Page 307 - Petroleum and Gas Field Processing

Figure 1 Pressure–temperature curves for predicting hydrate formation. (From
Ref. 1.)

Example 1

If the specific gravity of a natural gas stream is calculated and
found to be 0.69, find the hydrate formation pressure (in psia) at a
temperature of 50 F.

Solution
From Figure 1, a pressure of about 330 psia is determined for the
corresponding conditions of temperature and specific gravity
stated.

2nd: To Determine the amount of water vapor at dew point
condition. This method utilizes McKetta–Wehe chart [2], which
relates the gas temperature T and its pressure P to the water
vapor content of the natural gas at saturation conditions, as
presented in Figure 2.

Copyright 2003 by Marcel Dekker, Inc. All Rights Reserved.