Course code: H850POILGA
Module code: ME5623
Module mode of attendance: full-time
Start date: January
Credits: 15
Assessment: Assignment (100%)
Full course: A module from
- Oil and Gas Engineering MSc
Module details:
This module introduces the fundamentals of multiphase flows and issues related to flow assurance of hydrocarbon mixtures by introducing theory and predictive models for pressure drop, transition between flow patterns and heat transfer in two phase flows.
Indicative content:
1. Introductory concepts and flow patterns
Covers two and three phase flows and applications involving gas, oil, water and particle (sand) transport:
- Applications and appearance of two-phase flows
- Definitions
- Flow pattern maps, gas-liquid, liquid-liquid and gas-oil-water
- Effects of parameters such as fluid properties, pipe diameter and inclination on flow patterns
2. Models for predicting two-phase flows
Covers the various modelling approaches for predicting pressure drop, including:
- Equations for pressure drop
- Homogeneous flow model
- Empirical and phenomenological models
3. Flow pattern transitions and slugging
Transitions between the different patterns will be discussed and predictive models presented:
- Stratified-non-stratified flow transitions
- Transition to annular flow
- Transition to dispersed flow
- Phase inversion in liquid-liquid flows
3. Rheology of oil-water dispersions
Discussion on the rheological properties of two-phase mixtures, particularly liquid-liquid ones:
- Viscosity models for gas-liquid flows
- Viscosity models for liquid-liquid flows
4. Heat transfer in two-phase systems
Covers techniques to predict heat transfer rates in two-phase flow systems, including:
- Convection during two-phase flow
- Flow freezing and boiling
- Applications to sub-sea pipeline operations
5. Topics in flow assurance
- Overview of flow assurance.
- Fouling – waxing, hydrates, asphaltenes.
- Operations – normal and off-design operations: start-up, shut-in etc.
- General safety issues