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PVT and Flow course - Single Component Vapor Pressure.
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Pressure - Temperature diagram is a map of the pressure temperature space where you'll find one phase, we might be calling it an oil (liquid) or a gas (vapor) and the PT space where two phases or both oil and gas coexist.
Pure Component Phase Diagram
The line separating the liquid and gas regions is called the vapor pressure curve or boiling point curve. And it is along this line where you have the two phases and everywhere outside that line it's single phase. But the amount of the second phase could be so small that you would never really see it.
But on the Pressure-Volume diagram there is an envelope. And inside this envelope there is a 2 phase region.
Mother nature won't allow you to change the pressure until you get rid of one of the phases. When you get rid of the one of the phases, then the pressure starts dropping. This behavior only works for pure compounds.
Watch the full video
Other lectures from the PVT and Flow course
- Blog:PVT and Flow course - Gas or Oil Reservoir?
- Blog:PVT and Flow course - Single Component Vapor Pressure.
- Blog:PVT and Flow course - Two-Component Phase Behavior
- Blog:PVT and Flow course - Multi-Component Phase Diagrams
- Blog:PVT and Flow course - K Values
- Blog:PVT and Flow course - Flash Calculations
- Blog:PVT and Flow_course - Surface Separation Processing
- Blog:PVT and Flow course - Sampling
- Blog:PVT and Flow course - PVT Lab Tests
- Blog:PVT and Flow course - OBM Decontamination
- Blog:PVT and Flow course - Lab PVT Tests CCE
- Blog:PVT and Flow course - LAB PVT Tests Multistage SEP
- Blog:PVT and Flow course - Lab PVT Tests DLE
- Blog:PVT and Flow course - Lab PVT Tests CVD
- Blog:PVT and Flow course - Black-Oil PVT
- Blog:PVT and Flow course - Rate Equation (Darcy) Intro
Class notes developed during lectures are available as PDF files, named with the format yyyymmdd.pdf located on: http://www.ipt.ntnu.no/~curtis/courses/PVT-Flow/2016-TPG4145/ClassNotes/
See also
Fluid#Pure_Component_Phase_Diagram
Curtis Whitson Petroleum Engineering Videos
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