EP 1226329 A2 20020731 - DRILL STRING MEMBER WITH BEARINGS
Title (en)
DRILL STRING MEMBER WITH BEARINGS
Title (de)
BOHRSTRANGELEMENT MIT LAGERN
Title (fr)
COLONNE DE FORAGE A ROULEMENTS
Publication
Application
Priority
- GB 0003829 W 20001006
- GB 9924114 A 19991013
Abstract (en)
[origin: WO0127434A2] A drill string member comprising a body, and bearing races around the circumference of the member. In certain embodiment, the presence of spherical bearings on the surface of the member reduces radial torque and vertical drag to enable easier operation of the drill string. Advantages of one embodiment includes a reduction in the wear or breakages of the components used in drilling.
[origin: WO0127434A2] A drill string member comprising a body (1), and bearing races (5) around the circumference of the member. In certain embodiment, the presence of spherical bearings (25) on the surface of the member reduces radial torque and vertical drag to enable easier operation of the drill string. Advantages of one embodiment includes a reduction in the wear or breakages of the components used in drilling.
IPC 1-7
IPC 8 full level
E21B 17/10 (2006.01)
CPC (source: EP)
E21B 17/1057 (2013.01); E21B 17/1064 (2013.01)
Citation (search report)
See references of WO 0127434A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0127434 A2 20010419; WO 0127434 A3 20011011; AT E256817 T1 20040115; AU 7544900 A 20010423; CA 2385443 A1 20010419; DE 60007349 D1 20040129; EP 1226329 A2 20020731; EP 1226329 B1 20031217; GB 9924114 D0 19991215; NO 20021630 D0 20020405; NO 20021630 L 20020405
DOCDB simple family (application)
GB 0003829 W 20001006; AT 00964521 T 20001006; AU 7544900 A 20001006; CA 2385443 A 20001006; DE 60007349 T 20001006; EP 00964521 A 20001006; GB 9924114 A 19991013; NO 20021630 A 20020405