Assignee
UNIV SOUTHWEST PETROLEUM
CN·327 granted patents·69 pending applications·583 citations·filing 2012–2025
Top patents by PatentIndex Score
396 records- 0198US10829681B1Modified nano-silica plugging agent, water-based drilling fluid, and preparation method and use thereofUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted Nov 10, 2020·24 cites·16 claims
- 0298US10829679B1Micro-nanometer plugging anti-collapse drilling fluid and preparation method and use thereofUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted Nov 10, 2020·17 cites·17 claims
- 0397US11225594B1Drilling fluid for enhancing stratum pressure bearing capacity and preparation method and method of using thereofUNIV SOUTHWEST PETROLEUM·Filed 2021·Granted Jan 18, 2022·6 cites·16 claims
- 0497US10570239B1Surface-active two-tailed hydrophobic associated polymer and preparation method thereofUNIV SOUTHWEST PETROLEUM·Filed 2017·Granted Feb 25, 2020·23 cites·6 claims
- 0597US10533122B1Strong plugging drilling fluid composition and preparation method thereof, and use thereofUNIV SOUTHWEST PETROLEUM·Filed 2019·Granted Jan 14, 2020·25 cites·16 claims
- 0695US11279621B1Preparation method of amphoteric two-dimensional nanosheetUNIV SOUTHWEST PETROLEUM·Filed 2021·Granted Mar 22, 2022·13 cites·8 claims
- 0794US10989576B1Method and system for obtaining micro-nano level fracture model and evaluating plugging performance of drilling fluidUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted Apr 27, 2021·5 cites·11 claims
- 0894US10487255B1Expandable plugging agent and preparation method thereof, micro-capsule plugging agent, water-based drilling fluid, and use thereofUNIV SOUTHWEST PETROLEUM·Filed 2019·Granted Nov 26, 2019·9 cites·16 claims
- 0994US10287475B1Shale inhibitor and preparation method thereof, water-based drilling fluid, and shale gas drilling and extraction methodUNIV SOUTHWEST PETROLEUM·Filed 2018·Granted May 14, 2019·18 cites·18 claims
- 1093US11781062B1Bionics-based efficiently transported and packed proppant and preparation method thereofUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Oct 10, 2023·4 cites·10 claims
- 1193US11604132B1Testing device and evaluation method for sensitivity damage of core permeability tensorUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Mar 14, 2023·9 cites·8 claims
- 1293US11525079B1Preparation method of fully adaptive modified nanographene plugging type anti-collapse drilling fluid and use thereofUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Dec 13, 2022·2 cites·6 claims
- 1393US11453814B2Pressure-bearing plugging agent and preparation method and use thereofUNIV SOUTHWEST PETROLEUM·Filed 2021·Granted Sep 27, 2022·2 cites·12 claims
- 1493US11396621B1Pressure-bearing plugging composition, pressure-bearing plugging slurry and preparation method and use thereofUNIV SOUTHWEST PETROLEUM·Filed 2021·Granted Jul 26, 2022·3 cites·12 claims
- 1593US10677961B1Method for optimizing perforation parameters to maintain uniform fracture growth in multi-stage hydraulic fracturing of horizontal wellUNIV SOUTHWEST PETROLEUM·Filed 2019·Granted Jun 9, 2020·59 cites·7 claims
- 1693US9926482B1Deep-well polysulfonate drilling fluid and preparation method thereofUNIV SOUTHWEST PETROLEUM·Filed 2017·Granted Mar 27, 2018·12 cites·16 claims
- 1792US12350646B1CO2 gas-soluble silicon nanofluid and preparation method thereforUNIV SOUTHWEST PETROLEUM·Filed 2025·Granted Jul 8, 2025·1 cites·7 claims
- 1892US11598205B1Method for comprehensive evaluation of shale fracability under the geology-engineering “double-track” systemUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Mar 7, 2023·6 cites·7 claims
- 1992US11536123B1Method for enhancing the recovery factor of heavy oil by in-situ oil-water emulsion with high phase inversion pointUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Dec 27, 2022·6 cites·6 claims
- 2092US11280172B2Method for evaluating and preventing creep damage to conductivity of hydraulic fracture in gas reservoirsUNIV SOUTHWEST PETROLEUM·Filed 2021·Granted Mar 22, 2022·4 cites·2 claims
- 2192US10823646B1Method for evaluating the longitudinal deformation of proppant packUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted Nov 3, 2020·12 cites·6 claims
- 2292US10689972B1Automatic diagnosis method for wellhead pressure curve of hydraulic fracturing in shale gas horizontal wellUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted Jun 23, 2020·79 cites·5 claims
- 2392US10233377B1Gel plugging slurry for well drilling and preparation method thereof, and slug plugging methodUNIV SOUTHWEST PETROLEUM·Filed 2018·Granted Mar 19, 2019·7 cites·16 claims
- 2491US11733425B1Full wellbore pressure calculation method, device and computer readable storage medium for fracturing horizontal wellUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Aug 22, 2023·10 cites·5 claims
- 2591US11320564B1Method and system for determining single-well dynamic reserve and recoverable reserve of gas-drive reservoirUNIV SOUTHWEST PETROLEUM·Filed 2021·Granted May 3, 2022·7 cites·9 claims
- 2691US10962354B1Selection method of loss control materials for lost circulation control in fractured reservoirs based on photoelastic experimentsUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted Mar 30, 2021·6 cites·4 claims
- 2791US10889745B1Plugging agent with temperature-resistant, salt-resistant and high-expansion for plugging large fractures and preparation method thereofUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted Jan 12, 2021·18 cites·2 claims
- 2891US10017679B1Plugging agent for improving formation bearing capacity and preparation method thereofUNIV SOUTHWEST PETROLEUM·Filed 2017·Granted Jul 10, 2018·14 cites·12 claims
- 2990US12146104B1CO2 responsive core-shell multi-stage swelling microsphere and preparation method thereofUNIV SOUTHWEST PETROLEUM·Filed 2024·Granted Nov 19, 2024·2 cites·5 claims
- 3090US12103872B1Polycyclic azide desulfurizer and synthesis method thereofUNIV SOUTHWEST PETROLEUM·Filed 2023·Granted Oct 1, 2024·1 cites·6 claims
- 3190US11834928B1Drill string rotation controller for directional drillingUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Dec 5, 2023·4 cites·11 claims
- 3290US11568111B2Numerical simulation method for proppant transport considering wall-retardation effectUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Jan 31, 2023·5 cites·4 claims
- 3390US11125068B2Channel fracturing method with alternative injection of conventional and capsule-type soluble proppantsUNIV SOUTHWEST PETROLEUM·Filed 2021·Granted Sep 21, 2021·4 cites·4 claims
- 3490US10942105B1Experimental device for carbon dioxide imbition, diffusion and oil discharge in tight oil reservoirUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted Mar 9, 2021·8 cites·5 claims
- 3590US10920123B2Thermosensitive self-plugging bentonite and preparation method thereof and water-based drilling fluidUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted Feb 16, 2021·4 cites·13 claims
- 3690US10336932B1Micro-nano composite plugging agent for drilling fluid and preparation method thereof, and drilling fluid and use thereofUNIV SOUTHWEST PETROLEUM·Filed 2019·Granted Jul 2, 2019·4 cites·13 claims
- 3789US11873444B1Nanographene and preparation method and use thereof and oil-based drilling fluidUNIV SOUTHWEST PETROLEUM·Filed 2023·Granted Jan 16, 2024·1 cites·12 claims
- 3889US11009443B2Method for dynamic imbibition capacity of shaleUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted May 18, 2021·2 cites·1 claims
- 3988US12345665B1Calculation method for fractal dimension of shale poresUNIV SOUTHWEST PETROLEUM·Filed 2024·Granted Jul 1, 2025·2 cites·6 claims
- 4088US12153004B1Method for calculating surface relaxation rate of shaleUNIV SOUTHWEST PETROLEUM·Filed 2024·Granted Nov 26, 2024·1 cites·4 claims
- 4188US11788664B1Intelligent maintenance and repair robot for small diameter and small flow oil and gas pipelines and method thereofUNIV SOUTHWEST PETROLEUM·Filed 2023·Granted Oct 17, 2023·3 cites·6 claims
- 4288US11692121B2Tertiary amine-grafted silica nano-plugging agent and water-based drilling fluidsUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Jul 4, 2023·1 cites·6 claims
- 4388US11513051B1Shale stress sensitivity testing device and methodUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Nov 29, 2022·2 cites·8 claims
- 4488US11408281B2Method for determining sand pumping parameters based on width distribution of fractureUNIV SOUTHWEST PETROLEUM·Filed 2021·Granted Aug 9, 2022·4 cites·5 claims
- 4588US11313775B2Device and method for evaluating fracture initiation and propagation, and stress sensitivity of propped fractureUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted Apr 26, 2022·3 cites·8 claims
- 4688US11268569B1Free slant platformUNIV SOUTHWEST PETROLEUM·Filed 2021·Granted Mar 8, 2022·5 cites·7 claims
- 4788US10782220B1Cross-scale wide-spectrum particle size plugging formula granularity analysis methodUNIV SOUTHWEST PETROLEUM·Filed 2020·Granted Sep 22, 2020·4 cites·2 claims
- 4888US10724906B1Non-contact real-time stress monitoring method for buried pipelineUNIV SOUTHWEST PETROLEUM·Filed 2019·Granted Jul 28, 2020·14 cites·5 claims
- 4988US10005946B1High-temperature cross-linking deep-well drilling fluid and preparation method thereofUNIV SOUTHWEST PETROLEUM·Filed 2017·Granted Jun 26, 2018·5 cites·16 claims
- 5087US12105005B1Apparatus for evaluating dried crystal error in CO2 drying experiment and use method thereofUNIV SOUTHWEST PETROLEUM·Filed 2024·Granted Oct 1, 2024·1 cites·7 claims
Showing the top 50 of 396 patent records by PatentIndex Score.
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