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Example 1
For a lease consisting of five producing wells, each with an average
production capacity of 10,000 bbl/day, find the approximate total storage
capacity and the number of storage tanks.
Solution
Using rule a,
Capacity or the size of one tank ¼ 2 3 days of oil production/well
¼ð2:5Þð10,000Þ
¼ 25,000 bbl=well
Now, for five wells,
Total storage capacity ¼ð5Þð25,000Þ
¼ 125,000 bbl
Using correlation,
Storage capacity for the entire lease ¼ 3 4 days of oil
production by lease
¼ð3:5Þð50,000Þ
¼ 175,000 bbl
Conclusions:
The number of storage tanks according to rule a is 125,000/
25,000 ¼ 5 tanks
The number of storage tanks according to rule b, assuming storage
capacity per tank the same as computed in rule a is 175,000/
25,000 ¼ 7 tanks
Finally, the number of storage tanks as computed graphically, using Figure
2 is 4. Now, comparing the results obtained, the appropriate number of
storage tanks required by the lease is five to six.
8.2 VAPOR RECOVERY UNITS
8.2.1 Background
The loss of hydrocarbon vapors formed above crude oil or its products—
when stored—could be minimized using what is called vapor recovery
units (VRUs). If allowed to escape to the atmosphere, these vapors will
Copyright 2003 by Marcel Dekker, Inc. All Rights Reserved.
