A Dynamic Plunger Lift Model for Shale Gas Wells  

作　　者：Shiyu Miao Xiao Liu Xiaoya Feng Haowen Shi Wei Luo Peng Liu 

机构地区：[1]Petroleum Engineering Institute of Yangtze University,Wuhan,430100,China [2]Laboratory of Multiphase Pipe Flow,Gas Lift Innovation Center,China National Petroleum Corp.,Yangtze University,Wuhan,430100,China [3]Key Laboratory of Drilling and Production Engineering for Oil and Gas,Wuhan,430100,China [4]Sichuan Shale Gas Exploration and Development Limited Liability Company,Chengdu,640000,China [5]Sichuan Changning Gas Development Company,PetroChina Southwest Oil&Gas Field Company,Chengdu,610051,China [6]Oil and Gas Technology Research Institute of Changqing Oilfield Company,PetroChina,Xi’an,710018,China

出　　处：《Fluid Dynamics & Materials Processing》2023年第7期1735-1751,共17页流体力学与材料加工（英文）

基　　金：The authors would like to acknowledge the National Natural Science Fund Project(62173049)for Key Project;the Open Fund Project“Study on Transient Flow Mechanism of Fluid Accumulation in Shale Gas Wells”of the Sinopec Key Laboratory of Shale Oil/Gas Exploration and Production Technology.

摘　　要：At present,the optimization of the plunger mechanism is shale gas wells is mostly based on empirical methods,which lack a relevant rationale and often are not able to deal with the quick variations experienced by the production parameters of shale gas wells in comparison to conventional gas wells.In order to mitigate this issue,in the present work,a model is proposed to loosely couple the dynamics of gas inflow into shale gas wells with the dynamics of the liquid inflow.Starting from the flow law that accounts for the four stages of movement of the plunger,a dynamic model of the plunger lift based on the real wellbore trajectory is introduced.The model is then tested against 5 example wells,and it is shown that the accuracy level is higher than 90%.The well‘switch’,optimized on the basis of simulations based on such a model,is tested through on-site experiments.It is shown that,compared with the original switch configuration,the average production of the sample well can be increased by about 15%.

关 键 词：Shale gas well complex and more complex well bore structure plunger lift loose coupling simulation model 

分 类 号：TE24[石油与天然气工程—油气井工程]