牛心坨油田分层注水配套工艺改进与完善
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摘要
牛心坨油田油藏埋藏深,油品为高凝稠油,目前主要分注工艺为油套分注和双管分注,存在封隔器稳定性差、双管无法实施洗井、高压井管柱弯曲及出砂结垢井管柱堵塞等问题,影响了注水开发效果。针对上述问题,加强了分层注水工艺的改进和完善,研制了更为稳定的可洗井封隔器,研发了可洗井双管分注管柱和高压井平衡注水管柱,设计了出砂井防堵注水管柱。通过上述配套工艺的形成,牛心坨油田分层注水稳定性得到明显提高,为区块的高效注水开发提供了技术支持。
Niuxintuo oilfield reservoir is buried deep and its production is of high density.The water injection technique uses the ground control separate layer water injection string.Due to the production of heavy oil,the serious sand production and high formation pressure,the water injection strings failure frequently,such as packer invalidation,tubing bending and blockage of the strings.These problems impact the effects of water-flood development.According to the above problems,since 2011they strengthened the study of layered water injection technology,a more stable but the well-flushing packer was developed,forming the well-flushing layered water injection string,the high pressure injection string,and preventing clogging injection string,etc.Through the form of the matching technology,the stability of layered water injection string for Niuxintuo oilfield is improved to ensure the high-efficiency of water-flood for the block.
Niuxintuo oilfield reservoir is buried deep and its production is of high density.The water injection technique uses the ground control separate layer water injection string.Due to the production of heavy oil,the serious sand production and high formation pressure,the water injection strings failure frequently,such as packer invalidation,tubing bending and blockage of the strings.These problems impact the effects of water-flood development.According to the above problems,since 2011they strengthened the study of layered water injection technology,a more stable but the well-flushing packer was developed,forming the well-flushing layered water injection string,the high pressure injection string,and preventing clogging injection string,etc.Through the form of the matching technology,the stability of layered water injection string for Niuxintuo oilfield is improved to ensure the high-efficiency of water-flood for the block.
引文
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[2]熊春明,唐孝芬.国内外堵水调剖技术最新进展及发展趋势[J].石油勘探与开发,2007(1):83-89.
[3]魏发林,刘玉章,唐孝芬,等.新型选择性堵水剂的研究与应用进展[J].油田化学,2007(1):93-94.
[4]葛党科,张玉祥,葛红江,等.水平井堵水环空封隔材料的合成与性能研究[J].天然气技术,2008(6):40-43.
[5]王晓惠,赵玲莉,孔明炜,等.暂堵凝胶在水平井堵水中的应用[J].石油天然气学报,2010(2):352-355.
[6]王家宏.多油层油藏分层注水稳产条件与井网加密调整[J].石油学报,2009,30(1):80-83.
[7]孙焕志,郭世彬,金奇光,等.新型分层注水工具及配套技术[J].油气田地面工程,2004(5):15.
[8]赵振旺,王春耘,赵梅庆.分层注水定量配水工艺技术研究与应用[J].石油钻采工艺,2004(4):63-65.