Page 182 - Petroleum and Gas Field Processing

2. For the treater diameters selected in the table, only the values
of L shown in bold are acceptable, as they satisfy both settling
and retention time constraints.
3. As the treating temperature increases, the size of the coalescing/
settling section decreases.
4. There is no need to treat the emulsion at 125 F, as the reduc-

tion is treater size is not significant, and the increased tem-
perature would negatively affect the volume and quality of the
treated oil.
5. There is a good potential of treating this oil without any
heating aid, as the treater size required seems to be practical.
6. A practical and economical selection would be an 84-in.-
diameter by 21-ft-long coalescing section with a burner that can

provide a treating temperature of 105 F.
Now use Eq. (9) to calculate the heat requirement, assuming 10% heat
losses:
1
q ¼ 15Q ð TÞ
c þ w
cð o o w w Þ
o
1 l
1
ð
q ¼ 15 7000ð105 85Þ 0:86 0:5 þ 0:15 1:06 1:1Þ
1 0:1
¼ 1; 411,433 Btu=h
Therefore, a burner rated at 1.5 MM Btu/h would be a good selection.
It should be noted that after the installation of the treater in the field,
the operator will run the treater at various settings while inspecting samples

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