(246b) Gas Hydrate Formation At Interfaces | AIChE

(246b) Gas Hydrate Formation At Interfaces


Koh, C. - Presenter, Colorado School of Mines
Sum, A. K., Colorado School of Mines
Sloan, E. D., Colorado School of Mines
Chen, L., Colorado School of Mines
Grasso, G., Colorado School of Mines
Abdul Majid, A., Colorado School of Mines
Wu, D., Colorado School of Mines

Gas hydrates are crystalline solids comprised of a hydrogen-bonded water lattice, which traps small gas molecules, such as methane and carbon dioxide. Gas hydrates present a major flow assurance problem when they form blockages in subsea oil and gas pipelines. These compounds can also form during containment of a Deepwater oil spill, leading to blockages of the containment system. Such events can present severe safety, environmental, and economic risks. A key step to developing control strategies of gas hydrate formation in subsea pipelines or containment structures is to understand gas hydrate formation at gas/liquid, liquid/liquid, solid/liquid interfaces. The nature and chemistry of the fluid system can have a significant influence on the physical phenomena leading to hydrate blockage. This paper will present an overview of the state-of-the-art in gas hydrates in flow assurance, and recent experimental data on hydrate formation at interfaces over a range of operating conditions (T,P) and chemistries (salinity, surfactant).