In a unique test of the capability of micro ROV’s, HPR ROV has successfully removed sections out of two 5-inch OD Sched40 pipes using its customised Outland 1000 ROV System for a North Sea operator client.
Two Outland 1000 ROV were deployed for different phases of the job, both with bespoke modifications.
Phase one: The first vehicle had the hydraulic cutting discs fitted to the front. The ROV system was lowered down the inside of a 20inch caisson with a gap cut in the side at the -50m level to allow the ROV to exit the caisson and enter the cell. From the caisson the ROV had to navigate the cell, locate the pipes and cut them in such a manner to allow the second ROV to enter.
Phase two: The second vehicle had a venturi mandrill fitted to the front with an exit pipe sticking out the rear to extract “Attic” oil. The ROV System connected to a topside water pumping system to activate the venturi. This phase is currently underway and will allow the extraction of residual attic oil from adjacent cells to start.