Training schedule

Lecturers Konstantin Rymarenko Marat Nukhaev

5 days

About the course
Gas lift is one of the most widely used artificial lift techniques. Participants will investigate the impact of tubing sizing, gas lift valve selection, gas lift mandrel spacing, gas lift valve design, casing pressure, surface choke size, gas volume, etc., on well design and operation. Participants will practice mandrel spacing design and gas lift valve design, surveillance, and optimization at the well and field level.

The course is designed for production engineers and operations staff responsible for designing gas lift installations and/ or performing surveillance and optimization on wells using gas lift.

• Introduction to Gaslift class.
• Review of artificial lift methods: rod pumps, ESPs; jet pumps; PCPs. Basics of gaslift.
• Reservoir fluid properties.
• Well productivity. Darcy’s law. Skin calculation.
• Inflow performance relationship. Vogel IPR curve. Combined IPR. Composite IPR.

• Gas lift equipment.
• Gas lift mandrels (Conventional and Retrievable).
• Gas lift valves (IPO, PPO, orifice). Valve mechanics. Valve selection and calibration.
• Latches. Kickover tools.
• Surface gas lift equipment.

• Gas laws applied to gas lift.
• Gas injection pressure at depth.
• Gas volume stored within conduit.
• Temperature effect.
• Gas passage through valve.
• Flow correlations. Multiphase flow. Flow regimes.
• Pressure loss in wellbore.
• Nodal analysis.
• Outflow performance.

• Types of gas lift (traditional, natural, inside wellbore, periodical).
• Unloading of gas lift wells.
• Mandrel spacing and step-by-step, complete gas lift design for a well.
• Orifice sizing techniques.
• Lift gas rates for best economics.
• Causes and solutions of instability.

• Gas lift surveillance and measurement.
• Analysis of flowing pressure gradient surveys.
• Analysis of GL surface charts and measurements.
• Gas allocation and field optimization.
• Gas lift troubleshooting and optimization.