重要内容提示： 一、对外投资概述 （一）本次交易概况 证券代码：601808 证券简称：中海油服 公告编号：临 2026-001 1. 本次交易概况 中海油田服务股份有限公司 关于对 COSL Norwegian AS 的债权转为股权投资的公告 1 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述 或者重大遗漏，并对其内容的真实性、准确性和完整性承担法律责任。 COSL Norwegian AS 为公司全资子公司 COSL Hong Kong International Limited 下属全资子公司 COSL Singapore Limited（以下简称"CSL"）的全资 子公司，负责挪威地区的业务开展。截至本公告披露日，CSL 持有 COSL Norwegian AS 的 100%股权。 公司拟将截至 2025 年 8 月 31 日对 COSL Norwegian AS 的债权转为股权投资， 并与 COSL Norwegian AS 签署债权转股权协议，转股债权金额为 745,738,539.87 美元（按照 2025 年 12 月 31 日中国人民银行美元兑人民币汇率中间价 1：7.0 ...

Core Viewpoint - The company is converting its debt of USD 746 million into equity investment in COSL Norwegian AS, enhancing its strategic position in the Norwegian market [1][2] Group 1: Investment Details - The debt amount being converted into equity includes a principal of USD 648 million and interest of USD 97.845 million, with a conversion price set at 1.00 Norwegian Krone per share, resulting in the issuance of 7.533 billion shares [1] - Post-investment, the company and CSL will hold 83.02% and 16.98% of COSL Norwegian AS, respectively [1] Group 2: Strategic Implications - This investment strategy aligns with the company's five development strategies, focusing on internationalization and regional development, thereby strengthening its core position in overseas strategic layouts [2] - The conversion of debt to equity is expected to optimize the subsidiary's asset-liability structure, enhance overall strength and competitiveness, and streamline management efficiency [2] - The investment will not significantly impact the company's consolidated financial statements, including assets, liabilities, current income, or profits, and does not constitute a major asset restructuring [2]

Group 1 - The company, CNOOC Oilfield Services (02883.HK), plans to convert its debt of USD 745,738,539.87 owed by COSL Norwegian AS into equity investment, signing a debt-to-equity agreement [1] - The debt amount consists of a principal of USD 647,893,586.77 and interest of USD 97,844,953.10, with a conversion price set at 1.00 Norwegian Krone per share, resulting in a total of 7,533,464,153 shares to be converted [1] - After the investment is completed, the company and CSL will hold 83.02% and 16.98% of COSL Norwegian AS's equity, respectively [1] Group 2 - COSL Norwegian AS is a wholly-owned subsidiary of CSL, which is itself a wholly-owned subsidiary of CNOOC Hong Kong International Limited, responsible for operations in Norway [2] - As of the announcement date, CSL holds 100% equity in COSL Norwegian AS [2]

中海油田服務股份有限公司 CHINA OILFIELD SERVICES LIMITED (於中華人民共和國註冊成立之股份有限公司) （股票代號：2883） 海外監管公告 本公告乃根據《香港聯合交易所有限公司證券上市規則》第13.10B條 規定而作出。 2026年1月20日 於本公告日期，本公司執行董事為趙順強先生（董事長）及盧濤先生； 本公司職工代表董事為肖佳先生；本公司非執行董事為范白濤先生及 劉秋東先生；本公司獨立非執行董事為趙麗娟女士、郭琳廣先生及姚 昕先生。 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述 或者重大遗漏，并对其内容的真实性、准确性和完整性承担法律责任。 重要内容提示： 一、对外投资概述 （一）本次交易概况 1. 本次交易概况 1 投资标的名称：中海油田服务股份有限公司（以下简称"公司"或"本公 司"）合并报表范围内境外全资子公司 COSL Norwegian AS。 投资方式及投资金额：本公司将截至 2025 年 8 月 31 日对 COSL Norwegian AS 的债权转为股权投资，转股的债权金额为 745,738,539.87 美元（按照 2025 年 1 ...

Core Viewpoint - The company, CNOOC Services, is recognized as one of the largest integrated oilfield service providers globally, offering a comprehensive range of services across various stages of oil and gas exploration, development, and production [2] Group 1: Company Overview - CNOOC Services possesses a complete service chain and a robust offshore oil service equipment fleet [2] - The company's primary business includes geophysical data acquisition, engineering surveying services, drilling services, oilfield technical services, and vessel services [2] - CNOOC Services can provide both standalone operational services and integrated turnkey project services to its clients [2] Group 2: Service Regions - The service areas of CNOOC Services encompass offshore and onshore operations in China, as well as regions in Asia-Pacific, the Middle East, Europe, the Americas, and Africa [2] - In Europe, the company specifically operates in the North Sea, covering the UK and Norwegian sectors [2]

Core Viewpoint - The 2025 China Enterprise ESG "Golden Responsibility Award" aims to recognize companies that have made significant contributions to ESG (Environmental, Social, and Governance) practices, with over 5,000 enterprises participating in the evaluation process [1][4]. Group 1: ESG Services and Initiatives - Sina Finance ESG Rating Center offers 14 ESG services, including information, reports, training, and consulting, to help listed companies promote ESG concepts and enhance their sustainable development performance [1][4]. - In 2025, many quality enterprises in China are actively practicing their responsibilities in environmental, social, and governance aspects, while domestic financial institutions are steadily integrating ESG investment concepts into their entire business processes [1][4]. Group 2: Award Selection and Winners - The award selection process involved over three months of competition, combining ESG performance, professional evaluation scores, and online voting results [1][4]. - The winners of the 2025 China Enterprise ESG "Golden Responsibility Award" for Best Social Responsibility include China Shenhua, China General Nuclear Power, China Resources Sanjiu, Sinopec, Shougang, Wuliangye, Yangtze Power, China Telecom, CNOOC Services, and LONGi Green Energy [2][5]. Group 3: ESG Rating Center Overview - The Sina Finance ESG Rating Center is the first Chinese ESG professional information and rating aggregation platform, dedicated to promoting sustainable development and responsible investment [3][6]. - The center aims to establish ESG evaluation standards suitable for China's characteristics and enhance corporate ratings, while also launching multiple ESG innovation indices for investors [3][6].

Core Viewpoint - The 2025 China Enterprise ESG "Golden Responsibility Award" aims to recognize companies and institutions that have made significant contributions to ESG initiatives in China, reflecting a shift from voluntary practices to compliance requirements in ESG performance [1][18]. Group 1: Award Categories and Winners - The award includes ten categories: Best Environmental Responsibility Award, Best Social Responsibility Award, Best Corporate Governance Responsibility Award, Best Responsibility Initiative Award, Annual Sustainable Development Award, Best Responsible Investment Bank Award, Best Responsible Investment Securities Company Award, Best Responsible Investment Insurance Company Award, Best Responsible Investment Fund Company Award, and Best Responsible Investment Asset Management Institution Award [1][18]. - The Best Environmental Responsibility Award winners include: Sungrow Power Supply, Industrial Fulian, Kweichow Moutai, Geely Automobile, Haier Smart Home, Hisense Visual Technology, Linyang Electronics, Tongwei Co., Weichai Power, and Luxshare Precision [10][28]. - The Best Social Responsibility Award winners include: China Shenhua, China General Nuclear Power, China Resources Sanjiu, Sinopec, Shougang, Wuliangye, Yangtze Power, China Telecom, China Oilfield Services, and LONGi Green Energy [10][28]. - The Best Corporate Governance Responsibility Award winners include: Zijin Mining, SF Holding, ZTE Corporation, Industrial Fulian, JA Solar, Sany Heavy Industry, Nanjing Steel, Bright Dairy, TCL Zhonghuan, and Fuyao Glass [10][28]. - The Best Responsibility Initiative Award winners include: FiberHome Technologies, Wens Foodstuff Group, Haitian Flavoring and Food, Aier Eye Hospital, Yunnan Baiyao, Anker Innovations, Kingfa Sci. & Tech., Huatai Securities, Silex, and Hainengda [11][28]. - The Annual Sustainable Development Award winners include: China General Nuclear Power, Sungrow Power Supply, Kweichow Moutai, Contemporary Amperex Technology, Zijin Mining, Hikvision, Yili, Baosteel, Chint Electric, and China Mobile [11][28]. Group 2: Responsible Investment Awards - The Best Responsible Investment Bank Award winners include: Agricultural Bank of China, Industrial and Commercial Bank of China, China Construction Bank, China Merchants Bank, Industrial Bank, and Bank of China [11][28]. - The Best Responsible Investment Securities Company Award winners include: Guotai Junan, Everbright Securities, CITIC Securities, Huatai Securities, and CICC [12][28]. - The Best Responsible Investment Insurance Company Award winners include: China Life Insurance, China Ping An, China Pacific Insurance, China Re, Sunshine Insurance, and China Life [13][28]. - The Best Responsible Investment Fund Company Award winners include: Bosera Funds, Southern Fund, China Asset Management, Penghua Fund, Huitianfu Fund, and E Fund [14][28]. - The Best Responsible Investment Asset Management Institution Award winners include: China Life Asset Management, Huaxia Wealth Management, Xingyin Wealth Management, Taikang Asset, Taikang Asset, and Galaxy Investment [15][28]. Group 3: ESG Development Context - By 2025, China's ESG development has transitioned from "setting standards" to "strengthening regulations," with a comprehensive disclosure standard system being established [1][18]. - The ESG performance of enterprises is now a compliance requirement, linking commercial value with social value [1][18]. - The ESG rating center aims to promote sustainable development and responsible investment, enhancing the ESG performance of listed companies [17][34].

Core Viewpoint - CNOOC Services (02883) saw a nearly 5% increase, with a current rise of 3.91% to HKD 7.97, and a trading volume of HKD 140 million, driven by geopolitical tensions affecting oil prices [1] Group 1: Market Impact - U.S. President Trump's intensified rhetoric against Iran has raised market concerns about potential U.S. intervention, leading to a spike in international oil prices, reaching a two-month high [1] - LSEG data indicates that geopolitical tensions in Iran and Venezuela have supported global benchmark prices, with the premium of Brent crude over Dubai crude reaching its highest level since July [1] Group 2: Industry Outlook - According to a report from Everbright Securities, significant upstream capital expenditure in China is expected to ensure growth in upstream production and reserves, benefiting oil service companies [1] - The "Three Oil Giants" are actively responding to the Belt and Road Initiative, with their overseas business expansion gradually deepening, allowing subsidiary engineering companies to leverage the advantages of their parent companies and seize new opportunities abroad, likely leading to sustained breakthroughs in overseas business development [1]

Core Viewpoint - CNOOC Services (02883) has seen a nearly 5% increase in stock price, currently trading at HKD 7.97, with a transaction volume of HKD 140 million, driven by rising international oil prices due to geopolitical tensions involving Iran and Venezuela [1] Group 1: Market Impact - U.S. President Trump's strong rhetoric against Iran has raised market concerns about potential U.S. intervention, leading to a spike in international oil prices, reaching a two-month high [1] - LSEG data indicates that the premium of Brent crude over Dubai crude has risen to its highest level since July, supported by geopolitical tensions [1] Group 2: Industry Outlook - Everbright Securities reports that significant upstream capital expenditure in China will support the growth of upstream production and reserves, benefiting oil service companies [1] - The "Three Oil Giants" are actively responding to the Belt and Road Initiative, with overseas business layouts gradually deepening, allowing subsidiary engineering companies to leverage parent company advantages for new opportunities abroad [1]

Core Viewpoint - The State-Owned Enterprise Reform Index (399974) closed at 2001.08 points, down 0.85%, with a trading volume of 270.741 billion yuan and a turnover rate of 1.18% [1] Group 1: Index Performance - On the day, 36 constituent stocks rose, with China Oilfield Services leading with a 6.03% increase, while 60 stocks declined, with Western Superconducting leading the decline at 10.02% [1] Group 2: Capital Flow - The net outflow of main funds from the constituent stocks of the State-Owned Enterprise Reform Index totaled 16.571 billion yuan, while the net inflow from speculative funds was 4.448 billion yuan, and the net inflow from retail investors was 12.124 billion yuan [2]