EP 3735507 B1 20240214 - BORING ASSEMBLY AND ASSOCIATED BORING METHOD
Title (en)
BORING ASSEMBLY AND ASSOCIATED BORING METHOD
Title (de)
BOHRANORDNUNG UND ZUGEHÖRIGES BOHRVERFAHREN
Title (fr)
ENSEMBLE DE FORAGE ET PROCÉDÉ DE FORAGE ASSOCIÉ
Publication
Application
Priority
- FR 1850103 A 20180105
- EP 2019050139 W 20190104
Abstract (en)
[origin: WO2019134956A1] This boring assembly (10) extends along a main axis (A – A') and comprises: • - a boring head (18) comprising: • + at least one first nozzle (20); • + at least one second nozzle (22), the or each second nozzle being different from the or each first nozzle; • - a first delivery device (26) configured to deliver a jet of abrasive-free water at a pressure comprised between 2000 bar and 4000 bar to the at least one first nozzle; • - a second delivery device (28) configured to deliver a jet containing at least one abrasive material at a pressure comprised between 2000 bar and 6000 bar to the at least one second nozzle.
IPC 8 full level
E21B 7/18 (2006.01); B26F 3/00 (2006.01); E04G 23/08 (2006.01); E21B 10/60 (2006.01)
CPC (source: EP US)
E21B 7/16 (2013.01 - US); E21B 7/18 (2013.01 - EP US); E21B 7/24 (2013.01 - US); E21B 10/60 (2013.01 - EP); E21B 21/065 (2013.01 - US)
Citation (examination)
US 2868509 A 19590113 - WILLIAMS PHILIP S
Designated contracting state (EPC)
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
DOCDB simple family (publication)
WO 2019134956 A1 20190711; EP 3735507 A1 20201111; EP 3735507 B1 20240214; FR 3076568 A1 20190712; FR 3076568 B1 20201127; JP 2021510187 A 20210415; JP 7266606 B2 20230428; US 11384602 B2 20220712; US 2020347679 A1 20201105
DOCDB simple family (application)
EP 2019050139 W 20190104; EP 19700057 A 20190104; FR 1850103 A 20180105; JP 2020537179 A 20190104; US 201916960038 A 20190104