抽油杆工作性能的研究,对于改善采油企业的技术经济指标具有重大的意义。特别是在一些老油田,由于含水量越来越高,地层压力越来越低,以及油井液体腐蚀性的加重,抽油杆事故便与日俱增,导致油井免修期的缩短和原油产量的锐减。 因此,提高抽油杆的强度,减少抽油杆的故障进而延长其使用寿命,是目前各国都十分 The research on the working performance of sucker rod is of great significance for improving the technical and economic indexes of oil recovery enterprises. Especially in some old oilfields, sucker rod accidents have been increasing due to higher and higher water content, lower and lower formation pressure, and corrosiveness of oil wells. As a result, oil wells have been reduced in maintenance-free period and crude oil output has dropped sharply. Therefore, to improve the strength of the sucker rod to reduce the sucker rod failure and thus extend its service life, is the current countries are very