Page 48 - Handbook Of Multiphase Flow Assurance

CHAPTER
3

PVT and rheology investigation

OUTLINE

Phase behavior 43 Fluid characterization 52
Viscosity 56
Fluid sampling 44 Lumping for different fluids 56
Onshore vs deepwater 44 Solid-liquid equilibrium 57
Special considerations for H 2 S samples 44 Additional laboratory studies 59
Special considerations for mercury samples 44 PVT tuning 60
Sampling hydrocarbon fluid 45
Fluid physical properties 61
Quality of fluid samples 45
Oil sample quality checks 45 Non-Newtonian behavior 63
Hydrocarbon fluid sample quality checks 45 Emulsion characteristics 64
Water sample quality checks 50
Biodegradation 65
Drilling and wellwork fluids formulation
and safety 51 References 65
Fluid characterization 51 Further reading 66
Fluid properties and measurements 51

This chapter is at the beginning of the book because thermodynamic fluid characterization
also known as PVT represents the third most important characteristic of petroleum produc-
tion after reservoir characterization and well drilling, and the most important one for flow
assurance and for production chemistry. Good understanding of fluid properties allows a
flow assurance engineer to develop a technically feasible and economically optimal set of
strategies to overcome a variety of problems listed in the first two chapters.

Phase behavior

Flow assurance analyzes the flow of fluids and associated solids at a range of pressure and
temperature conditions. Properties of fluids vary with both temperature and pressure.

Handbook of Multiphase Flow Assurance 43 © 2019 Elsevier Inc. All rights reserved.
https://doi.org/10.1016/B978-0-12-813062-9.00003-8