气井井筒携液模型研究与应用
Study on Fluid-carrying Model in Natural Gas Well Bore and its Application
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- 引用格式:
-
杨蕾,刘宁,刘辉,王华军.气井井筒携液模型研究与应用[J].天然气与石油,2011,29(2):0.doi:
.Study on Fluid-carrying Model in Natural Gas Well Bore and its Application[J].Natural Gas and Oil,2011,29(2):0.doi:
- DOI:
- 作者:
- 杨蕾1，刘宁1，刘辉1，王华军2
- 作者单位:
- 1.长江大学石油工程学院 2.西安石油大学石油工程学院
- 关键词:
- 气井 井筒积液 携液模型
Gas well； Well bore liquid loading； Fluid-carrying model
- 摘要:
- 在气井生产过程中，当气井的产气量小于气井井筒携液的临界产量时，液体就会在井底聚集，从而增加对气层的回压，尤其在低压井中，井筒积液易造成气井停产。20世纪以来，气井临界携液模型有很多，常用的Turner模型、Minli模型，但是都忽略了在气井生产过程中，液体在井筒中所受到的上下表面的压差力。在考虑了液体在井筒中所受到上下表面压差力的基础上，提出了一个新的井筒临界携液模型。从理论上看，该模型计算的最小携液速度和产量比Turner模型、Minli模型计算的要小很多，同时结合实例分析可知运用新模型计算的井筒积液时间更符合于实际生产积液时间，也验证了模型的可行性，从而能更好地指导气田开发。
In gas well production， liquid will accumulate in well bottom if gas well output is less than critical output of liquid carried in gas well bore， which will increase back pressure on gas reservoir， especially in low pressure well， it is easy to result in gas well production halts if liquid accumulates in well bore. Since the Twentieth century， established have been a number of models on critical liquid carried in gas well， such as frequently-used Turner model and Minli model. However， differential pressures on upper and lower surfaces of liquid in gas well bore are ignored in gas well production. Now a new model on critical liquid carried in gas well is established according to the above mentioned differential pressures and practicability of the model is test and verified in an example in order to better guide future gas field development.
