Mixing of Crude oils with condensate in a pipeline
Mixing of Crude oils with condensate in a pipeline
(OP)
Hello All,
The issue I'm currently facing is how to show that a crude Oil pipeline, 24" OD, when it has a side stream of another crude oil (condensate) injected into it via a simple tee connection will mix effectively. My "understanding" is that after 1-2km at most, this continuous injection should be fully homogenised and the resultant mixture is a true mixture and not subject to separation or distinct flow patterns. Flow in the pipeline is fully turbulent and has a velocity around 1 to 1.5m/sec.
I've looked here and elsewhere for a more "technical" answer and something which has been undertaken which can be referenced (papers, data etc) but I'm struggling to find this continuous mixing issue as opposed to the more common interface issue. We could add an inline mixer, but this entails more expense and the injection is into a piggable part of the pipe line. The injection amount is around 10%, but we also need to determine if there is a maximum amount that can be mixed and how long (distance wise) it takes.
Any assistance gratefully received as I'm sure it must have been studied and looked at before as dilution or spiking of a more viscous Crude oil by a diluent is quite common.
Any more questions I'll try and answer.
Thanks, LI
The issue I'm currently facing is how to show that a crude Oil pipeline, 24" OD, when it has a side stream of another crude oil (condensate) injected into it via a simple tee connection will mix effectively. My "understanding" is that after 1-2km at most, this continuous injection should be fully homogenised and the resultant mixture is a true mixture and not subject to separation or distinct flow patterns. Flow in the pipeline is fully turbulent and has a velocity around 1 to 1.5m/sec.
I've looked here and elsewhere for a more "technical" answer and something which has been undertaken which can be referenced (papers, data etc) but I'm struggling to find this continuous mixing issue as opposed to the more common interface issue. We could add an inline mixer, but this entails more expense and the injection is into a piggable part of the pipe line. The injection amount is around 10%, but we also need to determine if there is a maximum amount that can be mixed and how long (distance wise) it takes.
Any assistance gratefully received as I'm sure it must have been studied and looked at before as dilution or spiking of a more viscous Crude oil by a diluent is quite common.
Any more questions I'll try and answer.
Thanks, LI
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way





RE: Mixing of Crude oils with condensate in a pipeline
RE: Mixing of Crude oils with condensate in a pipeline
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Mixing of Crude oils with condensate in a pipeline
RE: Mixing of Crude oils with condensate in a pipeline
Any experience of Dilbit mixing would be good if anyone can share this as the crude is very waxy.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Mixing of Crude oils with condensate in a pipeline
Learn from the mistakes of others. You don't have time to make them all yourself.
RE: Mixing of Crude oils with condensate in a pipeline
Learn from the mistakes of others. You don't have time to make them all yourself.
RE: Mixing of Crude oils with condensate in a pipeline
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Mixing of Crude oils with condensate in a pipeline
Learn from the mistakes of others. You don't have time to make them all yourself.
RE: Mixing of Crude oils with condensate in a pipeline
OCTAVE LEVENSPIEL
There is a paper from him on longitudinal mixing in pipe which I found here
http://pubs.acs.org/doi/pdf/10.1021/ie50579a034
Unfortunately I could access only the front page maybe this can be a reference.
RE: Mixing of Crude oils with condensate in a pipeline
Thanks very much, that looks like exactly what I need - am now tracking it down.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way