| Utility: Carbon-Dioxide-Responsive Self-Thickening Intelligent Fluid Based on Supramolecular Self-Assembly Filling date: 8 Sep 2025 Issue date: 18 Aug 2022 | 9 May 2022 | 18 Aug 2022 |
| Utility: DOWNHOLE THROTTLING DEVICE BASED ON WIRELESS CONTROL Filling date: 8 Sep 2025 Issue date: 30 Jun 2022 | 15 Sep 2020 | 30 Jun 2022 |
| Utility: Permeability-enhancing flooding system for tight oil reservoirs, and preparation and use thereof Filling date: 8 Sep 2025 Issue date: 12 May 2022 | 29 Oct 2020 | 12 May 2022 |
| Utility: METHOD AND APPARATUS FOR PREDICTING OPTIMAL EXPLOITATION IN SHALE OIL IN-SITU CONVERSION Filling date: 8 Sep 2025 Issue date: 3 Feb 2022 | 24 Feb 2020 | 3 Feb 2022 |
| Utility: Method and Apparatus for Determining Integrated Exploitation Approach of Shale and Adjacent Oil Reservoirs Filling date: 8 Sep 2025 Issue date: 2 Dec 2021 | 24 Feb 2020 | 2 Dec 2021 |
| Utility: GAMMA RAY SPECTRUM UNFOLDING METHOD FOR ELEMENTAL CAPTURE SPECTROSCOPY LOGGING AND DEVICE THEREFOR Filling date: 8 Sep 2025 Issue date: 18 Nov 2021 | 10 Dec 2018 | 18 Nov 2021 |
| Utility: METAL-BASED DISSOLVABLE BALL SEAT, SETTING SYSTEM AND SETTING METHOD Filling date: 8 Sep 2025 Issue date: 9 Sep 2021 | 30 Sep 2020 | 9 Sep 2021 |
| Utility: CARBOXYMETHYL INULIN GRAFT POLYMER SCALE AND CORROSION INHIBITOR AND PREPARATION METHOD THEREOF Filling date: 8 Sep 2025 Issue date: 1 Jul 2021 | 30 Apr 2020 | 1 Jul 2021 |
| Utility: METHOD AND DEVICE FOR VISCOSITY-REDUCING AND UPGRADING OF LOW-GRADE HEAVY OIL Filling date: 8 Sep 2025 Issue date: 24 Jun 2021 | 29 Oct 2020 | 24 Jun 2021 |
| Utility: SHALE OIL ANALYSIS METHOD AND APPARATUS FOR CONTINUOUSLY CHARACTERIZING SATURATION OF ADSORBED OIL AND FREE OIL Filling date: 8 Sep 2025 Issue date: 18 Mar 2021 | 30 Dec 2019 | 18 Mar 2021 |
| Utility: METHOD FOR DETERMINING EFFECTIVE POROSITY OF HIGH CLAY-BEARING ROCK CORE, COMPUTER DEVICE AND COMPUTER READABLE STORAGE MEDIUM Filling date: 8 Sep 2025 Issue date: 11 Mar 2021 | 30 Dec 2019 | 11 Mar 2021 |
| Utility: METHOD FOR IDENTIFYING BOUNDARY OF SEDIMENTARY FACIES, COMPUTER DEVICE AND COMPUTER READABLE STORAGE MEDIUM Filling date: 8 Sep 2025 Issue date: 11 Feb 2021 | 7 Aug 2020 | 11 Feb 2021 |
| Utility: METHOD AND APPARATUS FOR OIL PRODUCTION BY INCREASING RESISTANCE OF BOREHOLE WALL WITH IMPROVED ENERGY UTILIZATION RAE OF INJECTION GAS Filling date: 8 Sep 2025 Issue date: 11 Feb 2021 | 20 Mar 2020 | 11 Feb 2021 |
| Utility: GASFLOW DISTRIBUTION DEVICE, GAS DISTRIBUTOR, PIPE STRING AND METHOD FOR SEPARATE-LAYER GAS INJECTION Filling date: 8 Sep 2025 Issue date: 14 Jan 2021 | 15 Apr 2020 | 14 Jan 2021 |
| Utility: METHOD AND APPARATUS FOR DETERMINING OIL-GAS-WATER INTERFACE BASED ON FORMATION PRESSURE EQUIVALENT DENSITY Filling date: 8 Sep 2025 Issue date: 14 Jan 2021 | 26 Mar 2020 | 14 Jan 2021 |
| Utility: Well Cementing Method for Improving Well Cementing Quality by Controlling Hydration Heat of Cement Slurry Filling date: 8 Sep 2025 Issue date: 24 Dec 2020 | 21 Apr 2020 | 24 Dec 2020 |
| Utility: Arylaminosilane Compound, Propylene Polymerization Catalyst And Preparation Thereof Filling date: 8 Sep 2025 Issue date: 26 Nov 2020 | 8 Apr 2020 | 26 Nov 2020 |
| Utility: SEISMIC FULL HORIZON TRACKING METHOD, COMPUTER DEVICE AND COMPUTER-READABLE STORAGE MEDIUM Filling date: 8 Sep 2025 Issue date: 15 Oct 2020 | 8 Apr 2020 | 15 Oct 2020 |
| Utility: Calculation method for dynamic fluid loss of acid-etched fracture considering wormhole propagation Filling date: 8 Sep 2025 Issue date: 24 Sep 2020 | 11 Jun 2020 | 24 Sep 2020 |
| Utility: A Regeneration Method For Liquefied Petroleum Gas Sweetening Caustic Filling date: 8 Sep 2025 Issue date: 17 Sep 2020 | 12 Apr 2019 | 17 Sep 2020 |
| Utility: Method for Determining Gas Saturation of Tight Reservoir Filling date: 8 Sep 2025 Issue date: 6 Aug 2020 | 30 Jan 2020 | 6 Aug 2020 |
| Utility: DOWNHOLE OIL, GAS, WATER AND SAND SEPARATION METHOD AND SEPARATOR Filling date: 8 Sep 2025 Issue date: 9 Jul 2020 | 12 Jan 2018 | 9 Jul 2020 |
| Utility: N,N,N',N'-TETRADODECYL-SUBSTITUTED DIPHENYL ETHER SULFONATE ANIONIC GEMINI SURFACTANT AND SYNTHESIS METHOD THEREOF Filling date: 8 Sep 2025 Issue date: 2 Jul 2020 | 22 Nov 2019 | 2 Jul 2020 |
| Utility: Nonionic Gemini surfactant of (Octylphenol polyoxyethylene ether disubstituted) dicarboxylic acid diphenyl ether and its synthesis method Filling date: 8 Sep 2025 Issue date: 2 Jul 2020 | 22 Nov 2019 | 2 Jul 2020 |
| Utility: Core-shell structured anionic nano microemulsion system, and preparation and application thereof Filling date: 8 Sep 2025 Issue date: 2 Jul 2020 | 22 Nov 2019 | 2 Jul 2020 |
| Utility: CORE-SHELL STRUCTURED NON-IONIC NANOEMULSION SYSTEM AND PREPARATION AND USE THEREOF Filling date: 8 Sep 2025 Issue date: 2 Jul 2020 | 22 Nov 2019 | 2 Jul 2020 |
| Utility: PREDICTION METHOD FOR SHALE OIL AND GAS SWEET SPOT REGION, COMPUTER DEVICE AND COMPUTER READABLE STORAGE MEDIUM Filling date: 8 Sep 2025 Issue date: 2 Jul 2020 | 17 Sep 2019 | 2 Jul 2020 |
| Utility: LOW VISCOSITY POLY-A-OLEFIN LUBRICATING OIL AND SYNTHESIS METHOD THEREOF Filling date: 8 Sep 2025 Issue date: 18 Jun 2020 | 24 Oct 2019 | 18 Jun 2020 |
| Utility: Physical Simulation Experimental Device and Method for Water Invasion and Drainage Gas Recovery in Gas Reservoirs Filling date: 8 Sep 2025 Issue date: 30 Apr 2020 | 25 Oct 2019 | 30 Apr 2020 |
| Utility: METHODS AND DEVICES FOR DETECTING MERCURY ISOTOPES IN OIL-GAS SOURCES Filling date: 8 Sep 2025 Issue date: 30 Apr 2020 | 24 Apr 2019 | 30 Apr 2020 |
| Utility: METHODS AND DEVICES FOR DETECTING MERCURY ISOTOPES IN CRUDE OIL Filling date: 8 Sep 2025 Issue date: 30 Apr 2020 | 19 Apr 2019 | 30 Apr 2020 |
| Utility: METHODS AND DEVICES FOR DETECTING MERCURY ISOTOPES IN NATURAL GAS Filling date: 8 Sep 2025 Issue date: 30 Apr 2020 | 19 Apr 2019 | 30 Apr 2020 |
| Utility: DEVICE AND METHOD FOR DETERMINING SOLUBILITY OF ELEMENTAL SULFUR IN SULFUR-CONTAINING GAS Filling date: 8 Sep 2025 Issue date: 30 Apr 2020 | 25 May 2018 | 30 Apr 2020 |
| Utility: MICROBUBBLE GENERATION DEVICE AND EQUIPMENT Filling date: 8 Sep 2025 Issue date: 23 Apr 2020 | 30 May 2019 | 23 Apr 2020 |
| Utility: STRATIFIED WATERFLOODING APPARATUS Filling date: 8 Sep 2025 Issue date: 16 Apr 2020 | 1 Aug 2019 | 16 Apr 2020 |
| Utility: METHOD FOR ACQUIRING CONVERTED WAVE, ELECTRONIC DEVICE AND READABLE STORAGE MEDIUM Filling date: 8 Sep 2025 Issue date: 2 Apr 2020 | 20 May 2019 | 2 Apr 2020 |
| Utility: LINEAR HIERARCHICAL STRUCTURE LITHIUM TITANATE MATERIAL, PREPARATION AND APPLICATION THEREOF Filling date: 8 Sep 2025 Issue date: 12 Mar 2020 | 5 Sep 2019 | 12 Mar 2020 |
| Utility: Linear porous lithium titanate material, preparation and product thereof Filling date: 8 Sep 2025 Issue date: 5 Mar 2020 | 30 Aug 2019 | 5 Mar 2020 |
| Utility: Linear Porous Titanium Dioxide Material And Preparation And Use Thereof Filling date: 8 Sep 2025 Issue date: 5 Mar 2020 | 29 Aug 2019 | 5 Mar 2020 |
| Utility: PROCESS FOR PREPARING TITANIC ACID SALT, TITANIC ACID, AND TITANIUM OXIDE HAVING CONTROLLABLE PARTICLE SIZE AND HIERARCHICAL STRUCTURE Filling date: 8 Sep 2025 Issue date: 5 Mar 2020 | 29 Aug 2019 | 5 Mar 2020 |
| Utility: PREPARATION METHOD OF A NANOTUBE HIERARCHICALLY STRUCTURED LITHIUM TITANATE AND USE AND PRODUCT THEREOF Filling date: 8 Sep 2025 Issue date: 5 Mar 2020 | 29 Aug 2019 | 5 Mar 2020 |
| Utility: Nanostructured titanic acid salts and preparation process and use thereof Filling date: 8 Sep 2025 Issue date: 5 Mar 2020 | 29 Aug 2019 | 5 Mar 2020 |
| Utility: ULTRASONIC MICROBUBBLE GENERATION METHOD, APPARATUS AND SYSTEM Filling date: 8 Sep 2025 Issue date: 5 Mar 2020 | 21 Aug 2019 | 5 Mar 2020 |
| Utility: Methods for Synthesizing Mesoporous Zeolite ETS-10 Containing Metal Without a Templating Agent Filling date: 8 Sep 2025 Issue date: 5 Mar 2020 | 13 May 2019 | 5 Mar 2020 |
| Utility: SYSTEM AND METHOD OF PERFORMING OIL DISPLACEMENT BY WATER-GAS DISPERSION SYSTEM Filling date: 8 Sep 2025 Issue date: 5 Mar 2020 | 20 Mar 2019 | 5 Mar 2020 |
| Utility: METALLOCENE COMPLEX WITH A HETEROATOM-CONTAINING PI-LIGAND AND PREPARATION METHOD THEREFOR, CATALYST SYSTEM CONTAINING THE SAME AND USE THEREOF Filling date: 8 Sep 2025 Issue date: 27 Feb 2020 | 1 Nov 2019 | 27 Feb 2020 |
| Utility: METHOD AND APPARATUS FOR AUTOMATICALLY EXTRACTING IMAGE FEATURES OF ELECTRICAL IMAGING WELL LOGGING Filling date: 8 Sep 2025 Issue date: 27 Feb 2020 | 10 Jul 2019 | 27 Feb 2020 |
| Utility: METHOD AND APPARATUS FOR AUTOMATICALLY RECOGNIZING ELECTRICAL IMAGING WELL LOGGING FACIES Filling date: 8 Sep 2025 Issue date: 27 Feb 2020 | 9 Jul 2019 | 27 Feb 2020 |
| Utility: METHOD, APPARATUS AND SYSTEM FOR DETERMINING SWEET SPOT REGION FOR SHALE OIL IN-SITU CONVERSION DEVELOPMENT Filling date: 8 Sep 2025 Issue date: 16 Jan 2020 | 11 Jul 2019 | 16 Jan 2020 |
| Utility: SHALE OIL IN-SITU LIGHTENING DEVELOPMENT METHOD, APPARATUS AND SYSTEM Filling date: 8 Sep 2025 Issue date: 16 Jan 2020 | 11 Jul 2019 | 16 Jan 2020 |
