正电聚醇/KCl钻井液体系室内研究  

Laboratory Studies On Positive-Charged Polyglycol/Potassium Chloride Drilling Fluids

作　　者：李胜[1] 鄢捷年[1] 李志勇[1] 李怀科[1] 曹明[1] 李礼[1] 

机构地区：[1]中国石油大学石油工程教育部重点实验室,北京昌平102249

出　　处：《石油钻探技术》2008年第5期58-61,共4页Petroleum Drilling Techniques

基　　金：教育部"长江学者和创新团队发展计划"(批准号:IRT0411)资助

摘　　要：为解决大港油田南部滩海地区因泥岩地层易剥落掉块而造成坍塌、起下钻阻卡等复杂事故的问题,并降低钻井液成本,通过分析该地区地层粘土矿物,结合地层特征对处理剂进行评价,并利用正交设计试验,优化出了适合于该地区的正电聚醇/KCl钻井液体系。其作用机理主要为浊点机理、吸附效应、协同效应、晶格作用和润湿反转作用,尤其是正电聚醇与KCl具有很好的协同效应,使正电聚醇/KCl钻井液体系能够很好地抑制页岩水化分散,起到稳定井壁的作用。评价结果表明,该钻井液体系的抑制性、流变性、滤失性、抗污染性和润滑性等性能优良。For the purpose of reducing drilling fluid expense and solving the problems occurred in Dagang Oilfield, including formation collapse, pipe-sticking, the positive-charged polyglycol/potassium chloride drilling fluids were optimized by orthogonal test designing software-SPSS13.0 based on the analysis of the formation clay and evaluation of the treating agent. Laboratory studies show that this fluid system has better inhibitive capacity, rheology, filtration, anti-pollution and lubricity. This paper also investigates the working mechanism of the mud and shows that positive-charged polyglycol and potassium chloride have synergistic effects, which helps hole cleaning and wellbore stability.

关 键 词：水基钻井液 聚合醇 氯化钾 钻井液性能 

分 类 号：TE254.3[石油与天然气工程—油气井工程]