Update on UKCS Field Development Projects - Intsok

Field Inde
Area Southern North Sea
Operator Shell
Field facilities 6 platforms, 26 wells, 4 pipelines, 2 hose bundles
Production end Jan 2006
Comments: Decommissioning plan approved Aug 2007. Shell has contracted AF Gruppen for
onshore disposal and Seaway Heavy Lifting for platform removal, though it has only signed a
full contract, worth £23m, with AF. The onshore disposal site has not yet been revealed. The
subsea decommissioning contract has been awarded to Subsea 7. Dsv Toisa Polaris made a
couple of visits to the field in H2 2009. Offshore removals will start this summer using SHL’s
newbuild lift-vessel Oleg Strashnov. The topsides of the four smaller platforms – JP, L, M and
N – will be removed by single lift, and those of the two larger platforms, JD and K, by multiple
lift. The largest platform, JD, has a 3,028t topsides supported by a 1,108t jacket. There are two
export pipelines, of 20in and 24in diameter, two infield pipelines and two infield hose bundles.
The pipelines will be left in situ and the hose bundles retrieved; they have been disconnected
from the platforms in preparation. Last autumn Dutch company HAK, assisted by BW Offshore
production ship BW Carmen, performed pipeline cleaning. Abandonment of the 16 wells on the
JD, K and N platforms has been completed by Halliburton using a rigless method. Offshore
operations, including well abandonment, are being supported by Seafox jackup Seafox 1,
which was fitted with a 300t crane for the assignment. Seafox 4 has also provided support. The
four M wells were abandoned in 2006 by jackups GSF Britannia and Noble George
Sauvageau, and the six L wells in 2007 by jackup GSF Monarch.
Field
Ivanhoe/Rob Roy
Area Central North Sea
Operator Hess
Field facilities AH001 semisubmersible production platform, nine flexible risers.
Each field has subsea wells – Ivanhoe five producers and three
water injectors, Rob Roy six and three respectively – tied into a
manifold. Both manifolds are tied back to a riser base manifold.
Oil export by 41km, 14in pipeline to Claymore, gas export/import
by 23km, 8in line to Tartan.
Production end Mar 2009
Comments: Production from the Ivanhoe and Rob Roy oil fields came to an end in Mar 2009.
Decommissioning will be jointly planned with that for Fife and its satellite fields, though no timeframe
yet exists for submitting the plan or performing the work. In July 2009 Petrofac bought
the AH001 production platform, which is now parked at the McNulty yard. The platform, which
has been renamed FPF-1, also served Hess’s one-well Hamish satellite, from which production
has also ceased, and Endeavour’s Renee and Rubie fields, which may be redeveloped (see
Rochelle entry in Section 2).
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