Drilling Derrick and Drilling Package Integrity Services
The partnership will provide a High Definition 3D Laser Scanning (HDS) and Modelling service,
specifically tailored to offshore drilling derricks and drilling packages.
Full, online, integration with Axioms derrick survey and inspection reports (typically DROPS, API 4G or NDT) allows easy maintenance of integrity registers and a visual (post survey) cross check of damaged areas.
The new partnership builds on the experience of both companies to offer combined asset integrity
management and support to engineering operations within the offshore drilling industry.
What is Laser Scanning?
In laymen’s terms, 3D laser scanning is the process of directing a (Class 3R) laser beam at an object and calculating a distance measurement for each point of contact between the beam source and object.
Millions of points can be scanned in a very short space of time (creating a ‘point cloud’), allowing accurate capture of the object shape and dimensions.
Modern, high definition laser scanners (such as Leica HDS 6100) capture points within a 3600 radius and can even extrapolate dimensions and shapes of ‘shadowed areas’.
How is this useful?
The technique can be used to provide extremely accurate dimensional or alignment checks on existing structures and for the production of as-built CAD drawings.
The point cloud data can be used to create fully rendered 3D modelling (post survey), which can, for example, be used to simulate addition of new equipment or animated to provide clash analysis or destruct simulation.
Logistics and Personnel
Typically a two person team is required.
In addition to the Senior HDS Surveyor, the team includes an inspection or trades team leader, possessing an intimate knowledge of drilling packages – this allows clear identification of critical survey areas and rapid progress through the workscope.
Work at height harnesses are provided to allow surveyors access to all derrick levels, however for standard surveys it is assumed that all survey areas at height will be within hand railed areas (rope access support can of course be provided if need be).
Equipment is relatively portable and suited for use throughout drilling packages.
A Hot Work Spark Potential (HWSP) permit is typically required for laser scanning offshore and the laser beam emitted by equipment is of Class 3R.
Point cloud data accumulated is manually cross checked by the surveyors onsite to ensure quality control and is standard for all deliverables – meaning that clients can request additional models or reports post-survey without re-mobilising a survey team.
Our clients among UK Operators / Drilling Contractors in 2011 included:
Total E & P (UK) Ltd
CNR (UK) International Ltd
KCA Deutag Ltd
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HIGH DEFINITION LASER SCANNING
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