EP 0900319 A1 19990310 - PROCESS AND DEVICE FOR SEPARATION OF PIPES OR COLUMNS FIXED IN THE GROUND
Title (en)
PROCESS AND DEVICE FOR SEPARATION OF PIPES OR COLUMNS FIXED IN THE GROUND
Title (de)
VERFAHREN UND VORRICHTUNG ZUM ABTRENNEN VON IM BODEN VERANKERTEN ROHREN ODER PFEILERN
Title (fr)
PROCECE ET DISPOSITIF POUR DECOUPER DES TUBES OU DES PILIERS ANCRES DANS LE SOL
Publication
Application
Priority
- DE 9701017 W 19970521
- DE 19620756 A 19960523
Abstract (en)
[origin: DE19620756A1] To separate relatively long upright pipes (13) which have a relatively large diameter, the lower end thereof being fixed in the ground, in particular of support legs (3) of an off-shore oil bore or conveying platform (100), a cutting unit is lowered down into the pipe (13) to a separation point. The cutting unit (40) acts gradually from the inside across the periphery to the internal periphery of the pipe (13) and cuts through the pipe (13) by removing metal. A bore tool head (60) is mounted upstream of the cutting unit (40), viewed from the lowering position, and is used to bore out material in the pipe such as ocean bed or concrete.
IPC 1-7
IPC 8 full level
E21B 29/00 (2006.01); E21B 29/12 (2006.01)
CPC (source: EP US)
E21B 29/005 (2013.01 - EP US); E21B 29/12 (2013.01 - EP US)
Citation (search report)
See references of WO 9744566A1
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
DE 19620756 A1 19971127; DE 59703394 D1 20010523; EP 0900319 A1 19990310; EP 0900319 B1 20010418; NO 312641 B1 20020610; NO 985355 D0 19981117; NO 985355 L 19981117; US 6183165 B1 20010206; WO 9744566 A1 19971127
DOCDB simple family (application)
DE 19620756 A 19960523; DE 59703394 T 19970521; DE 9701017 W 19970521; EP 97925854 A 19970521; NO 985355 A 19981117; US 19406998 A 19981119