Assignee
EXPRO NORTH SEA LTD
US·86 granted patents·19 pending applications·1,435 citations·filing 1992–2025
Top patents by PatentIndex Score
105 records- 0192US6053252ALightweight intervention systemEXPRO NORTH SEA LTD·Filed 1996·Granted Apr 25, 2000·158 cites·14 claims
- 0291US6935189B2Multiphase flow meter using multiple pressure differentialsEXPRO NORTH SEA LTD·Filed 2001·Granted Aug 30, 2005·62 cites·14 claims
- 0389US5529126AValve control apparatusEXPRO NORTH SEA LTD·Filed 1994·Granted Jun 25, 1996·118 cites·17 claims
- 0487US6061000ADownhole data transmissionEXPRO NORTH SEA LTD·Filed 1995·Granted May 9, 2000·118 cites·21 claims
- 0586US12018970B2Well bore fluid sensor, system, and methodEXPRO NORTH SEA LTD·Filed 2022·Granted Jun 25, 2024·1 cites·20 claims
- 0686US8028752B2Plug setting and retrieving apparatusEXPRO NORTH SEA LTD·Filed 2005·Granted Oct 4, 2011·34 cites·17 claims
- 0785US11753899B2Control system for a well control deviceEXPRO NORTH SEA LTD·Filed 2022·Granted Sep 12, 2023·2 cites·13 claims
- 0882US10066458B2Intervention system and apparatusEXPRO NORTH SEA LTD·Filed 2014·Granted Sep 4, 2018·10 cites·23 claims
- 0982US7331394B2Autonomous well intervention systemEXPRO NORTH SEA LTD·Filed 2004·Granted Feb 19, 2008·64 cites·45 claims
- 1081US10246970B2Landing stringEXPRO NORTH SEA LTD·Filed 2015·Granted Apr 2, 2019·5 cites·21 claims
- 1181US6865139B2Subsea navigation and surveyEXPRO NORTH SEA LTD·Filed 2001·Granted Mar 8, 2005·16 cites·18 claims
- 1279US11396784B2Subsea test tree assemblyEXPRO NORTH SEA LTD·Filed 2019·Granted Jul 26, 2022·3 cites·29 claims
- 1378US6109352ASimplified Xmas tree using sub-sea test treeEXPRO NORTH SEA LTD·Filed 1996·Granted Aug 29, 2000·80 cites·7 claims
- 1477US5884706AHorizontal subsea tree pressure compensated plugEXPRO NORTH SEA LTD·Filed 1995·Granted Mar 23, 1999·74 cites·12 claims
- 1576US10450834B2Ball valveEXPRO NORTH SEA LTD·Filed 2015·Granted Oct 22, 2019·3 cites·15 claims
- 1676US6835291B2Anode monitoring and subsea pipeline power transmissionEXPRO NORTH SEA LTD·Filed 2003·Granted Dec 28, 2004·10 cites·9 claims
- 1775US11072988B2Fluid control systemEXPRO NORTH SEA LTD·Filed 2017·Granted Jul 27, 2021·2 cites·20 claims
- 1875US6708946B1Ball valveEXPRO NORTH SEA LTD·Filed 1999·Granted Mar 23, 2004·70 cites·12 claims
- 1975US6394837B1Electrical connector systemEXPRO NORTH SEA LTD·Filed 1999·Granted May 28, 2002·37 cites·16 claims
- 2075US6227301B1Christmas treeEXPRO NORTH SEA LTD·Filed 1997·Granted May 8, 2001·70 cites·17 claims
- 2174US11248440B2Valve seat and valveEXPRO NORTH SEA LTD·Filed 2018·Granted Feb 15, 2022·2 cites·19 claims
- 2273US5857523AWell completion lubricator valveEXPRO NORTH SEA LTD·Filed 1995·Granted Jan 12, 1999·65 cites·6 claims
- 2371US9951608B2Downhole structure sectionsEXPRO NORTH SEA LTD·Filed 2012·Granted Apr 24, 2018·4 cites·14 claims
- 2470US10570708B2Landing string measurement system and method including a power assembly providing power to a data-storageEXPRO NORTH SEA LTD·Filed 2016·Granted Feb 25, 2020·2 cites·23 claims
- 2569US12297626B1Triple purpose solar panel condensation systemEXPRO NORTH SEA LTD·Filed 2024·Granted May 13, 2025·0 cites·20 claims
- 2669US11668150B2Valve assembly for controlling fluid communication along a well tubularEXPRO NORTH SEA LTD·Filed 2020·Granted Jun 6, 2023·1 cites·20 claims
- 2768US10392935B2Monitoring systems and methodsEXPRO NORTH SEA LTD·Filed 2016·Granted Aug 27, 2019·2 cites·7 claims
- 2868US9957772B2Valve assemblyEXPRO NORTH SEA LTD·Filed 2014·Granted May 1, 2018·4 cites·18 claims
- 2967US6170578B1Monobore riser bore selectorEXPRO NORTH SEA LTD·Filed 1997·Granted Jan 9, 2001·52 cites·12 claims
- 3066US11352875B2Combined power source for long term operation of downhole gaugesEXPRO NORTH SEA LTD·Filed 2019·Granted Jun 7, 2022·1 cites·16 claims
- 3165US11293266B2Autonomous systems and methods for wellbore interventionEXPRO NORTH SEA LTD·Filed 2018·Granted Apr 5, 2022·1 cites·19 claims
- 3264US10697296B2Monitoring systems and methodsEXPRO NORTH SEA LTD·Filed 2019·Granted Jun 30, 2020·1 cites·20 claims
- 3364US7748685B2Winch assemblyEXPRO NORTH SEA LTD·Filed 2005·Granted Jul 6, 2010·7 cites·30 claims
- 3463US10704378B2Well monitoringEXPRO NORTH SEA LTD·Filed 2016·Granted Jul 7, 2020·1 cites·17 claims
- 3563US7554458B2Downhole communicationEXPRO NORTH SEA LTD·Filed 2005·Granted Jun 30, 2009·11 cites·38 claims
- 3662US6015013ALightweight intervention system for use with horizontal tree with internal ball valveEXPRO NORTH SEA LTD·Filed 1996·Granted Jan 18, 2000·44 cites·8 claims
- 3761US6314821B1Annular flow monitoring apparatusEXPRO NORTH SEA LTD·Filed 1997·Granted Nov 13, 2001·36 cites·8 claims
- 3861US2025382849A1Tubular string shroud systemEXPRO NORTH SEA LTD·Filed 2025·Application pending·0 cites
- 3960US11994024B2Downhole taggant injector apparatus and systemEXPRO NORTH SEA LTD·Filed 2019·Granted May 28, 2024·1 cites·19 claims
- 4060US11828170B2Method for communicating electrical signals in a wellEXPRO NORTH SEA LTD·Filed 2021·Granted Nov 28, 2023·0 cites·6 claims
- 4160US7102532B2Subsea communicationEXPRO NORTH SEA LTD·Filed 2001·Granted Sep 5, 2006·8 cites·22 claims
- 4259US12018562B2Wellbore communication methods and systemsEXPRO NORTH SEA LTD·Filed 2020·Granted Jun 25, 2024·1 cites·18 claims
- 4358US5873415ACompletion sub-sea test treeEXPRO NORTH SEA LTD·Filed 1996·Granted Feb 23, 1999·37 cites·11 claims
- 4457US6109353ASingle bore riser systemEXPRO NORTH SEA LTD·Filed 1996·Granted Aug 29, 2000·37 cites·9 claims
- 4556US2023311027A1System for removing solids from a separator and method thereforEXPRO NORTH SEA LTD·Filed 2021·Application pending·0 cites
- 4655US2026036014A1Retrievable packer element - anti extrusion barrierEXPRO NORTH SEA LTD·Filed 2025·Application pending·0 cites
- 4754US11933167B2Deployable electrical contact deviceEXPRO NORTH SEA LTD·Filed 2018·Granted Mar 19, 2024·0 cites·9 claims
- 4854US7806180B2Signalling systems and methods for communicating with a downhole location in a well installationEXPRO NORTH SEA LTD·Filed 2006·Granted Oct 5, 2010·3 cites·32 claims
- 4954US7460438B2Downhole data communicationEXPRO NORTH SEA LTD·Filed 2004·Granted Dec 2, 2008·15 cites·25 claims
- 5054US2026071514A1Downhole tubing assembly for downhole sensingEXPRO NORTH SEA LTD·Filed 2024·Application pending·0 cites
Showing the top 50 of 105 patent records by PatentIndex Score.
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