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.
出处
《石油机械》
北大核心
1994年第2期19-24,共6页
China Petroleum Machinery
关键词
牙轮钻头
切削
钻井
井壁模式
roller bit, cutting mechanism, side-wall pattern
