KCl-欠饱和盐水钻井液技术在新疆探区的应用  

The Application of KCL-Undersaturation Salt Drilling Fluid in Xinjiang Exploration Area

作　　者：韩祝国[1] 徐加放[1] 邱正松[1] 郑保领[2] 

机构地区：[1]中国石油大学<华东>石油工程学院,山东东营257061 [2]塔里木油田天然气事业部,新疆库尔勒841000

出　　处：《西部探矿工程》2007年第3期55-58,共4页West-China Exploration Engineering

摘　　要：针对复合盐层、纯盐层钻井过程中所出现的溶、塌、缩、卡、喷、漏等井下复杂情况,结合胜利油田钻盐膏层的经验和新疆探区盐膏层的特点,研制推广了KCl-欠饱和盐水钻井液体系及钻穿盐膏层的技术工艺,并在新疆探区12口井得到了成功应用。室内研究和现场应用表明,该体系具有强抑制、强封堵、流变性好、泥饼质量好、滤失量小的特点,解决了膏盐层、盐岩层的缩径、垮塌,缩短了钻井周期,降低了钻井成本,提高了综合经济效益。Abstract： In view of the down hole complicate situation which include of dissolving, sloughing, shrinking, sticking, lost circulation and so on in composite and purity salt layer, combination drilling experience in Shengli Oilfeild and the feature of Xinjiang exploration area of gypsum, developed and spreaded a KCL-undersaturation Salt Drilling Fluid system and technology, and it was successfully used in 12 wells of Xinjiang exploration area. The lab study and field application indicate that this system has the feature of powerful repress, highly blind in, better rheology, better quality of mud cake and low filtration, resolved the complication of fall down and shrinking drilling in salt of gypsum layers,decreased the drilling circle, cut down the drilling cost and raised the colligation economic effect.

关 键 词：欠饱和 钻井液 盐膏层 井壁稳定 石膏 

分 类 号：TE256[石油与天然气工程—油气井工程]