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自从发现丝扣油和上扣系数（COEFFICIENTS OFMAKEUP）是钻杆接头强度、螺纹耐磨性和产生断裂的重要因素，近些年来在石油和地质矿产钻探工作中，人们开始重视并研究了钻探管材（包括钻杆、钻铤和套管）用丝扣油类型。如美国石油协会（API）
Since the discovery of COEFFICIENTS OFMAKEUP is an important factor in drill joint strength, thread wear resistance and fracture, drilling and drilling of oil and geology minerals have been paid attention to in recent years. (Including drill pipe, drill collar and casing) with the type of thread oil. Such as the American Petroleum Institute (API)