深井钻柱临界转速的计算方法  

HOW TO CALCULATE CRITICAL RPM OF DEEP WELL DRILL STRING

作　　者：楼一珊[1] 

机构地区：[1]江汉石油学院石油工程系

出　　处：《钻采工艺》1999年第4期3-5,共3页Drilling & Production Technology

摘　　要：深井钻井中，转速对钻速的影响非常明显，当转速达到某一值时，就会引起钻柱共振，导致钻速降低。在对钻井钻柱进行力学分析的基础上，建立深井钻柱临界转速的计算模型ｎｃ＝３０Ｐ／。通过某油田Ｘ地区的实际数据计算，表明该地区的转速可再提高１５转／分左右。In deep drilling, effects of RPM on ROP are very remarkable. When RPM reaches a certain value,drill string resonance will happen, and then ROP will be reduced. After having analysed the mechanics of drill.string, a model nc =30p/ for calculating the critical RPM of deep well drill string is established. And a calculation using real data obtained from X area of some oilfield is done, it shows that the RPM in this area can be increased 15r/min more.

关 键 词：钻柱 转速 振动 深井 计算 钻井 钻柱设计 

分 类 号：TE245[石油与天然气工程—油气井工程] TE22