Global Patent Index - EP 0825326 A3

EP 0825326 A3 2001-01-24 - Method and apparatus for horizontal drilling and for handling drill rods

Title (en)

Method and apparatus for horizontal drilling and for handling drill rods

Title (de)

Verfahren und Vorrichtung zum Horizontalbohren und zum Handhaben von Bohrstangen

Title (fr)

Procédé et dispositif pour le forage horizontal et pour la manipulation de tiges de forage

Publication

EP 0825326 A3 (DE)

Application

EP 97111051 A

Priority

DE 19633934 A

Abstract (en)

[origin: EP0825326A2] Drilling long horizontal boreholes below ground produces long horizontal bores (1) in the ground, from an initial subsurface point of desired depth. Here the drive (9) turns a string of drilling rods, making axial (3), horizontal progress in a given direction. The vertical shaft is of constant cross section. Rods (6) to be joined to, or removed from the drill string (7) are lowered to a horizontal position corresponding with the drilling axis, connection or detachment taking place in the shaft, on this axis. Also claimed is the corresponding equipment to drive the horizontal bore. This includes a derrick and rods shorter than its open internal cross section.

IPC 1-7 (main, further and additional classification)

E21B 19/15; E21B 7/04; E21B 15/00; E21B 19/20

IPC 8 full level (invention and additional information)

E21B 7/04 (2006.01); E21B 15/00 (2006.01); E21B 19/15 (2006.01); E21B 19/20 (2006.01)

CPC (invention and additional information)

E21B 7/046 (2013.01); E21B 15/00 (2013.01); E21B 19/155 (2013.01); E21B 19/20 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0825326 A2 19980225; EP 0825326 A3 20010124; EP 0825326 B1 20040922; AT 277270 T 20041015; DE 19633934 A1 19980226; DE 19633934 C2 20020926

INPADOC legal status


2012-05-10 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

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