水平井钻井第二洗井区环空止动返速的计算  

Calculations of Annular Slip Velocity in the 2nd Cleaning Area during Horizontal Drilling

作　　者：李洪乾[1] 杲传良[1] 任耀秀[1] 刘希圣 

机构地区：[1]胜利油田钻井院钻井所,胜利石油管理局钻井工艺研究院,石油大学(北京)石油工程系

出　　处：《石油钻探技术》1995年第S1期27-29,85,共4页Petroleum Drilling Techniques

摘　　要：根据水平井钻井液携岩要求和岩屑床理论模型，给出了大斜度井及水平井钻井第二洗井区环空止动返速的计算方法，分析了影响环空止动返速的诸种因素。统计得出，我国目前水平井钻井第二洗井区环空止动返速为０．８０～１．０３ｍ／ｓ，可供该洗井区的水力参数及流变参数设计时参考。实例分析表明，采用环空止动返速能准确地评价第二洗井区岩屑床的运移状态。According to the requirements of mudcarrying in horizontal well and the model of cuttingbed theory, the calculations are presented for annularslip velocity in the 2nd cleaning area in highly-inclinedand horizontal wells, and various factors effecting annular slip velocity analyzed. With the statistics, thecurrent annular slip velocity in some oilfields in Chinais 0. 86￣1. 63m/s, which can be used for reference indesign of hydraulic and rheological parameters for thecleaning area. The results show the migration condition of cutting bed in the area can be accurately evaluated with annular slip velocity.

关 键 词：水平井 环空止动返速 岩屑床 第二洗井区 水力参数设计 钻井液流变学 

分 类 号：TE24[石油与天然气工程—油气井工程]