| Utility: Carboxymethyl inulin graft polymer scale and corrosion inhibitor and preparation method thereof Filling date: 7 Sep 2025 Issue date: 16 Aug 2022 | 30 Apr 2020 | 16 Aug 2022 |
| Utility: Resistivity measurement method, device and system Filling date: 7 Sep 2025 Issue date: 16 Aug 2022 | 31 May 2019 | 16 Aug 2022 |
| Utility: Method for acquiring converted wave, electronic device and readable storage medium Filling date: 7 Sep 2025 Issue date: 2 Aug 2022 | 20 May 2019 | 2 Aug 2022 |
| Utility: Linear porous lithium titanate material, preparation and product thereof Filling date: 7 Sep 2025 Issue date: 12 Jul 2022 | 30 Aug 2019 | 12 Jul 2022 |
| Utility: Gasflow distribution device, gas distributor, pipe string and method for separate-layer gas injection Filling date: 7 Sep 2025 Issue date: 5 Jul 2022 | 15 Apr 2020 | 5 Jul 2022 |
| Utility: Physical simulation experimental device and method for water invasion and drainage gas recovery in gas reservoirs Filling date: 7 Sep 2025 Issue date: 7 Jun 2022 | 25 Oct 2019 | 7 Jun 2022 |
| Utility: Low viscosity poly-a-olefin lubricating oil and synthesis method thereof Filling date: 7 Sep 2025 Issue date: 7 Jun 2022 | 24 Oct 2019 | 7 Jun 2022 |
| Utility: Ultrasonic microbubble generation method, apparatus and system Filling date: 7 Sep 2025 Issue date: 31 May 2022 | 21 Aug 2019 | 31 May 2022 |
| Utility: Method for identifying boundary of sedimentary facies, computer device and computer readable storage medium Filling date: 7 Sep 2025 Issue date: 10 May 2022 | 7 Aug 2020 | 10 May 2022 |
| Utility: Gamma ray spectrum unfolding method for elemental capture spectroscopy logging and device therefor Filling date: 7 Sep 2025 Issue date: 26 Apr 2022 | 10 Dec 2018 | 26 Apr 2022 |
| Utility: Method and catalyst for selective oligomerization of ethylene Filling date: 7 Sep 2025 Issue date: 12 Apr 2022 | 19 Jun 2019 | 12 Apr 2022 |
| Utility: Method for determining gas saturation of tight reservoir Filling date: 7 Sep 2025 Issue date: 8 Mar 2022 | 30 Jan 2020 | 8 Mar 2022 |
| Utility: Method and apparatus for determining oil-gas-water interface based on formation pressure equivalent density Filling date: 7 Sep 2025 Issue date: 22 Feb 2022 | 26 Mar 2020 | 22 Feb 2022 |
| Utility: Device and method for determining solubility of elemental sulfur in sulfur-containing gas Filling date: 7 Sep 2025 Issue date: 22 Feb 2022 | 25 May 2018 | 22 Feb 2022 |
| Utility: Oil and gas zone effectiveness evaluation method and apparatus Filling date: 7 Sep 2025 Issue date: 7 Dec 2021 | 28 Sep 2018 | 7 Dec 2021 |
| Utility: Microbubble generation device and equipment Filling date: 7 Sep 2025 Issue date: 23 Nov 2021 | 30 May 2019 | 23 Nov 2021 |
| Utility: Downhole oil, gas, water and sand separation method and separator Filling date: 7 Sep 2025 Issue date: 23 Nov 2021 | 12 Jan 2018 | 23 Nov 2021 |
| Utility: Core-shell structured anionic nano microemulsion system, and preparation and application thereof Filling date: 7 Sep 2025 Issue date: 16 Nov 2021 | 22 Nov 2019 | 16 Nov 2021 |
| Utility: Method and apparatus for identifying low permeable conglomerate diagenetic trap Filling date: 7 Sep 2025 Issue date: 16 Nov 2021 | 29 Jun 2018 | 16 Nov 2021 |
| Utility: Method for obtaining conversion relationship between dynamic and static elastic parameters Filling date: 7 Sep 2025 Issue date: 16 Nov 2021 | 19 Apr 2017 | 16 Nov 2021 |
| Utility: Regeneration method for liquefied petroleum gas sweetening caustic Filling date: 7 Sep 2025 Issue date: 12 Oct 2021 | 12 Apr 2019 | 12 Oct 2021 |
| Utility: Monitoring system for deformations of gas storage Filling date: 7 Sep 2025 Issue date: 5 Oct 2021 | 14 Aug 2018 | 5 Oct 2021 |
| Utility: Methods and devices for detecting mercury isotopes in oil-gas sources Filling date: 7 Sep 2025 Issue date: 14 Sep 2021 | 24 Apr 2019 | 14 Sep 2021 |
| Utility: Methods and devices for detecting mercury isotopes in natural gas Filling date: 7 Sep 2025 Issue date: 14 Sep 2021 | 19 Apr 2019 | 14 Sep 2021 |
| Utility: Apparatus and method for determining volume stability of well cement Filling date: 7 Sep 2025 Issue date: 7 Sep 2021 | 30 Nov 2018 | 7 Sep 2021 |
| Utility: Method and system for determining heterogeneous carbonate reservoir saturation exponent Filling date: 7 Sep 2025 Issue date: 7 Sep 2021 | 15 May 2017 | 7 Sep 2021 |
| Utility: Preparation method for modified molecular sieve and modified molecular sieve-containing catalytic cracking catalyst Filling date: 7 Sep 2025 Issue date: 7 Sep 2021 | 4 Aug 2016 | 7 Sep 2021 |
| Utility: Core-shell structured non-ionic nanoemulsion system and preparation and use thereof Filling date: 7 Sep 2025 Issue date: 24 Aug 2021 | 22 Nov 2019 | 24 Aug 2021 |
| Utility: System and method of performing oil displacement by water-gas dispersion system Filling date: 7 Sep 2025 Issue date: 24 Aug 2021 | 20 Mar 2019 | 24 Aug 2021 |
| Utility: Shale oil analysis method and apparatus for continuously characterizing saturation of adsorbed oil and free oil Filling date: 7 Sep 2025 Issue date: 10 Aug 2021 | 30 Dec 2019 | 10 Aug 2021 |
| Utility: Magnesium alkoxide catalyst support and the preparation method and use thereof Filling date: 7 Sep 2025 Issue date: 10 Aug 2021 | 27 Nov 2018 | 10 Aug 2021 |
| Utility: Method and apparatus for determining permeability of reservoir Filling date: 7 Sep 2025 Issue date: 10 Aug 2021 | 12 Oct 2018 | 10 Aug 2021 |
| Utility: Method for modifying molecular sieve and a catalytic cracking catalyst containing the molecular sieve Filling date: 7 Sep 2025 Issue date: 10 Aug 2021 | 4 Aug 2016 | 10 Aug 2021 |
| Utility: Low-density, high-strength degradable temporary pugging agent and the preparation method and use thereof Filling date: 7 Sep 2025 Issue date: 6 Jul 2021 | 28 Dec 2018 | 6 Jul 2021 |
| Utility: Method and apparatus for evaluating exploitation value of a geological resource Filling date: 7 Sep 2025 Issue date: 15 Jun 2021 | 19 Jul 2018 | 15 Jun 2021 |
| Utility: Method and apparatus for determining oil output quantity and gas output quantity of shale oil in-situ conversion Filling date: 7 Sep 2025 Issue date: 8 Jun 2021 | 28 Feb 2019 | 8 Jun 2021 |
| Utility: Olefin coordination polymerization catalyst, and preparation method and application thereof Filling date: 7 Sep 2025 Issue date: 25 May 2021 | 16 Oct 2018 | 25 May 2021 |
| Utility: Stratified waterflooding apparatus Filling date: 7 Sep 2025 Issue date: 18 May 2021 | 1 Aug 2019 | 18 May 2021 |
| Utility: Method for automatically extracting image features of electrical imaging well logging, computer equipment and non-transitory computer readable medium Filling date: 7 Sep 2025 Issue date: 18 May 2021 | 10 Jul 2019 | 18 May 2021 |
| Utility: Stratum component optimization determination method and device Filling date: 7 Sep 2025 Issue date: 18 May 2021 | 10 Oct 2016 | 18 May 2021 |
| Utility: Method and apparatus for automatically recognizing electrical imaging well logging facies Filling date: 7 Sep 2025 Issue date: 11 May 2021 | 9 Jul 2019 | 11 May 2021 |
| Utility: Shale oil in-situ lightening development method, apparatus and system Filling date: 7 Sep 2025 Issue date: 4 May 2021 | 11 Jul 2019 | 4 May 2021 |
| Utility: Phase transition material fluid and proppant formed therefrom Filling date: 7 Sep 2025 Issue date: 20 Apr 2021 | 27 Mar 2019 | 20 Apr 2021 |
| Utility: Method for determining effective porosity of high clay-bearing rock core, computer device and computer readable storage medium Filling date: 7 Sep 2025 Issue date: 13 Apr 2021 | 30 Dec 2019 | 13 Apr 2021 |
| Utility: Injection stimulation agent for water injection well and the preparation method and application thereof Filling date: 7 Sep 2025 Issue date: 13 Apr 2021 | 21 Dec 2018 | 13 Apr 2021 |
| Utility: Acoustic sensor for rock crack detection Filling date: 7 Sep 2025 Issue date: 13 Apr 2021 | 25 Jun 2018 | 13 Apr 2021 |
| Utility: On-line diverting acid for continuous injection into water injection wells and a preparation method thereof Filling date: 7 Sep 2025 Issue date: 30 Mar 2021 | 4 Jan 2019 | 30 Mar 2021 |
| Utility: Method of acquiring rock component content of stratum Filling date: 7 Sep 2025 Issue date: 30 Mar 2021 | 30 Mar 2018 | 30 Mar 2021 |
| Utility: Monitoring system for deformations and destructions of gas storage Filling date: 7 Sep 2025 Issue date: 2 Mar 2021 | 25 Jun 2018 | 2 Mar 2021 |
| Utility: Olefin coordination polymerization catalyst and use thereof Filling date: 7 Sep 2025 Issue date: 23 Feb 2021 | 12 Oct 2018 | 23 Feb 2021 |
