牙轮钻头的侧切机理及井壁模式  

Side-Cutting Mechanism of Roller Bits and Side-Wall Patterns.

作　　者：王珍应[1] 马德坤[1] 

机构地区：[1]西北工业大学,西南石油学院

出　　处：《石油机械》1994年第2期19-24,共6页China Petroleum Machinery

摘　　要：通过分析牙轮钻头外排齿在井底的运动和对井壁岩石的刮切，认识牙轮钻头的侧向切削机理，提出井壁模式的概念和分析井壁模式的方法。井壁模式分析说明，牙轮钻头的侧向切削过程不仅与齿面结构有关，而且与岩石性质、钻井参数有关。By analyzing the movement of the gauge teeth of a roller bit at bottom hole and theircutting action against the side-wall, the side-cutting mechanism of the roller bit is recognized,and a concept of side-wall pattern and a method for analyzing the side-wall pattern are presented. Analysis of the side-wall pattern shows that the side-cutting process of the roller bit is related to not only the teeth surface design but also the rock property and the drilling parameters.

关 键 词：牙轮钻头 切削 钻井 井壁模式 

分 类 号：TE921.1[石油与天然气工程—石油机械设备]