Study on Multi-packer Completion String Optimization

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摘要： 多封隔器裸眼分段完井管柱在高磨地区大规模使用，封隔器间密闭环空压力变化对管柱受力影响大，同时，完井封隔器的完全有效坐封是保障气井井筒完整性的关键点。为此，基于井筒传热机理，建立了多层环空瞬态温度计算模型，结合温度变化效应和体积变化效应，建立了封隔器间密闭环空压力变化计算模型，分析了改造和生产过程中多封隔器间密闭环空压力变化情况，并对完井管柱开展了三轴力学校核。结果表明，改造时，多封隔器间密闭环空压力会降低，生产时，多封隔器间密闭环空压力会升高；考虑多封隔器间密闭环空压力变化后，管柱三轴安全系数会不同程度的降低；基于多封隔器完井管柱结构特征和封隔器坐封原理，优化了完井管柱结构和施工工艺。研究成果对完井管柱结构设计、保障气井井筒完整性具有一定的支撑作用。

关键词: , 多封隔器, 环空压力, 温度, 三轴校核, 管柱结构, 施工工艺, 优化

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WANG Han, LI Yufei, PU Junyu, TANG Geng, ZHANG Lin, LU Linfeng, QIN Shan.

Study on Multi-packer Completion String Optimization[J]. Drilling & Production Technology, 2020, 43(增): 8-11.

王汉, 李玉飞, 蒲俊余, 唐庚, 张林, 陆林峰, 秦山. 多封隔器完井管柱优化研究[J]. 钻采工艺, 2020, 43(增): 8-11.

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Study on Multi-packer Completion String Optimization

多封隔器完井管柱优化研究

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