Laboratory studies and field experiences indicate hydrate-inhibition synergy is gained through the combination of two or more thermodynamic hydrate inhibitors (THIs) or a combination of a THI and a low dosage hydrate inhibitor (LDHI). This is termed a hybrid hydrate inhibition (HHI).
In this TOTM we will demonstrate the synergy effect of mixed THIs like NaCl and MEG solution. We also present a simple shortcut method for estimating hydrate formation temperature depression in the presence of mixed THIs. In the next TOTM, we will discuss the results of a successful application of combined methanol and a KHI solution for well producing natural gas, condensate, and water in the Gulf of Mexico (GOM).
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