Assignee
UNIV YANGTZE
CN·45 granted patents·18 pending applications·30 citations·filing 2004–2025
Top patents by PatentIndex Score
63 records- 0191US11472997B1Temperature-responsive self-degradable temporary plugging agent and preparation method thereof as well as its application in plugging the wellboreUNIV YANGTZE·Filed 2021·Granted Oct 18, 2022·9 cites·17 claims
- 0290US11787893B1Polyaspartic acid derivative and preparation method and use thereof as lubricant, and water-based drilling fluid and use thereofUNIV YANGTZE·Filed 2023·Granted Oct 17, 2023·2 cites·16 claims
- 0387US11834387B1Quaternary ammonium salt and preparation method and use thereof as inhibitor, and water-based drilling fluid and use thereofUNIV YANGTZE·Filed 2023·Granted Dec 5, 2023·1 cites·14 claims
- 0485US11352866B1Enhanced oil recovery method with single well huff and puff and inter-segment oil displacement after horizontal well fracturingUNIV YANGTZE·Filed 2021·Granted Jun 7, 2022·3 cites·7 claims
- 0585US10081752B2Multifunctional slick water concentrate integrating properties of drag reducer, flow back surfactant and clay stabilizerUNIV YANGTZE·Filed 2017·Granted Sep 25, 2018·4 cites·8 claims
- 0685US10081753B2Oil-phase-free triple-play slick water concentration system with effects of synergistically reducing drag, assisting drainage and promoting clay stabilizationUNIV YANGTZE·Filed 2017·Granted Sep 25, 2018·4 cites·9 claims
- 0779US11162347B2Slick water volumetric fracturing method with large liquid volume, high flow rate, large preflush and low sand ratioUNIV YANGTZE·Filed 2019·Granted Nov 2, 2021·4 cites·7 claims
- 0876US12441927B1Plugging material, preparation method therefor, and use thereofUNIV YANGTZE·Filed 2024·Granted Oct 14, 2025·0 cites·11 claims
- 0974US12174331B1Projection-based embedded discrete fracture model using hybrid of two-point flux approximation and mimetic finite difference (TPFA-MFD) methodUNIV YANGTZE·Filed 2024·Granted Dec 24, 2024·1 cites·6 claims
- 1072US10323177B2Combo hydraulic fracturing fluid concentrate having both drag reduction and sand-carrying propertiesUNIV YANGTZE·Filed 2017·Granted Jun 18, 2019·1 cites·6 claims
- 1171US12286583B1Polymer viscosity reducer for water-based drilling fluid and preparation method thereofUNIV YANGTZE·Filed 2024·Granted Apr 29, 2025·0 cites·14 claims
- 1270US2026071112A1Gel temporary plugging agent and preparation method and use thereofUNIV YANGTZE·Filed 2025·Application pending·0 cites
- 1369US2025197758A1Non-sulfonated melamine resin viscosity reducer for drilling fluid and preparation method thereofUNIV YANGTZE·Filed 2024·Application pending·0 cites
- 1465US11479714B2Profile control and oil displacement agent for oil reservoir and preparation method thereofUNIV YANGTZE·Filed 2021·Granted Oct 25, 2022·0 cites·15 claims
- 1565US2024018049A1Method and device for preparing artificial core for petroleum geological explorationUNIV YANGTZE·Filed 2023·Application pending·0 cites
- 1663US2025304503A1Preparation method and use of high-entropy alloy (hea)@carbon fiber composite nanomaterialUNIV YANGTZE·Filed 2025·Application pending·0 cites
- 1762US11021919B2Mud circulation system for reducing the swab pressure while tripping outUNIV YANGTZE·Filed 2019·Granted Jun 1, 2021·1 cites·4 claims
- 1862US2026015537A1Acid-hydrolyzable residue-free drilling fluid and preparation method thereofUNIV YANGTZE·Filed 2024·Application pending·0 cites
- 1960US12134730B2Asphalt-like material and preparation method and use thereof as plugging agent, and water-based drilling fluidUNIV YANGTZE·Filed 2023·Granted Nov 5, 2024·0 cites·13 claims
- 2060US10793759B2Sulfur- and phosphorus-free extreme pressure lubricant and preparation method and application thereofUNIV YANGTZE·Filed 2019·Granted Oct 6, 2020·0 cites·19 claims
- 2160US2026086261A1Oil-water identification method based on conductivity dispersion characteristics of undisturbed formationUNIV YANGTZE·Filed 2025·Application pending·0 cites
- 2259US2026043319A1System for intelligently recovering water flooded layer of oil reservoir based on spiking neural networkUNIV YANGTZE·Filed 2025·Application pending·0 cites
- 2358US12140584B1Methods for evaluating production potential for volume fraturing of shale oil reservoirs and determing soaking timesUNIV YANGTZE·Filed 2024·Granted Nov 12, 2024·0 cites·4 claims
- 2458US11891563B2pH-sensitive temporary plugging agent, preparation method thereof, and use thereof in exploitation of low-permeability oil reservoirUNIV YANGTZE·Filed 2021·Granted Feb 6, 2024·0 cites·7 claims
- 2558US11702582B2Biochemical viscosity reducer for heavy oil and preparation method thereofUNIV YANGTZE·Filed 2021·Granted Jul 18, 2023·0 cites·8 claims
- 2658US2026003098A1Porosity and permeability model method and system for delta front channel based on spatial trend constraintUNIV YANGTZE·Filed 2024·Application pending·0 cites
- 2756US11879101B2Brevibacillus agri, preparation thereof, method for preparing surfactant and use thereofUNIV YANGTZE·Filed 2021·Granted Jan 23, 2024·0 cites·10 claims
- 2856US11845069B2Catalyst composition, a process for preparing the catalyst composition, and a use of the catalyst compositionUNIV YANGTZE·Filed 2022·Granted Dec 19, 2023·0 cites·4 claims
- 2956US2026048313A1Water training integrated machine for dragon boat racingUNIV YANGTZE·Filed 2025·Application pending·0 cites
- 3054US11970661B2Combined catalytic viscosity reducing system and a use of the combined systemUNIV YANGTZE·Filed 2022·Granted Apr 30, 2024·0 cites·6 claims
- 3154US11959015B2Double-response self-degradable temporary plugging agent and preparation method thereofUNIV YANGTZE·Filed 2021·Granted Apr 16, 2024·0 cites·12 claims
- 3254US2025078541A1Method for detecting infrared ship target based on improved yolov7UNIV YANGTZE·Filed 2023·Application pending·0 cites
- 3353US11414511B2Carboxymethyl inulin graft polymer scale and corrosion inhibitor and preparation method thereofUNIV YANGTZE·Filed 2020·Granted Aug 16, 2022·0 cites·8 claims
- 3453US11008496B2Composition for preparing anti-wear lubricant for drilling fluid and preparation method of anti-wear lubricant for drilling fluid and drilling fluidUNIV YANGTZE·Filed 2019·Granted May 18, 2021·0 cites·12 claims
- 3553US10836947B2Water-based drilling fluids for deepwater drilling and use thereofUNIV YANGTZE·Filed 2019·Granted Nov 17, 2020·0 cites·10 claims
- 3652US11692981B2Device for evaluating damage of fracturing fluid to reservoir and operation method thereofUNIV YANGTZE·Filed 2021·Granted Jul 4, 2023·0 cites·6 claims
- 3752US11246848B2Three-dimensional cage-like hyperbranched monomer, and preparation method and application thereofUNIV YANGTZE·Filed 2020·Granted Feb 15, 2022·0 cites·9 claims
- 3852US2025230737A1Methods, systems, and media for optimization of fracture parameters of segmented multi-cluster fracturing in horizontal wells of continental shalesUNIV YANGTZE·Filed 2024·Application pending·0 cites
- 3951US11946327B2Automatic rheological parameter measuring system and use method for flowing drilling fluid with high temperature and high-pressureUNIV YANGTZE·Filed 2021·Granted Apr 2, 2024·0 cites·6 claims
- 4050US11447589B2Temperature-resistant and anti-collapse multi-branched polymer fluid loss reducer and preparation method thereofUNIV YANGTZE·Filed 2019·Granted Sep 20, 2022·0 cites·5 claims
- 4150US2023032664A1Iron-reducing Tessaraccocus Oleiagri Strain DH10 and Applications thereofUNIV YANGTZE·Filed 2021·Application pending·0 cites
- 4250US2022395786A1Thickening carbon dioxide displacement visual analog deviceUNIV YANGTZE·Filed 2022·Application pending·0 cites
- 4349US11619538B2Device for calibrating oil-water two-phase flow sensorUNIV YANGTZE·Filed 2021·Granted Apr 4, 2023·0 cites·8 claims
- 4449US2026036035A1Real-time inversion method of multi-measurement point and multi-parameter drilling, device, media and productUNIV YANGTZE·Filed 2024·Application pending·0 cites
- 4548US12512783B2Window operation management systemUNIV YANGTZE·Filed 2023·Granted Dec 30, 2025·0 cites·9 claims
- 4648US11136865B2Integrated construction method of fracturing and tertiary oil recovery for low-permeability reservoirUNIV YANGTZE·Filed 2019·Granted Oct 5, 2021·0 cites·6 claims
- 4748US11002094B2Three-dimensional hydraulic oscillatorUNIV YANGTZE·Filed 2019·Granted May 11, 2021·0 cites·7 claims
- 4847US11841355B2Intelligent quantitative microscopic identification system and intelligent identification method for whole rock polished sectionsUNIV YANGTZE·Filed 2021·Granted Dec 12, 2023·0 cites·13 claims
- 4947US2023334109A1Method For Significantly Improving The Online Access Speed Of Matlab Web AppUNIV YANGTZE·Filed 2022·Application pending·0 cites
- 5046US10513649B2Reverse emulsion-based slick water concentration system with drag reduction, flow back enhancement and clay stabilization functionsUNIV YANGTZE·Filed 2017·Granted Dec 24, 2019·0 cites·2 claims
Showing the top 50 of 63 patent records by PatentIndex Score.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →