Asia-Pac-Slides.pdf

© 2012 RESL & BP. All Rights Reserved

4th Annual Offshore Decommissioning Training Workshop 31st Oct-1st November 2012

Decommissioning Experience & Lessons Learned in Asia Pacific



579 X

334 X



Offshore Decommissioning in

Malaysia



Malaysian Decommissioning 1: Summary �  The total removal of the West Lutong Pipeline Manifold Jacket, a 200-tonne

pipeline manifold jacket in 15m of water depth.

�  Complete removal of the Tapis Offshore loading Terminal, an offshore a single anchor leg mooring (SALM).

�  Complete removal of two single buoy moorings offshore Sarawak (SBM1 and SBM2) in 15m water depth.

�  Ketam was installed in 1984 and ceased production 1997. The platform was totally removed in 2003 and disposed of onshore. The pipeline was left in-situ.

�  Baram 8 , tripod, was installed in 1968 and was hit by storm waves in 1975 and all production ceased. The platform was partially removed in 2005 and the jacket designated as an artificial reef. The pipeline was left in-situ.

�  2010-12: In Sabah EMP-SM4, SMV-A, EWV-A & Sarawak BAV-A Vent Structure



Malaysian Decommissioning 2: Katam KTMP-A & KTV-A, Sabah

!

Katam KTMP-A Platform

Platform Component"

Weight (tonnes)"

Jacket" 1062"Piles" 1011"

Conductors" 311"Caissons" 0"Anodes" 39"

Boat Landings" 30"Decks" 710"Others" 127"

Total Weight!Water Depth! 54 Meters!

KTMP-A Platform Characteristics



Malaysian Decommissioning 4: BARAM 8

�  BARAM- 8 consisted of tripod jacket, one well head and a simple deck.

�  BARAM- 8 damaged in a storm & collapsed on sea bed in 1975 �  BARAM- 8 was a salvage operation �  The BARAM- 8 jacket was made into Malaysia's first artificial reef in

2004.



"Baram 8" was scheduled for a Rigs 2 Reef trial in Miri, Sarawak. The rig became a reef on November 8 2004. These photographs was taken in September 2007, the rig has now become a reef, fish abound, not just attracted there but there are all sorts of fish growing there e.g. (tiny cardinal fish) that could not have made a crossing in open ocean except as plankton.

Malaysian Decommissioning 5: BARAM 8

Baram 8 jacket is now now part of Miri Kenyalang (hornbill) reef



Malaysian Decommissioning 6: Petronas Platforms 2010-12

�  The following platforms have been decommissioned in the last 2 years �  In Sabah EMP-SM4, SMV-A, EWV-A �  In Sarawak BAV-A Vent Structure

�  SM-4 was the first Petronas Decommissioning. A small work barge with a 50mt capacity was used.




Brunei



�  During three decades of operating offshore, BSP have removed about 30 redundant

structures.

�  Between 1975 and 1984, all the redundant structures were either brought onshore for scrapping or disposed of by deep water dumping in international waters after bringing the topsides onshore.

�  With the instigation of the ‘rigs to reef’ policy in August 1988, BSP started disposing of the redundant structures as artificial reefs in an area well outside commercial shipping lanes.

�  1988: Two redundant offshore oil platforms were placed on the seabed northwest of the original tyre reef at Two Fathom Rocks

�  This programme is the first in the Asian region where redundant oil platforms were made into intentionally built artificial rig reefs.

�  1994: A second "Rig Reef" made up of five redundant jackets was built at Two Fathom Rocks

Brunei Decommissioning 1: Summary



The most recent removals concern structures located in water depths ranging from

16m to 60m and with jackets weighing between 85 and 165 tonnes. These structures are:

� Ampa Field: SWA-7, SWA-8, SWA-9, SWA-18, SWA-35, SWA-150, AMVJ-2, AMPP-2

� Champion Field: CPVJ-1(A), CPVJ-7/11

� Fairley Field: FAVJ-1 (0)

� In 1994, a total of five redundant structures were removed and their jackets used to extend the artificial reef located in the ‘Two Fathom Rock Area’.

� Three of these installations, SWA-8, AMVJ-2 and SWA-35, were removed in April 1994.

� Two others, SWA-7 and SWA-9, were disposed of between July/August 1994.

Brunei Decommissioning 2



Based on a mutual agreement between the department and Brunei Shell Petroleum Co. Sdn. Bhd. (BSP), two redundant offshore oil platforms were placed on the seabed northwest of the original tyre reef at Two Fathom Rocks

Brunei Decommissioning 3 : Two Fathom Rock (Rig Reef) -1988



Brunei Decommissioning 4 : Two Fathom Rock (Rig Reef) 1994

There are nine structures within

100 meters

�  In 1994: A second "Rig Reef" was built at Two Fathom Rock near Jerudong.

�  This reef was made up of Brunei Shell five decommissioned jackets and four other platform structural components

�  SWA-6, SWA-7, SWA-9, SWA-35, SMV J2 (Deck elements also)



The platforms' upper surfaces are now covered in dendronephthya soft corals, and reef fish can be found in abundance. To the north of the structures lies a real coral reef and this can be seen from the platforms.

Brunei Decommissioning 5 : Two Fathom Rock (Rig Reef) Today




Indonesia



Indonesian Platform data*

*Referenced from: Guideline for Offshore Platform Decommissioning in Indonesia, DR. Gde. Pradnyana, BP Migas ASCOPE Platform Decommissioning, Hanoi, 25-27 February 2009

�  54 complete removals of platforms in Indonesia ??? �  16 Partial Removals (Deck Only)

�  Very limited information available



Indonesian Decommissioning 2: Some of the Structures Removed

Typical Single Monopod PA Platform




Australia



Australian Decommissioning Status To Date



Australian: Montara

�  7 March 2009 – failed cement shoe unno1ced

�  21 August 2009 – Well kick, uncontrolled flow of oil, gas, condensate

�  1 November – relief well intercept, fire on WHP, oil flow into ocean stopped

�  3 November ‘well kill’

Ref: “Building on the Lessons from Montara” Ken Fitzpatrick, CEO PTTEP AA

Sapura Acergy Presentation at 15.30 Today On MontaraJacket 6 Topside removal




New Zealand



�  Shell Todd Oil Services floating Maui B oil production vessel was decommissioned in April1996

�  STOS Maui FPSO (floating production storage and offloading) vessel Whakaaropai which has been permanently moored near the Maui B platform since 1996.

�  Maui will also continue to gas and produce light oil liquids in the form of condensate which is extracted from the gas flow

�  The Whakaaropai has been bought by Bergesen Worldwide Offshore and will be renamed the BW Endeavour.

New Zealand Decommissioning 1: MAUI B Oil Field



New Zealand Decommissioning 2: MAUI B Oil Field

Maui field is located 35 km off the Taranaki coastline. The field comprises two production platforms, Maui A and Maui B and, until April 2006, the FPSO (Floating Production Storage and Offloading) vessel Whakaaropai.




Japan



Japanese Decommissioning 1:

Field Operator Pla,orm Type InstallaGon WD Legs WTot Status St/up Remarks

Aga North

Japex Offshore Co. Ltd

Aga North Fixed

June 1984, by Nippon Steel ('Kuroshio')

90 12 4700 Removed 01-‐Oct-‐84 Integrated plaborm; jacket height 119m; 12 x 54" piles, 3000 mt.

Aga Japex

Offshore Co. Ltd

Aga Fixed July 1974, by Nippon Steel ('Kuroshio')

82 8 4860 Removed 01-‐Jan-‐76

Integrated plaborm with drilling, produc1on facili1es, helideck,

quarters, flare boom and two deck cranes; jacket height 85.7m; 8 x 48 "

piles, 2780 mt

Iwakioki

Teikoku Oil

Company Limited

Iwaki Fixed

June-‐Dec.1983; Heerema

(jacket, piles, conductors,

deck, topsides)

154 8 21000 Removed 01-‐Sep-‐84

Jacket height 170m; base 78 x 60m; conductor pipe 1200 mt, Hyundai; pipeline to shore; deck 1000 mt; 6 modules (gas, wellhead, 3 u1lity,

quarters/helideck) 3000 mt; 8 x 84 " piles, 12,900 mt



Japanese Decommissioning (2010) : Iwaki Platform

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