【Major Industrial Equipment in the Chemical Industry】432 – China’s first domestically developed shallow-water underwater control module was successfully tested

It’s tough in the scorching summer heat! Keep up with heat prevention and cooling! Clarify the key tasks! Safety analysis must not be neglected! ---------------------------------------------- The past decade has been a period of rapid development in China’s chemical industry, with the emergence of many new processes, products, and equipment. China’s chemical processing equipment has also seen significant progress, which has contributed to the swift advancement of the petrochemical sector. Here, we have compiled some of the achievements and breakthroughs made by Chinese equipment manufacturers in terms of larger-scale production and greater use of domestic equipment. We invite everyone to share their insights and discuss these topics together; let’s cheer for Made in China and support the development of chemical processing equipment! ------------------------------------------------------ 【Major Chemical Equipment in a Major Country】Series Summary Post – Being Updated https://bbs.hcbbs.com/thread-3366481-1-1.html (Source: Huahai Chuanliu – Haichuan Network)

The underwater control system is a core device in the production of offshore oil and gas fields. It controls the opening and closing of underwater valves, collects signals such as temperature, pressure, and flow rate from the underwater production system, and acts as the \"brain\" of the underwater oil and gas production system. It is an essential piece of equipment in the underwater development approach for offshore oil and gas fields, and its manufacturing processes and quality levels have a direct impact on the safety, reliability, and cost-effectiveness of oil and gas field development. An Weizheng, a scientific research and technical staff member at CNOOC Research Institute, told reporters that this set of shallow-water underwater control modules will be used in the development of the Bohai Sea gas field. Aiming to achieve the localization of underwater control modules, the R&D team took into account the special environmental conditions in the Bohai Sea. Through multiple rounds of simulation and experimental verification, they overcame industry-related challenges such as compact design, precise control, and reliability analysis. They completed the design, processing, assembly, and testing of composite electro-hydraulic underwater control modules, thereby developing a R&D technology system that possesses entirely independent intellectual property rights in China. Chen Hongju, the key member of the R&D team, explained that taking into account the characteristics of shallow waters, the team adapted its approaches to the local conditions, achieving several \"firsts in China\". For the first time, the underwater control module was separated from the tree and designed independently, which simplified the size of the tree while enabling remote control of it by the underwater control module. For the first time, both optical fiber and power line communication methods are integrated into the control module, with seamless switching achieved, thereby ensuring the reliability of communication between offshore production platforms and underwater production systems. Fault diagnosis and prediction for control modules were achieved for the first time, completing Underwater Intelligence 1.0. For the first time, an underwater control module was designed with information security in mind, and it passed tests and certifications conducted by authoritative agencies. “Reliability is a key indicator for control systems, especially for internal electronic modules, which are required to ensure the proper functioning of the control system even under extremely harsh conditions,” said Chen Hongju. “To that end, we’ve put a lot of effort into our product. The product must undergo 10 cycles in an incubator ranging from -18°C to 70°C, operate continuously for 48 hours under extreme high and low temperatures, and remain under pressure in a high-pressure chamber for 6 hours, all while maintaining stable performance. “Compared with similar foreign products, the shallow-water underwater control module developed independently in China has a 10% lower weight, a 30% lower cost, and a delivery time that is 50% shorter; moreover, the technical service fees are a fraction of those charged abroad. ” Mi Lijun, the project leader at CNOOC Research Institute, said that the successful development of these shallow-water underwater control modules in China will break the long-term monopoly held by a few Western companies, making it possible for China to utilize underwater production system approaches to exploit oil and gas resources in shallow-water, restricted areas. To meet the need for domestic production of high-end offshore oil and gas equipment in order to increase oil and gas reserves in China, CNOOC began working on the development of underwater control modules in 2011. Through technical accumulation and experience gained during the 12th and 13th Five-Year Plans, the design principles of underwater control modules were initially understood, and China’s first prototype of such a module was successfully developed. In 2021, CNOOC Research Institute upgraded the prototype of the underwater control module into an engineering-grade product for shallow-water use, making it one of the few companies in the world capable of developing such modules. This development will fundamentally change the situation in which China’s advanced marine oil and gas equipment is dependent on others. Mi Lijun said that the successful development of the shallow-water underwater control module equips China’s underwater oil and gas production systems with their own \"most powerful brain.\" It opens up new ways of operating in shallow-water oil and gas fields, and provides \"Chinese solutions\" for the practical application of key marine equipment. This will greatly accelerate the development of reserves in China’s shallow-water offshore areas, serving as a solid energy foundation and technical barrier for optimizing the allocation of oil and gas resources and promoting socioeconomic development. (Source: CNOOC Research Institute)