Converting from Pound to Barrels
Converting from Pound to Barrels
(OP)
Below I have two scenarios, both expressing a volume in cubic feet to pounds then expressing the pounds in barrels of oil equivalent, or something like that.
Volume of Crude spilled = 400 ft^3 in five mins
Crude density 58 lbs/ft^3
Is the Pounds to barrels conversion then 23,200/(58*5.61504424778761)??
*******************************************************
Volume of LPG (Gas State) spilled = 4000 ft^3 per 7 mins
LPG(Gas State)density @ 1014.7 psia is 10.54 lbs/ft^3.
NOTE: At standard condition Density of LPG (gas state) around .1530
Is the Pounds to barrels conversion then 42,160/(10.54*5.61504424778761)??
NOTE the factor 5.61504424778761 comes from http://www.mechengcalculations.com/jmm/uni01.html
Refer to the Density portion of the site. As a result multiplying my density times this factor should tell me how many pounds I have per barrel.
Volume of Crude spilled = 400 ft^3 in five mins
Crude density 58 lbs/ft^3
Is the Pounds to barrels conversion then 23,200/(58*5.61504424778761)??
*******************************************************
Volume of LPG (Gas State) spilled = 4000 ft^3 per 7 mins
LPG(Gas State)density @ 1014.7 psia is 10.54 lbs/ft^3.
NOTE: At standard condition Density of LPG (gas state) around .1530
Is the Pounds to barrels conversion then 42,160/(10.54*5.61504424778761)??
NOTE the factor 5.61504424778761 comes from http://www.mechengcalculations.com/jmm/uni01.html
Refer to the Density portion of the site. As a result multiplying my density times this factor should tell me how many pounds I have per barrel.





RE: Converting from Pound to Barrels
mass = 400ft^3 * 58 lbm/ft^3 = 23,200 lbm
Vol = 400ft^3 * 7.481 gal/ft^3 *bbl/42 gal = 400 ft^3 *bbl/5.615 ft^3 = 71.243 bbl (notice that the mass doesn't play here)
The 5.615 number is volume to volume, nothing to do with mass or density. 1 bbl=5.615 ft^3.
You stated the density in the pressurized case as a gas? I'm pretty sure the "L" is liquified. You need that density to get to a spilled mass, then using the STP density you can calculate the SCF that was vaporized. Just a guess, but it seems like it would be 16/18 * 63.4 lbm/ft^3 or 55.5 lbm/ft^3.
David
David
RE: Converting from Pound to Barrels
by the way thanks zdas04
RE: Converting from Pound to Barrels
It seems the formula in my orig post produces the same results as the ones which I've received, which is a good thing. I guess the problem I have now is that the gaseous state of my Highly Volatile Liquid is producing high bbls amount. I'm attempting to model a spill from a full line rupture for LPG, 3 mins at liquid phase and 7 mins at gaseous phase. I would like to express both results in bbls so I can bring both sums together.
RE: Converting from Pound to Barrels
BOE = 271.9 MSCF * 1.01 MMBTU/MSCF * BOE/5.8 MMBTU = 47.3 bbl Oil Energy Equivilent
Is that close to your answer?
You can also do a mass to mass comparison:
LNG = 4000 ft^3 * 10.54 lbm/ft^3 = 42,160 lbm
Oil = 400 ft^3 * 58 lbm/ft^3 = 23,200 lbm
As you can see this is a very different number (LNG is 40% of the energy or 64% of the mass). Either answer is "right", but they both require serious qualifications.
David
RE: Converting from Pound to Barrels
RE: Converting from Pound to Barrels
Thanks in advance
RE: Converting from Pound to Barrels
HHV is "Higher Heating Value" or "Gross Heating Value" which is a conversion from a volume at standard conditrions to an amount of usable heat. If you are going to be doing much of this kind of work I would highly recommend buying the GPSA Field Data Book which just has a wealth of that kind of information.
David
RE: Converting from Pound to Barrels