Gas Reservoir Engineering and Management

Overview

Gas reservoirs behave very differently from oil reservoirs. Gas is highly compressible, recovery depends strongly on abandonment pressure and water influx, and wells can lose deliverability through liquid loading, condensate banking or non-Darcy flow long before the reservoir is depleted. With gas demand growing across the Gulf for power, petrochemicals and LNG, engineers who can estimate gas in place accurately and maximise recovery are in high demand. This course covers gas reservoir engineering from fundamentals to field management. Participants learn gas properties and real gas behaviour, volumetric estimates, material balance and p/z analysis for volumetric and water-drive reservoirs, and gas well deliverability testing. The course then covers decline analysis, liquid loading and its remedies, compression and infill drilling, and gas condensate and tight gas considerations, ending with how to build a gas field development and depletion plan.

Objectives

• Calculate gas properties and real gas behaviour
• Estimate gas initially in place by volumetric and material balance methods
• Interpret p/z plots and detect water influx
• Analyse gas well deliverability and non-Darcy flow
• Diagnose and remedy liquid loading
• Evaluate compression, infill drilling and other recovery options
• Recognise the special behaviour of gas condensate and tight gas reservoirs
• Build a gas field depletion plan

Who should attend

Training methodology

Calculation exercises run throughout the course using data from a sample gas field: gas properties, volumetrics, p/z analysis, deliverability tests and decline curves. Participants build a simple material balance model in a spreadsheet and test the effect of water influx and compression. Production data from wells with liquid loading are diagnosed in groups, and remedies are compared on cost and benefit. The course closes with a team depletion plan presented for review.

Programme outline

Dates and fees

Certificate

Frequently asked questions