导向PDC钻头设计及其在临盘地区的应用  

Steerable PDC Bit Design and Its Application in Linpan Area

作　　者：罗恒荣[1] 邹德永[2] 曹继飞[3] 唐玉响[1] 

机构地区：[1]中国石化石油工程西南有限公司临盘钻井公司,山东临邑251500 [2]中国石油大学(华东)石油工程学院,山东青岛266555 [3]中国石化胜利石油管理局钻井工艺研究院,山东东营257061

出　　处：《石油钻探技术》2011年第5期101-105,共5页Petroleum Drilling Techniques

摘　　要：针对常规PDC钻头在胜利油田临盘地区定向井钻进过程中存在的工具面不稳定、井斜角和方位角难以控制、滑动钻进时钻速较低等问题,研究分析了PDC钻头的剖面形状、切削结构、保径设计等对钻头导向性能的影响规律,在此基础上,研制出一种适合临盘地区地层特性的BTM115H型导向PDC钻头。该型PDC钻头采用浅内锥、双圆弧剖面形状,特殊双重切削布齿、短保径设计和侧向力平衡设计,能够有效提高钻头的导向性能和机械钻速。多口定向井的现场应用效果表明,BTM115H型导向PDC钻头在定向钻进过程中,工具面可控性好,复合钻井速度和定向机械钻速较常规PDC钻头都有大幅度提高,为临盘地区的定向井快速钻进提供了有力保障。In order to resolve the problems caused by conventional PDC bit in drilling directional wells in Linpan Area of Shengli Oilfield,such as the instable tool face,difficulty to control inclination and azimuth,low drilling speed etc,a new steerable PDC bit was developed based on the analysis of bit profile,cutting structure,gauge design for steerable capability.The new steerable PDC bit was designed with shallow inner cone,double circular section,double cutter structure and short gauge design,and its stability and steerable capacity was improved.The field application shows that the new bit has more stability for controlling tool face,has higher drilling speed and better borehole quality than that of conventional PDC bits.The new bit ensures quick directional drilling in Linpan Area.

关 键 词：PDC钻头 定向井 定向钻井 钻头设计 机械钻速 临盘地区 

分 类 号：TE921.1[石油与天然气工程—石油机械设备]