We recently performed two jumper fabrication metrologies for an operator in Congo, off the coast of West Africa using our subsea precise inertial navigation system (C-PINS). We worked with a great ROV crew to transport C-PINS between manifolds and permanent guide bases (PGB) at a depth of 1600m. The data collected allowed our surveyors to precisely measure the distance between these seabed structures as well as the heading, pitch and roll of the structures. We also collected precise differences in depth between the installations. The operator will utilize this information to construct two jumpers in an onshore fabrication yard. Once fabricated the jumpers will be transported offshore and lowered in place connecting the manifold to the PGB’s.
The data from the two metrologies was collected within the client’s specified tolerances and we had the deliverable submitted to the client within 12 hours. We were able to save the operator a significant amount of vessel time and money by using C-PINS to complete these metrologies. This technique is much faster than the industry standard time, ultimately increasing productivity and efficiency for the client. With over 200 metrology surveys completed to date, Zupt and C-PINS continue to provide the deliverables for jumper fabrication within the tightest deadlines and to the highest quality.
Choose Zupt for efficient, optimal metrology surveys.