ICON Engineering has launched its Advanced Riser Tension Protector (ARTP) Equipment Range, representing what it says is a significant advance in coiled tubing lift frames (CTLFs) for subsea well completions, well testing and well interventions.

The equipment functions as a surface tension frame, designed to support the completions/workover riser (C/WOR) or landing string in tension beneath the rig’s top drive, while providing a safe work window for rig up of coiled tubing/wireline units.

An ARTP provides a safe relief mechanism with over and under tension protection and back-up emergency motion compensation, protecting the C/WOR or landing string against accidental loads during locked-to-bottom operations.

Icon business manager Steven Plain said the five models of the ARTP equipment range were designed to meet best practice standards for subsea well completions, well testing and well interventions from floating rigs.

“The range combines proven technology with innovative design to enhance overall operational efficiency and safety,” he said.

Each model has a varying degree of riser tension protection and passive heave compensation capacity, and can be manufactured either as inline system with a separate compensator unit and tension frame, or as an integrated system with combined compensator unit and tension frame.

Icon has been supplying both rigid and motion compensated tension lift frames for use on subsea well completions and interventions from floating rigs since the late 1990s, working on the development and supply of motion compensated coiled tubing lift frames in recent years.

“This work has culminated in the ARTP equipment range, specifically designed to provide the necessary functionality of coiled tubing lift frames, while incorporating advanced features to protect the completions/workover riser or landing string against accidental loads during critical locked-to-bottom operations, particularly accidental lock-up or stroke out of the rig’s motion compensator,” Mr Plain said.

The range is suitable for use with both in-riser and open water riser systems, he said, noting that this is a safety requirement under international standards including ISO 13628-7 and DNV-OS-E101.