Quick Enquiry

SHARE THIS

Axess Engineering completes Caisson Replacement Project for Wintershall

Axess Engineering has successfully completed the replacement of seven caissons at Wintershall’s Brage offshore platform in October 2018. The caisson replacement project was one large brick in Wintershall’s life time extension project, enabling the 25-year old jacket installation to keep producing to 2030 and beyond.

Corrosions that have developed inside the caissons have jeopardized its integrity. Given the high-level of risks and uncertainties, Wintershall needed an alternative solution to replace the caissons in the safest and most cost-efficient way possible.

Axess has introduced a completely new way of approaching this pervasive challenge. In 2017, the Engineering team carried out an innovative and climate-efficient method of replacing the caissons–

reducing the use of support vessels and performing the lifting operations below the platform deck with the aid of a specialized Construction ROV (CROV).

Axess developed a method according to the High-Risk Application, Annex K in NORSOK R002. This added safety measures such as lifting above pressurized equipment, double load path, fail-safe, etc. Axess also made a lifting system to catch potential parts that have fallen off after a breakage in one of the caissons. The lifting clamps were custom-designed to provide a complete material handling solution—a more factory way of thinking rather than the conventional offshore project approach.

Fredrik Rakvåg, Service Development Manager at Axess, said: “Together with our partner, we have designed and pre-fabricated a CROV with cleaning, cutting, torqueing, and clamp capabilities. It was also built with hot-stab tooling interaction so it could change out subsea equipment by itself.”

The capabilities of the bespoke CROV exceed the weather-sensitive limitations of large ROV systems on IMR vessels as it can clamp itself to the structure and can carry out mechanical work within a greater operational window. Not only is the solution a much cheaper alternative to the US$100,000 IMR vessel day rate, it also concurrently reduces CO2 emissions.

“This has been the largest EPCI contract in the history of Axess. Congratulations to everyone involved in this project! We want to thank Wintershall for the confidence in our innovative solution and engineering capabilities. This strategic partnership opens a market opportunity for the Axess Engineering’s methodology in the Oil and Gas industry,” added Rakvåg.

Axess also installed a caisson on the Brage platform in 2012/2013—the price tag for that project was approximately the same as replacing the seven caissons in 2017/2018. The key differences were:

  • The interface between Wintershall and Axess
  • Method-based approach compared to the traditional set up
  • Finding a more innovative solution to the major cost drivers

Both projects were completed without any harm to personnel or assets, however, the overall HSE risks and financial aspect of the recent project were much lower compared to the project in 2012/2013.

Get in touch with our Engineering team. Email us at post@axessgroup.com for more information about the project.


 

Contact Information

Molde
Axess AS
Oscar Hanssens vei 5
6415 MOLDE
+47 982 43 600
Aberdeen
Axess North Sea Ltd.
Units 6 & 19 Robert Leonard Centre
Howe Moss Drive, Kirkhill Industrial Estate, Dyce AB21 0GG, UK
(duty): +44(0) 7912212854
St. John's
Axess Baffin Inc.
702 Water Street, Suite 201
St. John's, Newfoundland
+1 709 758 7937
Bergen
Axess AS
Kokstadflaten 35
5257 Bergen
(duty): +47 976 88 578
Houston
Axess North America Inc
15915 Katy Freeway, Suite 501
77094 Houston, TX
+1 (281) 994-0367
Ciudad del Carmen
Axess De México
+1 (281) 994-0367
Stavanger
Axess AS
Koppholen 25, 4313 Sandnes
Stavanger, Norway
(duty): +47 982 43 600
Rio de Janeiro
Axess do Brasil Ltda
Rua Dezenove de Fevereiro
171 - Botafogo
CEP 22280-030 Rio de Janeiro
+55 (21) 4108-0532
Accra
Axess Petrorig Ghana Limited
3rd floor, The Pelican
8 Blohum Street, Dzorwulu, Accra, Ghana
+233 (0) 30 397 0548
Luanda
Rainha Ginga
127 Luanda, Angola
+27 82 202 5266
Cape Town
Axess Africa Ltd.
1 Nares Street
Observatory
7925 Cape Town
+27 82 202 5266
Trondheim
Axess AS
Nedre Bakklandet 58C
7014 Trondheim
(duty): +47 982 43 600
Orkanger
Axess AS
Grønøraveien 1
Orkanger
7300 Orkanger
(duty): +47 41 78 06 30
Oslo
Axess AS
Filipstad Brygge 1, 3rd Floor
0252 Oslo, Norway
(duty): +47 982 43 600
Busan
Axess Offshore Korea LLC
#103 (Aju-dong Hyunjin Evervil) B1 Yang 1-gil, Geoji-Si
Gyeongsangnam-do, South Korea
+82 10 2696 2016
Mumbai
Axess Offshore (Mumbai)
WeWork, Building Zenia
Unit No. 5-119 Hiranandani Circle
Hiranandani Estate
Thane, Maharashtra 400607, India
Singapore
Axess Offshore Pte Ltd
Nordic European Centre #05-31 South Wing
3 International Business Park
609927 Singapore
+65 6908 4174
Perth
Axess Offshore Australia Pty Ltd
304 Newcastle St
Perth WA 6000
+61 4 3373 0739
Perth
Axess Offshore Australia Pty Ltd
140 St Georges Terrace L28,
Perth WA 6000
+61 4 3373 0739
Map of DepartmentsMoldeAberdeenSt. John'sBergenHoustonStavangerVillahermosaRio de JaneiroAccraLuandaCape TownTrondheimOrkangerOsloBusanMumbaiSingaporePerth