Experiment of frictional resistance has been conducted in view of the partial abrasion between rods and tubes caused by the product fluid of polymer, breakage and drop of rods and tubes which lead to shortened pump-check cycle.

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.