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针对当前渤海油田多管分注管柱存在的井下封隔器轻微损伤密封不严、井控措施不完善及起管柱作业遇阻等问题,开发了一套具备反洗、防卡及在井下封隔器密封筒轻微损坏失效的情况下实现密封功能的多管分注工艺管柱,解决了目前海上油田多管分注井面临的问题。按照油田安全生产的要求,进行了工艺管柱及相关井下工具的多项功能试验,结果表明设计的工艺管柱及相关井下工具能满足渤海油田使用要求,为渤海油田注水开发提供有效手段。
Aiming at the problems such as the slight damage and seal of the downhole packer existing in the multiple injection pipe string of Bohai Oilfield, the imperfect well control measures and the difficulties encountered during the operation of the pipe string, a set of equipment with backwashing, The multi-pipe dispensing process column with sealing function in the case of minor damage to the packer seal cylinder has solved the problems currently faced by multi-pipe dispensing wells in offshore oilfields. According to the requirements of oilfield safety production, a series of functional tests were carried out on process string and related downhole tools. The results show that the designed process string and related downhole tools can meet the requirements of Bohai Oilfield and provide an effective means for water injection development in Bohai Oilfield.