The status quo and trend of sucker rod development in China;

Thermal spraying wear-resistance layer onto material surface of sucker rod;

Upset forging die design of cylindrical ribwork sucker rods;

Influence of resonance on the partial abrasion of rod string in screw pump well;

Dynamics analysis technology for rod string of surface driving screw pump and its application in Daqing Oilfield;

This paper adopted fluid-solid coupling analysis method,and took the rod string,the well fluids and the oil tube as research objects,well fluids are assumed to be Newtonian fluids.