See more subsea and keep your ROV on the critical path
Claxton’s offshore camera systems offer cost-effective routes to better subsea inspection and monitoring – and keep your ROV on the critical path. Read on to find out how…
Underwater cameras are crucial for monitoring the progress of subsea operations. The offshore industry has traditionally relied on camera systems mounted on remotely operated vehicles (ROV) for carrying out inspections and monitoring installation tasks. However, there are locations ROV-mounted cameras cannot access and situations that call for long-term, continuous monitoring – a task that would be too expensive using an ROV.
Claxton has years of experience of developing and deploying advanced camera systems for subsea applications. Our range includes cameras designed for general subsea applications such as downhole inspection and disposable camera systems.
For example, the CAMSCAN™ system is a retrievable colour camera system designed to be run on drillpipe-conveyed tooling and sand-line frames. It is ideal for downhole operations and Claxton customers often use the system for wellbore troubleshooting, fishing operations and inspecting landing shoulders, seal areas and tieback threads. CAMSCAN™ has played a key part in numerous subsea installation operations such as template landing and jacket-guide location.
Claxton’s CAMSCAN™ camera systems offer a complete 360-degree pan view 180-degree tilt – ensuring vital subsea visibility.
A COMPLETE VIEW
Gary Omer, product leader – cameras and downhole tooling, explains “CAMSCAN™ is a high-resolution camera that operates in water depths to 2000 m and can handle low-light conditions. It provides 360° pan and 180° tilt to give a complete hemispherical view, supports digital recording and easy JPEG and MPEG data transfers to DVD for on-site back up. CAMSCAN™ is a compact, transportable system that is quick to set up and easy to operate; it is ideal for customers who want maximum visibility in poor conditions.”
The CAMSCAN™ system can also be used in open-water applications, for example, to check for cement returns and can be deployed in a frame or directly onto the seabed. Recent applications have included its use on a template installation where pan-and-tilt capabilities were required and caisson inspection.
INDISPENSABLE INSTALLATION MONITORING
Subsea operations come in many different forms. For some operations, the emphasis is on having a clear and continuous picture of events as they unfold. Claxton’s MULTICAM™ is a low-cost camera system for attaching to subsea structures to provide visual assistance during subsea operations such as installing subsea structures, wellheads, whipstocks, docking pile extensions and drilling templates, and while running casing. For example, MULTICAM™ can be used to monitor stab guides and other key areas to ensure safe and accurate installation and to verify that infrastructure has been successfully locked down.
MULTICAM™ gives continual installation monitoring – such as this view of a lock down pin.
MULTICAM’s rugged, field-proven design means that it can be deployed in water depths to 2000 m. A compact, lightweight system, MULTICAM™ can be transported by helicopter and, once set up, gives operators the option to control multiple cameras and lights through a single control system.
Another example of MULTICAM™ in action – this time viewing a tieback tool landing on a permanent guide base.
When operations dictate leaving items subsea rather than incurring retrieval costs, MULTICAM™ meets this need. Despite delivering a level of performance and an image quality usually associated with more expensive systems, the system is essentially “disposable”. Operators can disengage, leave the camera behind and retrieve only the umbilical to surface. This eliminates the need for an ROV to retrieve the camera system and can deliver significant time savings.
KEEPING ROV’S ON THE CRITICAL PATH
There is a range of operational benefits from using Claxton camera systems, as Omer explains. “The deployment of our cameras is unaffected by tidal conditions, so they can be deployed as soon as they arrive at the worksite, unlike ROVs, which can only be run in slack water. Furthermore, their rugged construction and compact design mean that they can show what is happening in areas that ROV-mounted cameras cannot reach.”
When an ROV is required to perform visual inspection and verification work, it has to be taken off other critical path activities. Using Claxton’s task-specific camera systems enables operators keep ROVs free to perform other tasks. The ability to free ROV time and the reliability issues that affect some ROV operations mean that many operators choose to use Claxton cameras as back-up systems, even when they plan to use an ROV-mounted camera as the main recording device.
Recently, Claxton cameras have also been used to guide underwater cutting operations. Camera systems applied on abrasive cutting jobs, particularly when mounted on the cutting tool – as is the case with Claxton’s SABRE™ abrasive cutting system – must be rugged and suitable for frequent cycling in and out of the water. On a recent decommissioning project, the MULTICAM™ system proved its worth by delivering a flawless performance throughout the cutting operation.
As oil and gas operations move into more challenging environments and the requirements for subsea engineering become more intricate and demanding, the need for effective camera systems has never been greater. The combination of rapid despatch, ease of use and reliability has helped to establish Claxton’s camera systems as the obvious choice for the offshore industry.
GLOBAL REACH, RAPID RESPONSE
Claxton’s camera systems are available for use at short notice and can be quickly transported to offshore locations anywhere in the world. Each system is sent out in duplicate pairs to ensure full redundancy while in the field.
You can learn more about the complete range of surface and subsea offshore camera systems from Claxton on our offshore camera page.