DP

Daniel George Purkis

PL Petrowell Limited: 20 patents #1 of 27Top 4%
WH Weatherford Technology Holdings: 18 patents #18 of 753Top 3%
WL Well-Sense Technology Limited: 6 patents #1 of 1Top 100%
WL Weatherford U.K. Limited: 5 patents #2 of 47Top 5%
HS Halliburton Energy Services: 4 patents #1,391 of 4,711Top 30%
WE Welldynamics: 4 patents #4 of 19Top 25%
MO Marathon Oil: 1 patents #72 of 204Top 40%
📍 Peterhead, GB: #1 of 20 inventorsTop 5%
Overall (All Time): #40,231 of 4,157,543Top 1%
59
Patents All Time

Issued Patents All Time

Showing 26–50 of 59 patents

Patent #TitleCo-InventorsDate
10087725 Telemetry operated tools for cementing a liner string Richard L. Giroux, Richard Dalzell, Jason DUTHIE, Ian Jaffrey 2018-10-02
10077633 Downhole apparatus and method Oliver Webster, Damien Patton, Matthew Manning, Steve Corbett, Ian Duncan +1 more 2018-09-18
10053958 Downhole apparatus and method Oliver Webster, Damien Patton, Matthew Manning, Steve Corbett, Ian Duncan +1 more 2018-08-21
10041335 Switching device for, and a method of switching, a downhole tool 2018-08-07
10018015 Downhole apparatus and method Oliver Webster, Damien Patton, Matthew Manning, Steve Corbett, Ian Duncan +1 more 2018-07-10
9945211 Leak-off assembly for gravel pack system Stephen McNamee, John S. Sladic, Stephen Reid, Andrew McGeoch, Matthew Manning 2018-04-17
9739127 Method and system for operating a downhole tool, for fracturing a formation and/or for completing a wellbore Stephen Reid 2017-08-22
9631458 Switching device for, and a method of switching, a downhole tool 2017-04-25
9488046 Apparatus and method for downhole communication 2016-11-08
9416643 Selective fracturing system Richard Atkinson 2016-08-16
9359842 Downhole actuating apparatus Colin Smith 2016-06-07
9359890 Method of and apparatus for completing a well 2016-06-07
9194197 Mechanical counter Colin Smith 2015-11-24
9194227 Systems, assemblies and processes for controlling tools in a wellbore Philip M. Snider 2015-11-24
9115573 Remote actuation of a downhole tool Iain MacLeod 2015-08-25
9103197 Switching device for, and a method of switching, a downhole tool 2015-08-11
9085954 Method of and apparatus for completing a well 2015-07-21
8973666 Running adapter 2015-03-10
8950503 Control system 2015-02-10
8839872 Tree plug 2014-09-23
8833469 Method of and apparatus for completing a well 2014-09-16
8701776 Downhole actuating apparatus Colin Smith 2014-04-22
8490691 Plug 2013-07-23
8191570 Bi-directional flapper valve 2012-06-05
7975767 Apparatus for controlling a downhole device 2011-07-12