Page 124 - Handbook Of Multiphase Flow Assurance
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120 5. Flow restrictions and blockages in operations
TABLE 5.4 Methods to dissociate a hydrate plug
Depressurize From upstream of line With hydrate skid
Through service line
Through access wye
From downstream Through topsides
With hydrate skid
Through service line
From middle of line Manifold
Coiled tubing jet From upstream With hydrate skid
From downstream Through topsides
Through PLET
From middle Cut, set plug and lift line
Riser base PLEM
Manifold
Flow chemical Methanol From upstream Through flowline
Through service line
Through chemical line
From downstream Through flowline
Through service line
Through chemical line
Glycol From upstream Through flowline
Through service line
Through chemical line
From downstream Through flowline
Through service line
Through chemical line
Brine From upstream Through flowline
Through service line
Through chemical line
From downstream Through flowline
Through service line
Through chemical line
