Adaptive Gas Lift System
Unlock efficiency with the AGLS: elevate your production without intervention.
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The Product
The Adaptive Gas Lift System (AGLS)
The Adaptive Gas Lift System (AGLS) is a retrievable digital gas lift system that primarily utilises field-proven technology. AGLS is the world’s first electric gas lift system qualified to internationally recognised standards. It is based on industry-leading Interwell Gas-Lift technology and Emerson’s Roxar Integrated Downhole Network and sensor technology.
System Specifications
- Designed and qualified to API 19G1 (V1), 19G2 (V0) and AWES 3362-36
- Temperature range: 4-150°C (39-302°F)
- Valve working pressure: 10 000 psi (686 bar), 15 000 psi (1034 bar) absolute
- Adjustable variable choke allows fractional port size variation from 10/64”-32/64”
- The Side Pocket Mandrels accept both electric and conventional Gas Lift Valves (1.5”)
- Set and retrieved using conventional wireline methods
- Run on a single TEC line, up to 32 nodes on an Emerson Electric network
- 4.5” and 5.5” mandrels in 9 5/8” casing
- Other sizes can be made available upon request
Application
Conventional gas lift systems are designed to optimise the initial production phase when tubing pressure is high. However, as production conditions change over time, adjustments to the orifice size and injection depth are required to maintain efficiency. Closing each injection pressure operated (IPO) valve requires a drop in casing pressure, which can limit the injection depth and potentially reduce additional production. Manipulating casing pressure and dealing with IPO temperature uncertainties often leads to multi-pointing, resulting in ineffective gas lift and loss of production.
Well interventions are expensive and can be particularly challenging if the well has flow assurance issues. These issues can complicate valve retrieval, leading to additional downtime and increased operating expenses (OPEX).
The Adaptive Gas Lift System offers the ability to adjust port size and change the injection depth to deliver optimal injection rates as well conditions change. This adaptability addresses future uncertainties in modeled reservoir conditions. Deeper injection is possible as the valves can be closed without reduction of casing pressure. Continuous online optimisation throughout the life of the field maximises production and reduces project payback time. Furthermore, AGLS reduces the instability associated with conventional gas-lift systems by optimising the injection rate and port size.
AGLS is compatible with e-field and i-field technologies, offering the potential for autonomous production optimisation.
Key Benefits
- Maximise injection depth
- Variable orifice adjustment
- Remote control & adjustment
- Avoid premature opening of valves
- Online adjustments avoid interventions to perform orifice adjustments
- Improved drainage of reservoir
- Prolonged lifetime of well
- Accelerated production
- Avoid carbon footprint associated with interventions
- Improved utilisation of available gas, reducing CO2 per barrel