Inventor · disambiguated record
Ashok Santra
Also filed as: SANTRA ASHOK · SANTRA ASHOK K · SANTRA ASHOK KUMAR
98 granted patents·29 pending applications·1,044 citations·filing 2003–2025
99Inventor score
Files withSAUDI ARABIAN OIL CO53HALLIBURTON ENERGY SERV INC36ARAMCO SERVICES CO11HALLIBURTON ENERGY SERVICES INC7PELLETIER MICHAEL T4
Top patents by PatentIndex Score
127 records- 0198US11377944B2Methods of suspending proppants in hydraulic fracturing fluidSAUDI ARABIAN OIL CO·Filed 2020·Granted Jul 5, 2022·6 cites·20 claims
- 0298US8619256B1Systems and methods for monitoring the properties of a fluid cement composition in a flow pathPELLETIER MICHAEL T·Filed 2012·Granted Dec 31, 2013·56 cites·20 claims
- 0398US7048053B2Zeolite compositions having enhanced compressive strengthHALLIBURTON ENERGY SERV INC·Filed 2004·Granted May 23, 2006·101 cites·7 claims
- 0497US11767466B2Nanocomposite coated proppants and methods of making sameSAUDI ARABIAN OIL CO·Filed 2020·Granted Sep 26, 2023·5 cites·20 claims
- 0597US8183186B2Cement-based particulates and methods of useLUO HONGYU·Filed 2008·Granted May 22, 2012·65 cites·20 claims
- 0696US7866393B2Swellable elastomers and associated methodsHALLIBURTON ENERGY SERV INC·Filed 2010·Granted Jan 11, 2011·27 cites·7 claims
- 0796US7717180B2Swellable elastomers and associated methodsHALLIBURTON ENERGY SERV INC·Filed 2007·Granted May 18, 2010·47 cites·15 claims
- 0895US11891565B1Host-guest lost-circulation materials for sealing lost circulation zones in wellboresSAUDI ARABIAN OIL CO·Filed 2022·Granted Feb 6, 2024·2 cites·20 claims
- 0995US9228940B2Systems, methods, and apparatuses for in situ monitoring of cement fluid compositions and setting processes thereofPELLETIER MICHAEL T·Filed 2012·Granted Jan 5, 2016·13 cites·17 claims
- 1095US7833344B2Ultra low density cement compositions and methods of making sameHALLIBURTON ENERGY SERV INC·Filed 2006·Granted Nov 16, 2010·21 cites·21 claims
- 1195US7699101B2Well system having galvanic time release plugHALLIBURTON ENERGY SERV INC·Filed 2006·Granted Apr 20, 2010·139 cites·40 claims
- 1295US7497258B2Methods of isolating zones in subterranean formations using self-degrading cement compositionsHALLIBURTON ENERGY SERV INC·Filed 2005·Granted Mar 3, 2009·65 cites·20 claims
- 1394US12291785B2Ethoxylated fatty diamine as a corrosion inhibitor for pipelines and storage tanksSAUDI ARABIAN OIL CO·Filed 2022·Granted May 6, 2025·1 cites·12 claims
- 1494US7654326B1Sorel cements and methods of making and using sameHALLIBURTON ENERGY SERV INC·Filed 2008·Granted Feb 2, 2010·29 cites·20 claims
- 1594US7576042B2Salt water stable latex cement slurriesHALLIBURTON ENERGY SERV INC·Filed 2006·Granted Aug 18, 2009·22 cites·21 claims
- 1693US7740070B2Wellbore servicing compositions comprising a density segregation inhibiting composite and methods of making and using sameHALLIBURTON ENERGY SERV INC·Filed 2008·Granted Jun 22, 2010·28 cites·20 claims
- 1792US11643587B2Methods of making cement slurries and cured cement and use thereofSAUDI ARABIAN OIL CO·Filed 2020·Granted May 9, 2023·2 cites·20 claims
- 1892US8627888B2Settable compositions containing metakaolin having reduced portland cement contentSANTRA ASHOK K·Filed 2011·Granted Jan 14, 2014·15 cites·20 claims
- 1992US7637319B2Kickoff plugs comprising a self-degrading cement in subterranean well boresHALLIBURTON ENERGY SERV INC·Filed 2005·Granted Dec 29, 2009·19 cites·14 claims
- 2092US7325611B2Cement compositions for reducing gas or water migration and methods of using the sameHALLIBURTON ENERGY SERV INC·Filed 2006·Granted Feb 5, 2008·22 cites·20 claims
- 2191US8012582B2Sintered proppant made with a raw material containing alkaline earth equivalentHALLIBURTON ENERGY SERV INC·Filed 2008·Granted Sep 6, 2011·22 cites·22 claims
- 2290US11840662B2Development of ultra-high molecular weight (UHMW) branched block copolymer shale inhibitor for water based drilling fluidARAMCO SERVICES CO·Filed 2022·Granted Dec 12, 2023·1 cites·7 claims
- 2390US7687440B2Wellbore sealant compositions containing cationic latexesHALLIBURTON ENERGY SERV INC·Filed 2005·Granted Mar 30, 2010·12 cites·21 claims
- 2489US12428589B2Synthesis and use of grafted graphene in aqueous drilling fluids as low shear rate viscosity enhancerSAUDI ARABIAN OIL CO·Filed 2024·Granted Sep 30, 2025·0 cites·5 claims
- 2589US8623792B2Zero shear viscosifying agentIVERSON BENJAMIN J·Filed 2012·Granted Jan 7, 2014·9 cites·11 claims
- 2689US7530394B2Cement compositions for low temperature applicationsHALLIBURTON ENERGY SERV INC·Filed 2006·Granted May 12, 2009·17 cites·20 claims
- 2788US11739628B2Methods of determining wellbore integritySAUDI ARABIAN OIL CO·Filed 2020·Granted Aug 29, 2023·2 cites·10 claims
- 2888US7789149B2Methods of servicing wellbore with composition comprising ultra low density thermatek® slurriesHALLIBURTON ENERGY SERV INC·Filed 2006·Granted Sep 7, 2010·9 cites·21 claims
- 2987US7438758B2Cement compositions comprising aromatic sulfonated polymers and methods of using the sameHALLIBURTON ENERGY SERV INC·Filed 2007·Granted Oct 21, 2008·8 cites·20 claims
- 3087US7338925B2Zeolite compositions having enhanced compressive strengthHALLIBURTON ENERGY SERV INC·Filed 2006·Granted Mar 4, 2008·7 cites·9 claims
- 3186US7640985B2Methods of directional drilling and forming kickoff plugs using self-degrading cement in subterranean well boresHALLIBURTON ENERGY SERV INC·Filed 2005·Granted Jan 5, 2010·9 cites·17 claims
- 3286US7350574B2Methods of retarding the setting of a cement composition using biodegradable monomersHALLIBURTON ENERGY SERV INC·Filed 2005·Granted Apr 1, 2008·11 cites·61 claims
- 3386US7150321B2Zeolite-containing settable spotting fluidsHALLIBURTON ENERGY SERV INC·Filed 2003·Granted Dec 19, 2006·26 cites·42 claims
- 3485US11148977B2Sorel cement composition and method to cure loss of circulationSAUDI ARABIAN OIL CO·Filed 2019·Granted Oct 19, 2021·2 cites·34 claims
- 3585US7878245B2Cement compositions comprising a high-density particulate elastomer and associated methodsHALLIBURTON ENERGY SERV INC·Filed 2008·Granted Feb 1, 2011·11 cites·15 claims
- 3685US7527098B2Methods of increasing the thickening times of phosphate-based cementitious compositions in high-temperature wellboresHALLIBURTON ENERGY SERV INC·Filed 2004·Granted May 5, 2009·24 cites·15 claims
- 3785US2024343966A1Synthesis and use of grafted graphene in oil based drilling fluids as a low shear rate viscosity enhancerSAUDI ARABIAN OIL CO·Filed 2024·Application pending·0 cites
- 3884US9038722B2Cement compositions containing metphosphate and methods of useHALLIBURTON ENERGY SERVICES INC·Filed 2013·Granted May 26, 2015·4 cites·8 claims
- 3983US12264281B2Repairing wellbore cement structures and related compositionsSAUDI ARABIAN OIL CO·Filed 2023·Granted Apr 1, 2025·0 cites·14 claims
- 4083US11492530B2Unfoldable device for controlling loss circulationSAUDI ARABIAN OIL CO·Filed 2020·Granted Nov 8, 2022·1 cites·11 claims
- 4183US9631132B2Mitigating annular pressure buildup using temperature-activated polymeric particulatesHALLIBURTON ENERGY SERVICES INC·Filed 2013·Granted Apr 25, 2017·6 cites·20 claims
- 4283US7694738B2Methods of using wellbore sealant compositions containing cationic latexesHALLIBURTON ENERGY SERV INC·Filed 2005·Granted Apr 13, 2010·7 cites·23 claims
- 4381US12065608B2Synthesis and use of grafted graphene in oil based drilling fluids as low shear rate viscosity enhancerARAMCO SERVICES CO·Filed 2022·Granted Aug 20, 2024·0 cites·5 claims
- 4481US12054665B2Synthesis and use of grafted graphene in aqueous drilling fluids as low shear rate viscosity enhancerARAMCO SERVICES CO·Filed 2022·Granted Aug 6, 2024·0 cites·8 claims
- 4581US7642223B2Methods of generating a gas in a plugging composition to improve its sealing ability in a downhole permeable zoneHALLIBURTON ENERGY SERV INC·Filed 2004·Granted Jan 5, 2010·59 cites·44 claims
- 4680US7722954B2Gas-generating additives having improved shelf lives for use in cement compositionsHALLIBURTON ENERGY SERV INC·Filed 2008·Granted May 25, 2010·9 cites·18 claims
- 4780US7297664B2Cement-free zeolite and fly ash settable fluids and methods thereforHALLIBURTON ENERGY SERV INC·Filed 2004·Granted Nov 20, 2007·22 cites·57 claims
- 4880US7228905B2Zeolite compositions having enhanced compressive strengthHALLIBURTON ENERGY SERV INC·Filed 2006·Granted Jun 12, 2007·4 cites·26 claims
- 4979US8240384B2Forming structures in a well in-situMILLER TODD B·Filed 2009·Granted Aug 14, 2012·19 cites·30 claims
- 5079US7537656B2Cement compositions comprising biodegradable monomers for retarding the setting thereofHALLIBURTON ENERGY SERV INC·Filed 2005·Granted May 26, 2009·5 cites·47 claims
Showing the top 50 of 127 patent records by PatentIndex Score.
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