(19)
(11) EP 4 816 660 A1

(12)

(43) Date of publication:
07.10.2026 Bulletin 2026/41

(21) Application number: 23825266.2

(22) Date of filing: 30.11.2023
(51) International Patent Classification (IPC): 
E21B 7/15(2006.01)
E21C 37/18(2006.01)
(52) Cooperative Patent Classification (CPC):
E21B 7/15; E21C 37/18
(86) International application number:
PCT/SE2023/051207
(87) International publication number:
WO 2025/116797 (05.06.2025 Gazette 2025/23)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(71) Applicant: Epiroc Rock Drills Aktiebolag
701 91 Örebro (SE)

(72) Inventors:
  • JAKOBSSON, Erik
    701 91 Örebro (SE)
  • MERKEL, Harald Franz Arno
    701 91 Örebro (SE)
  • SKYTTEDAL, André
    701 91 Örebro (SE)

(74) Representative: Epiroc Rock Drills AB 
Patents
701 91 Örebro
701 91 Örebro (SE)

   


(54) DRILLING METHOD AND EQUIPMENT