Sea Technology

AUG 2017

The industry's recognized authority for design, engineering and application of equipment and services in the global ocean community

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www.sea-technology.com August 2017 / st 55 DAV MX Controls Cement Delivery, Streamlines Ops The DAV MX circulating sub from Churchill Drilling Tools, has been used to significantly cut process time and costs for two challenging deepwater cementing operations, without com- promising string functionality. The DAV MX runs on Churchill's MX Smart Dart technology. The valve assembly operates on a piston and spring mechanism, which is activat- ed when a dart is pumped down the drillstring. A range of robust darts are pumped at high speed into a simple sub and catcher. In a deepwater well in the Gulf of Mexico, following the deployment of several failed lost circulation material pills at 28,000 ft., a heavy cement 250- bbl slurry of 16.6 ppg was directed into the formation via the DAV MX ports. This protected the lower bottom hole assembly (BHA) and delivered the ce- ment straight into the loss zone. The latch-and-seal ability of the DAV MX prevented ingress into the lower BHA, while the lock-open feature permitted bypass at low flow rates to restrict dy- namic losses. The controlled cement delivery and the ability to avoid trip- ping out of hole proved to be a major time and cost-saver for the operator. Fugro's New Survey Vessel Racks Up Work Backlog Fugro Venturer is the new Fugro purpose-designed, standardized sur- vey vessel. The 72-m vessel is a plat- form for technological innovation, where Fugro's trademark technologies, such as OARS (centralized command centers with direct access to offshore survey projects), Back2Base (enabling large amounts of survey data to be sent from offshore vessels to onshore processing centers and clients) and ROAMES (a powerful asset manage- ment solution streamlining subsea op- erations) are radically changing infor- mation delivery. Fugro has secured a significant con- firmed work backlog for a campaign of site and pipeline route surveys, for clients including Aker BP, following commissioning and survey trials. Fu- gro Venturer is contracted to conduct simultaneous analog/digital surveys, 3D high-resolution seismic and envi- ronmental sampling and shallow geo- technical operations. Agreement for New UK Maritime, Offshore Training Facility The trade representative body Mersey Maritime announced an agree- ment to develop a brand new mari- time and offshore training facility in the northwest U.K. The cluster orga- nization for the maritime sector in the northwest U.K. has been instrumental in initiating discussions and lining up potential partners from across the re- gion's public and private sectors to secure the business connections and support needed to bring Glasgow- based Stream Marine Training to Mer- seyside. Stream Marine signed an agree- ment with Wirral Council to invest up to £1.5 million in new facilities at Tower Quays and a new fire training ground along Duke Street, Birkenhead. The investment could also have a sig- nificant broader economic impact. offshore oil &ocean engineering

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