Beyond Unpiggable: Advancing Ultrasonic In-Line Inspection for Deepwater Integrity provides an update on the latest advances in ultrasonic (UT) in-line inspection (ILI) technology for deepwater risers, flowlines, and pipelines. The paper challenges long-held industry perceptions about so-called "unpiggable" assets and demonstrates how modern inspection technologies are expanding the range of subsea systems that can be inspected effectively.

The paper highlights the importance of regular ILI programs as a foundation of effective deepwater integrity management. By combining minimally invasive, easy-to-deploy inspection tools with efficient campaign planning, operators can better manage risk, improve asset reliability, and maximize production performance.

It traces the evolution of Quest Integrity's high-pressure, small-diameter InVista® Subsea ultrasonic inspection tools, which were originally developed to inspect deepwater systems without compromising maneuverability or operational flexibility. Over the last decade, the technology has expanded to support a growing range of challenging subsea applications, including multi-diameter pipelines, bi-directional inspections, riser-only inspections for life extension programs, smart cleaning verification, subsea launch-and-receive operations for single-line tiebacks, and flexible pipe inspections. The paper also highlights advancements in cloud-based analysis, assessment, and visualization capabilities that provide operators with greater access to inspection data for risk-based integrity management throughout the asset lifecycle.

Through a series of offshore case studies, the paper demonstrates how inspection technology has evolved alongside industry requirements and concludes by exploring the next frontier in UT ILI development: reliable girth weld crack detection capabilities for deepwater assets.

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