(19)
(11) EP 3 867 485 A2

(12)

(88) Date of publication A3:
28.05.2020

(43) Date of publication:
25.08.2021 Bulletin 2021/34

(21) Application number: 19778596.7

(22) Date of filing: 18.09.2019
(51) International Patent Classification (IPC): 
E21B 10/32(2006.01)
(86) International application number:
PCT/GB2019/052624
(87) International publication number:
WO 2020/079393 (23.04.2020 Gazette 2020/17)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 18.10.2018 GB 201816969
29.03.2019 GB 201904424

(71) Applicant: Lee, Paul Bernard
Kelowna, BC V1W 4JS (CA)

(72) Inventors:
  • BEAZER, Dayln
    Calgary, Alberta T3M 1X7 (CA)
  • LEE, Paul Bernard
    Kelowna BC, British Columbia V1W 4JS (CA)

(74) Representative: Byworth, Ian James 
Urquhart-Dykes & Lord LLP The Core Bath Lane Newcastle Helix
Newcastle upon Tyne NE4 5TF
Newcastle upon Tyne NE4 5TF (GB)

   


(54) DRILL STRING WITH A DOWNHOLE REAMER