Page 455 - Handbook Of Multiphase Flow Assurance

CHAPTER
14

Case studies/reference material

OUTLINE

PVT gas properties 455 Advanced flow assurance fluid properties 463
Abbreviations and definitions 460 Flow correlations 464

Regulatory requirements and Monitoring and instrumentation for
environmental law which flow assurance 465
may affect flow assurance 460
Units and conversions 465
Pipe roughness 463
Standard temperature and pressure 467
Sample requirements 463

PVT gas properties

We present several tables with properties evaluated with PR78 EoS for methane, lean gas, rich
gas and retrograde gas as shown in Tables 14.1–14.4. The properties include density, viscosity
and Z-factor for compressibility, and aim both to illustrate how these properties vary in different
fluid types and to serve as initial estimate values for a gas of similar gravity. Gas gravity is rela-
3
tive to air density 1.225 kg/m .
Methane, gravity = 0.554.
Lean gas, gravity = 0.588.
Components: nitrogen, H 2 S, methane, ethane, propane, hexane;
4.283, 0.0001, 92.41, 3.242, 0.036, 0.023 mol
Rich gas, gravity = 0.995.
Components: nitrogen, CO 2 , H 2 S, methane, ethane, propane, iC 4 , nC 4 , iC 5 , nC 5 , hexane, heptane;
0.13, 3.5, 4.9, 46.4, 21.4, 16.9, 1.8, 3.8, 0.49, 0.47, 0.16, 0.003 mol
Gas from volatile oil/retrograde condensate, gravity = 0.787.
Components: nitrogen, CO 2 , methane, ethane, propane, iC 4 , nC 4 , iC 5 , nC 5 , hexane, heptane;
0.93, 0.32, 71.9, 14.4, 7.6, 0.82, 2.2, 0.47, 0.6, 0.42, 0.2, 0.05 mol

Handbook of Multiphase Flow Assurance 455 © 2019 Elsevier Inc. All rights reserved.
https://doi.org/10.1016/B978-0-12-813062-9.00014-2