Page 150 - Petroleum and Gas Field Processing

Use Eq. (26) to determine the relation between the diameter and liquid
height for retention time constraint:

2 3
ðH o þ H w ÞD ¼ 8:576ðQ o t o þ Q w t w Þ in:
¼ 8:576 ð6000 10 þ 3000 10Þ
¼ 771,840 in: 3 ðE3Þ

D (in.) H o þ H w (in.) L s (ft) 12L s /d
90 95.289 18.774 2.50
96 83.750 18.312 2.29
102 74.187 18.016 2.12
108 66.173 17.848 1.98
114 59.391 17.783 1.87
120 53.600 17.800 1.78
132 44.298 18.025 1.64
144 37.222 18.4351 1.54

For diameters larger than 89.57 in., use Eq. (E3) to determine the value of
H o þ H w ; then, calculate the corresponding values of the seam-to-seam
length from Eq. (27) and, finally, calculate the corresponding slenderness
ratio. The results are summarized in the preceding table:
All combinations of diameter and seam-to-seam length in the above
table are acceptable because the slenderness ratio falls between 1.5 and 3 for
all of them. The final selection would, therefore, depend on cost and
availability. A 96-in. by 19-ft separator is probably the best choice.

BIBLIOGRAPHY

Abdel-Aal, H. K., Surface Petroleum Operations, Saudi Publishing & Distributing
House, Jeddah, 1998.
Arnold, K., and Stewart, M., Surface Production Operations, 2nd ed., 1998. Gulf
Publishing Company, Houston, TX.
Berger, B. D., and Anderson, K. E., Modern Petroleum: A Basic Primer of the
Industry, 2nd ed., 1981. PennWell Publishing, Tulsa, OK.
Chilingarian, G. V., Robertson, J. O., Jr., and Kumar, S., Surface Operations in
Petroleum Production, I, 1987, Elsevier Science, Amsterdam.
Craft, B. C., Holden, W. R., and Graves, E. D., Well Design: Drilling and
Production, 1962, Prentice-Hall, Englewood Cliffs, NJ.
Donohue, D. A. T., and Taylor, R. W., Petroleum Technology, 1986, IHRDC,
Boston.

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