Wellbore treatment of is an extremely crucial link in maintaining stable production of oilfields during the development process.Accurate and excellent wellbore management can effectively reduce the number of workovers and lower the operation frequency.Nevertheless,the particularity and difference of the exploited formation cause numerous difficulties for wellbore treatment.According to statistics on the proportion of corrosion and eccentric wear wells in different horizons and blocks in recent years,the wellbore problems in the operation area is analyzed and the countermeasures are formulated.Through parameter optimization and intelligent intermittent opening,pump efficiency can be effectively enhanced and the"liquid hammer"effect can be mitigated.The eccentric wear is reduce by replacing fatigued tubing and rods with long service time,optimizing the combination of tubing and rods,and reasonably adjusting the number and position of centralizers.By optimizing the dosing cycle and dose of corrosion inhibitors and implementing anode short-circuiting,the corrosion rate of tubing and rods can be further effectively slowed down.Adopting the approach of"one well,one countermeasure"and analyzing specific problems in a targeted manner can achieve the goal of reducing the frequency of workovers.
wellbore treatmentintelligent intermittent openingcorrosioneccentric wearcorrosion inhibitorpipe and rod combination