pour point and molecular weight of crude oil!

[mrswax]

Hello to all,

I need to use equations to calculate the pour point and molecular weight for crude oil if have idea please help me?

thanks

 

[25362]

Your question needs clarifying, do you mean predicting product properties based on lab crude assays ?

 

[mrswax]

hi 25362,

infact I have sp.gravity and viscosity of crude oil and I need to use equations if it is possible to predict the pour point and molecular weight and make comparison between the two results. I hope my question is clear.

thanks

 

[25362]

I don't know of any valid algorithm to predict the pour or cloud point of petroleum oils as caused mainly by normal or slightly branched isoparaffins in the C₂₀-C₄₂ range, by using only gravity and viscosity.

For the relative molecular mass (molecular weight) one probably can get help from ASTM D2502-04. To characterize the crude, whether paraffinic or otherwise, one may use the VGC, viscosity-gravity constant.

For additional guidance you may visit some Google sites such as:

http://www.castdiv.org/archive/OnlineDataProcessing.pdf

http://www.epa.gov/chemrtk/crdoilct/c14858tp.pdf