EP 2766562 A1 20140820 - WELLBORE CASING CUTTING TOOL
Title (en)
WELLBORE CASING CUTTING TOOL
Title (de)
BOHRFUTTER-SCHNEIDEWERKZEUG
Title (fr)
OUTIL DE COUPE DE TUBAGE DE PUITS DE FORAGE
Publication
Application
Priority
- US 201161542991 P 20111004
- US 2012057734 W 20120928
Abstract (en)
[origin: WO2013052360A1] A wellbore casing cutting tool, having multiple blades which rotate outwardly by a fluid operated mechanism, has multiple cutters on each blade. The cutters are preferably positioned on the blades such that the lowermost cutting edges of multiple cutters all bear on the surface of the casing being cut. The cutters are preferably made with a metal base, covered with hardened cutting material such as tungsten carbide or hardened cutting buttons. The metal wears away as cutting progresses, continually exposing fresh cutting surfaces. The multiple cutters permit cutting of long windows in casing walls, and the structure of the cutters results in relatively short metal cuttings, rather than long metal cuttings which can ball up downhole.
IPC 8 full level
E21B 29/00 (2006.01)
CPC (source: EP US)
E21B 29/00 (2013.01 - US); E21B 29/005 (2013.01 - EP US)
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
DOCDB simple family (publication)
WO 2013052360 A1 20130411; CA 2886803 A1 20130411; EP 2766562 A1 20140820; EP 2766562 A4 20151118; US 2014332200 A1 20141113
DOCDB simple family (application)
US 2012057734 W 20120928; CA 2886803 A 20120928; EP 12837943 A 20120928; US 201214348962 A 20120928