EP 1491716 A3 20050427 - Method for drilling a borehole and wet boring tool
Title (en)
Method for drilling a borehole and wet boring tool
Title (de)
Verfahren zum Niederbringen einer Bohrung im Boden und Nassbohrwerkzeug
Title (fr)
Méthode de forage et outil de forage humide
Publication
Application
Priority
DE 10328609 A 20030625
Abstract (en)
[origin: EP1491716A2] Wet-drilling tool (10) comprises a jacket (15) having a drill bit (8) on its under side and a cover (11) on its upper side provided with at least one passage device for the passage of a liquid, a collecting container (6) for collecting drillings, and a pump device. The passage device has a valve element allowing fluid flow in the direction of the interior (3) of the jacket through the passage device and blocking fluid flow in the opposite direction. The passage device has a tubular dome (20) with at least one lateral inlet opening (21) above the collecting container. The dome is arranged coaxially to the jacket on the cover and has on its upper side a connecting rod connection (28) for attaching a boring rod. Independent claims are also included for: (1) Drilling system comprising the above drilling tool; and (2) Process for creating a hole in the ground using the above wet-drilling tool.
IPC 1-7
IPC 8 full level
E21B 7/00 (2006.01); E21B 10/00 (2006.01); E21B 10/06 (2006.01); E21B 21/00 (2006.01)
CPC (source: EP KR US)
E21B 21/00 (2013.01 - EP KR US); E21B 21/002 (2013.01 - KR)
Citation (search report)
- [X] US 3430448 A 19690304 - GAUNTT GROVER C JR, et al
- [X] US 3185226 A 19650525 - JAMES ROBBINS RICHARD
- [A] DE 19859666 A1 20000316 - BILFINGER BERGER BAU [DE]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1491716 A2 20041229; EP 1491716 A3 20050427; EP 1491716 B1 20060719; AT E333566 T1 20060815; CN 1311141 C 20070418; CN 1576511 A 20050209; DE 10328609 B3 20041202; DE 502004000977 D1 20060831; ES 2268541 T3 20070316; HK 1074068 A1 20051028; JP 2005016300 A 20050120; JP 3953475 B2 20070808; KR 100636594 B1 20061020; KR 20050001327 A 20050106; RU 2004117327 A 20051120; RU 2282012 C2 20060820; SG 135036 A1 20070928; TW 200506171 A 20050216; TW I235783 B 20050711; US 2005023039 A1 20050203; US 7234538 B2 20070626
DOCDB simple family (application)
EP 04012798 A 20040528; AT 04012798 T 20040528; CN 200410062897 A 20040625; DE 10328609 A 20030625; DE 502004000977 T 20040528; ES 04012798 T 20040528; HK 05106579 A 20050801; JP 2004186273 A 20040624; KR 20040043911 A 20040615; RU 2004117327 A 20040609; SG 2004041323 A 20040611; TW 93115200 A 20040528; US 87361904 A 20040623