ABERDEEN, UK -- STATS Group has completed maintenance on a 36-in. (91-cm) gas pipeline off Qatar for Dolphin Energy.
The program was performed from the DOL-2 platform in the North field, northeast of Ras Laffan.
Four STATS isolation technicians deployed a remotely controlled Tecno Plug to provide double block and bleed isolation. The plug, which eliminates the need for tethers or modified pig-trap doors, was continuously monitored and remained stable for the full isolation period.
STATS also helped Dolphin test the integrity of a flange joint using an In-Line Weld Test Tool. The technicians continued to isolate the line, allowing further client testing operations to be conducted prior to finally unsetting and reverse pigging the plug back to the launcher.
Qatar gas line serviced using Tecno Plug