随着油田开发的不断深入,受油藏非均质性及蒸汽超覆的影响,油层纵向动用不均衡,层间相互影响、相互干扰的矛盾突出,严重制约了油井的产能发挥.鉴于此,研制了稠油井大通径选注选采一体管柱,并为其配套研制了大通径高温悬挂器、高温封隔器和注采双功能阀等工具,通过优选密封材料,优化管柱结构,形成了稠油井大通径选注选采一体管柱技术.应用该技术可有效缓解层间干扰,进一步提高油层纵向动用程度和油井的生产时率.稠油井大通径选注选采一体管柱技术在现场实施16井次,措施有效率100％,累计增油4 650 t,平均单井增油290.6 t,节约作业费用24万元.%Oilfield development has achieved remarkable progress. But it is affected by reservoir heterogeneity and steam overlaying. Moreover, vertical production in reservoirs is not balanced with interlayer mutual influence and interference. These striking contradictions have seriously restricted the production utilization in oil wells. In light of the problem the study and application of the integrated string of large-bore selected injection and selected recovery for heavy oil wells were carried out. The matching tools were developed, such as large-bore high temperature hanger, high temperature packer and injection and recovery bi-functional valve. The seal material was optimized as well as the string structure. The integrated string technology was achieved. The interlayer interference was relieved effectively. The vertical production degree in reservoirs and production time efficiency of oil wells were further improved. The field application shows that the technology was applied 16 well-times with 100% effectiveness. The cumulative oil output increased by 4 650 tons, the single-well oil output increased by 290. 6 tons on average and the operating costs were saved by 240 000 RMB.
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