Non-Rotating Drill Pipe Rubber Protectors 1. Introduction: Using of rubber non-rotating drill pipe protectors is one of the most important technology measures to reduce the casing wear and rotary torque of drill pipe in case of drilling deep well, ultradeep well, extended reach well, horizontal well and workover well, Wear will reduce the casing string's anti-collapsing strength, anti-internal pressure blasting strength and other properties, which pose a serious threat to the safety of the casing string. It may cause well control problems and even blowouts. In severe cases, the well may be scrapped . In order to solve the problem of casing wear, our company has conducted in-depth research on casing wear technology and produced corresponding wear sleeves to solve the casing wear problem.