Title (en)

Device and method for drilling shafts in a ground consisting of rock, clay and/or related materials

Title (de)

Vorrichtung und Verfahren zum Bohren von Schächten in einem Boden aus Stein, Lehm bzw. entsprechenden Materialien

Title (fr)

Dispositif et procédé de forage de puits dans un sol constitué de roche, d'argile et/ou de matériaux connexes

Publication

EP 2615239 A1 20130717 (EN)

Application

EP 13150026 A 20130102

Priority

BE 201200003 A 20120102

Abstract (en)

The invention relates to a device and method for drilling shafts in a ground consisting of rock, clay and/or related materials. The device (1) comprises a borehole casing (4) and means for arranging the borehole casing (4) in the ground (3); a drilling means (10)which can be lowered into the borehole casing (4) by means of a flexible suspension; wherein the drilling means (10) comprises a hollow drill string (5) provided with a drill head (7) with cutting tools (8) and means (13) for setting the drill string (5) into rotation, and wherein the drilling means (10) is further provided with securing means with which the drilling means (10) can be secured in the borehole casing, and with discharge means for dislodged ground material connected to the hollow drill string. The invention also relates to a lifting platform provided with the device. Using the invented device drilling can take place with higher efficiency than with the known device and method.

IPC 8 full level

E21B 4/18 (2006.01); E02D 7/26 (2006.01); E21B 7/20 (2006.01); E21B 21/00 (2006.01)

CPC (source: EP US)

E21B 4/18 (2013.01 - EP); E21B 7/208 (2013.01 - EP); E21B 21/001 (2013.01 - EP US)

Citation (search report)

• [XY] DE 10336315 A1 20050303 - HROSS HELMUT [DE]
• [I] GB 2002047 A 19790214 - LEFFER STAHL & APP
• [I] JP 2002276273 A 20020925 - KENCHO CO LTD, et al
• [Y] WO 2010123375 A1 20101028 - AKER WELL SERVICE AS [NO], et al
• [Y] GB 938191 A 19631002 - BADE & CO GMBH
• [Y] WO 2010106124 A2 20100923 - GEOSEA NV [BE], et al
• [Y] US 3001592 A 19610926 - LUCAS JOSEPH E
• [Y] US 3860122 A 19750114 - CERNOSEK LOUIS C
• [A] GB 1506388 A 19780405 - LILLEY WADDINGTON LTD
• [A] GB 2382092 A 20030521 - CIE DU SOL [FR], et al
• [A] WO 2007050770 A1 20070503 - SHELL OIL CO [US], et al

Citation (third parties)

Third party : anonymous

• DE 10336315 A1 20050303 - HROSS HELMUT [DE]
• DE 3741717 A1 19890629 - WIRTH CO KG MASCH BOHR [DE]
• DE 4308856 C1 19940526 - LEFFER STAHL & APP [DE]
• JP H0941859 A 19970210 - NIPPON SHARYO SEIZO KK

Third party :

• DE 3741717 A1 19890629 - WIRTH CO KG MASCH BOHR [DE]
• GB 2002047 A 19790214 - LEFFER STAHL & APP

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

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2615239 A1 20130717; EP 2615239 B1 20191030; BE 1020365 A4 20130806; DK 2615239 T3 20200210; PL 2615239 T3 20200629

DOCDB simple family (application)

EP 13150026 A 20130102; BE 201200003 A 20120102; DK 13150026 T 20130102; PL 13150026 T 20130102