海恒 CJ50‑2是GustoMSC设计、招商局重工（江苏）为天津海恒海工建造的400英尺自升式钻井平台，2013年签约、2016 年交付，单座造价约1.85亿美元。作业水深122米（400英尺），最大钻井深度10668米（35000英尺），配备四桁架式桩腿与电液升降系统，甲板可变载荷约4285吨。具备悬臂外飘与高自动化钻井系统，可适应北海、南海等恶劣海域，满足油气勘探开发与修井作业需求，是国内首批自主建造的高端自升式平台，填补国内技术空白。

Haiheng CJ50‑2 is a 400-foot jack-up drilling platform designed by GustoMSC and constructed by China Merchants Heavy Industry (Jiangsu) for Tianjin Haiheng Offshore Engineering. Signed for construction in 2013 and delivered in 2016, the unit carried a construction cost of approximately 185 million US dollars.

It features an operating water depth of 122 meters (400 feet) and a maximum drilling depth of 10,668 meters (35,000 feet). Equipped with four truss-type legs and an electro-hydraulic jacking system, it has a variable deck load of roughly 4,285 metric tons.

Fitted with an extended cantilever and highly automated drilling systems, it can operate in harsh sea areas such as the North Sea and South China Sea, meeting the demands of oil & gas exploration, production development and workover operations.

As one of China’s first domestically built high-end jack-up platforms, it filled key gaps in domestic technological capabilities.