Static testing has been completed on the new REX-CELL™ 2X(CT) flow visualisation system that will be a key part of the new Advanced Multiphase Facility. The tests have proved the accuracy of the system and highlighted the potential it has for supporting the development of cutting edge research and technology for the oil and gas industry.
“Starting at the beginning of October, we carried out two-phase and multiphase static acceptance tests using different mixtures of oil, gas and water,” explains Project Engineer, Sandy Black. “In all, we did tests at over a hundred static test points.”
In each test, Sandy and his team established a known phase area fraction across the test pipe and compared this with the results from the REX-CELL system. (The phase area fraction is the cross-sectional area occupied by one phase relative to the total cross-sectional area of the pipe at that point.)
“We found that there was less than 3% difference between the known area fraction and the result obtained using the new system (at a 95% confidence level),” says Sandy. “This is a class-leading result, especially for multiphase mixtures containing oil, gas and water, which are particularly difficult to visualise in this way. In fact, the result was better than what we had predicted, which had been a result of about 5%.”
The REX-CELLTM 2X(CT) device is made by Flow Capture®. It is a highly integrated and non-intrusive system that is clamped to a pipe and uses X-ray sources to visualize and analyse multi-phase fluids flows.
The new system is designed primarily for measuring multiphase flows in horizontal and vertical pipes and will be capable of determining the phase fractions within a multiphase pipe flow in real-time. It also offers extremely high-frequency data capture of up to 190 frames per second.
“This new system is a key part of our Advanced Multiphase Facility,” says CFD Team Manager, Marc Laing. “In the new facility, the pressures will be too high to allow a traditional viewing window to be used to assess flows. This is where the REX-CELL system will come in. The system samples data at such a high rate, it allows the full visualisation of high-pressure flows.”
The tests on the REX-CELL system are on-going. The next stage will be to put the system into an active test line and to do measurements for different flow regimes. This will conclude the device’s commissioning phase. The team will then carry out further tests using CFD modelling.
The system should be ready for commercial use by the end of November and links to other work at NEL involving a Flow Mapping joint research project
For more details, contact Sandy Black.
16 November 2018