Inventor · disambiguated record
Robert Nicholas Worrall
Also filed as: WORRALL ROBERT · WORRALL ROBERT N · WORRALL ROBERT NICHOLAS
24 granted patents·2 pending applications·1,716 citations·filing 1986–2013
97Inventor score
Top patents by PatentIndex Score
26 records- 0196US8770271B2Electric submersible pumping system for dewatering gas wellsZEITECS BV·Filed 2013·Granted Jul 8, 2014·29 cites·11 claims
- 0296US5348095AMethod of creating a wellbore in an underground formationSHELL OIL CO·Filed 1993·Granted Sep 20, 1994·537 cites·8 claims
- 0396US4784223AForming an impermeable coating on a borehole wallSHELL OIL CO·Filed 1986·Granted Nov 15, 1988·154 cites·34 claims
- 0494US7640965B2Creating a well abandonment plugSHELL OIL CO·Filed 2006·Granted Jan 5, 2010·53 cites·19 claims
- 0594US4890682AApparatus for vibrating a pipe string in a boreholeSHELL OIL CO·Filed 1989·Granted Jan 2, 1990·139 cites·20 claims
- 0692US7152657B2In-situ casting of well equipmentSHELL OIL CO·Filed 2002·Granted Dec 26, 2006·112 cites·36 claims
- 0790US8925627B2Coiled umbilical tubingTUPPER MICHAEL L·Filed 2011·Granted Jan 6, 2015·32 cites·16 claims
- 0890US8833441B2Cable suspended pumping systemFIELDER LANCE I·Filed 2009·Granted Sep 16, 2014·43 cites·36 claims
- 0988US5168932ADetecting outflow or inflow of fluid in a wellboreSHELL OIL CO·Filed 1991·Granted Dec 8, 1992·75 cites·14 claims
- 1084US4836301AMethod and apparatus for directional drillingSHELL OIL CO·Filed 1987·Granted Jun 6, 1989·77 cites·32 claims
- 1183US6619402B1System for enhancing fluid flow in a wellSHELL OIL CO·Filed 2000·Granted Sep 16, 2003·80 cites·9 claims
- 1282US7527095B2Method of creating a zonal isolation in an underground wellboreSHELL OIL CO·Filed 2004·Granted May 5, 2009·76 cites·35 claims
- 1381US5117926AMethod and system for controlling vibrations in borehole equipmentSHELL OIL CO·Filed 1991·Granted Jun 2, 1992·59 cites·16 claims
- 1479US7207398B2Steerable rotary drill bit assembly with pilot bitSHELL OIL CO·Filed 2002·Granted Apr 24, 2007·59 cites·18 claims
- 1576US7281592B2Injecting a fluid into a borehole ahead of the bitSHELL OIL CO·Filed 2002·Granted Oct 16, 2007·52 cites·19 claims
- 1675US7282663B2Forge welding processSHELL OIL CO·Filed 2003·Granted Oct 16, 2007·21 cites·20 claims
- 1773US8522881B2Thermal hydrate preventerWORRALL ROBERT·Filed 2012·Granted Sep 3, 2013·7 cites·17 claims
- 1873US4880066AAssembly for directional drilling of boreholesSHELL OIL CO·Filed 1988·Granted Nov 14, 1989·51 cites·25 claims
- 1972US8443900B2Electric submersible pumping system and method for dewatering gas wellsFIELDER LANCE I·Filed 2009·Granted May 21, 2013·11 cites·17 claims
- 2072US7810583B2Drilling systems and methodsSHELL OIL CO·Filed 2007·Granted Oct 12, 2010·15 cites·15 claims
- 2154US6380476B1Generating electric power in a wellboreSHELL OIL CO·Filed 2000·Granted Apr 30, 2002·16 cites·7 claims
- 2249US9074436B2Methods for installing sensors in a boreholeRUNIA DOUWE JOHANNES·Filed 2009·Granted Jul 7, 2015·2 cites·16 claims
- 2346US6464001B1Multilateral wellbore systemSHELL OIL CO·Filed 2000·Granted Oct 15, 2002·9 cites·11 claims
- 2445US2009134102A1Separator and process for removing solids from drilling liquidsCOUSINS ANTHONY ROBERT·Filed 2007·Application pending·0 cites
- 2538US2013062061A1Methods and systems for zonal isolation in wellsTAYLOR ROBERT·Filed 2012·Application pending·0 cites
- 2633US5225638AHydrogen-oxygen acoustic logging deviceSHELL OIL CO·Filed 1992·Granted Jul 6, 1993·7 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →