North Two Area Western Inefficient Well Development Effect Evaluation And Management Countermeasures Study

Along with the development the extension of time, after oilfield enters into high water-cut stage and inefficient increasing proportion of well, affected the economic benefits,must to inefficient wells take effective measures to undertake administrative,to ensure that the oilfield quality of production.In order to give inefficient Wells to provide adequate basis over, need to study of various factors for low inefficient well influence limits and extent ,according to the different low inefficient wells causes, targeted take technology measures to control,so as to achieve the purpose of optimal treatment ways.Sabei development zone after forty years of water flooding mining, to enter the high water-cut stage of development phase, many sets of wells web development, different well spacing style, making interlayer, inner interference serious. This paper analyzes the present situation of low oil wells, from the adaptability of injection-production patterns nets, reservoir heterogeneity, stratum condition, wells factors such as injected condition for quantitative analysis, research each kind of factors on the influence of low inefficient wells scope and well, further to the economic governance stripper well inefficient countermeasures are discussed, low inefficient well discussed mainly concentrated in once infilled wells nets and secondary infilling wells nets, should according to different well spacing of adjustment condition, different now well nets conditions and different residual oil distribution characteristic,take different adjustment mode. To perfect injection-production patterns nets, optimize oil wells than number, increase the water flooding control degree, increased recoverable reserves to give priority to. Measures to adjust the means of transfer by a single oil conversion well into oil conversion well the main switch, and overhaul of oil wells, update, fill holes combination, and take the appropriate fracturing, comprehensive adjustment measures for pump etc. Based on technical economic theory, established model of optimal economic low inefficiency well, calculate the optimal proportion of inefficient wells, and measures operating costs in certain circumstances, the optimization program, ultimately forming a low-yield wells inefficient management approach.