China Oilfield Services Ltd.
Public Company
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Basic Info
Headquarter
Tianjin Shi, China
Founded Year
2001
Employees
10,000-50,000
Stock Symbol
HKG: 2883
Social Media
https://www.cosl.com.cn
China Oilfield Services Ltd. is a company that provides Petroleum industry, Well intervention, Directional drilling and more. China Oilfield Services Ltd. is headquartered in China Tianjin Shi. China Oilfield Services Ltd. was founded in 2001. China Oilfield Services Ltd. has a total of 2,742 patents and 533 literature
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Innovation Word Cloud
A quick overview of tech portfolio with the top keywords and phrases extracted from patents of China Oilfield Services Ltd.
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High Related Markets
Mentioned companies in the market reports of major market categories and sectors by China Oilfield Services Ltd.
Market Category
Energy and Natural Resources
Energy and Natural Resources
Market Segment
Oil and Gas Exploration and Production
Oil
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Innovation Matrix
visualizing technology portfolio of hot application areas and blank areas for China Oilfield Services Ltd.
Time Range:
Overall
Application Domain L2
Tech Topic L2
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Subsidiary Lists
Subsidiaries with patent applications for China Oilfield Services Ltd.
Company
Tianjin Shi, China
Tianjin Shi, China
Tianjin Shi, China
Guangdong Sheng, China
Patents
167
96
58
39
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China Oilfield Services Ltd. Frequently Asked Questions
What technical fields has China Oilfield Services Ltd. researched?
What is China Oilfield Services Ltd.'s total number of patents?
How many employees does China Oilfield Services Ltd. have globally?
China Oilfield Services Ltd. has 15151 employees worldwide.
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PetroChina Co., Ltd.Idemitsu Kosan Co., Ltd.Mobil Corp.Exxon Mobil Corp.Standard Oil Co.Saudi Arabian Oil Co.China National Petroleum Corp.Osaka Gas Co., Ltd.Schlumberger Technologies, Inc.Standard Oil Co.Tokyo Gas Co., Ltd.Elf Atochem SAChina National Offshore Oil Corp.China National Offshore Oil Corp.JSWChina General Nuclear Power Corp.Duksan Co., Ltd.Beijing Yanshan Petrochemical Co., Ltd.Dresser Industries, Inc.Électricité de France SAElf Aquitaine FertilisantsHalliburton Co.Shell Deepwater Development, Inc.Messer SE & Co. KGaA (Germany)Eni SpAConoco, Inc.ConocoPhillipsSinopec Oilfield Service Corp.SK Innovation Co., Ltd.Elf Aquitaine Fertilisants
Halliburton Energy Services, Inc.Halliburton Co.CNPC Bohai Drilling Engineering Co. Ltd.CNPC Bohai Drilling Engineering Co. Ltd.Oceaneering International, Inc.Vallourec SADril-Quip, Inc.C. & J. Clark International Ltd.Anton Oilfield Services (Group) Ltd.Scientific Drilling International, Inc.Packers Plus Energy Services, Inc.Trican Well Service Ltd.Subsea Technologies Group Ltd.Altus Intervention ASRPC, Inc.Gyrodata, Inc.Valaris PlcGeoservices SAHelix Energy Solutions Group, Inc.Ziebel ASQuality Intervention ASTempress Technologies, Inc.Bilco Tools, Inc.Calfrac Well Services Ltd.Schoeller-Bleckmann Oilfield Equipment AGWireline Engineering Ltd.Drillform Technical Services Ltd.Pragma Well Technology Ltd.Lupatech SAWenzel Downhole Tools Ltd.
ConocoPhillipsSmith International, Inc.Saipem SpACNPC Bohai Drilling Engineering Co. Ltd.CNPC Bohai Drilling Engineering Co. Ltd.Ceca SATracto Technik GmbH & Co. KGHerrenknecht AGElliott Co.Membrane Technology & Research, Inc.Scientific Drilling International, Inc.Trican Well Service Ltd.Hammelmann GmbHAnadarko Petroleum Corp.Maersk Drilling A/SGyrodata, Inc.Yantai Jereh Oilfield Services Group Co. Ltd.Valaris PlcBeijing Liuhe Greatness Technology Co., Ltd.Yantai Jereh Oilfield Services Group Co. Ltd.Beijing Liuhe Greatness Technology Co., Ltd.Netzsch Gertebau GmbHNexen Corp.Chimec SpALeistritz AGMotive Drilling Technologies, Inc.DI Corp.Eco-Tec Ltd.Devon Energy Corp.TAM International, Inc.
Southwest Petroleum UniversityCabot Corp.Albemarle Corp.M-I LLCCNPC Bohai Drilling Engineering Co. Ltd.CNPC Bohai Drilling Engineering Co. Ltd.Stepan Co.Croda International PlcHarima Chemicals Group, Inc.Ceca SALamberti SpADerrick Corp.Vallourec SASakamoto Yakuhin Kogyo Co., Ltd.PQ Corp.M-I Drilling Fluids U.K. Ltd.Occidental Petroleum Corp.Elliott Co.Elkem Silicones France SASNikko Chemicals Co., Ltd.Oleon NVTrican Well Service Ltd.Hammelmann GmbHAnadarko Petroleum Corp.Innovex Downhole Solutions, Inc.Apache Corp.Brooks Instrument LLCNetzsch Gertebau GmbHNexen Corp.Chimec SpA
Samsung Heavy Industries Co., Ltd.Hanwha Ocean Co., Ltd.China National Offshore Oil Corp.China National Offshore Oil Corp.Halliburton Co.Petróleo Brasileiro SASaipem SpAVetco Gray, Inc.Varco International, Inc.Oceaneering International, Inc.Vallourec SADril-Quip, Inc.National-Oilwell, Inc.Yantai CIMC Raffles Offshore Ltd.Transocean Sedco Forex Ventures Ltd.Bluewater Energy Services BVScientific Drilling International, Inc.Twister BVTrican Well Service Ltd.Anadarko Petroleum Corp.Maersk Drilling A/SInnovex Downhole Solutions, Inc.Valaris PlcBergstrom, Inc.Shengli Petroleum Administrative BureauDrillmec SpAWorldwide Oilfield Machine, Inc.Centek Ltd.MODEC, Inc.Japan Drilling Co., Ltd.
Halliburton Co.CNPC Bohai Drilling Engineering Co. Ltd.CNPC Bohai Drilling Engineering Co. Ltd.Varco International, Inc.Daido Kogyo Co., Ltd.Camco International, Inc.Dril-Quip, Inc.C. & J. Clark International Ltd.Anton Oilfield Services (Group) Ltd.Trican Well Service Ltd.DynaEnergetics GmbH & Co. KGRPC, Inc.Innovex Downhole Solutions, Inc.Gyrodata, Inc.Valaris PlcTuboscope Vetco International, Inc.Tuboscope Vetco International, Inc.Centek Ltd.Tong Oil Tools Co., Ltd.Premier Coil Solutions, Inc.Bilco Tools, Inc.Calfrac Well Services Ltd.Stimline ASSchoeller-Bleckmann Oilfield Equipment AGAnTech Ltd.Rosneft Oil Co.Magnum Oil Tools International Ltd.Wenzel Downhole Tools Ltd.FHE USA LLCHydra-Rig, Inc.
Halliburton Co.Saipem SpADril-Quip, Inc.Shanghai SK Petroleum & Chemical Equipment Corp. Ltd.Scientific Drilling International, Inc.Gyrodata, Inc.Valaris PlcHuanding Energy ServicesWestern Atlas, Inc.Well Logging Energy Technology Co., Ltd.Wireline Engineering Ltd.Drillform Technical Services Ltd.Expro International Group Ltd.Precision Drilling Corp.Parker Drilling Co.C&J Energy Services, Inc.
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Page generation time: Oct 18 2023