高含硫气井罐装电潜泵系统排水采气工艺
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摘要
为了将常规气井常用的电潜泵排水采气工艺应用于高含硫气井,同时满足高含硫气井保护套管的要求,基于高含硫气井的完井方式及电潜泵排水采气工艺自身的技术特点,针对套管保护、气体干扰及深井电潜泵机组振动等问题,在完井管柱设计、工具配套等方面开展了攻关研究,并在L2井进行了排水采气工艺设计。结果表明:(1)所研发的一套以罐装电潜泵系统为主体、结合锚定式插管封隔器形成的高含硫气井完井管柱系统能够实现电潜泵的正常运行,并且满足保护套管的要求;(2)采用多相流泵及放气管线可以应对气体干扰的问题,使用自动换向阀可以降低电潜泵复杂流道对气井自喷的影响,配套带锚定机构的插管封隔器能够降低管柱振动;(3)所设计的罐装电潜泵系统可应用于?244.5 mm和?177.8 mm套管,其中?244.5 mm套管对应的电潜泵最大排量为900 m3/d、最高扬程为4 500 m;?177.8 mm套管对应的电潜泵最大排量为300 m3/d、最高扬程为3 000 m。结论认为,该项研究成果为高含硫气井实施电潜泵排水采气工艺提供了技术支撑。
In order to apply the electric submersible pump(ESP) based drainage gas recovery technology that is commonly used in conventional gas wells to high-sulfur gas wells, and meet the requirements on casing protection of high-sulfur gas wells, we conducted a series of technical researches on casing protection, gas interference and vibration of deep-well ESP set in terms of a completion string design and support tools based on the completion modes of high-sulfur gas wells and the technical characteristics of ESP drainage gas recovery technologies. And the research results were used in the design of Well L2 drainage gas recovery. The following research results were obtained. First, the completion string system of high-sulfur gas wells is developed with a canned ESP system as the main part, combined with the anchor intubation packer. By virtue of this system, the normal operation of ESP is guaranteed and the requirements on casing protection are satisfied. Second, gas interference can be dealt with using multi-phase pump and gas venting pipes, the effect of an ESP complex flow path on the gas flowing of gas wells can be diminished by means of an automatic reverse valve, and the string vibration can be reduced using an intubation packer equipped with an anchor mechanism. Third, the canned ESP system designed in this paper is applicable to ?244.5 mm and ?177.8 mm casings. And the ESP corresponding to ?244.5 mm casing has the maximum flow rate of 900 m~3/d and the maximum lift height of 4 500 m, and that corresponding to ?177.8 mm casing has the maximum flow rate of 300 m~3/d and the maximum lift height of 3 000 m. It is concluded that this research result provides a technical support for the implementation of ESP based drainage gas recovery technology in high-sulfur gas wells.
In order to apply the electric submersible pump(ESP) based drainage gas recovery technology that is commonly used in conventional gas wells to high-sulfur gas wells, and meet the requirements on casing protection of high-sulfur gas wells, we conducted a series of technical researches on casing protection, gas interference and vibration of deep-well ESP set in terms of a completion string design and support tools based on the completion modes of high-sulfur gas wells and the technical characteristics of ESP drainage gas recovery technologies. And the research results were used in the design of Well L2 drainage gas recovery. The following research results were obtained. First, the completion string system of high-sulfur gas wells is developed with a canned ESP system as the main part, combined with the anchor intubation packer. By virtue of this system, the normal operation of ESP is guaranteed and the requirements on casing protection are satisfied. Second, gas interference can be dealt with using multi-phase pump and gas venting pipes, the effect of an ESP complex flow path on the gas flowing of gas wells can be diminished by means of an automatic reverse valve, and the string vibration can be reduced using an intubation packer equipped with an anchor mechanism. Third, the canned ESP system designed in this paper is applicable to ?244.5 mm and ?177.8 mm casings. And the ESP corresponding to ?244.5 mm casing has the maximum flow rate of 900 m~3/d and the maximum lift height of 4 500 m, and that corresponding to ?177.8 mm casing has the maximum flow rate of 300 m~3/d and the maximum lift height of 3 000 m. It is concluded that this research result provides a technical support for the implementation of ESP based drainage gas recovery technology in high-sulfur gas wells.
引文
[1]李玉飞,佘朝毅,刘念念,张华礼,张林,朱达江.龙王庙组气藏高温高压酸性大产量气井完井难点及其对策[J].天然气工业,2016,36(4):60-64.Li Yufei,She Chaoyi,Liu Niannian,Zhang Huali,Zhang Lin&Zhu Dajiang.Completion difficulties of HPHT and high-flowrate sour gas wells in the Longwangmiao Fm gas reservoir,Sichuan Basin,and corresponding countermeasures[J].Natural Gas Industry,2016,36(4):60-64.
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[5]孙莉,樊建春,孙雨婷,张喜明,文敏.气井完整性概念初探及评价指标研究[J].中国安全生产科学技术,2015,11(10):79-84.Sun Li,Fan Jianchun,Sun Yuting,Zhang Ximing&Wen Min.Discussion on concept and evaluation index of gas well integrity[J].Journal of Safety Science and Technology,2015,11(10):79-84.
[6]卢亚锋,林元华,杨江海,陈逸飞,李善军.川东飞仙关组气藏高含硫气井完井工艺设计研究[J].天然气勘探与开发,2008,31(2):53-56.Lu Yafeng,Lin Yuanhua,Yang Jianghai,Chen Yifei&Li Shanjun.Well-completion design of high-sour gas wells in Feixianguan Formation gas reservoirs,eastern Sichuan Basin[J].Natural Gas Exploration and Development,2008,31(2):53-56.
[7]黎洪珍,刘萍,刘畅,吴禄兰,程姣.川东地区高含硫气田安全高效开发技术瓶颈与措施效果分析[J].天然气勘探与开发,2015,38(3):43-47.Li Hongzhen,Liu Ping,Liu Chang,Wu Lulan&Cheng Jiao.Technologic bottleneck of effectively developing high-sour gasfields in eastern Sichuan Basin and its countermeasure effect[J].Natural Gas Exploration and Development,2015,38(3):43-47.
[8]卢富国.电潜泵排水采气是又一种排水采气后续工艺[J].钻采工艺,1999,22(6):38-41.Lu Fuguo.A follow-up technique for dewatering gas production using submersible electric pumps[J].Drilling&Production Technology,1999,22(6):38-41.
[9]熊杰,王学强,孙新云,王威林,彭杨,朱昆.深井电潜泵排水采气工艺技术研究及应用[J].钻采工艺,2012,35(4):60-61.Xiong Jie,Wang Xueqiang,Sun Xinyun,Wang Weilin,Peng Yang&Zhu Kun.Research and application of drainage gas recovery technology by electrical submersible pump in deep gas well[J].Drilling&Production Technology,2012,35(4):60-61.
[10]Sikes MA,Adams DL,Qi JP&Wonitoy K.H2S challenges presented to ESP systems[C]//SPE Middle East Oil and Gas Show and Conference,25-28 September 2011,Manama,Bahrain.DOI:http://dx.doi.org/10.2118/141170-MS.
[11]庞向东.潜油电泵耐腐蚀性技术研究[D].哈尔滨:哈尔滨工程大学,2003.Pang Xiangdong.The behavior of corrosion for ESP[D].Harbin:Harbin Engineering University,2003.
[12]王亚坤.潜油电泵机组防硫化氢腐蚀方案探讨[J].油气田地面工程,2009,28(10):75-76.Wang Yakun.Discussion on the project of anti-corrosion of hydrogen sulfide to submersible electric pump units[J].Oil-Gasfield Surface Engineering,2009,28(10):75-76.
[13]刘恒,丁学光,赵大龙,赵永武.H2S腐蚀对潜油电泵机组的影响[J].石油化工腐蚀与防护,2009,26(2):27-29.Liu Heng,Ding Xueguang,Zhao Dalong&Zhao Yongwu.Impact of H2S gas corrosion on the submersible pumping unit[J].Corrosion&Protection in Petrochemical Industry,2009,26(2):27-29.
[14]庞向东,刘军,梅思杰,迟毅.在含CO2油井中潜油电泵机组耐腐蚀性研究[J].应用科技,2003,30(2):56-58.Pang Xiangdong,Liu Jun,Mei Sijie&Chi Yi.Study of corrosion-resistance of ESP in CO2 well[J].Applied Science and Technology,2003,30(2):56-58.
[15]马进文,金文刚,李昌胜,周戈亮,刘欣欣.电潜泵井防腐工艺探讨[J].石油化工腐蚀与防护,2012,29(1):18-19.Ma Jinwen,Jin Wengang,Li Changsheng,Zhou Geliang&Liu Xinxin.Study on anti-corrosion process for ESP well[J].Corrosion&Protection in Petrochemical Industry,2012,29(1):18-19.
[2]卢齐,林轶斌,赵益秋.永久式封隔器完井技术在龙王庙气藏开发井中的应用[J].钻采工艺,2016,39(2):39-42.Lu Qi,Lin Yibin&Zhao Yiqiu.Application of permanent packer completion technology in Sichuan Longwangmiao gas reservoir[J].Drilling&Production Technology,2016,39(2):39-42.
[3]郭建华,佘朝毅,唐庚,陈艳,施太和.高温高压高酸性气井完井管柱优化设计[J].天然气工业,2011,31(5):70-72.Guo Jianhua,She Chaoyi,Tang Geng,Chen Yan&Shi Taihe.Optimal design and application of completion strings in a HTHPgas well[J].Natural Gas Industry,2011,31(5):70-72.
[4]熊昕东,龙刚,熊晓东,青炳,薛丽娜.高温高压含硫气井完井技术现状及发展趋势[J].天然气技术与经济,2011,5(2):57-61.Xiong Xindong,Long Gang,Xiong Xiaodong,Qing Bing&Xue Lina.Completion technologies for HTHP gas wells with H2S[J].Natural Gas Technology and Economy,2011,5(2):57-61.
[5]孙莉,樊建春,孙雨婷,张喜明,文敏.气井完整性概念初探及评价指标研究[J].中国安全生产科学技术,2015,11(10):79-84.Sun Li,Fan Jianchun,Sun Yuting,Zhang Ximing&Wen Min.Discussion on concept and evaluation index of gas well integrity[J].Journal of Safety Science and Technology,2015,11(10):79-84.
[6]卢亚锋,林元华,杨江海,陈逸飞,李善军.川东飞仙关组气藏高含硫气井完井工艺设计研究[J].天然气勘探与开发,2008,31(2):53-56.Lu Yafeng,Lin Yuanhua,Yang Jianghai,Chen Yifei&Li Shanjun.Well-completion design of high-sour gas wells in Feixianguan Formation gas reservoirs,eastern Sichuan Basin[J].Natural Gas Exploration and Development,2008,31(2):53-56.
[7]黎洪珍,刘萍,刘畅,吴禄兰,程姣.川东地区高含硫气田安全高效开发技术瓶颈与措施效果分析[J].天然气勘探与开发,2015,38(3):43-47.Li Hongzhen,Liu Ping,Liu Chang,Wu Lulan&Cheng Jiao.Technologic bottleneck of effectively developing high-sour gasfields in eastern Sichuan Basin and its countermeasure effect[J].Natural Gas Exploration and Development,2015,38(3):43-47.
[8]卢富国.电潜泵排水采气是又一种排水采气后续工艺[J].钻采工艺,1999,22(6):38-41.Lu Fuguo.A follow-up technique for dewatering gas production using submersible electric pumps[J].Drilling&Production Technology,1999,22(6):38-41.
[9]熊杰,王学强,孙新云,王威林,彭杨,朱昆.深井电潜泵排水采气工艺技术研究及应用[J].钻采工艺,2012,35(4):60-61.Xiong Jie,Wang Xueqiang,Sun Xinyun,Wang Weilin,Peng Yang&Zhu Kun.Research and application of drainage gas recovery technology by electrical submersible pump in deep gas well[J].Drilling&Production Technology,2012,35(4):60-61.
[10]Sikes MA,Adams DL,Qi JP&Wonitoy K.H2S challenges presented to ESP systems[C]//SPE Middle East Oil and Gas Show and Conference,25-28 September 2011,Manama,Bahrain.DOI:http://dx.doi.org/10.2118/141170-MS.
[11]庞向东.潜油电泵耐腐蚀性技术研究[D].哈尔滨:哈尔滨工程大学,2003.Pang Xiangdong.The behavior of corrosion for ESP[D].Harbin:Harbin Engineering University,2003.
[12]王亚坤.潜油电泵机组防硫化氢腐蚀方案探讨[J].油气田地面工程,2009,28(10):75-76.Wang Yakun.Discussion on the project of anti-corrosion of hydrogen sulfide to submersible electric pump units[J].Oil-Gasfield Surface Engineering,2009,28(10):75-76.
[13]刘恒,丁学光,赵大龙,赵永武.H2S腐蚀对潜油电泵机组的影响[J].石油化工腐蚀与防护,2009,26(2):27-29.Liu Heng,Ding Xueguang,Zhao Dalong&Zhao Yongwu.Impact of H2S gas corrosion on the submersible pumping unit[J].Corrosion&Protection in Petrochemical Industry,2009,26(2):27-29.
[14]庞向东,刘军,梅思杰,迟毅.在含CO2油井中潜油电泵机组耐腐蚀性研究[J].应用科技,2003,30(2):56-58.Pang Xiangdong,Liu Jun,Mei Sijie&Chi Yi.Study of corrosion-resistance of ESP in CO2 well[J].Applied Science and Technology,2003,30(2):56-58.
[15]马进文,金文刚,李昌胜,周戈亮,刘欣欣.电潜泵井防腐工艺探讨[J].石油化工腐蚀与防护,2012,29(1):18-19.Ma Jinwen,Jin Wengang,Li Changsheng,Zhou Geliang&Liu Xinxin.Study on anti-corrosion process for ESP well[J].Corrosion&Protection in Petrochemical Industry,2012,29(1):18-19.