Natural Gas Hydrates: A Guide for Engineers

It is a commonly held belief that hydrates do not form in the presence of a nonaqueous liquid phase (i.e., that hydrate will not form in the presence of condensate or oil). This is not true. Many experimental investigations demonstrate that liquid hydrocarbons can form hydrates. As discussed briefly in Chapter 1, all that is required is the presence of a hydrate former, enough water present to form a hydrate, and the right combination of pressure and temperature. No mention was made of the phase of the former. There is an unfortunate habit among engineers of referring to these compounds as gas hydrates. This leaves the impression that they form only with gases.