复合钻井用新型金刚石钻头研制及现场试验  

Development and Field Experiment on a New Type of Diamond Bits for Combination Drilling

作　　者：周龙昌[1] 吴天乾[2] 吕从容[1] 

机构地区：[1]石油大学华东石油工程学院,山东东营257061 [2]中国石化河南油田分公司,河南南阳473132

出　　处：《石油钻探技术》2004年第2期42-43,共2页Petroleum Drilling Techniques

摘　　要：针对复合钻井钻头转速高、井下动力钻具的输出扭矩受限制的特点,研制了一种尖圆混合布齿、低扭矩的新型金刚石钻头。现场试验证明,新型金刚石钻头扭矩小,寿命长,在相近条件下,比邻井常规金刚石钻头的机械钻速提高30.1%～36.2%,能更好地适应复合钻井的需要。Because ordinary drilling bits are not suitable for high rotation speed and limited torque of mud motors in compound drilling, a new type of diamond bit with alternately arranged round and sharp cutting teeth was invented. The field experiments show that the new type of bit suits the compoun d drilling well with its small torque, long service life. Compared with ordinary diamond bits under the same conditions, the drilling rate can be improved by 30 .1% to 36.2%.

关 键 词：金刚石钻头 机械钻速 复合钻井技术 动力钻具 转盘 钻头结构 布齿设计 

分 类 号：TE921.1[石油与天然气工程—石油机械设备]