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Re: alien42 post# 51035

Wednesday, 02/13/2008 12:29:02 PM

Wednesday, February 13, 2008 12:29:02 PM

Post# of 107353
To understand where the flying lead industry is today~~

Phase 1
"The ‘Cobra’ was born – so named because it would resemble a striking cobra bobbing off the seafloor with its buoyancy. A bracket was developed to give the J-plate the height to allow the ROV to fit in behind but so that when it was flying the flying lead, the lead would trail underneath. The qualification programme began with a parking lot test in 1998 which combined four main elements."

Phase 3

The third phase includes DDI and KOP. After the Conger project and three years after the original development of the SFL, KOP project engineers and DDI management were together for the start of two simultaneous projects – Canyon Express and BP King. A brief discussion between the two of them resulted in the next phase, loose tube steel flying leads (LSFLs), where loose tubes are in an overhose as on Penn State, but connected to cobra terminations on the end to get the benefits of a cobra’s righting moment, seafloor proximity, and angle of attack. Both KOP and DDI began manufacturing the LSFLs. Canyon Express installed 39 KOP LSFLs and were supported by both KOP and DDI labour testing and deployment systems. BP King used KOP LSFLs and the DDI deployment system. BP Marlin used KOP LSFL and a DDI LSFL with KOS cobras and a DDI strength pot to transfer the axial strength.

At this point, DDI developed the Moray® which is a cobra-type connection but designed to host all control supplier J-plates for installation loads and ease of connectivity.

This phase also produced the compliant Moray® . The system consists of an electrohydraulic (EH) umbilicaljoining to 20ft of compliant 1/2” loose tubes via a strength termination (capable of full installation loads), then to a Moray® hosting two fibre transfer and test system (FITAS) and two electrical connectors parked on the Moray® bracket. Two 25ft long electrical flying leads (EFLs) are parked in the basket and the connectors are parked on the Moray® bracket. This design is for unlimited length of single well step-outs with only a tree connection required and has been successfully used on the Kerr McGee Navajo and BHP Boris projects. Cameron is using the system for five infield umbilicals for the ExxonMobil Erha project. This system is ideal for connecting one field to another, connecting to single well tie-backs, and for distances beyond the installation range.

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