Inventor · disambiguated record
Subhash Chandrabose Ayirala
Also filed as: AYIRALA SUBHASH C · AYIRALA SUBHASH CHANDRABOSE · Ayirala Subhash
65 granted patents·21 pending applications·73 citations·filing 2016–2025
98Inventor score
Files withSAUDI ARABIAN OIL CO86
Top patents by PatentIndex Score
86 records- 0196US10590330B2Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2018·Granted Mar 17, 2020·7 cites·3 claims
- 0296US10000687B2Smart water flooding processes for increasing hydrocarbon recoverySAUDI ARABIAN OIL CO·Filed 2016·Granted Jun 19, 2018·12 cites·23 claims
- 0395US10590329B2Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2018·Granted Mar 17, 2020·7 cites·3 claims
- 0495US10287486B2Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2018·Granted May 14, 2019·11 cites·12 claims
- 0594US10723937B2Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2020·Granted Jul 28, 2020·4 cites·4 claims
- 0693US11214730B1Low pH-based oil recovery method for carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2020·Granted Jan 4, 2022·5 cites·21 claims
- 0791US11421148B1Injection of tailored water chemistry to mitigate foaming agents retention on reservoir formation surfaceSAUDI ARABIAN OIL CO·Filed 2021·Granted Aug 23, 2022·3 cites·18 claims
- 0891US10106726B2Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2018·Granted Oct 23, 2018·3 cites·10 claims
- 0989US10429372B2Smart water flooding processes for increasing hydrocarbon recoverySAUDI ARABIAN OIL CO·Filed 2018·Granted Oct 1, 2019·3 cites·20 claims
- 1088US10287485B2Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2016·Granted May 14, 2019·2 cites·12 claims
- 1187US11414986B1Detecting carbon dioxide leakage in the fieldSAUDI ARABIAN OIL CO·Filed 2021·Granted Aug 16, 2022·2 cites·8 claims
- 1286US11548796B2Humidification dehumidification processes using waste heat extracted from abandoned wellsSAUDI ARABIAN OIL CO·Filed 2021·Granted Jan 10, 2023·1 cites·16 claims
- 1384US12110772B1In-reservoir carbon dioxide release for enhanced hydrocarbon recoverySAUDI ARABIAN OIL CO·Filed 2023·Granted Oct 8, 2024·1 cites·23 claims
- 1484US10550312B2Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2019·Granted Feb 4, 2020·1 cites·15 claims
- 1582US10648305B2Systems and methods for carbonated water flooding of hydrocarbon reservoirsSAUDI ARABIAN OIL CO·Filed 2018·Granted May 12, 2020·4 cites·25 claims
- 1682US10479928B2Water treatment schemes for injection water flooding recovery processes in carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2017·Granted Nov 19, 2019·1 cites·14 claims
- 1781US11542812B2In-line monitoring of zeta potential measurementsSAUDI ARABIAN OIL CO·Filed 2020·Granted Jan 3, 2023·2 cites·30 claims
- 1881US10988673B2Polymer flooding processes for viscous oil recovery in carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2019·Granted Apr 27, 2021·0 cites·5 claims
- 1981US10767458B2Characterization of crude oil-water interfacial film rigidity to enhance oil recoverySAUDI ARABIAN OIL CO·Filed 2018·Granted Sep 8, 2020·1 cites·21 claims
- 2080US12049411B2Systems for humidification dehumidification that use waste heat extracted from abandoned wellsSAUDI ARABIAN OIL CO·Filed 2022·Granted Jul 30, 2024·0 cites·14 claims
- 2178US10961831B2Polymer flooding processes for viscous oil recovery in carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2019·Granted Mar 30, 2021·1 cites·12 claims
- 2278US2025236777A1Water-based drilling mud formulation using wastewater dischargeSAUDI ARABIAN OIL CO·Filed 2025·Application pending·0 cites
- 2374US10968383B2Water treatment schemes for injection water flooding recovery processes in carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2019·Granted Apr 6, 2021·0 cites·12 claims
- 2474US10920128B2Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2019·Granted Feb 16, 2021·0 cites·3 claims
- 2573US11066910B2Alkaline water flooding processes for enhanced oil recovery in carbonatesSAUDI ARABIAN OIL CO·Filed 2019·Granted Jul 20, 2021·2 cites·20 claims
- 2673US10920129B2Oil recovery process using an oil recovery composition of aqueous salt solution and dilute polymer for carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2020·Granted Feb 16, 2021·0 cites·6 claims
- 2773US10889750B2Oil recovery process using an oil recovery composition of aqueous salt solution and metal oxide nanoparticles for carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2020·Granted Jan 12, 2021·0 cites·6 claims
- 2873US2023330658A1Calcite coated microfluidic cell and methods thereofSAUDI ARABIAN OIL CO·Filed 2022·Application pending·0 cites
- 2973US2025044207A1Method of robust surfactant screening for foam applicationsSAUDI ARABIAN OIL CO·Filed 2023·Application pending·0 cites
- 3072US10457851B2Polymer flooding processes for viscous oil recovery in carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2016·Granted Oct 29, 2019·0 cites·11 claims
- 3171US2024166934A1Water-based drilling mud formulation using wastewater dischargeSAUDI ARABIAN OIL CO·Filed 2022·Application pending·0 cites
- 3269US12467347B2Enhanced oil recovery using carbonated water and two salt solutionsSAUDI ARABIAN OIL CO·Filed 2024·Granted Nov 11, 2025·0 cites·14 claims
- 3369US2025354246A1Calcite channel nanofluidicsSAUDI ARABIAN OIL CO·Filed 2024·Application pending·0 cites
- 3468US12492621B2Enhanced oil recovery using fatty acid saltsSAUDI ARABIAN OIL CO·Filed 2024·Granted Dec 9, 2025·0 cites·15 claims
- 3567US11939521B2Reuse of hypersaline brine with ionic liquidsSAUDI ARABIAN OIL CO·Filed 2022·Granted Mar 26, 2024·0 cites·10 claims
- 3667US11254858B2Stabilized foams with tailored water chemistry for mobility control in gas injection processesSAUDI ARABIAN OIL CO·Filed 2020·Granted Feb 22, 2022·0 cites·8 claims
- 3766US12391567B1Extraction of alkaline earth metal hydroxides from produced oilfield brineSAUDI ARABIAN OIL CO·Filed 2024·Granted Aug 19, 2025·0 cites·8 claims
- 3865US12305489B2Surfactant formulation and method for water flood assisted CO2 sequestrationSAUDI ARABIAN OIL CO·Filed 2023·Granted May 20, 2025·0 cites·20 claims
- 3965US12286866B2Method for enhanced storage of carbon dioxide in geological formationsSAUDI ARABIAN OIL CO·Filed 2022·Granted Apr 29, 2025·0 cites·9 claims
- 4065US10793767B2Stabilized foams with tailored water chemistry for mobility control in gas injection processesSAUDI ARABIAN OIL CO·Filed 2018·Granted Oct 6, 2020·0 cites·18 claims
- 4164US12006794B1Thermochemical fluid injection to prevent cool front invasion in CO2 geothermal reservoirsSAUDI ARABIAN OIL CO·Filed 2023·Granted Jun 11, 2024·0 cites·19 claims
- 4264US2025115496A1Methods for treating produced watersSAUDI ARABIAN OIL CO·Filed 2023·Application pending·0 cites
- 4364US2025216311A1Core flooding for electrically improved oil recovery studySAUDI ARABIAN OIL CO·Filed 2024·Application pending·0 cites
- 4463US12158062B2Sweep efficiency of carbon dioxide gas injectionSAUDI ARABIAN OIL CO·Filed 2022·Granted Dec 3, 2024·0 cites·19 claims
- 4563US2025087443A1Nanofluidic cell for characterization of nano-bubbles in a simulated reservoirSAUDI ARABIAN OIL CO·Filed 2023·Application pending·0 cites
- 4662US2024426734A1Novel microfluidic cell fabrication for electrical enhanced oil recovery studiesSAUDI ARABIAN OIL CO·Filed 2023·Application pending·0 cites
- 4762US2025236708A1Core-Shell Ion-Exchange Resin Formed by Vibrational Nozzle TechniqueSAUDI ARABIAN OIL CO·Filed 2024·Application pending·0 cites
- 4861US12247161B2Gel formation from reaction heatingSAUDI ARABIAN OIL CO·Filed 2023·Granted Mar 11, 2025·0 cites·22 claims
- 4961US2025249445A1Method and system for production of produced water and desalination treatment resinsSAUDI ARABIAN OIL CO·Filed 2024·Application pending·0 cites
- 5061US2025230077A1Surface slick cleanup using fatty acid saltsSAUDI ARABIAN OIL CO·Filed 2024·Application pending·0 cites
Showing the top 50 of 86 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →