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
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