Natural Gas Engineering
Natural gas engineering from first principles: gas composition and phase behaviour, real-gas properties and the z-factor, volumetric and p/z material balance, water influx and overpressure, deliverability and well testing with pseudo-pressure, gas condensate and wet gas reservoirs, tight and shale gas type wells, dehydration and hydrates, sour gas treating, sulphur and NGL recovery, pipelines, compression and LNG, and a field development plan for a liquids-rich Montney gas project in British Columbia.
PET-440 Year 4 3 credits 12 lessons · 3 h 55 min ▶ Video lessons coming soon
Offered by HSM University · Petroleum Engineering
This is the Canadian version of this course. See the American version.
What you'll learn
- Describe natural gas composition, compute molar mass, gas gravity, pseudo-critical properties and heating value, and classify reservoir gases by phase behaviour.
- Calculate z-factors, formation volume factors, densities, viscosities and compressibilities of natural gases with standard correlations.
- Estimate original gas in place by volumetrics and p/z material balance and explain differences between the two.
- Recognize and model water influx and abnormal pressure in gas material balance, and judge their effect on recovery.
- Analyse gas well deliverability tests with the back-pressure and LIT equations and relate inflow to tubing performance and liquid loading.
- Interpret gas well tests with pseudo-pressure, separating mechanical skin from non-Darcy skin, and identify flow regimes.
- Recombine wet gas and gas condensate streams and evaluate retrograde condensation, condensate banking and gas cycling.
- Estimate gas in place in tight and shale reservoirs, including adsorbed gas, and build type wells with modified hyperbolic declines.
- Calculate water content, design glycol dehydration and estimate hydrate inhibitor requirements.
- Select acid gas treating, sulphur recovery and NGL recovery processes and estimate their key rates.
- Size gas pipelines and compressors and apply pipeline design codes, and explain the role of LNG in gas markets.
- Assemble a gas field development plan with production forecast, facilities, economics, sensitivities and a phased decision.
Course content
12 lessons · 3 h 55 min total · final exam
- 1 Natural gas composition and phase behaviour 24 min · quiz
- 2 Real-gas properties and the z-factor 18 min · quiz
- 3 Gas in place and material balance 19 min · quiz
- 4 Water influx and abnormally pressured reservoirs 22 min · quiz
- 5 Gas well deliverability 19 min · quiz
- 6 Gas well testing and pseudo-pressure 18 min · quiz
- 7 Gas condensate and wet gas reservoirs 19 min · quiz
- 8 Tight and shale gas 19 min · quiz
- 9 Gas processing: dehydration and hydrates 19 min · quiz
- 10 Gas sweetening and NGL recovery 19 min · quiz
- 11 Pipelines, compression and LNG 19 min · quiz
- 12 Capstone: a gas field development plan 20 min · quiz
- E Final exam 20 questions
Requirements
Recommended background. You can start any course at any time.
Description
Natural gas engineering from first principles: gas composition and phase behaviour, real-gas properties and the z-factor, volumetric and p/z material balance, water influx and overpressure, deliverability and well testing with pseudo-pressure, gas condensate and wet gas reservoirs, tight and shale gas type wells, dehydration and hydrates, sour gas treating, sulphur and NGL recovery, pipelines, compression and LNG, and a field development plan for a liquids-rich Montney gas project in British Columbia.
Part of the Engineering stream, typically taken in year 4.