EP 0962624 A1 19991208 - Device for making or regenerating water wells
Title (en)
Device for making or regenerating water wells
Title (de)
Vorrichtung zur Herstellung und Regeneration von Brunnen
Title (fr)
Dispositif pour fabrication et régénération des puits d'eau
Publication
Application
Priority
EP 98830348 A 19980604
Abstract (en)
A device for making or regenerating a water well, said well comprising a casing (7) installed inside a borehole in the ground. The device comprises a operating head (2) with angularly equispaced radial seats (3) in which respective punch tools for forming holes, windows or shaped cuts in the wall of the casing are slidingly housable. The head is operated from the mouth of the well to a position at a preestablished depth inside the casing so that the radial seats are orthogonal to the wall of the casing. Operating means (5) are integral with the head to axially move the tools inside the respective radial seats to and from the wall of the casing (7). <IMAGE>
IPC 1-7
E21B 43/112; E21B 33/138; E21B 33/14; E21B 37/00; E21B 34/06
IPC 8 full level
E21B 33/138 (2006.01); E21B 33/14 (2006.01); E21B 34/06 (2006.01); E21B 37/00 (2006.01); E21B 43/112 (2006.01)
CPC (source: EP)
E21B 33/138 (2013.01); E21B 33/14 (2013.01); E21B 34/06 (2013.01); E21B 37/00 (2013.01); E21B 43/112 (2013.01)
Citation (search report)
- [X] US 1785419 A 19301216 - ROSCOE MOSS
- [XY] US 2638801 A 19530519 - KLAASEN RALPH J, et al
- [Y] US 2381929 A 19450814 - MARCEL SCHLUMBERGER
- [XY] DE 277802 C
- [X] US 1789995 A 19310127 - BRUCE BARKIS
- [A] US 4640362 A 19870203 - SCHELLSTEDE HERMAN J [US]
- [A] US 4158388 A 19790619 - OWEN HARROLD D, et al
Designated contracting state (EPC)
ES FR GR IT PT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 98830348 A 19980604