中国首个海上注碳增气平台主体建造完工

中国首个海上注碳增气技术示范项目取得重要进展。东方1-1气田新建中心平台主体建造已完工，现已进入调试阶段1。该平台将采用全球首创的"低温精馏+膜分离"天然气脱碳技术1，通过捕集提纯开采伴生的二氧化碳后加压回注地层，每年可在海底地层封存二氧化碳超100万吨1。

新建中心平台规模庞大，重近1.7万吨，高逾28层楼，甲板总面积超1万平方米1。与传统脱碳工艺相比，该平台的能耗降低20%1，同时天然气采收率将提高超12%1。该平台投用后将关联东方13-2、东方29-1等12座平台1。东方1-1气田自2003年建成投产以来累计产气超500亿立方米1。

China has finished construction of the main structure of its first offshore carbon capture and gas enhancement demonstration project, the new central platform for the Dongfang 1-1 gas field, which has entered the commissioning phase 1. The platform will capture and purify carbon dioxide produced alongside oil and gas extraction, then reinject it into subsurface formations at high pressure, enabling the sequestration of over one million tons of CO2 annually in seafloor geological layers while simultaneously increasing natural gas recovery rates 1.

The new central platform weighs approximately 17,000 tons and stands taller than a 28-story building, with a total deck area exceeding 10,000 square meters 1. It incorporates a globally first-of-its-kind "low-temperature distillation plus membrane separation" natural gas decarburization technology 1. This approach achieves a natural gas recovery rate improvement exceeding 12 percent while reducing energy consumption by 20 percent compared to conventional decarburization methods 1. Once operational, the platform will be linked to 12 other platforms including Dongfang 13-2 and Dongfang 29-1 1.

The Dongfang 1-1 gas field, which commenced production in 2003, has cumulatively produced more than 50 billion cubic meters of natural gas 1.