西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (3): 122-126.DOI: 10.3863/j.issn.1674-5086.2010.03.023

• 石油与天然气工程 • 上一篇    下一篇

气藏水平井连续携液理论与实验

肖高棉 李颖川 喻 欣   

  1. “油气藏地质及开发工程”国家重点实验室?西南石油大学,四川 成都 610500
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-06-20 发布日期:2010-06-20

THEORY AND EXPERIMENT RESEARCH ON THE LIQUID CONTINUOUS REMOVAL OF HORIZONTAL GAS WELL

XIAO Gao-mian LI Ying-chuan YU Xin   

  1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu Sichuan 610500,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-06-20 Published:2010-06-20

摘要: 在气藏水平井中随着生产管柱倾斜角度的变化,井筒内液体的重力作用会发生改变,从而引起气液两相流型的变化。以产气为主的气井井筒内液体主要以液膜、液滴的形式出现,由此出现了液滴模型与液膜模型两种解释积液的理论。从这两种携液理论出发,考虑生产管柱倾斜角度的影响,对倾斜管内液滴、液膜进行受力分析,推导出了随管柱倾斜角度变化的连续携液临界流速的计算式,使之适用于水平井连续携液临界流量的计算。设计制作了水平气井连续携液实验装置并进行了实验研究,观测气藏水平井中气水两相运动与流型变化情况并测试其临界携液气量,结果表明,气藏水平井中水平井段的液体以液膜携带为主,但直井段中越接近井口,越以液滴携带为主,液滴模型也能适用于计算气藏水平井的连续携液临界流速。

关键词: 水平井, 连续携液, 临界流速, 液滴, 液膜

Abstract: In horizontal gas well,the gravity of liquid will change with the change of inclination angle of wellbore,which causes the change of gas-liquid two-phase flow pattern.The liquid occurs mainly with the form of droplet and film in gas wellbores,so there are two theories that can explain the liquid loading:the liquid droplet model and the liquid film model.Based on this two liquid continuous removal theories,and with the inclination effects taken into account,a computing formula that computes the critical flow rate of liquid continuous removal in horizontal gas well is proposed based on the force analysis of liquid droplet and film.The experiment facilities are also made to study the liquid continuous removal in horizontal gas well.The situation of gas-water two-phase moving and the change of flow pattern are observed.Experiment results show that the liquid removal is mainly with the form of liquid film in horizontal well section.In vertical well section,more droplets will be yielded in well head,so the liquid droplet model is also applicable in predicting the liquid continuous removal critical flow rate of horizontal gas well.

Key words: horizontal well, continuous removal liquid, critical flow rate, liquid droplet, liquid film

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