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Pressure-Depth Plots

Pressure-Depth Plots

Pressure-Depth Plots

(OP)
Hi,

I am wondering what causes the slope to change when an oil-water contact occurs on a pressure-depth plot. the oil has a certain slope and the water has a certain slope and when they meet, a difference in slopes is seen. why is that? i'm thinking it involves Bernoulli but I'm not sure!

Thanks in advance for any help!  

RE: Pressure-Depth Plots

Different pressure gradients result from different fluid densities.  Water:  0.447psi/ft oil: say 0.3psi/ ft.....

RE: Pressure-Depth Plots

DrillerNic is a lot nicer than I would have been.  The statement

Quote (jbmun):

i'm thinking it involves Bernoulli but I'm not sure!
Should have gotten you flamed.
Some thought is required in posing a question that doesn't show your total lack of understanding of the basic principles of your profession.  You really should write the static gradient equation and Bernoulli's equation on a sheet of paper and try to figure out what one has to do with the other and what either has to do with your question.  I'll give you a hint, the density in the gradient equation is not an effective density it is a product density.

David

RE: Pressure-Depth Plots

David I just remember there are no stupid questions, only stupid answers...

Although my answer to the question "what the f**k are you doing with that hose?" on my first ever hitch was pretty dumb:
"I'm filling up the moonpool!"

Certainly beats looking for the key to the V door, eh?

RE: Pressure-Depth Plots

You really should write the static gradient equation and Bernoulli's equation on a sheet of paper and try to figure out what one has to do  

Eng Tips Rocks

thanks,
kk
http://cubuilt.com

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