China Oilfield Services Limited

Ship Owners
Ship Managers

China Oilfield Services Limited (COSL) is a prominent integrated oilfield service provider that operates primarily in offshore regions. The company, which is a subsidiary of the China National Offshore Oil Corporation (CNOOC), offers a wide array of services that cater to the exploration, development, and production phases of oil and gas fields. These services include but are not limited to:

Geophysical Services: COSL conducts seismic surveys and data interpretation to help identify hydrocarbon deposits beneath the Earth's surface.

Drilling Services: The company operates a fleet of drilling rigs, both offshore and onshore, facilitating exploratory and production drilling activities.

Well Services: These include well logging, cementing, and stimulation operations essential for preparing and maintaining oil and gas wells.

Marine Support and Transportation: COSL offers a range of marine services, including the transportation of personnel, equipment, and materials, as well as anchor handling and towing services for drilling rigs.

Technical Services and R&D: The company also engages in research and development to innovate and improve its service offerings, leveraging technology to enhance efficiency and reduce operational risks.

COSL's footprint extends beyond China, with operations in multiple regions worldwide, reflecting its ambition to be a global player in the oilfield services sector. The company is listed on the Hong Kong Stock Exchange and has garnered a reputation for reliability and excellence within the industry.

In recent years, COSL has also shown a commitment to sustainability and environmental responsibility, aligning itself with global trends and regulatory requirements aimed at reducing the environmental impact of oil and gas exploration and production.

Ships

HAI YANG SHI YOU 708

Research Ship | Flag: China | Port: TIAN JIN

NAN HAI 6

Column-stabilised Unit | Flag: China | Port: ZHANJIANG

NAN HAI JIU HAO

Column-stabilised Unit | Flag: China | Port: ZHANJIANG

Maritime News

Chevron Emerges as Winner in ExxonMobil Dispute Over Guyana Oil Field

14 hours ago

Chevron will proceed with its $53 billion acquisition of Hess, after it prevailed in a landmark legal battle against larger rival Exxon Mobil to gain access to the largest oil discovery in decades.Shares of Chevron were up 3.6% in premarket trading, with Hess gaining nearly 7.4%. Exxon shares were up 0.3%.CNBC first reported the arbitration outcome. An Exxon Mobil spokesperson confirmed to Reuters that Chevron prevailed in the mediation over Guyana oil assets.Chevron and Hess did not immediately respond to Reuters request for comment.

Germany’s Maritime Sector: Steady Growth Amid Global Headwinds

15 hours ago

Order intake, exports, and green technology demand fuel confidence for 2025Germany’s maritime equipment and offshore supply industry is posting steady growth in 2024 and setting an optimistic course for 2025, according to new figures released by the VDMA Marine Equipment and Systems Association.With an average turnover increase of 5.5% in 2024, German maritime suppliers are proving resilient in the face of global supply chain volatility, geopolitical tensions, and a fiercely competitive international market.

China Shipbuilding Market Share Drops 20% Amid USTR Port Fees Concerns

2 days ago

Chinese shipyards’ market share has dropped from 72% to 52% in the first half of 2025 amid growing concerns over the impact of US Trade Representative (USTR) port fees on Chinese ships, according to the latest report from BIMCO, the world’s largest shipping association.USTR port fees, set to take effect in October 2025, will impact both Chinese owners and operators, as well as ships built in China, BIMCO said.Smaller Chinese-built ships will be exempted from fees, depending on sector-specific criteria, along with exemptions for short haul voyages.Global newbuilding contracting in terms of Compensated Gross Tonnage (CGT) dropped 54% y/y during the first half of 2025.

U.S. Shipbuilding, Maritime Dominance Requires a New Ecosystem

2 days ago

With all the Legislative fanfare, Executive Orders, Committee meetings, lobbying efforts and media announcements concerning American Shipbuilding, Naval Warfare and Maritime Dominance, it is no surprise that the result of the uproar is shear confusion within the maritime industrial base (MIB). The April 9, 2025 Executive Order Restoring America’s Maritime Dominance lists more than several reports to the President due within 90 days. Following those initial updates other reports are due at 180 and 210 days. The industry as a whole has not seen references to any of the reports being completed.

Seatrium Makes First Turnkey FPSO Delivery to Petrobras

3 days ago

Seatrium has announced the impending delivery of Petrobras 78 (P-78), the first of a series of turnkey floating production, storage and offloading (FPSO) units to Petrobras.The sailaway ceremony took place two weeks ago at Seatrium’s Singapore yard. Upon delivery, the P-78 will be deployed in Brazil’s prolific Buzios field, the largest deepwater oil field globally, with a production capacity of 180,000 barrels of oil per day (bopd), 7.2 million cubic metres (mcbm) of gas per day, and a storage capacity of 2 million barrels of oil.The P-78 will rank among the largest in the global operating fleet of FPSOs.