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来源：Offshore Energy 2024-06-07 

翻译：国际海事新闻网 檀智 张运鸿 

 

        总部位于瑞士的海上管道安装、重型吊装和海底建设承包商Allseas已确认，其一艘船只在澳大利亚沿海的天然气开发项目上的管道敷设任务已经结束。

 

        在发生法律纠纷后，巴罗莎天然气输出管道（GEP）项目于2024年1月获得了法院的批准，这为澳大利亚的Santos公司亮起了绿灯，使其可以继续进行Allseas于2019年9月获得合同的计划工作。

 

        因此，这家瑞士公司的Audacia管道敷设船得以在S模式下安装了有史以来最大的PLET，同时在Fortitude、Alegria、Felicity和Fortress等船队的帮助下，铺设了262公里长的巴罗莎GEP。

 

        据Allseas称，其Audacia团队在澳大利亚其他船队的协助下，通过安装第二个PLET，已经完成了蒂默海南部的262公里天然气输出管道。

 

        “我们的专业团队在世界上最偏远的环境之一中工作，供应链绵延数千公里，还要面对高湿度和极端的潮汐波动等困难，但他们成功完成了任务，”这家瑞士公司强调说。

 

        Audacia通过将对新安装的输出管道的勘测和测试工作交给Fortitude团队，从而结束了海上作业。这条直径为26英寸的管道将把巴罗莎油田开发项目与未来的达尔文管道复线连接起来，将天然气输送到澳大利亚北领地的达尔文液化天然气设施。

 

        该项目的最终投资决策（FID）于2021年做出，推动了达尔文液化天然气（LNG）寿命延长和管道连接项目的6亿美元投资，以将设施寿命延长约20年。巴罗莎项目由Santos（运营商，占50%）、SK E&S（占32.5%）和JERA（占12.5%）组成的合资企业拥有。

 

        巴罗莎开发项目计划于2025年上半年首次供气，将包括一个浮式生产、储存和卸货（FPSO）装置、海底生产井、支持的海底基础设施，以及一条连接到现有巴尤-昂丹至达尔文LNG管道的气体出口管道。

 

        BW Offshore获得了一份为期15年的固定FPSO合同，价值46亿美元，并附有额外的十年延长期选项，负责建造FPSO BW Opal，该FPSO将用于从澳大利亚油田开采天然气。

 

        “Allseas在澳大利亚水域安装复杂的管道系统已有20多年的历史，但巴罗莎是我们在北领地的首个项目，预示着未来还有更多项目在望，”Allseas强调说。

 

        几个月前，Allseas的Pioneering Spirit船在毛里塔尼亚和塞内加尔近海的BP超大深水Tortue Ahmeyim（GTA）LNG项目中完成了工作，该项目最近迎来了将用于该巨型气田的FPSO的到来。

 

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Switzerland-headquartered offshore pipeline installation, heavy lift, and subsea construction contractor Allseas has confirmed the end of a pipeline assignment for one of its vessels on a natural gas development project off the coast of Australia.

 

Following brushes with the law, the Barossa gas export pipeline (GEP) project received the court’s blessing in January 2024, giving Australia’s Santos the green light to proceed with planned work for which Allseas secured a contract in September 2019.

 

Thanks to this, the Swiss player’s Audacia pipelay vessel was able to install its largest-ever PLET in S-mode while laying the 262-kilometre-long Barossa GEP with the help of its support team of vessels, encompassing Fortitude, Alegria, Felicity, and Fortress.

 

According to Allseas, its Audacia team has completed the 262-kilometer gas export pipeline in the southern Timor Sea with assistance from the rest of the Australian fleet by installing the second PLET.

 

“Operating in one of the most remote environments in the world, with a supply chain stretching thousands of kilometres, and faced with high humidity and extreme tidal fluctuations, our dedicated teams delivered,” highlighted the Swiss firm.

 

Audacia signed off on the offshore campaign by passing the baton to the Fortitude team to survey and test the newly installed export pipeline. This 26-inch diameter pipeline will connect the Barossa field development to the future Darwin Pipeline Duplication, transporting natural gas to the Darwin LNG facility in Australia’s Northern Territory.

 

The FID for the project, taken in 2021, set the ball rolling for the $600 million investment in the Darwin LNG life extension and pipeline tie-in projects to extend the facility life for around 20 years. The Barossa project is owned by a joint venture between Santos (operator, 50%), SK E&S (32.5%), and JERA (12.5%).

 

With the first gas targeted for the first half of 2025, the Barossa development project will consist of a floating production storage and offloading (FPSO) unit, subsea production wells, supporting subsea infrastructure, and a gas export pipeline tied into the existing Bayu-Undan to Darwin LNG pipeline.

 

A 4.6 billion fixed 15-year FPSO contract, with additional ten-year extension options, put BW Offshore in charge of building the FPSO BW Opal, which will be used for natural gas production from the Australian field.

 

“Allseas has been installing complex pipeline systems in Australian waters for more than 20 years, but Barossa marks our inaugural project in the Northern Territory, with the promise of many more on the horizon,” emphasized Allseas.

 

A few months ago, the Swiss player’s Pioneering Spirit vessel crossed the finish line at BP’s ultra-deepwater Greater Tortue Ahmeyim (GTA) LNG project offshore Mauritania and Senegal, which recently welcomed the arrival of the FPSO destined to work on the giant gas field.
 

来源：simic