鄂北工区井壁失稳原因及对策  

Reasons and Countermeasures of Sloughing in the Job Area of North of Hubei

作　　者：杨成玉[1] 

机构地区：[1]中国石化新星公司华北石油局,内蒙古伊金霍洛旗017200

出　　处：《石油钻探技术》2003年第4期70-71,共2页Petroleum Drilling Techniques

摘　　要：井径扩大率超标是鄂北工区井身质量存在的最大问题,一般都达到20％～30％,严重影响成井质量。简述了工区地层特征,分析了井壁失稳原因,介绍了钾-铵离子聚合物钻井液、两性离子钻井液体系及屏蔽暂堵钻井完井液的主要性能及现场维护措施。The unallowable wellbore enlargement rate (20%-30%) is the severest problem of wellbore qualities in the job area of north of Hubei. Based on studying in formation characteristics of this area and analyzing factors contributing to sloughing, this paper presents main properties and maintenances of the following muds : potassium-ammonium polymer mud, amphion mud and shielding pluging mud.

关 键 词：鄂北工区 井壁失稳 原因分析 对策 井眼稳定 井径扩大 聚合物钻井液 防塌钻井液 

分 类 号：TE28[石油与天然气工程—油气井工程]