Exploration • Drilling • Field Services


Under pressure O


water, high H2


il and Gas operators are dealing increasingly with higher temperatures and higher pressures, deeper content, erosive conditions and


S and CO2


extremes of temperature. Technological innovation, ingenuity and incremental qualification of design are key to ensuring that these fields can be developed safely and with zero impact on the environment. BEL Valves Ltd has a particular focus on high


pressures, critical valve applications such as emergency shut down valves and high integrity pressure protection systems. Pressure ratings have not suddenly increased.


There have been continual, incremental requirement rises over a number of years, each new challenge building on previous knowledge and technologies. BEL Valves is now regularly providing subsea valves rated greater than 10 000 psi. Pressure requirements are


now moving into the ‘Extreme’ and ‘Ultra’ high pressure ranges. So although BEL Valves already develop solutions for 15 000 psi subsea valves in bore sizes ranging from 2-14-in, higher pressures are also being explored. Ratings to 20 000psi


and above are now the new target to aim for, at nominal


bore sizes tending to be at 7-in and below. All valve products at these ratings need to be qualified as a minimum base point to API 6A PR2, and API 17D as no fully qualified technology exists in the market today. Specific consideration is given to full life cycle testing which raises development requirements for:


● Materials; the choice and availability of materials is highly dependent on the nominal bore size of the valve, the full temperature range, both positive and negative and the process conditions. All of these factors affect the material stability and therefore the ability to predict deflection and permanent set.


● Coating technologies: Closely linked with the issues of thermal expansion of different materials, the coating technology choices are also critical.


● Temperatures: are crucial to valve material selection, but also significantly affect seal technology selection. Temperatures below -460°C and above 1500°C create significant challenges but are more onerous and unique in combination.


BEL Valves will be at Offshore Europe in Aberdeen, UK, 6th to 8th September. ●


Enter 32 or ✔ at www.engineerlive.com/iog


BEL Valves Ltd is based in Newscastle- upon-Tyne, UK. www.belvalves.co.uk


32 www.engineerlive.com


First wireless subsea camera R


emote camera and video technology specialists EV has unveiled the industry’s first commercial


wireless subsea camera. tool, which can stream live video over distances of up to five metres back to a pick-up point such as an ROV or hard-wired receiver, has the potential to significantly reduce both operational risk and time. The battery-powered Neptus Wireless Subsea


Camera (WSC) provides a major step change for the subsea sector through its unique features and has the capability to operate at depths of up to 350 metres (1150ft) for 10 hours. Applications for the camera and receiver include


providing multi-perspective views of complex operations such as subsea tool intervention, construction and remote monitoring of subsea equipment. The camera’s through-water wireless radio


frequency (RF) technology has been supplied by a specialist in the field, WFS Technologies. Francis Neill, CEO of EV, said: “Early application


of the camera, which can readily and easily be deployed by ROV or attached to subsea hardware, also brings the very real potential of cutting out costly and time-consuming operational phases. For example, instead of deploying additional ROVs to


WSC provides are:


● Providing a wider perspective view of subsea ROV operations.


● Making up subsea connections between jumpers and manifolds, risers and templates or vessels - anywhere that multiple views or perspectives are required in order to bring together two or more items and which are currently achieved by using a second or third ROV.


● Tooling/Subsea Controls Applications which provide an additional view of operations such as subsea intervention around templates or wellheads and valve manipulation.


● Remote Subsea Monitoring. For example, leak monitoring or structural assessments from remote locations where cabled solutions are not practical. ●


For more information, visit www.evcam.com


A ‘step-change’ for multiphase flow assurance


K


ongsberg Oil & Gas Technologies (KOGT) has released the first phase of LedaFlow, its next


generation multiphase flow assurance simulator. A product of nearly a decade of collaboration


between Total, ConocoPhillips and SINTEF, KOGT has further developed and commercialised LedaFlow as a tool to improve production for oil and gas engineers. LedaFlow


offers improved functionality, fidelity, flexibility and accuracy for reduced risk, better performance and improved return on investment. In order to


provide engineers with highly accurate simulation and data, LedaFlow is closer to the actual physics in the pipeline, rather than empirical data, and provides accurate 1D or quasi 3D simulation. Utilising improved measurement technology,


new, large scale experimental data has been implemented with new field measurements to improve the basis on which LedaFlow’s multiphase models are developed. LedaFlow increases the resolution of modelling:


solving mass, energy and moment conservation for each of the three common fluid phases. This provides a step change in understanding and improved accuracy in critical transient events. LedaFlow


Suite is available as a point model plug-in for third party software, as an engineer tool with an easy to use interface and as an integrated


plug-in to Kongsberg’s proven dynamic process simulator, K-Spice. ●


For more information, visit www.kongsberg.com/kogt


capture a second or third perspective, which requires extra support infrastructure, Neptus WSC overcomes this by providing the additional view point and communicating wirelessly back to the operating ROV. Among other key applications that the Neptus


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