基于权重分析法的海洋弃置井井筒完整性评价方法建立
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摘要
海洋油气井在生产后期受经济效益和环保风险的影响,需要进行弃置作业。经过多年的开发,海洋油气井井口装置、井筒、管柱等完整性往往遭到破坏,如何科学的评价弃置井的完整性状态,已经成为现场工作者关注的焦点。文章对影响井筒完整性的因素进行分类并分析各因素的影响机理,在此基础上利用权重分析法定量计算各影响因素的权重,给出弃置井完整性分类表,建立海洋弃置井完整性评价方法。现场工作人员利用此评价方法对海洋弃置井进行评价验证,并根据评价结果制定相应的措施,消减弃置作业的风险,对现场具有较好的指导意义。
During the late production period,the offshore oil and gas wells are to be abandoned due to the economic benefits and environmental risks. The integrity of wellheads,wellbores,and pipe strings in offshore oil and gas wells are often destroyed after years of development. How to scientifically evaluate the integrity of the abandoned wells have become the focus of the site workers. In this paper,the influencing factors of the wellbore integrity are classified,the mechanism of the effects of various factors analyzed,the effects of each influence factor weighted,combined with the established the classification of abandoned well integrity table,the and a table of abandon well integrity classification is established, a corresponding evaluation method is set up. It has been used on site and counter measures are planned according to the evaluation results to alleviate any risks. It will be a guide for field job.
During the late production period,the offshore oil and gas wells are to be abandoned due to the economic benefits and environmental risks. The integrity of wellheads,wellbores,and pipe strings in offshore oil and gas wells are often destroyed after years of development. How to scientifically evaluate the integrity of the abandoned wells have become the focus of the site workers. In this paper,the influencing factors of the wellbore integrity are classified,the mechanism of the effects of various factors analyzed,the effects of each influence factor weighted,combined with the established the classification of abandoned well integrity table,the and a table of abandon well integrity classification is established, a corresponding evaluation method is set up. It has been used on site and counter measures are planned according to the evaluation results to alleviate any risks. It will be a guide for field job.
引文
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[12]李隽,王晓冬,王云,等.基于层次分析法的气井完整性评价模式[J].钻采工艺,2013,36(3):31-34.
[13]李军,席岩,付永强,等.利用分段固井方法提高页岩气井筒完整性[J].钻采工艺,2017,40(4):21-24.
[2]张绍槐.井筒完整性的定义、功能、应用及进展[J].石油钻采工艺,2018,40(1):1-8.
[3]张智,李炎军,张超,等.高温含CO2气井的井筒完整性设计[J].天然气工业,2013,33(9):79-86.
[4]Khalifeh M,Hodne H,Saasen A,et al.(2013,May6).Techniques and Materials for North Sea Plug and A-bandonment Operations.Offshore Technology Conference.doi:10.4043/23915-MS.
[5]李顺林,姚慧智,赵果,等.普光高酸性气田井筒管材及完井方案优选.天然气工业,2011,31(9):79-81.
[6]余雄风,郑华林,刘少胡.耦合非均匀地应力的热采井套管塑性损伤分析[J].塑性工程学报,2016,23(3):183-188.
[7]黄小兰,刘建军,杨春和.注水油田剪切套损机理研究与数值模拟[J].武汉工业学院学报,2009,28(3):94-97.
[8]张智,顾南,杨辉,等.高含硫高产气井环空带压安全评价研究[J].钻采工艺,2011,34(1):42-44.
[9]孙传轩,樊春明,刘启蒙,等.海洋500 m水深水下立式采油树设计开发[J].石油机械,2018,46(4):30-34.
[10]尹虎,王海彪.基于CBR的井漏复杂事故的智能预警方法研究[J].科技通报,2018,34(4):195-199.
[11]段永鸿.含H2S气井钻井作业多因素模糊识别及定量计算的风险评价方法[J].中国安全生产科学技术,2017,13(11):149-154.
[12]李隽,王晓冬,王云,等.基于层次分析法的气井完整性评价模式[J].钻采工艺,2013,36(3):31-34.
[13]李军,席岩,付永强,等.利用分段固井方法提高页岩气井筒完整性[J].钻采工艺,2017,40(4):21-24.