CNOOC Development Tender: Multiple material and service procurements, clarifying winning bidders and amounts

As of March 31, according to data from Tianyancha, China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. issued a procurement tender for experimental consumables such as the Haiyou Development - Shenzhen Regional Center - Drilling and Production Institute - high-pressure valves and pressure-bearing sand filling clamping devices - 20260313, with the publication date being March 31, 2026.

Overview of Core Tender Information

Field Name Corresponding Information
Section/Package Number GKXJ-2026-JN-0679/01
Section/Package Name Haiyou Development - Shenzhen Regional Center - Drilling and Production Institute - Procurement of experimental consumables such as high-pressure valves and pressure-bearing sand filling clamping devices - 20260313
Procurement Method Inquiry-based procurement
Tenderer China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd.
Project Category Goods
Tendering Method Inquiry-based procurement
Announcement Date March 31, 2026

Winning Bidder and Amount Revealed

The winning bidder for this tender is Chengdu Yancore Technology Co., Ltd. The winning bid amount (including value-added tax) is RMB 312,512.8. The announcement shows that after a round of competition, Chengdu Yancore Technology Co., Ltd. emerged as the winner and successfully secured this supply contract.

Clear Rationale for Winning

For this project, the bid evaluation adopts the method of the lowest evaluated bid price. Based on this bid evaluation rule, the first bid candidate is determined as the winning bidder. Ultimately, Chengdu Yancore Technology Co., Ltd., by leveraging its own bidding advantages, became the winner of this tender.

According to Tianyancha data, recent information about Haiyou Development as the procuring party is as follows:

No. Project Name Publication Date Procuring Entity Winning Bidder Winning Bid Amount (RMB)
1 Haiyou Development - Catering Company - Exclusive Agreement for Industrial Property and Logistics Support Services in the Bohai Region 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Tianjin Yangqinxuan Property Management Co., Ltd. 56785780
2 Haiyou Development - General Services Category Division - Catering Service Branch Company - Budget Preparation Service for Handling Remaining Equipment for the Haiyou Property Cangzhou Central Kitchen Project - 20260323 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Zhuo Yue Tonghui Construction Consulting Co., Ltd. 4800
3 Haiyou Development - Engineering and Technology Company - Exclusive Agreement for Cluster Isotopes and Annual Service for Uranium Lead Carbonates 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Shandong University of Science and Technology 7559788
4 Haiyou Development - Changzhou Institute Shanghai HAIKAI - Purchase of 1 unit of explosion-proof electric drive high-pressure spraying machine 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
5 Haiyou Development - Changzhou Institute Shanghai HAIKAI - Purchase of 1 unit of mobile electric-driven ultra-high-pressure micro-water rust removal equipment 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
6 Haiyou Development - Shanghai Regional Center - Changzhou Institute - Purchase of oxidized cuprous copper - 20260327 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Changzhou Tunan Trading Co., Ltd. 994400
7 Haiyou Development - Equipment Technology Company - Exclusive Agreement for Procurement of Sand Mud Mixer Specialized Equipment Raw Casting Parts 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
8 Haiyou Development - Engineering and Technology Company - Public Notice of Bid Candidates for Exclusive Agreement for Procurement of Power Cable Retrieving Tools and Their Machined Materials 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
9 Haiyou Development - General Services Category Division - Engineering and Technology Company - Exclusive Agreement for Drone Modification Technical Research and Testing Services - 20260312 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Chengdu Qiantuo Information Technology Co., Ltd. 598900
10 Haiyou Development - International Engineering Logistics Company - Exclusive Agreement for Transportation Services for Steel Structure Components of Over-Limit Equipment in the Tianjin Region 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Tianjin Dagang Oilfield Transportation Co., Ltd. 514196
11 Haiyou Development - Safety and Environmental Protection Company - Public Notice of Bid Candidates for Exclusive Agreement for Indoor Air Quality Governance and Improvement Services 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Anhui Shengcheng Environmental Engineering Co., Ltd. 260800
12 Haiyou Development - Engineering and Technology Company - Shenzhen Experimental Center Platform On-Site NMR Testing and Analysis (Second Round) 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. China National Petroleum Group Well Logging Co., Ltd. Tianjin Branch 1412918
13 Haiyou Development - Engineering and Technology Company - Purchase of winches and supporting equipment 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Tianjin Chunxing Machinery Co., Ltd. 1467870
14 Haiyou Development - Operations and Maintenance Category Division - Procurement of 35 items of materials including seamless steel pipes - 20260330 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
15 Haiyou Development - Engineering and Technology Company - Exclusive Agreement for Procurement of Bohai Regional Electric Control Intelligent Completion Tools 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Tianjin Qibailu Intelligent Technology Co., Ltd. 3339355
16 Haiyou Development - General Services Category Division - Exclusive Agreement for Export Certification and Audit Services for Water Treatment Equipment from Tianjin Institute - 20260313 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Lifeng Engineering Technology (Tianjin) Co., Ltd. 535300
17 Haiyou Development - Safety and Environmental Protection Company - Shanghai Branch - Exclusive Agreement for Facility Maintenance and Preventive Maintenance Services at the Experimental Center 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Shanghai Yongdao Environmental Technology Co., Ltd. 2066046
18 Haiyou Development - Catering Company - Exclusive Agreement for Vehicle Services at the Shanghai Catering Chunxiao Terminal Work Site 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Ningbo Zhe’an Ke Travel Passenger Transportation Co., Ltd. 1251756
19 Haiyou Development - Engineering and Technology Company - Exclusive Agreement for Procurement of Reactor for Pump Operating Conditions in the Bohai Region 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Tangshan Shangxin Rongda Electronic Products Co., Ltd. 2897190
20 Haiyou Development - Engineering and Technology Company - Exclusive Agreement for Procurement of Coiled Tubing Tools 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Sichuan Kangkesh Petroleum Technology Co., Ltd. 4699168
21 Haiyou Development - Engineering and Technology Company - Exclusive Agreement for Standardization Services at Huizhou Branch Factory Area 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
22 Haiyou Development - Shenzhen Regional Center - Drilling and Production Institute - Procurement of experimental consumables such as high-pressure valves and pressure-bearing sand filling clamping devices - 20260313 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Chengdu Yancore Technology Co., Ltd. 312512
23 Haiyou Development - Engineering and Technology Company - Exclusive Agreement for Technology Information Research and Operations Support Technical Services 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
24 Haiyou Development - Engineering and Technology Company - Exclusive Agreement for Production of Artificial Lifting Products and Technical Services, including Workshop Processing Services 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
25 Haiyou Development - General Services Category Division - Logistics Company - Exclusive Agreement for Security Plan Assessment Services for Tianjin Port Facilities - 20260309 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Ministry of Transport Water Transportation Science Research Institute 145000
26 Logistics Company - Exclusive Agreement for International Engineering - Exclusive Agreement for Land Terminal Crane and Forklift Services in Yingkou 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Tianjin Yangqinxuan Property Management Co., Ltd. 484844
27 Haiyou Development - Engineering and Technology Company - Public Notice of Bid Candidates for Customized Exclusive Agreement for Machining Accessories for Vibration Short Sections of All-Metal Hydraulic Oscillators 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
28 Haiyou Development - Engineering and Technology Company - Exclusive Agreement for Procurement of Sand Inhibitor in the South China Sea East Area for 2026-2029 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Shandong Shida Oilfield Technology Service Co., Ltd. 1491600
29 Haiyou Development - Equipment Technology Company - Public Notice of Bid Candidates for Exclusive Agreement for Casing Suppression Services 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Hebei Huayang Steel Pipe Co., Ltd. 42677388
30 Haiyou Development - Equipment Technology Company - Exclusive Agreement for Professional Operations and Maintenance Services for Special Equipment Land Forklifts 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Micos (Tianjin) Technical Service Co., Ltd. 5925216
31 Haiyou Development - International Engineering Logistics Company - Exclusive Agreement for Transportation Services for Steel Structure Components of Over-Limit Equipment in the Tianjin Region 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Tianjin Dagang Oilfield Transportation Co., Ltd. 514196
32 Haiyou Development - General Materials Category Division - Exclusive Agreement for Procurement of PLC Training Devices for Safety and Environmental Protection - 20260324 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Zhejiang Yuxing Technology Co., Ltd. 277980
33 Haiyou Development - General Materials Category Division - Engineering and Technology Company - Exclusive Agreement for Procurement of 3 items including regulating valves - 20260316 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Tianjin Guosheng Technology Development Co., Ltd. 1986980
34 Haiyou Development - Engineering and Technology Company - Exclusive Agreement for Motor Repair Services in the Huizhou Region 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Dongguan Fuyuan Industrial Co., Ltd. 416488
35 Haiyou Development - Engineering and Technology Company - Public Notice of Bid Candidates for Exclusive Agreement for Youzhi Drilling and Completion Operation Support and Digital Technology Services 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
36 Haiyou Development - General Materials Category Division - Equipment Technology Company - Exclusive Agreement for Procurement of 3 items of instrument tubing - 20260320 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Yantai Bangshi Industry and Trade Co., Ltd. 1079941
37 Haiyou Development - Shanghai Regional Center - Changzhou Institute - Exclusive Agreement for Analysis and Testing Services of Resin Components in the Changzhou Region - 20260318 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Shanghai Weipu Testing Technology Group Co., Ltd. 746700
38 Haiyou Development Clean Energy Company - Exclusive Agreement for Water Dynamic Test Services of VIV Inhibition Device in the Zhuhai Region 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
39 Haiyou Development - Shanghai Regional Center - Procurement of ε-Caprolactone - 20260323 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Changzhou Yiyou Materials Co., Ltd. 44974
40 Haiyou Development - Shenzhen Regional Center - Procurement of consulting services for maintaining high-tech enterprise qualification 20260318 2026-03-30 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Shanghai Qingbiao Information Technology Service Co., Ltd. 167480
41 Haiyou Development - Shanghai Regional Center - Procurement of raw materials such as polycarbonate - 20260330 2026-03-30 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
42 Haiyou Development - Engineering and Technology Company - Public Notice of Bid Candidates for Exclusive Agreement for Procurement of completion single tubing line hydraulic control sliding sleeves 2026-03-30 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
43 Haiyou Development - Equipment Technology Company - Exclusive Agreement for Procurement of Steel Plates for Turnaround Facilities (Material Q235B, below 6mm) 2026-03-30 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
44 Haiyou Development - Engineering and Technology Company - Exclusive Agreement for Customized Metal Parts for Viscosity-Sensitive Water Control Valves 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Sichuan Guanghan Huachen Oil and Gas Machinery Co., Ltd. 18387360
45 Haiyou Development - Zhanjiang Regional Center - Procurement of 10 items of materials such as plastic shell circuit breakers - 20260312 2026-03-30 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
46 Haiyou Development - Zhanjiang Regional Center - Public Notice of Exclusive Agreement for Printing Services for the Zhanjiang Branch of Oil Production Services - 20260330 2026-03-30 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
47 Haiyou Development - Engineering and Technology Company - Window opening side drilling and milling bit design method and model research services 2026-03-30 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Southwest Petroleum University 1096950
48 Haiyou Development - Chemical Products Category Division - Exclusive Agreement for Procurement of Sodium Hypochlorite for the Tianjin Region for 2026-2029 by Tianjin Institute - 20260320 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Hebei Sanfu Environmental Technology Co., Ltd. 1018695
49 Haiyou Development - Shenzhen Regional Center - Exclusive Agreement for Procurement of Key Hydraulic Components for HPU&TUTA, Ground Control System for Shallow-Water Underwater Wellhead - 20260330 2026-03-30 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. - -
50 Haiyou Development - Catering Company - Procurement of services for maintenance of the factory building at the Tanggu base of the supply chain service center and maintenance services for the AB apartments of the catering company 2026-03-31 China National Offshore Oil Corporation (CNOOC) Energy Development Co., Ltd. Jiangsu Jintu Mu Construction Group Co., Ltd. 4694513

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