高陡构造破碎井眼稳定技术难点及对策  

HOLE STABILIZATION PROCESS IN BROKEN FORMATION OF HIGH AND STEEP STRUCTURE

作　　者：唐威[1] 庞建新[1] 

机构地区：[1]中原油田钻井三公司技术管理部

出　　处：《钻采工艺》2005年第4期12-14,22,共4页Drilling & Production Technology

摘　　要：乌龙1井是在云南楚雄盆地北部次坳陷盐丰凹陷乌龙口背斜高部位布置的第一口重点区域探井,该井主要地质特点表现为地层古老,地层倾角大,岩石较为破碎,井眼极易失稳。通过优化井身结构、钻井参数以及搞好钻井液性能和维护等方面的工作,确保了该井井眼稳定,并取得了良好效果,对该地区施工具有一定的借鉴作用。Well Wulong 1 is an exploration well located at North of Chuxiong basin in Yunnan. The main geologic features in the well are large stratigraphic dip, broken formation, and unstable hole. These features are easy to result in bit freezing, wiping in long section, bit tooth broken, etc. accident. Through optimized casing program and drilling parameter, predicting reservoir pressure and caving stress, and determining rational drilling fluid density, the problem on hole stabilization is solved and good result is obtained .

关 键 词：高陡构造 破碎地层 井眼稳定 

分 类 号：TE21[石油与天然气工程—油气井工程]