套损井修井磨铣参数优化  

Parameter Optimization for Milling in Casing Damaged Wells

作　　者：刘祖林[1] 王木乐[2] 陈灿[2] 余涛[2] 邹峰梅[2] 马志亮 刘文[4] 

机构地区：[1]中石化中原石油勘探局井下特种作业处,河南濮阳457001 [2]中石化中原油田分公司采油工程技术研究院,河南濮阳457001 [3]北京温菲尔德石油技术开发有限公司,北京100191 [4]中石化中原石油勘探局,河南濮阳457001

出　　处：《石油天然气学报》2012年第5期99-102,5-6,共4页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2011ZX05017-003)

摘　　要：中原油田在套损井磨铣过程中由于管柱组合、施工参数选择不当,常发生套管开窗事故。在对套管开窗事故因素进行分析的基础上,应用有限元方法,对施工参数与磨鞋横向位移的关系进行了分析,并从磨铣压力和磨铣钻速两方面对磨铣参数进行了优化。研究认为,通过确定最优钻压和转速的范围,可以减小磨鞋的横向位移值,进而达到在磨铣过程中降低磨鞋偏磨套管风险的目的。现场应用表明,优化结果对现场施工具有重要的指导意义,施工效果良好。For unsuitably selected casing string assembly or operation parameters,sidetracking always happened during milling in Zhongyuan Oilfield.Based on the analysis of causes for sidetracking,the relationship between the operation parameters and the transverse displacement of the casing string assembly was analyzed by means of FEA,and the milling pressure and rotation speed was also optimized.It is found that the optimal weight on bit and rotation speed can reduce the transverse displacement of mill shoes,and the probability of sidetracking.Field application shows that it provides a basis for field operation and good effect is obtained.

关 键 词：磨铣 套损井 临界钻压 磨铣管柱 

分 类 号：TE358[石油与天然气工程—油气田开发工程]