摘要
针对单项人工举升工艺不能满足的深抽问题,从举升工艺原理与工艺管柱结构角度,提出了多种可能的组合举升方案以及组合原则。鉴于气举的独特优点,深井泵与气举的组合,尤其是电潜泵(ESP)与气举(GL)的组合具有突出优点,适合大排量深抽。对ESP-GL的举升管柱结构型式进行了探讨,提出了利用小直径油管与气举阀直接连接代替常规环空气举的实施方案,避免了环空直接气举对动液面深度和下部深井泵的影响,为其他举升工艺与气举的组合创造了条件。利用提出的ESP-GL组合设计方法所开展的设计计算表明,在电潜泵排量和举升压头不变的条件下,气举组合接力举升后可使电泵的下泵深度达到6 000 m以上,为深层油气藏的大排量举升提供了技术手段;而在ESP下泵深度不变的条件下,气举组合后有助于提高其产量。
In order to solve the problems that the individual artificial lift techniques can't meet the requirement of deep-well pumping,based on the theory of artificial lift techniques and the composite structure of pipe strings,the combination technical schemes and principles are proposed.In view of the virtues of gas-lift technique,the combination of deep well-pump and gas-lift,especially the combination of electric submersible pump and gas-lift(ESP-GL)has obvious superiority and is fit for the high flow rate deeppumping.The structures of the lift pipestrings are discussed and implement measures are put forward.In order to overcome side effects of the traditional gas-lift that could lead to the casing fluid level lowering and influence lower deep-well pump quality,the minor diameter tube gas injection technology which can provide condition for combination with other artificial lift techniques is proposed.The calculations carried out by the proposed ESP-GL combination method show that if the ESP discharge rate and lifting pressure head are not changed,the pumping depth of the ESP can reach 6 000 m after relay lifting which provides technical support for the high flow rate lifting of the deep zone reservoir;if the depth of ESP is unchanged,airlift can enhance the production of gas well.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第2期165-170,19-20,共6页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
电潜泵
气举
组合举升
工艺
深抽
electric submersible pump(ESP)
gas lif(tGL)
combination lifting
process
deep pumping
