Natural Gas Hydrates- An Overview

A: That's the most common mistake — blaming a bulk property like wax when the signatures are transient and pressure-driven. The oscillating DP and temperature dip line up with JT cooling creating hydrate crystals right at the restriction, then partially clearing. Wax wouldn't melt and reform on that timescale, and erosion doesn't explain the thermal response.

A: That's mixing up thermal control with phase chemistry. Methanol shifts the hydrate equilibrium, but if flow stops or pressure drops fast, crystals can still form before the inhibitor mixes. Insulation slows heat loss; it doesn't change kinetics during a blowdown.

A: That's confusing erosion logic with phase behavior. Higher velocity doesn't stop hydrate formation if temperature crosses the curve. Pulling back on rate or adding heat shifts the thermodynamics; closing recycle just deepens the temperature drop.

A: That's where people underestimate kinetics. Once you're inside the hydrate stability zone with free water present, nucleation is quick. You don't need days or full blowdown; minutes are enough to create a restriction under static conditions.