Hydrate inhibitor displacement experiments in jumper-like pipe configurations

摘要

Experiments were conducted in a 3" jumper configuration to investigate the displacement and mixing patterns of hydrate thcrmodynamic inhibitors (MEG and mcthanol) in a water-filled jumper. From the experiments, the following conclusions are drawn: 1. An inhibitor concentration profile was observed for injection velocities below 0.15 m/s; higher velocities were effective at displacing the water out of the jumper and resulted in more homogeneous concentrations throughout the jumper. 2. At low velocities (less than 0.15 m/s), MEG is observed to sink down the vertical sections faster than it is injected because of its higher density. It is also observed to displace the water from the bottom-up out of the low spot.