Assignee
PETROCHINA CO LTD
CN·136 granted patents·58 pending applications·324 citations·filing 2000–2025
Top patents by PatentIndex Score
194 records- 0191US6660157B2Heavy oil hydrocracking process with multimetallic liquid catalyst in slurry bedPETROCHINA CO LTD·Filed 2001·Granted Dec 9, 2003·159 cites·13 claims
- 0289US10578757B2Omnidirectional vector seismic data processing method and apparatus, computer-readable storage medium and devicePETROCHINA CO LTD·Filed 2018·Granted Mar 3, 2020·18 cites·21 claims
- 0389US10184904B1Core holder for micron CT observation and experimental method thereofPETROCHINA CO LTD·Filed 2018·Granted Jan 22, 2019·8 cites·10 claims
- 0488US7786336B2Catalyst composition for ethylene oligomerization and the use thereofPETROCHINA CO LTD·Filed 2007·Granted Aug 31, 2010·18 cites·8 claims
- 0586US12098783B2Gas flow control valve and mounting method for gas flow control valvePETROCHINA CO LTD·Filed 2021·Granted Sep 24, 2024·2 cites·10 claims
- 0686US10107056B2Core holding systemPETROCHINA CO LTD·Filed 2017·Granted Oct 23, 2018·6 cites·15 claims
- 0784US9605531B2Intelligent test system and method for multi-segment fractured horizontal wellPETROCHINA CO LTD·Filed 2015·Granted Mar 28, 2017·7 cites·10 claims
- 0883US11097239B2Core-shell structured non-ionic nanoemulsion system and preparation and use thereofPETROCHINA CO LTD·Filed 2019·Granted Aug 24, 2021·2 cites·20 claims
- 0981US11565944B2Process for preparing titanic acid salt, titanic acid, and titanium oxide having controllable particle size and hierarchical structurePETROCHINA CO LTD·Filed 2019·Granted Jan 31, 2023·1 cites·4 claims
- 1081US11313192B2Method for lowering oil pipe in gas well without well-killing, soluble bridge plug and material preparation method thereofPETROCHINA CO LTD·Filed 2018·Granted Apr 26, 2022·2 cites·10 claims
- 1180US10422733B2Method and device for testing wettability of dense oil reservoirPETROCHINA CO LTD·Filed 2017·Granted Sep 24, 2019·3 cites·10 claims
- 1277US9597668B2Selective nickel based hydrogenation catalyst and the preparation thereofPETROCHINA CO LTD·Filed 2014·Granted Mar 21, 2017·3 cites·14 claims
- 1377US9534178B2Distillate two-phase hydrogenation reactor and hydrogenation methodPETROCHINA CO LTD·Filed 2013·Granted Jan 3, 2017·4 cites·17 claims
- 1476US11010629B2Method for automatically extracting image features of electrical imaging well logging, computer equipment and non-transitory computer readable mediumPETROCHINA CO LTD·Filed 2019·Granted May 18, 2021·3 cites·15 claims
- 1576US10816532B2Methods and devices for detecting mercury isotopes in crude oilPETROCHINA CO LTD·Filed 2019·Granted Oct 27, 2020·2 cites·19 claims
- 1674US7727924B2Method to raise the solid content of catalytic cracking catalyst slurryPETROCHINA CO LTD·Filed 2007·Granted Jun 1, 2010·5 cites·22 claims
- 1774US7635022B2Pumping systemPETROCHINA CO LTD·Filed 2006·Granted Dec 22, 2009·9 cites·20 claims
- 1872US11112398B2Apparatus and method for determining volume stability of well cementPETROCHINA CO LTD·Filed 2018·Granted Sep 7, 2021·1 cites·10 claims
- 1971US12503523B2Catalyst composition for polymerization of α-olefin and preparation and use thereofPETROCHINA CO LTD·Filed 2022·Granted Dec 23, 2025·0 cites·19 claims
- 2071US10800717B2Palladium-based supported hydrogenation catalyst, and preparation method and application thereofPETROCHINA CO LTD·Filed 2018·Granted Oct 13, 2020·1 cites·11 claims
- 2171US7390762B2Method for the preparation of high-content NaY molecular sieves synthesized from kaolin sprayed microspheresPETROCHINA CO LTD·Filed 2005·Granted Jun 24, 2008·5 cites·26 claims
- 2270US11994011B2Permanent packer and extended gas lift method using permanent packerPETROCHINA CO LTD·Filed 2020·Granted May 28, 2024·1 cites·10 claims
- 2370US2025058379A1Method of preparing iridium nanocrystalPETROCHINA CO LTD·Filed 2024·Application pending·0 cites
- 2469US11531130B2Seismic full horizon tracking method, computer device and computer-readable storage mediumPETROCHINA CO LTD·Filed 2020·Granted Dec 20, 2022·1 cites·20 claims
- 2568US11629283B2N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and synthesis method thereofPETROCHINA CO LTD·Filed 2019·Granted Apr 18, 2023·0 cites·1 claims
- 2668US11037084B2Method and apparatus for evaluating exploitation value of a geological resourcePETROCHINA CO LTD·Filed 2018·Granted Jun 15, 2021·1 cites·7 claims
- 2768US10641723B2Method and device for detecting damage rate of an inner coating of a downhole oil casingPETROCHINA CO LTD·Filed 2018·Granted May 5, 2020·3 cites·13 claims
- 2868US10401311B2Method and device for measuring formation elemental capture gamma ray spectraPETROCHINA CO LTD·Filed 2018·Granted Sep 3, 2019·1 cites·10 claims
- 2968US2024270879A1Catalyst for copolymerization of ethylene and methyl methacrylate, and application thereofPETROCHINA CO LTD·Filed 2024·Application pending·0 cites
- 3067US7414919B2Method for improving the seismic resolutionPETROCHINA CO LTD·Filed 2005·Granted Aug 19, 2008·17 cites·1 claims
- 3167US2024353378A1Analysis device and analysis method for quality index of natural gas product and applicationPETROCHINA CO LTD·Filed 2024·Application pending·0 cites
- 3267US2015144430A1Marine cylinder oil composite additivePETROCHINA CO LTD·Filed 2014·Application pending·0 cites
- 3366US10094814B2Performance testing device for acid fracturing fluid and application thereofPETROCHINA CO LTD·Filed 2016·Granted Oct 9, 2018·1 cites·13 claims
- 3466US2023110441A1Method and System For Real-Time Optimization of Molecular-Level Device, and Storage MediumPETROCHINA CO LTD·Filed 2022·Application pending·0 cites
- 3565US11505734B2Nonionic Gemini surfactant of (octylphenol polyoxyethylene ether disubstituted) dicarboxylic acid diphenyl ether and its synthesis methodPETROCHINA CO LTD·Filed 2019·Granted Nov 22, 2022·0 cites·1 claims
- 3665US2026008891A1Rubber filler, rubber composite comprising the same, and preparation method therefor and use thereofPETROCHINA CO LTD·Filed 2023·Application pending·0 cites
- 3765US2024336645A1Metallocene compound, and preparation method and application thereofPETROCHINA CO LTD·Filed 2024·Application pending·0 cites
- 3864US11174424B2Core-shell structured anionic nano microemulsion system, and preparation and application thereofPETROCHINA CO LTD·Filed 2019·Granted Nov 16, 2021·0 cites·19 claims
- 3963US2024316541A1Metal modified zsm-5 molecular sieve catalyst, preparation method and application thereofPETROCHINA CO LTD·Filed 2024·Application pending·0 cites
- 4063US2025382400A1Olefin polymerization metallocene catalyst composition, preparation thereof and use thereofPETROCHINA CO LTD·Filed 2022·Application pending·0 cites
- 4161US11692426B2Method and apparatus for determining integrated exploitation approach of shale and adjacent oil reservoirsPETROCHINA CO LTD·Filed 2020·Granted Jul 4, 2023·1 cites·20 claims
- 4261US11180980B2Downhole oil, gas, water and sand separation method and separatorPETROCHINA CO LTD·Filed 2018·Granted Nov 23, 2021·1 cites·24 claims
- 4361US11003952B2Method and apparatus for automatically recognizing electrical imaging well logging faciesPETROCHINA CO LTD·Filed 2019·Granted May 11, 2021·1 cites·9 claims
- 4461US10196884B2Method for enhancing oil recovery in huff-puff oil production of tight oil from a fractured horizontal wellPETROCHINA CO LTD·Filed 2017·Granted Feb 5, 2019·2 cites·9 claims
- 4561US6576586B2Selective hydrogenation catalyst for pyrolysis gasolinePETROCHINA CO LTD·Filed 2001·Granted Jun 10, 2003·12 cites·4 claims
- 4661US2025262612A1Solid acid alkylation catalyst, and preparation method therefor and use thereofPETROCHINA CO LTD·Filed 2022·Application pending·0 cites
- 4760US10982131B2Phase transition material fluid and proppant formed therefromPETROCHINA CO LTD·Filed 2019·Granted Apr 20, 2021·0 cites·20 claims
- 4860US2020062874A1Metallocene complex with a heteroatom-containing pi-ligand and preparation method therefor, catalyst system containing the same and use thereofPETROCHINA CO LTD·Filed 2019·Application pending·0 cites
- 4960US2025002797A1Treatment method and device for waste plasticPETROCHINA CO LTD·Filed 2024·Application pending·0 cites
- 5060US2015144429A1Marine lubricating oil composite additivePETROCHINA CO LTD·Filed 2014·Application pending·0 cites
Showing the top 50 of 194 patent records by PatentIndex Score.
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