4月21日，中国海油金湾“绿能港”二期项目5座27万立方米LNG（液化天然气）全容储罐及配套接收设施安全投产，标志着华南地区规模最大LNG储运基地全面投入使用。

On April 21st, the second phase project of the "Green Energy Port" in Jinwan of China National Offshore Oil Corporation successfully completed the safe commissioning of 5 270,000-cubic-meter LNG (liquefied natural gas) full-capacity storage tanks and their supporting receiving facilities. This marks the full operation of the largest LNG storage and transportation base in South China.

二期项目全面投产后金湾“绿能港”整体LNG年处理能力达到700万吨总储气量提升至10.98亿立方米将显著增强粤港澳大湾区及华南地区的天然气保供能力有力支撑区域经济高质量发展与绿色能源转型。

After the full-scale production of the second phase project, the overall LNG processing capacity of "Green Energy Port" in Jinwan will reach 7 million tons per year, and the total storage capacity will increase to 1.098 billion cubic meters. This will significantly enhance the natural gas supply capacity for the Guangdong-Hong Kong-Macao Greater Bay Area and the southern region, and provide strong support for the high-quality development of the regional economy and the transition to green energy.

全球最大储罐群建成

The world's largest tank complex has been completed.

二期项目同时建设5座27万立方米LNG储罐，面临多工序动态耦合、施工界面交叉、塔吊高密度集群作业等一系列施工调度难题。建设过程中，项目团队采用数字孪生模型实时统计、推演和预测各储罐施工进度，动态优化施工计划；同时应用9镍钢内罐全位置自动焊接技术，创造了27万立方米LNG外罐标准层施工与内罐安装施工均用时最短的纪录。

The second phase project is constructing 5 270,000 cubic meter LNG storage tanks simultaneously. It faces a series of construction scheduling challenges such as dynamic coupling of multiple processes, overlapping construction interfaces, and high-density cluster operations of tower cranes. During the construction process, the project team used a digital twin model to statistically, simulate and predict the construction progress of each storage tank in real time, and dynamically optimize the construction plan; at the same time, they applied the 9-nickel steel inner tank full-position automatic welding technology, creating a record of the shortest total construction time for both the standard layer construction of the 270,000 cubic meter LNG outer tank and the installation of the inner tank.

“零放空”预冷破纪录

"Zero venting" achieves record-breaking pre-cooling

据介绍，二期项目全面采用拥有中国海油完全自主知识产权的CGTank?储罐核心技术。

It is stated that the second phase project fully adopts the CGTank? storage tank technology with complete independent intellectual property rights of China National Offshore Oil Corporation.

在调试阶段，项目团队创新实施了“零放空”预冷系统方案。该方案依托群罐投产的规模化优势，通过BOG（蒸发气）对氮气进行充分置换，并利用多座尚未投产的储罐作为BOG储存中转站，实现流量的精准调节，进而减少LNG损耗。

During the debugging phase, the project team innovatively implemented the "zero venting" pre-cooling system solution. This solution leveraged the large-scale production advantages of the group tanks, fully replacing nitrogen with BOG (evaporative gas), and using multiple unlaunched storage tanks as intermediate storage stations for BOG, enabling precise regulation of the flow rate and thereby reducing LNG losses.

项目相关负责人表示，“零放空”预冷方案同样可在单罐预冷中显著降低LNG损耗，对今后新建LNG项目预冷调试具有重要推广价值。

The project's relevant person in charge stated, "The 'zero venting' pre-cooling scheme can also significantly reduce LNG losses during the pre-cooling process of a single tank, and it holds significant promotional value for the pre-cooling commissioning of new LNG projects in the future."