China National Petroleum Corporation

China


 
Total IP 336
Total IP incl. subs 358 (+ 77 for subs)
Total IP Rank # 3,804
IP Activity Score 3.3/5.0    391
IP Activity Rank # 1,813
IP AS incl. subs 3/5.0    413
Dominant Nice Class Construction and mining; install...

Patents

Trademarks

110 7
15 5
191 8
0
 
Last Patent 2025 - Hthp corrosion resistant composi...
First Patent 2000 - Curved-beam pumping unit
Last Trademark 2007 - KUNLUN
First Trademark 2005 - CNPC

Subsidiaries

4 subsidiaries with IP (71 patents, 6 trademarks)

5 subsidiaries without IP

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Industry (Nice Classification)

Latest Inventions, Goods, Services

2024 Invention Geosteering method and apparatus, and storage medium. A geosteering method and apparatus, and a ...
Invention Pdc cutter with unique microstructure. A superabrasive compact and a method of making the supera...
Invention Degradable friction reducer for hydraulic fracturing treatments. A polyacrylamide friction reduc...
Invention Nanoemulsion and method for preparation thereof, and high-temperature-resistant, high-density, oi...
Invention Cement slurry system for relieving casing deformation, and preparation method therefor and use th...
Invention Multi-component copolymer and preparation method therefor and use thereof. The present invention ...
Invention Fluoroelastomers with improved chemical resistance. Co-cured blends of fluoroelastomers of tetra...
Invention Packer supporting repeated release and tie-back, and operation method therefor. A packer supporti...
Invention High-resolution wave-impedance inversion method and apparatus based on spectral fusion. LMHLMHLMH...
Invention Multi-wave migration imaging method and apparatus based on iterative deconvolutional imaging cond...
2023 Invention Amine liquid purification and regeneration system and method. 22 capture system.
Invention Velocity recognition method and device for interbed multiple. The present application discloses a...
Invention Identification method and identification system for downhole working condition of drilling, and s...
Invention Corrosion-resistant material for cement slurry, carbon dioxide corrosion resistant cement slurry,...
Invention Hydraulic lifting multi-gradient drilling string, drilling system, and drilling method. A hydraul...
Invention Sidewall coring apparatus and method, and storage medium. A sidewall coring apparatus (100) and m...
Invention High-power alternating-current and direct-current coaxial downhole connector. A high-power altern...
Invention Method and apparatus for analyzing friction resistance of drill string. The present invention rel...
Invention High-temperature-resistant cement and cement paste system for well cementation, and preparation m...
Invention Ultrahigh-temperature well cementation insulating fluid system, and preparation method therefor a...
Invention Contrast standard sample for ultrasonic phased array detection and correction at pipe end of weld...
Invention Method for determining wellbore pressure while tripping of high-temperature and high-pressure wel...
Invention Construction method for hanging coiled tubing at wellhead and plugging well completion string at ...
Invention Construction method for fault grouping model, and fault grouping method and system. The present i...
Invention Pigging ball launching apparatus and method. A pigging ball launching apparatus and method. The p...
Invention Wellbore gas kick monitoring apparatus and method. A wellbore gas kick monitoring apparatus compr...
Invention Measurement system and method for rotation parameters of top drive spindle. Disclosed is a measur...
Invention Cluster well borehole obstacle avoidance path determination method and apparatus. The present inv...
Invention Frac plug device for high expansion at the setting position. The frac plug device is a wedge type...
Invention Sensor system with an interior sensor and a piezoelectric power supply. The drilling system (10) ...
Invention Hthp corrosion resistant composite seal via recrystallization of reactive composite: formulation ...
Invention Sensor system with an interior sensor and a piezoelectric power supply. The drilling system withs...
Invention Formulation and setup method of in-situ dissolvable plug. The patent application discloses a plu...
Invention Multifunctional slickwater fracturing fluid. A water-soluble polymer system for suspending proppa...
Invention Low concentration synthetic polymer fracturing fluid with ascorbic acid. A fracturing fluid for f...
Invention Impregnated diamond cutter with an improved rop. An impregnated diamond cutter and a method of ma...
Invention Low concentration synthetic polymer fracturing fluid with ascorbic acid. A fracturing fluid for ...
Invention Delayed gelation polymer system for high temperature and high salinity applications. This disclos...
Invention Force modulation cartridge system for a drill bit. The multi-directional force modulation cartrid...
Invention Di-alkyl chain surfactants as a main surfactant for enhancing oil recovery for tight oil formatio...
Invention Force modulation cartridge system for a drill bit. The multi-directional force modulation cartri...
Invention Frac plug device with an anchor mandrel assembly for a locked set configuration. A ramp type frac...
2022 Invention Ultra-high temperature resistant cement slurry system for cementing and preparation method and us...
Invention Set cement mechanical properties parameter measurement method and apparatus based on image recogn...
Invention Vsp-based depth domain seismic profile horizon calibration method and apparatus. A VSP-based dep...
Invention Method and system for correcting imbalance in in-phase/quadrature demodulation of optical fiber d...
Invention Method and apparatus for global phase in-phase/quadrature demodulation of optical fiber das data....
Invention Method and apparatus for inverting formation wave impedance using das borehole seismic data. A m...
2007 G/S Solidified gases for industrial purposes, namely, carbonic acid gas and sulphurous acid gas; acid...
G/S Solidified gases for industrial purposes; acids; salts for industrial purposes; benzene-based ac...
G/S Solidified gases for industrial purposes; acids, namely, formic acid and boric acid; salts for in...
2006 G/S Solidified gases for industrial purposes; acids; salts for industrial purposes; benzene-based aci...
2005 G/S Antifreezing fluid; starting fluid for vehicles; fuel-saving preparations; solidified gases for i...
G/S Vehicle greasing; vehicle filling stations. Transport by pipeline; storage of liquefied gas. Prod...
G/S Antifreezing fluid; starting fluid for vehicles; fuel-saving preparations; solidified gases for ...
G/S Solidified gases for industrial purposes, namely, carbonic acid gas, sulphurous acid gas; Acids, ...
G/S Solidified gases for industrial purposes, namely carbonic acid gas, sulphurous acid gas; Acids, n...
G/S Solidified gases for industrial purposes, namely, carbonic acid gas, sulfurous acid gas; Acids, n...