作业的要求,地层不溢不漏,钻井作业安全、顺利,对低压和衰竭油气藏的勘探开发具有指导意义。A recyclable foam drilling fluid was developed for the buried hill reservoirs that have low formation pressures, developed fractures and caves, and severe mud loss. This drilling fluid system was used firstly in the area, and it has some characters such as the density 0.60-0.99 g/cm3, stable time much more than 24 hours, working at 150 ℃, artificial cores sealing rate more than 75%, and permeability recovery rate more than 70%, which can protect the reservoirs effectively.

关 键 词：渤海油田 潜山地层 防漏堵漏 可循环泡沫钻井液 

分 类 号：TE254[石油与天然气工程—油气井工程]