Permanently installed, long term moorings have been used in the offshore industry for a relatively short period of time when compared against their history of usage with mobile offshore drilling units (MODUs).
Welaptega Marine is a world leader in underwater inspection technologies, specialising in risk management for offshore installations. Welaptega’s innovative technologies allow operators to evaluate the integrity of their underwater assets and make informed engineering decisions regarding operational safety.
Technology for rapid response to underwater damage and the inspection of moorings, risers and pipelines
Welaptega specialises in both rapid response to underwater damage events, and in integrity verification through regular inspection of moorings, risers, and pipelines.
- High-definition video (HD3DV). The offshore industry’s highest visual acuity
- 3D modelling (3DM). Geometrically accurate modelling of asset condition
- Chain measurement system (CMS ). Class required chain measurement metrics
- Rope measurement system (RMS). Rope surface condition and diameter measurement
- Mechanical caliper. Ad-hoc ROV based measurement capability
- Welaptega’s underwater and onshore measuring technologies allow operators to not only determine the condition of their assets but to implement a best practice asset integrity management
- Welaptega’s survey capabilities and technologies meet international industry standards and are certified by Lloyds’ Register and Det Norske Veritas.
Underwater HD3DV and 3DM technologies provide state-of-the-art visualisation of underwater assets on offshore instillations
HD3D video for underwater images
Welaptega’s HD 3DV camera system is deployed by ROV to capture high-definition 3D video footage of subsea components. Video can be viewed in 3D in real-time during inspections and ROV operations. Video can also be reviewed ‘on the beach’ following an offshore operation. High quality 3D allows operators to identify damage such as gouges and pitting.
Stereoscopic video provides ROV operators with greater spatial perception for real-time manipulator work, allowing tasks to be completed more quickly and with greater precision.
Welaptega’s HD3DV system is rated for subsea deployment to 3000m.
3DM for high-resolution, geometrically accurate models
3DModelling uses advanced photogrammetric techniques to generate geometrically accurate 3D models of components from 2D digital still images. Corresponding pixels are identified between overlapping photos, and geometry is calculated through a series of iterations based on the pixel’s relative positions. 3D models are scaled with respect to the known offset between cameras or an object of known dimensions placed on the component.
Resulting 3D models represent component geometry with accuracy typically within 1mm, and can be measured to quantify critical dimensions such as ovality, alignment between planar surfaces, cross-sectional areas, and gouge depths, widths, and heights. 3D models can also be exported in formats compatible with finite element method software packages for stress / strain analysis.
If a repair is required, the 3D model can be exported to industry-standard computer-aided design (CAD) packages so that a custom design can be created to fit the damaged geometry.
Resulting models can also be 3D printed to produce prototypes, mock-ups for subsea workscope operations planning, or for display purposes.
Chain management system for measurement of intergrip diameters of subsea morning chains
Welaptega’s chain measurement system (CMS) is an ROV-deployed optical calliper that measures the link intergrip diameters of in-service subsea mooring chain.
Welaptega provides operators with measurements that indicate how much material loss has occurred due to deterioration, such as corrosion or wear. Results are compared to industry standards and classification society inspection rules and industry guidelines.
Advantages of using Welaptega’s CMS for mooring inspection include:
- Chains remain in-service during inspection; no shutdown in production or deck recovery required
- Visual inspections of individual links are performed both during data capture and when data is processed
- A comparison to previous inspection results is provided in Welaptega’s reports to identify trends in corrosion or wear patterns, allowing more accurate replacement budgeting
Rope measurement system for monitoring in-service condition of materials
Welaptega’s rope measurement system (RMS) is a unique method for monitoring in-service condition of fibre or wire rope moorings.
It is deployed by work class ROV to survey the in-service condition of fibre and wire rope moorings. Comprising a built-in cleaning system and a hydraulic sled equipped with video cameras, the RMS is towed along a rope to remove marine growth and capture video from four directions.
The video data is then processed to detect changes in the cross-sectional geometry over the length included in the survey. These measurements indicate potential rope deterioration, which could lead to mooring line failure.
The Na Kika field extends over Missisipi Canyon blocks 474, 429, 657, 607, 522, 520, 383 at a water depth of 6,000ft in the Gulf of Mexico, approximately 225km south-east of New Orleans, Louisiana, US.
Welaptega Marine, world leader in moorings fitness for purpose assessments (MFPA), is attending the Offshore Technology Conference (OTC) in Houston this week to deliver a paper on life extension of mooring systems on offshore floating production facilities.
Welaptega Marine, world leader in mooring inspection and fitness-for-purpose evaluations, is pleased to announce that the Beijing Safetech Pipeline Company has been appointed as its exclusive sales and operational agent for China.
Welaptega Marine, world leader in mooring integrity verification, is pleased to announce that it has formed an alliance with UK engineering firm BPP-TECH to offer the highest-quality fitness for purpose evaluations for offshore mooring systems.
Welaptega Marine, a world leader in mooring integrity verification, has been awarded a contract to inspect riser moorings on the high-profile Petrobras Cascade Chinook development in the Gulf of Mexico.
Failures of mooring systems in offshore floating production are not easy to predict, but they do occur, and they will happen more often as infrastructure nears the end of design life.
Tony Hall, CEO of Welaptega Marine, will be a featured speaker at a seminar of asset integrity experts examining the impact of aging infrastructure in the offshore oil and gas sector.
A new sense of urgency is emerging around ageing offshore infrastructure as facilities reach the end of their design lives and major incidents cost millions - in some cases billions, a group of integrity management experts heard during a Petronas seminar titled Managing Risk on Ageing Offshore Infrastructure.
Welaptega Marine, world leader in risk-based mooring integrity verification, has been invited to make a guest presentation Wednesday, 17 October at the Petronas Caigali seminar on managing risk on aging offshore assets. The seminar is being held at the Crowne Plaza Hotel, Kuala Lumpur, Malaysia.
Welaptega Marine, world leader in mooring integrity verification, is pleased to announce that it has been awarded a contract to inspect the mooring systems on the Anasuria floating, production, storage and offloading vessel (FPSO) in the UK North Sea.
Welaptega Marine has completed a first with its in-water baseline survey on the mooring system of BP's Skarv floating production storage and offloading (FPSO) vessel in the northern North Sea, Norway.
Welaptega Marine, world leader in mooring integrity verification, will join FPSO experts from around the world this week at the Emerging FPSO Forum in Galveston, Texas, to discuss unexpected problems discovered during subsea surveys.
Offshore assets often get damaged: they get bent, dented, dropped or even broken. These common offshore impacts cost operators millions in repairs, downtime, lost production and they jeopardise operational safety.
Hurricane Isaac has caused an estimated $500m to $1bn in damages to the offshore energy sector in the Gulf of Mexico.
Welaptega Marine, world leader in solving complex underwater problems, is launching an intelligent imaging solution to detect and measure deterioration of wire rope moorings of FPSOs.
Welaptega Marine, a world-leader in underwater inspection on offshore installations, is pleased to announce that it has been awarded a patent, by the US Patent and Trademark Office, for its Rope Measurement System (RMS).
Welaptega Marine, a world leader in subsea inspection technology in the oil and gas sector, will present two peer-reviewed technical papers at OTC 2012 this week.
Welaptega Marine is set to attend the 2012 Offshore Technology Conference, which takes place between 30 April and May 3 2012 at the Reliant Center in Houston, Texas, US.
One year ago today, the Deepwater Horizon drilling rig exploded and sank in the Gulf of Mexico, leading to the worst environmental disaster in US history. It took lives – 11 workers died. 4.9 million barrels of oil leaked from the BP Macondo well, causing extensive damage
This comment by Welaptega founder and CEO Anthony Hall is a response to a Wall Street Journal story carried on the US President's report on the Macondo spill. "Do not forget the lives lost in this incident. Do not forget that in pursuit of the petroleum that fuels our societies many tho
Welaptega Marine, world leader and exclusive supplier of in-water mooring inspection and subsea 3D in the offshore oil and gas industry, has been selected by the Offshore Technology Conference (OTC) Houston to present a paper on a pioneering technology for recertifying moorings on mobile drill ri
Following successful collaboration with a Houston-based drilling organisation, Welaptega Marine now provides the ability for MODU operators to fulfil compliance driven and post hurricane inspections at sea, while the MODU is working, or as part of a scheduled rig move. Download this
Welaptega Marine has saved a Gulf-of-Mexico-based offshore driller millions of dollars through a pioneering technology to re-certify mooring systems on semi-submersible drill rigs (MODUs) while they are on station. It is estimated that the driller saved $10m in maintenance costs on one