Welltec® Expandable Anchor (WEA) for Liner Hanger

The Welltec® Expandable Anchor (WEA) for Liner Hanger is qualified for life-of-well and delivers a robust system with maximum running clearance. Surface-controlled hydraulic expansion delivers compliance to damaged or deformed casings while ensuring bidirectional anchoring and sealing.

When installed as part of Welltec lower completion solutions, WEA for Liner Hanger delivers a low cost and efficient lower liner solution.

The Welltec® Expandable Anchor (WEA) for Liner Hanger is run in combination with a Metal Expandable Packer (MEP), the proven hydraulic expansion sleeve. The rapid application of surface-controlled pressure simultaneously expands the WEA and the MEP system, offering an efficient alternative to conventional liner hanger solutions. The slim running OD maximizes clearance to have minimal impact on ECD during fluid circulation of cementing operations.

This solution is qualified in accordance with the highest-level API 19LH-V1 and ISO 14130-V0 standards. Moreover, this combination minimizes subcomponents and moving parts delivering a robust system for the most demanding environments, and maintains the ability to circulate, rotate and work down the liner to maximize the ability to reach the target setting depth.

The WEA for Liner Hanger is based on proven metal hydraulic expansion sleeve that has established a global track record in all well types. Whilst approximately 50% of the metal expansion sleeve systems provided have been deployed within cement, there are many commercial and environmental gains for the industry when deployed cementless. The many benefits of cementless liners are being realized, with cement manufacture and cement implementation seen as a main contributor to CO2 emissions and a primary barrier to clients achieving their Net Zero targets.