Effect of Poly Vinyl Caprolactam Concentration on the Dissociation Temperature for Methane Hydrates

Abstract

The use of KHI in conventional gas production has become common, but its applicability to methane hydrate production has not yet been extensively studied, particularly in the presence of residual hydrate structures. Methane gas from marine hydrate deposits can be produced by methods like depressurization, thermal stimulation, and the injection of hydrate inhibitors. Because residual hydrate structures known as hydrate precursors will exist in the liquid water phase after dissociation, the risk of methane hydrate reformation has to be evaluated during the production and transportation of methane gas through offshore pipelines. Even though one viable option to avoid hydrate reformation is injecting hydrate inhibitors before transporting the fluids through pipelines, one must consider the effect that these chemicals have on hydrate plug dissociation. In the research literature, results regarding dissociation phenomena are few. This study reports the effect on dissociation for methane hydrates formed with the...