Wellhead sonar surveillance using activesonar for dolphin energy in Qatar
Well head surveillance using ActiveSONAR™ clamp on metering for Dolphin Energy, Qatar
Asia, Middle East And North Africa
Dolphin Energy has two offshore production platforms, DOL-1 and DOL-2, in its concession area, located to the north east of Qatar’s Ras Laffan Industrial City (between 70 and 90 kilometres offshore).
After two years of production, Dolphin Energy required a solution to validate whether their current systems were accurate enough for inferring total single phase flow rates for each well and also establish if there was a convenient alternative to using test separators.
Well head surveillance was undertaken using ActiveSONAR™ clamp on metering on 6” pipe
Full multi rate production testing was performed over a period of 24 hours, measuring the total volumetric wet gas flow rate on selected wells
Sonar flow rates at actual conditions were recorded at each rate and converted to standard conditions using line pressure, temperature and a calculated compressibility factor
Test separator was operated in its normal manner to provide a reference point
Value to client
ActiveSONAR™ flow meter was reading on average 3-4% higher than the dry gas reference meter (data was compared with the dry gas separator flow rates supplied by Dolphin Energy)
Dolphin Energy concluded that they were very satisfied with clamp on sonar metering:
– No loss or interruption to production
– Quick and inexpensive solution
– Accurate and reliable results
– An effective alternative to traditional test separators