新型石油钻杆的研制

Development of a new drill pipe

实用新型是一种石油开采工具,其结构简单,通过第二套环的奇特结构保证公接头和母接头的结合密封性,通过梯形槽则提高了夹持操作的便捷性。

This article describes a new drill pipe featuring simple structure. The unique structure of the second ring ensures thetightness of the joints,and improve the convenience of carrying operation by trapezoidal corrugation.