Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Hydrate Formation in Non-Emulsifying Systems Under Shut-in and Restart Conditions
Submission Author:
Celina Kakitani , PR
Co-Authors:
Celina Kakitani, Daniela Carolina Marques, Moisés Marcelino Neto, Rigoberto Morales, Amadeu Sum
Presenter: Celina Kakitani
doi://10.26678/ABCM.COBEM2019.COB2019-1156
Abstract
Hydrate formation and blockage in oil and gas flowlines is one of the concerns in offshore operations, specially in shut-in and restart conditions. In order to increase insight into the hydrate formation and accumulation mechanism under transient condition, experiments were performed using a visual rocking cell with a multiphase system (water + gas and water + gas + oil). Two different gas were tested (pure methane and gas mixture of methane + propane). Also, different driving force and liquid loading were tested in order to evaluate the hydrate formation behavior at transient condition. The experiments showed that hydrate morphology was highly influenced by the subcooling. Moreover, the hydrate formation with two phase system resulted in a highly porous hydrate, while experiments with three phase system resulted in hydrates with different morphology, depending on the subcooling.
Keywords
Clathrate hydrate, Flow assurance, Rocking cell, Shut-in, Restart
