【Ten Years of Rapid Development in Chemical Engineering Equipment】Domestically produced X65QO steel pipes for 1,500-meter-depth offshore submarine pipelines from 1997 to 2019

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The last edit of this post was made by Desert Fish on June 26, 2023, at 08:24. There has been significant development in chemical processing equipment over the past decade; let’s praise the prosperity and strength of modern China. By contributing our ideas, we can create a more lively discussion environment. The HaiChuan forum becomes even better with your participation – everyone is welcome to engage in discussions here. Everyone should pay attention to safety and know how to handle emergencies. ********************************************* On November 29, 2019, a technical evaluation meeting for 1,500-meter-deep underwater pipeline pipes was held in Hengyang for the CNOOC Lingshui 17–2 gas field. The small-scale production and trial manufacturing of X65QO underwater pipeline pipes in various specifications by Hengyang Iron and Steel were approved by the expert panel. This is the first time in our country that efforts have been made to produce domestic pipelines for use at depths of 1,500 meters underwater. The project team responsible for the development of the Lingshui 17–2 gas field is working together with Hengyang Iron and Steel to advance into these deep-sea environments! The development of Lingshui 17-2, China’s first self-operated deep-water gas field offshore, has been accelerated significantly. With an average operating water depth of 1,500 meters, the main components of this gas field include an underwater production system, a semi-submersible platform, as well as associated submarine pipelines. Henggang Steel is the only domestic supplier of submarine pipeline pipes for the main pipelines of the Lingshui 17-2 project. Since the beginning of this year, Hengsteel has successively carried out small-scale production of X65QO submarine pipeline pipes in various specifications. At the appraisal meeting held in Hengyang this time, the Lingshui 17-2 project team presented an overview of the project as a whole. Hengyang Iron and Steel Company reported on the trial production of submarine pipelines as well as small-scale manufacturing. CNOOC Pipeline Engineering Technology Company and CNPC Pipe Materials Research Institute respectively presented the results of supervision activities and back-to-back tests. Experts from CNOOC Research Institute, China Classification Society’s Offshore Engineering Technology Center, CNPC Pipe Materials Research Institute, the Design Institute of Offshore Engineering Co., Ltd., as well as CNOOC’s Shenzhen and Shanghai branches listened to the presentations and raised questions regarding the key challenges and existing problems. The expert group fully affirmed the achievements made in pilot production and small-scale manufacturing, and provided the final evaluation results along with relevant suggestions. It was unanimously agreed that the small-scale production strategy and technical approach for the Lingshui 17-2 project are reasonable; all product specifications meet the requirements outlined in the project specification document and relevant standards, thus meeting the conditions for large-scale production. The leaders of CNOOC expressed their gratitude to Hengsteel for taking the initiative to undertake the domestic production trials and for providing strong support for the project. They hoped that both parties would support each other and deepen their cooperation in order to further advance the domestic production of deep-sea pipelines