Gas Lift Engineering for Production Engineers Training Course

Course Overview

Learning Objectives

• By the end of the course, participants will be able to:
• Explain how injected gas reduces the flowing gradient and how this sets the production response of a gas-lifted well.
• Construct gas lift performance curves and determine the economic injection rate and injection depth for a well.
• Describe the components of the surface and subsurface gas lift system, including mandrels, valves and injection controls.
• Analyze the force balance of injection-pressure operated and production-pressure operated gas lift valves.
• Calculate valve opening and closing pressures, temperature-corrected dome pressures and test rack settings.
• Estimate gas passage through valve ports and orifices under critical and subcritical flow conditions.
• Design valve spacing and unloading sequences for continuous gas lift under changing well conditions.
• Interpret flowing pressure and temperature surveys together with casing and tubing pressure records.
• Diagnose multipointing, heading, valve failures, tubing leaks and injection gas supply problems.
• Allocate limited injection gas across wells and gathering networks to maximize field oil production.
• Apply design and operating principles for dual and intermittent gas lift completions.
• Develop surveillance routines and corrective action plans for gas-lifted wells.

Who Should Attend

Learning Outcomes

• Upon completion of the course, participants will be able to:
• Explain how gas injection changes flowing gradients and well deliverability.
• Construct and use gas lift performance curves to set injection rates.
• Determine the injection depth and the point of balance for a well.
• Describe the function of mandrels, valves, and surface injection equipment.
• Calculate opening, closing, and test rack pressures for gas lift valves.
• Size valve ports and orifices for the required gas throughput.
• Design unloading valve strings for continuous gas lift wells.
• Plan unloading procedures that protect valves from erosion and damage.
• Interpret flowing surveys and casing and tubing pressure records.
• Diagnose multipointing, heading, valve failures, and tubing leaks.
• Allocate limited injection gas to maximize field oil production.
• Evaluate network and compression constraints on gas lift performance.
• Apply design principles for dual and intermittent gas lift.
• Establish surveillance and redesign routines for gas-lifted wells.

Course Outline