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Subsea templates installed on Maria fieldMilestone for Wintershall’s flagship development in Norway

Stavanger. Wintershall’s Maria development has reached a milestone in Norway with the installation of its two subsea templates on the ocean floor. The structures, each the size of a basketball court, were lowered beneath the waves in the Norwegian Sea after being sailed from Kristiansund in mid-Norway. 

The vessel Normand Oceanic sailed the 285 tonne templates 210 kilometers to the Maria field on the Halten Terrace, before craning the structures 300 meters below the ocean surface. 

“This is the first major subsea installation on the Maria field, unlocking the next phase in the development. Maria is a multifaceted project using innovative solutions to deliver maximum value while also utilizing existing infrastructure in the area. With the safe completion of this milestone on time and budget, we lay an important foundation towards planned first oil in Q4 2018,” said Hugo Dijkgraaf, Wintershall’s Maria Project Director. 

The Maria reservoir will be linked via subsea tieback to three existing platforms in the area. The Maria well stream will go to the Kristin platform for processing while supply of water for injection into the reservoir will come from the Heidrun platform and lift gas will be provided from Åsgard B via the Tyrihans subsea template. Processed oil will be shipped to the Åsgard field for storage and offloading to shuttle tankers. Gas will be exported via the Åsgard Transport System to Kårstø.

In addition to the template installation, the Normand Oceanic sailed to the Kristin field where it installed the subsea anchors required to anchor the dynamic umbilical riser, which will control the Maria subsea wells.

In the coming months, Wintershall will lay some 68 kilometers of subsea pipelines tying the Maria templates to the host fields. Modifications to the Kristin and Heidrun platforms are also due to be carried out this summer. Additional offshore marine installation including production pipeline laying and platform modifications will be performed in 2017. 

Read more

04.09.2015 Plan for Development and Operation for Maria approved

Government approval for Wintershall’s first operated development in Norway / BASF subsidiary moves ahead with field development

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