关键词: 无效井, 单井效益评价, 辽河油田, 雷达图分析法, 成本

Abstract: Some oil wells come under the low-efficiency or inefficent state after the oilfields enter their middle and late development stage. Treatment of inefficient wells is one of the main methods to improve development effects at the oilfield. With oilfield development continually unfolded, the treatment amount and difficulty of inefficient wells are rising year by year, with the treatment results becoming increasingly poor. Based on treatment of inefficient wells for improvement of economic performance, this paper designs a system of three evaluation indexes -- treatment rate of inefficient wells, average single-well profit from treatment, and average additional amount of oil from a single well. The radar graph analysis method is also used to evaluate treatment of inefficient wells at each production unit. Meanwhile, the conception of the comprehensive treatment benefit value is put forward to calculate the benefit value for comprehensive treatment of inefficient wells at the company’s oil production units in 2017 and 2018 so that the annual treatment of inefficient wells can be brought under quantitative evaluation. This method can find the faults existing in treatment of inefficient wells at the production units. The causes of poor treatment results can be analyzed according to the related data so as to make the constructive suggestions on the next-year treatment work.