Page 114 - Pipeline Rules of Thumb Handbook

Pipe Design 101

¥
.
.
Weights in other units are found by multiplying by conver- 55 35 1 609 = 89 058km
.
sion factors:
3. How many bbl are in (a) 150ft? (b) gal? (c) cuft?
.
BBL MI = 5 129131 ( D - 2 T) 2
a. 150/5,280 ¥ 738.595 = 20.983bbl
b. 150/100 ¥ 587.519 = 881.279gal
Basic velocity relation:
c. 150/5,280 ¥ 4,146.902 = 117.810cuft
BBL BBL MI
∏ = 4. Suppose, in an emergency, you have to dig a pit to hold
HR MI HR oil from 150m of this 12-in. line. Volume? (a) cum (b)
cuft
This is converted to other units.
a. 150/1,000 ¥ 72.966 = 10.945cum
Example 1. Size 25, Fix 3, Set user mode. Put PWCV in b. 10.945 ¥ 34.315 = 386.519cuft
calculator. XEQ PWCV. Input 12.75in. Press run key. See
Pipe T in.? Input 0.375. Press run key. After calculator stops, 5. How long will it take a scraper to traverse 67.85mi of
press “A” for content. If velocities are desired, press “B.” this 12-in. line at 4,000bbl/hr?
Input 4,000BBL/HR. Press run key. Results are printed.
67.85/5.351 = 12.680hrs Hours min. sec? Fix 4.
Now “B” can be run as often as needed.
Change feed rate units. Note zeros were put in for three XEQ Alpha HMS Alpha = 12HR 40MIN 48SEC
3
feed rates, and 635.948M /HR input was keyed in. This is to
demonstrate how other feed rates are input and the accuracy
of the conversions (6 decimals). Put in feed rate 96,000BPD. Useful conversions
Enter, divide by 24, press run key.
Meters ¥ 3.281 = feet
Miles ¥ 1.609 = kilometers
Example 2. This shows how to input OD and T in MM.
Key in 0 for pipe OD IN.? Then press run key. See Pipe OD Cubic ft ¥ 7.481 = gallon (U.S.)
MM? Key in metric units. Results are calculated and printed. Kilogram ¥ 2.205 = pounds
Cubic meters ¥ 35.315 = cubic feet
Cubic meters ¥ 6.290 = barrels
Cubic meters ¥ 264.172 = gallons (U.S.)
Questions and answers
Barrels ¥ 5.615 = cubic feet
Barrels ¥ 42.00 = gallons (U.S.)
1. How many short tons are in a 55.35-mi segment of
12.75in. ¥ 0.375in. WT? (Use data from Ex. 1.) Barrels ¥ 35.00 = Imperial gallons

¥
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55 35 130 843 7 242 160ST Source
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,
=
.
2. How many km are in this segment above? Pipe Line Industry, May 1986.

Formulas and constants of value in solving problems relating to tubular goods

Area of Metal in Tubular Section: where B 100 = Barrels per 100ft
A = Internal area of pipe, in. 2
Area in square inches = 3.1416(D - t)t D = Internal diameter, in.
where D = Outside diameter, in. 808 5 1 029 4
.
.
,
and F B = =
t = Wall thickness, in. A D 2
Capacity where F B = Number of feet filled by one barrel
A = Internal area of pipe, in. 2
B 100 = .1237A = .0972D 2 D = Internal diameter, in.