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Åsgard A: Advanced overhaul of a 120 ton riser pull in winch

 

The riser pull in winch at Åsgard A had been unused since 1997 and needed to be overhauled to be able to contribute to increased production at the FPSO. In limited time, Axess delivered quality and demonstrated complementary competence, making this project a success.

Increased production

The Axess contract deals with the Åsgard Subsea Compression Topside Modifications project on both Åsgard A and B. The overall objective is electrical supply to Åsgard Subsea compression units, encompassing subsea equipment such as compressors and pumps, and as a result increases the production capacity.

The overhaul of the riser pull in winch was a part of the Åsgard Subsea Compression Topside Modification Project, which Aker Solutions has for Statoil. Axess’ scope was to evaluate the winch, perform a full service and prepare it for operation. The winch is used to pull in and release risers and an upgrade of this system was necessary to enable Åsgard A to increase its production capacity.

-First we conducted a survey of the equipment and made a detailed scope of the overhaul. El motors, Hydraulic, motors, pumps and valves etc. were dismantled and sent to overhaul onshore. The parts went through service and returned to the FPSO. We used component suppliers and partners on factory overhaul and own employees offshore, says Johan Martin Gaupseth, project leader in Axess.

From start to finish

The project involved complicated lifting operations and special adapted procedures, which demanded close cooperation between several departments in the company. That is one of the benefits for both Axess and its customers. Axess has the competence to contribute in all phases. The company’s engineering competence on hydraulics, mechanics, electro, lifting operations, access technique and delivering service personnel/winch operators and competent persons, who followed the whole process, has been a success factor. 

-Our customers should know that by involving Axess, they get a partner who can take responsibility for processes from start to finish. We’re not simply a provider of services. We are a partner who contributes to long term value for our customers and reduces the number of mobilizations, says Stian Blø, Service Manager for cranes in Axess. 

Close cooperation

In this project, Axess had eight engineers involved at different stages, who have worked closely with the customer, Aker Solutions. Working during the winter has been challenging due to bad weather. At the same time, the project was accelerated as it was decided to start riser pull in operations earlier than first planned.

-Our response time was short, but we have a great network of partners who deliver in short time. We figured out solutions along the way both on the scope and technical challenges. For example, a safety tool called carpenter stopper was mobilized in conjunction with riser pull in, which lacked proper procedures and documentation. The solution was that we made new procedures, performed extensive testing and made new documentation to get it approved. Lack of time must not be at the expense of quality, although it is challenging to solve within the framework provided in the regulations, says Blø.

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): +47 982 43 600
Houston
Axess North America Inc
15915 Katy Freeway, Suite 501
77094 Houston, TX
+1 (281) 994-0367
Ciudad del Carmen
+1 832 970 3748
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
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 8929 2016
Mumbai
Axess Offshore (Mumbai)
Alpha, 2nd Floor Unit No. 201
Hiranandani Gardens Powai, Mumbai
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
140 St Georges Terrace L28,
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
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