Method of transitioning to kinetic hydrate inhibitors in...

Details Method of transitioning to kinetic hydrate inhibitors in... Method of transitioning to kinetic hydrate inhibitors in...

2009-07-22

2011-11-01

Suchfield, George (Department: 3676)

Wells

Submerged well

Multiple wells

C137S013000, C166S244100, C166S310000, C507S090000, C507S266000

Reexamination Certificate

active

08047296

ABSTRACT:
The technical challenges for a smooth transition between using both a thermodynamic hydrate inhibitor (THI) and a kinetic hydrate inhibitor (KHI) to simply using only the KHI in multiple tie-in gas natural gas production systems is solved by adding more THI in a first pipeline leg of the production system while ceasing adding THI in a second pipeline leg of the system. Further, more KHI is added into the second leg of the system, and subsequently THI is gradually and/or slowly reduced in the remaining legs of the system until only KHI is being injected, after which the KHI amount in all legs may be reduced to the equilibrium or steady-state levels.

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