Development and Application of Anti-Eccentric Wear Tool in Inclined Well

Zhenjing oilfield,a low porosity and low permeability reservoir,reservoir fluid supply ability is poor and affected by the landform development,mainly in directional well.In the process of oilfield production,quite a proportion of maintenance operations on mechanical production wells are due to rod breakdown or tubing leaking resulted from borehole deviation and eccentrically worn string,it has seriously affected the normal production and greatly increased the operating and material costs.In order to effectively reduce such losses,rod centralizer buffer compensator and a magnetic support of the eccentric wear prevention tools combination has been developed and applied,the downhole friction loss is reduced greatly,the workover-free period is extended,tool designed for the performance indicators to meet the use requirements.