INNOVATIVE THINKING AND AMBITIOUS PLANS
Innovative thinking and ambitious plans have been associated with Jåttåvågen for several decades. The story continues today, with development of Hinna Park Phase 1 nearing completion and Phase 2 almost upon us.
The production of Condeep platforms began in Jåttåvågen in 1973, and to many people epitomises the North Sea oil adventure. Today, Det skjeve tårn (“the leaning tower”) still stands as a reminder of the innovation and commitment of that era.
In 1995, Troll was the last Condeep to be constructed in Jåttåvågen. In 1998, Stavanger Municipality resolved to make the area into a new urban district, thus beginning a new chapter in the story of Jåttåvågen and Hinna Park.
THE PERIOD FROM 1971-1995
Oil was found in the Ekofisk field in the North Sea in 1969, and a new industrial epoch began in Norway. A concrete platform became a key element in the expansion of the first oil field in the North Sea, and the establishment of Stavanger as an oil town. The Ekofisk tank, designed by the French company Doris and built by Selmer and Høyer Ellefsen in a rapidly-established building dock in Jåttåvågen, was delivered to Phillips Petroleum in summer 1973.
This provided the impetus for the construction of a series of platforms known as Condeep, produced by Norwegian Contractors. Rogaland was a suitable construction site for these, with a large dry dock in Hinnavågen and nearby deep fjords (Gandsfjorden and Vats) for finishing and towing. A total of 15 concrete platforms were built by Norwegian Contractors[ED1] (now Kværner) at Hinna in the period 1971–1995.
The concrete platforms in Hinnavågen led to a development of oil-related mechanical industry and helped to make Stavanger a natural hub of the Norwegian oil and gas business. The authorities in Stavanger contributed greatly to the rapid establishment of the necessary facilities and services to provide competitive solutions in a new market.
The Ekofisk Tank
Once the Ekofisk field was declared commercially exploitable in 1970, a solution had to be found as to where and how to transport the oil from the oil field. As it was not feasible to have a pipeline on the field at the time production was due to start, an intermediate storage tank was required for the crude oil in order to prevent production stoppages. Thus, the concept of the Ekofisk tank was born. Ultimately, the solution was developed by the French company Doris, and the tank was built in Jåttåvågen after fast-tracking by Stavanger Municipality. The tank was in place on 1 July 1973.
Det skjeve tårn
Det skjeve tårn (“the leaning tower”) is Stavanger's first (and largest) signal building. It was the result of an experiment to demonstrate the feasibility of slip form casting of large, sloping structures of variable diameters – deemed to be the best solution for the Troll A platform. The slip form casting was done in February 1984, and the resultant tower was 50 m tall. Its diameter varies from 16 to 23 m and the maximum angle of inclination is 16º (three times greater than the Leaning Tower of Pisa!).
Gullfaks C is the world's heaviest oil platform to be moved by humans. The platform stands 216 m deep in water and the concrete structure is 262 m tall. It took 240,000 m3 of concrete and more than 70,000 tonnes of reinforcing – 10 times the amount of steel used for the Eiffel Tower! When it was towed out in June 1989, the platform weighed more than 1.5 million tonnes, and it had taken more than 2,500 FTEs to produce the concrete giant.
TROLLTroll A stands more than 300 m deep in water, and is the largest structure in the world ever to have been moved. The platform is almost as heavy as Gullfaks C, but it towers 472 m from the bottom to the top of the flare stack. Completed in 1995, Troll was the last of the big giants delivered from Jåttåvågen.
Troll A stands more than 300 m deep in water, and is the largest structure in the world ever to have been moved. The platform is almost as heavy as Gullfaks C, but it towers 472 m from the bottom to the top of the flare stack. Completed in 1995, Troll was the last of the big giants delivered from Jåttåvågen.
Hinna park today
Two special monuments to the oil era have been incorporated into the first phase of the expansion of Hinna Park. First and foremost, a Condeep avenue has been created as a salute to all the concrete structures built in Hinnavågen from the Ekofisk tank to the Heidrun platform – this can be seen along the marina behind the training ground of the Viking football club. On the quay, further along from the entrance to the area, a key quotation has been highlighted from the very first announcement on Norwegian oil policy in the Norwegian Parliament: “We must ensure that the oil age becomes an epoch – not merely an episode”.
The final addition to the oil mementos in Hinna Park is Olav Olsens Plass (Festplassen) with its elegant monument to the Draugen platform. The latest Hinna Park projects as well as future projects have also been named after drilling platforms and oil fields: Troll
, Ormen Lange
The entire area is well worth a Sunday stroll – and how about a trip up the leaning tower while you are at it?
Photos and historical texts were obtained from sources including the following:
Øyvind Steen: «På dypt vann – Norwegian Contractors», 1993
Øyvind Steen: «Den frie tanke», Byggenæringens Forlag AS, 2002
Kristin Øye Gjerde: «Stavanger er stedet – Oljeby 1972 – 2002», Norsk Oljemuseum, 2002
Bjørn Vidar Lerøen: «34/10 Olje på norsk – en historie om dristighet», Statoil, 2006
Harald Tønnesen/Gunleiv Hadland: «Kulturminneplan for petroleumsvirksomheten på norsk sokkel», Norsk Oljemuseum, 2010