Drilling and Reservoir EngineeringGas and Gas Condensate Reservoir Engineering
When pressure in a gas condensate reservoir drops below the dew point, liquid drops out near the wellbore, choking productivity and leaving the most valuable components behind in the rock. Dry gas fields bring their own pitfalls. Delegates begin with gas properties, real gas behaviour and the z factor, then estimate gas in place by volumetric and p/z methods, including abnormally pressured and water drive cases. Deliverability testing and backpressure equations follow. Condensate behaviour is then treated in depth: retrograde condensation, condensate banking, velocity stripping and compositional simulation. Gas cycling and pressure maintenance are covered as recovery strategies, with relevance to developments such as those offshore Mozambique and Tanzania. Delegates leave able to estimate gas reserves, forecast deliverability and manage condensate dropout.
Course objectives
- Calculate gas properties including z factor, formation volume factor and viscosity
- Estimate gas in place with volumetric and p/z material balance methods
- Recognise water drive and overpressure effects on gas material balance
- Analyse deliverability tests using backpressure and laminar inertial methods
- Explain retrograde condensation and condensate banking
- Evaluate strategies such as gas cycling to limit liquid dropout
- Forecast gas and condensate production for contract planning
Who should attend
- Reservoir engineers working gas fields
- Gas field development planners
- Production engineers
- Gas marketing and contracts staff needing deliverability forecasts
- Regulators of gas resources
Course outline
- 01Natural gas properties
- 02Gas in place estimation
- 03Gas material balance
- 04Water drive and abnormal pressure
- 05Deliverability testing
- 06Gas condensate phase behaviour
- 07Condensate banking near the wellbore
- 08Gas cycling and pressure maintenance
- 09Forecasting for gas sales
Scheduled sessions
| Dates | Venue | Format | Price | Register |
|---|---|---|---|---|
| 2 to 6 November 2026 | Kampala, Uganda | Classroom | USD 1,325 per delegate | |
| 16 to 20 November 2026 | Gaborone, Botswana | Classroom | R19,950 per delegate | |
| 21 to 25 December 2026 | Johannesburg, South Africa | Classroom | R19,950 per delegate | |
| 28 December 2026 to 1 January 2027 | Online | Online | R8,500 per delegate |
Gas and Gas Condensate Reservoir Engineering
From R8,500