Research on the Drilling String Loses Steady Condition by the Screw Coal Miner
In engineering the drilling string flexure affect by kinetic energy and the potential energy.According to the energy method,it has studied the relations drilling string biggest rotational speed with the critical axial force during the drilling string flexure,then it has established the drilling string and the axial critical force mathematical model.The research indicated that the drilling string loses the steady condition to conform the reality,it is advantageous to the screw coal miner important instruction significance to the design.
screw coal miner loses steady condition energy method drilling string
Yajun An
Liaoning Technical University Fuxin,china
国际会议
太原
英文
212-213
2011-02-26（万方平台首次上网日期，不代表论文的发表时间）