The Welltec® Expandable Anchor (WEA) for Casedhole Plug

Anchoring in cased hole

Introduction

Applications

Temporary well abandonment, permanent well abandonment
Challenge

Well abandonment

The Welltec® Expandable Anchor (WEA) for Casedhole Plug provides a temporary or permanent abandonment solution with a qualified gas-tight seal. Surface-controlled hydraulic expansion ensures bidirectional anchoring and sealing.

The solution is qualified in accordance with the highest-level API and ISO standards.

The development of the WEA as a Casedhole Plug minimizes subcomponents, ensuring reliability and efficiency while simplifying well construction. The WEA enables reciprocation, circulation, and/or rotation during deployment.

The Welltec Expandable Anchor (WEA) for Casedhole Plug 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 casedhole plug solutions. The expansion sleeve hydraulically expands the bidirectional anchors, which uniformly engage with the ID of the outer casing. Increased loading/anchoring capacity is achieved via the modular addition of WEA sleeves. The slim running OD maximizes clearance to have minimal impact on ECD during fluid circulation of cementing operations.

Gallery

WEA Inner String And Casedhole 360 0000 (1)

360

Overview

The WEA is a single-piece machined sleeve, fully welded to a base pipe. The main anchor section is a machined slip that is mounted over the expansion sleeve.

The functionality and characteristics of the expansion sleeve are similar to that of Welltec’s metal expandable packer range. As the sleeve expands, the anchor rings engage with and grip the liner/casing ID. As the load is applied, the grip is increased, and increased load anchoring can be provided via additional sleeve assemblies.

The WEA range is fully compatible with Welltec® Metal Expandable Packers and WIV® technologies.

* Custom specifications and control line feedthrough options available on request.

Applications

Temporary well abandonment
Permanent well abandonment

Features

High expansion and bidirectional load capability
Rugged, all-welded, metallic construction
Design solutions to accommodate various fluid types and hydraulic requirements
Load capability independent of Delta P
NACE compliant

Benefits

Enables reciprocation, circulation, and/or rotation during deployment
Modular and compact design with high modular bidirectional load-carrying capability
Hydraulic expansion delivers compliance to damaged or deformed casings
Minimizes stress within deformed casing via even distribution of load
Reduced inventory – higher expansion capability covers multiple tubing grades
Slim running profile

Specifications*

Set within a tubular range	6 5/8” 13 5/8”
Base-pipe range up to	4 ½” 9 5/8”
Expansion range	5.75” 12.38”
Maximum running OD	5.6" 11.38”
ID	Full bore (as per base-pipe)
Qualification	API 19LH – V1
Expansion pressure while setting	4,500 psi 5,000 psi
Anchoring capacity	Up to 80% of the tensile strength of the base pipe
Differential pressure	10,000 psi
Temperature range °C	30°C 130°C
Compatible with	Metal Expandable Packers
*Custom specifications	available on request

Contact-locations