With 3,982 Enhanced Oil Recovery (EOR) related patents published between 2002 and 2022, Halliburton Co holds the most number of Enhanced Oil Recovery (EOR) patents in the global Oil & Gas sector, of which 71.8% was contributed by its subsidiary Halliburton Energy Services Inc.
The second largest number of Enhanced Oil Recovery (EOR) related patents were published by China National Petroleum Corp with 3,759 patents, of which 81.0% was contributed by its subsidiary PetroChina Co Ltd. The third largest number of Enhanced Oil Recovery (EOR) related patents were published by China Petrochemical Corp with 3,102 patents, of which 86.6% was contributed by its subsidiary China Petroleum & Chemical Corp. The fourth largest number of Enhanced Oil Recovery (EOR) related patents were published by Shell plc with 2,999 patents, of which 62.2% was contributed by its subsidiary Shell Internationale Research Maatschappij B.V.. The fifth largest number of Enhanced Oil Recovery (EOR) related patents were published by Schlumberger Ltd with 2,174 patents, of which 23.2% was contributed by its subsidiary Schlumberger Technology BV.
The top five patent holders, i.e., Halliburton Co, China National Petroleum Corp, China Petrochemical Corp, Shell plc, and Schlumberger Ltd, together held 16,016 Enhanced Oil Recovery (EOR) patents during the period.
Don’t wait - discover a universe of connected data & insights with your next search. Browse over 28M data points across 22 industries.
Access more premium companies when you subscribe to Explorer