433 - Fundamental studies of clathrate hydrate adhesion
J David Smith, Adam J Meuler PdD, Yuehua Cui PhD, Prof. Robert E Cohen, Prof. Gareth H McKinley, Prof. Kripa K Varanasi Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States
Clathrate hydrate formation and subsequent plugging of deep-sea oil and gas pipelines represent a significant bottleneck for ultra deep-sea drilling. Current methods for hydrate mitigation focus on injecting thermodynamic or kinetic inhibitors into the flow, heating the pipe walls, or managing the flow of formed hydrates. These methods are expensive, energy intensive, and/or environmentally unfriendly. An alternative approach involves minimizing the adhesion of hydrates to surfaces, ideally enough that the force of flow detaches them and prevents plug formation. Systematic studies of hydrate adhesion on smooth surfaces with varying energies are conducted. Surface energies are quantified using Girifalco-Good analysis of advancing and receding contact angles of polar and nonpolar fluids. The shear strengths of hydrate adhesion to these surfaces are measured using a home-built testing apparatus and these values are correlated with the measured surface energies. These fundamental studies may facilitate the development of low hydrate adhesion surfaces.
Wednesday, August 25, 2010 04:00 PM
Symposium in Honor of Kash Mittal (02:00 PM - 04:20 PM)
Location: The Westin Boston Waterfront