The comprehensive prevention and cure measures of sucker rod centralizer break are briefly introduced

1,the use of anti-corrosion technology,reduce the impact of corrosion.At present,adding corrosion inhibitor to oil well is a common and effective method to solve wellbore corrosion.Its principle is through the chemical adsorption of corrosion inhibitor and metal surface,forming a solid surface reaction film on the metal surface,isolating the corrosive medium,to protect the metal,prevent corrosion.
2.Deepen the research on anti-wear technology.On the basis of enlarging and strengthening the production technology of the centralizer,further study on the upper sequence of the centralizer is carried out to solve the problem of fast wear of the centralizer in inclined shaft,so that the raw material of the centralizer is transformed from reinforced nylon to polytetrafluoron,and the fixation of the centralizer is changed from one point to three points to improve the service life of the centralizer.

3,strengthen sucker rod centralizer sucker rod aging analysis,prevent the occurrence of fracture accidents.According to statistics,there are two peaks of sucker rod failure,one is within 2-3 years,the failure rate is about 15%,and the other peak is 7 years later,the failure rate is as high as 32-47%.The first peak is the quality of sucker rods,resulting in the exposure of individual quality unqualified sucker rods in each well.The second peak is caused by operation,and then it is caused by fatigue aging for various reasons.Therefore,it is necessary to do a good job in the control of the four processes of pre-well inspection,standardized use,late damage detection and replacement.