IQIP

IQIP Waterhammer successfully delivers ultra-deepwater piling for Malampaya Phase 4

News published on May, 19, 2025

We have successfully completed the deployment of our Hydrohammer® S-90W — known as the Waterhammer for its water-driven operating system — for Allseas on the Prime Energy Malampaya Phase 4 project offshore the Philippines.

Our Waterhammer is purpose-built for extreme deepwater piling and continues to set the benchmark for safe, reliable subsea installation. Capable of operating at water depths of up to 2,000 meters, it uses fresh or salt water instead of hydraulic oil as the operating medium, fully eliminating the risk of oil spills. This water-driven system also removes the need for a return hose, increasing operational efficiency and reducing complexity during subsea installation.

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Built for extreme deepwater – setting the standard in safe, reliable subsea installation.

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The Waterhammer entering the splash zone during deployment.

About the Malampaya Phase 4 project

The Malampaya gas field is a deepwater gas-condensate reservoir located offshore west of Palawan in the Philippines. It is developed and operated by Prime Energy, on behalf of joint-venture partners Prime Oil and Gas, Inc., UC38 LLC, and the Philippine National Oil Company – Exploration Corporation. Malampaya Phase 4 marks the latest expansion of this critical energy infrastructure project. In this phase, Allseas is responsible for installing key pipelines and umbilicals that will connect two new wells to the Malampaya subsea manifold and associated infrastructure. Operations are executed using the Fortitude, Allseas’ vessel designed for the installation of flexibles, umbilicals, manifolds, jumpers, and a wide range of subsea components.

Piling scope

The piling scope covered water depths ranging from 700 to 1,100 meters and comprised the installation of 18 piles for three Flowline End Termination (FLET) structures (6 per structure), along with 6 turning bollard piles to secure the flowlines where they counteract forces in curved sections. The piling campaign was successfully completed, including the most technically demanding installations within the canyon at water depths reaching 1,100 meters.

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The Waterhammer sleeve aligning with the top of the turning bollard pile.

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Once the pile is self‑stable, the Fast Frame® sleeves open automatically, allowing pile driving through the frame to final depth.

IQIP equipment in operation

For this deepwater installation scope, Allseas successfully operated a full IQIP Waterhammer spread, consisting of the Hydrohammer S-90W with a 36” conductor sleeve and ballast, a 36” Fast Frame® to support, level, and orient free-standing piles, and a complete set of spare parts and auxiliary equipment.

Why IQIP

IQIP equipment proved fully capable of subsea operation at the required water depths, making it a highly effective solution for this complex deepwater scope. To further secure operational continuity and reduce project risk, we also developed and delivered a parallel contingency solution tailored to the project’s specific demands.

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