This practical course will provide attendees with a working knowledge of Pressure Volume Temperature (PVT) and Equation of State (EOS) theory and their applications, following a path from field sampling to the lab and on to the examination of common practices and analyses used in classical and simulated reservoir engineering.
- Understand the field separation process and sampling procedures
- Identify fluid types and their phase behavior.
- Select methods of sampling at the well site location.
- Learn how to read PVT lab reports for DLE, CCE, CVD.
- Construct black oil PVT tables for volumetrics and simulation models.
- Explain why and how the Equation of State (EOS) was developed.
1. Review of basic volumetric properties
2. Sampling of multi-stage fluid separation in the field
3. PVT fluid sample validation and recombination in the lab
a. Sampling recommendations
b. Lab validation for sample equilibrium
c. Recombination of fluid samples
4. PVT lab experiments
a. Constant Composition Expansion (CCE or CME)
b. Constant Volume Depletion (CVD)
i. Difference between condensate yield and gas liquids
ii. Heating values of gas liquids
c. Differential Liberation Expansion (DLE)
i. Lab measurements
ii. Multi-separator tests
iii. Correcting lab results to surface separation conditions
5. Black oil PVT correlations
a. Determining volumetrics without the need for an equation of state
b. Limitations in its application
6. Fundamental concepts of Equation of State (EOS)
a. Principles of PVT and EOS for:
i. Ideal gases
ii. Real gases
b. Single and multi-component diagrams
i. Phase diagram (pressure vs temperature)
ii. Pressure-Volume diagram (pressure vs specific volume)
c. The five reservoir fluid types
i. How to identify
ii. The importance of understanding the difference
d. What can be achieved with EOS
e. The progression of EOS development and its importance
i. van der Waals
ii. Redlich Kwong
iii. Soave Redlich Kwong (SRK)
iv. Ping Robinson (PR)
v. Katz Firoozabadi and Prausnitz
vi. Peneloux et al
f. The fundamentals of tuning an EOS to the lab data
g. The three QC tests for a valid EOS