(19)
(11) EP 4 004 332 A1

(12)

(43) Date of publication:
01.06.2022 Bulletin 2022/22

(21) Application number: 20742210.6

(22) Date of filing: 13.07.2020
(51) International Patent Classification (IPC): 
E21B 28/00(2006.01)
E21B 43/00(2006.01)
 E21B 43/25(2006.01)
(52) Cooperative Patent Classification (CPC):
E21B 28/00; E21B 43/003; E21B 43/25
(86) International application number:
PCT/EP2020/069793
(87) International publication number:
WO 2021/013613 (28.01.2021 Gazette 2021/04)
(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: 23.07.2019 RU 2019123136

(71) Applicants:
  • Kulbuzhev, Timur Sultanovich
    500085 Brasov (RO)
  • Kulbuzhev, Bashir Sultanovich
    Moscovski 108811 (RU)

(72) Inventors:
  • Kulbuzhev, Timur Sultanovich
    500085 Brasov (RO)
  • Kulbuzhev, Bashir Sultanovich
    Moscovski 108811 (RU)

(74) Representative: Lohmanns Lohmanns & Partner mbB 
Benrather Schlossallee 49-53
40597 Düsseldorf
40597 Düsseldorf (DE)

   


(54) EMITTER FOR ACOUSTIC TREATMENT OF THE WELL BOTTOM ZONES OF OIL WELLS