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Updated: Sep 22, 2025
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Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole
Published on: August 26, 2019
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Experimental Study on Hydrate Safe Flow in Pipelines under a Swirl Flow System.
Yongchao Rao1,2, Zehui Liu1,2, Shuli Wang3
1Jiangsu Key Laboratory of Oil-Gas Storage and Transportation Technology, Changzhou University, Changzhou 213164, Jiangsu, China.
ACS Omega
|May 23, 2022
Summary
Swirl flow technology effectively inhibits gas hydrate blockage in deep-sea oil and gas pipelines. This study expands the safe flow boundaries for gas hydrates, ensuring operational safety and efficiency.
Area of Science:
- Petroleum Engineering
- Fluid Dynamics
- Chemical Engineering
Background:
- Deep-sea oil and gas exploration increases risks of gas hydrate blockages in pipelines.
- Efficient and economical methods for inhibiting hydrate formation are crucial for safe operations.
Purpose of the Study:
- To investigate the application of swirl flow for controlling gas hydrate risks.
- To systematically study the safe flow of gas hydrates in a swirl flow system.
Main Methods:
- Experimental study of gas hydrate flow, transport, deposition, and plugging in a swirl flow system.
- Theoretical analysis of gas hydrate flow characteristics under swirl conditions.
- Exploration of hydrate growth and coalescence mechanisms in separated and dispersed flow systems.
Main Results:
- Obtained laws governing gas hydrate flow, transport, deposition, and plugging.
- Determined the safe flow region and expanded the safe flow boundary for hydrates.
- Demonstrated the significant influence of swirl flow on hydrate safe flow.
Conclusions:
- Swirl flow is a promising technology for mitigating gas hydrate blockages.
- Understanding hydrate growth and coalescence mechanisms is key to safe flow.
- Critical tangential velocity is a key parameter for hydrate flow control.
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