Nonlinear flow-induced vibration response characteristics of leaching tubing in salt cavern underground gas storage
Title
Nonlinear flow-induced vibration response characteristics of leaching tubing in salt cavern underground gas storage
Subject
Underground gas storage
Leaching
Vibration analysis
Flow rate
Failure (mechanical)
Caves
Rocks
Salt deposits
Tubing
Description
To address flow-induced vibration failure problems of leaching tubing in salt cavern underground gas storage, a nonlinear flow-induced vibration model of the leaching tubing in salt cavern gas storage was established using the energy method, element method, and Hamilton variational principle. In the model, nonlinear factors such as the longitudinal and lateral coupling effect and contact/collision between the center tube and middle tube (tube in tube) were considered. Based on the on-site M example well parameters in Jianghan Oilfield, an experiment to simulate leaching tubing vibration was designed using the similarity principle and carried out to verify the validity and correctness of the proposed model. Thus, the effects of the water injection flow rate, two-port distance, and tubing diameter on the vibration response characteristics of the leaching tubing were analyzed systematically. The vibration failure mechanism of the leaching tubing was revealed, and vibration control methods of the leaching tubing were proposed. First, with the increase in water injection flow rate, the lateral displacement and bending stress of the lower end of the leaching tubing increase, and when the injection flow rate was 5070 m3/h, the vibration intensity of string increased significantly
therefore, the on-site water injection flow rate should be avoided using this interval operation. Second, with the increase in the two-port distance, the vibration response of the center tube increased
when the two-port distance was greater than 40 m, the vibration amplitude and energy of the tubing string increased significantly, and thus the two-port distance should be less than 40 m to the greatest extent possible in on-site production. Third, when the diameter of the leaching tubing decreased, the vibration amplitude and frequency increased, and the corresponding probability of bending deformation and fatigue failure increased significantly
therefore, provided that the other conditions are met, selecting a large tubing string can effectively improve the safety of the leaching tubing string. 2021
41
Publisher
Journal of Energy Storage
Date
2021
Contributor
Liu, Jun
Zeng, Linlin
Guo, Xiaoqiang
Dai, Liming
Huang, Xiao
Cai, Ling
Type
journalArticle
Identifier
2352152X
10.1016/j.est.2021.102909
Collection
Citation
“Nonlinear flow-induced vibration response characteristics of leaching tubing in salt cavern underground gas storage,” Lamar University Midstream Center Research, accessed May 18, 2024, https://lumc.omeka.net/items/show/25712.