On September 19th, China National Offshore Oil Corporation (CNOOC) announced that the China's first deepwater oilfield secondary development project—the Liuhua 11-1/4-1 Oilfield Secondary Development Project in the Pearl River Mouth Basin—has commenced production. This milestone signifies China's breakthrough in the economic and efficient development of deepwater oilfields, enhancing the nation's global leadership in the design, construction, and installation of deepwater oil and gas equipment. It also provides robust support for ensuring national energy security and developing new quality productive forces in the marine energy sector.
Haikui-1
Haikui-1
At 9:28 AM on the day of the launch, an underwater robot activated a subsea production tree over 300 meters deep, connected to Asia's tallest deepwater jacket platform, "Haiji-2". The crude oil, processed through the production system and pre-treated on "Haiji-2," was then transported to Asia's first cylindrical floating production, storage and offloading (FPSO) facility,"Haikui-1", located 2.5 kilometers away. The ignition of the flare signaled the official start of the project.
Haiji-2
The Liuhua 11-1 Oilfield, which has been in operation since 1996, now enters its 28th year. The redevelopment includes both the Liuhua 11-1 and Liuhua 4-1 oilfields, at an average water depth of around 305 meters. The project plans to develop 32 wells, with an expected peak daily production of 2,700 tons of crude oil, extending the oilfield's life by an additional 30 years.
Haiji-2
Technology-wise, the project has pioneered an innovative "Deepwater Jacket Platform + Cylindrical FPSO" development mode, significantly reducing the high costs and technical difficulties traditionally associated with deepwater oilfields, and greatly improving efficiency. Both "Haiji-2" and "Haikui-1" are equipped with world- class technology, highlighting China's advancements in deepwater oil and gas exploration.
The implementation of this project not only marks progress in China's deepwater oilfield development technologies but also offers a "Chinese solution" for the efficient development of similar deepwater oilfields worldwide.
Source: Lingnan on the Cloud
中國第一個深水油田二次開發計畫投產
9月19日，中國海洋石油集團（中國海油）宣布，中國第一個深水油田二次開發計畫——流花11-1/4-1油田二次開發計畫在珠江口盆地正式投產，標誌著中國成功開創了深水油田經濟高效開發的新模式。這一計畫不僅提升了中國在深水油氣裝備設計、建造和安裝方面的世界領先水平，也為保障國家能源安全和加快海洋能源新質生產力提供了強有力支撐。
投產當天上午9時28分，水下機器人在亞洲最高的深水導管架平台「海基二號」上開啟了300多米深的水下采油樹。原油透過生產處理系統，經過「海基二號」預處理後，輸送至2.5公裏外的浮式生產儲卸油裝置「海葵一號」，點燃的火炬標誌著計畫正式啟動。
流花11-1油田自1996年投產以來，已有28年歷史。此次二次開發不僅包括流花11-1油田，還涉及流花4-1油田，水深約305公尺。計畫共計劃開發32口油井，預計高峰日產原油2700噸，延長油田開采壽命30年。
技術方面，計畫創新性采用了「深水導管架平台+圓筒型FPSO」的開發模式，降低了傳統深水油田開發的高成本與技術難度，極大提高了效率。裝備「海基二號」和「海葵一號」具備世界先進水平，彰顯了中國在深水油氣開發領域的技術進步。
計畫的成功實施不僅推動了中國深水油田開發技術的進步，還為全球類似深水油氣田的高效開發提供了「中國方案」。
文、圖｜記者 王磊 通訊員 吳昊
譯｜趙凡
英文審校 | 麥芯羽
