Permanent Caprock Integrity

Stronghold™ Systems

Archer Oiltools' Stronghold™ systems provide an economical and effective alternative to traditional plug and abandonment (P&A).

Stronghold systems
Barricade™ system: Archer’s field proven Barricade system perforates, washes, and cements the annulus, creating a rock-to-rock barrier in just one trip.
Defender™ system: Archer’s field proven barrier test system enables operators to perforate and test annular barrier.
Fortify™ system: Archer’s next generation barrier verification system used in plug and abandonment (P&A) and slot recovery. It is a superior system used to verify the integrity of existing annular barriers such as creeping formation and cement, ensuring Permanent Caprock Integrity.

By eliminating the need for milling, Archer’s Stronghold™ systems deliver a step-change in efficiency and effectiveness for P&A and other technologies. Together with Tubing Conveyed Perforating (TCP) products and new charge development, Archer gives an efficient and safe execution of operations providing time and cost savings for our customers.


SPE Paper: Successful Multi-Well Deployment of a New Abandonment System for a Major Operator

This paper provides an overview of the innovative new abandonment system elements and describes the successful deployment operation in detail. Stokkeland, T. A., McNicol, J., & McWilliam, G. (2017, March 14). Successful Multi-Well Deployment of a New Abandonment System for a Major Operator. Society of Petroleum Engineers. doi:10.2118/184716-MS

Stronghold Barricade Specifications

Size, in 6 5/8 – 7 5/8 9 5/8 – 16
Min ID, in 2.2 2.3
Circulation rate, lpm [bbl/m] 1,600 [10] 2,200 [14]
Pressure rating, psi [bar] 5,000 [344] 5,000 [344]



Lars Harald Norheim

Director Business Development & Sales