EP 1371811 A2 20031217 - Roller cone drill bit, method of designing the same and rotary drilling system
Title (en)
Roller cone drill bit, method of designing the same and rotary drilling system
Title (de)
Rollenbohrmeissel, zugehöriges Entwurfsverfahren und Drehbohrsystem
Title (fr)
Trépan à cônes, procédé pour sa conception et système de forage rotatif
Publication
Application
Priority
- EP 99945376 A 19990831
- US 9844298 P 19980831
Abstract (en)
A method of designing a roller cone bit is disclosed. The method comprises the steps of: calculating the trajectory of at least one tooth on each cone through formation material at the cutting face; and jointly optimising both the orientations of said teeth and the width of uncut rings on said cutting face, in dependence on said trajectory. <IMAGE>A method of designing a roller cone bit is disclosed. The method comprises the steps of: calculating the trajectory of at least one tooth on each cone through formation material at the cutting face; and jointly optimising both the orientations of said teeth and the width of uncut rings on said cutting face, in dependence on said trajectory. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 10/08 (2006.01); E21B 10/16 (2006.01); E21B 41/00 (2006.01)
CPC (source: EP)
E21B 10/08 (2013.01); E21B 10/16 (2013.01)
Citation (applicant)
US 5372210 A 19941213 - HARRELL PATRICIA N [US]
Designated contracting state (EPC)
GB IT
DOCDB simple family (publication)
WO 0012860 A2 20000309; WO 0012860 A3 20000608; WO 0012860 A9 20001123; AU 5798499 A 20000321; EP 1117894 A2 20010725; EP 1117894 A4 20020814; EP 1117894 B1 20031203; EP 1117894 B2 20100303; EP 1371811 A2 20031217; EP 1371811 A3 20040102; EP 1371811 B1 20110330; EP 1498572 A2 20050119; EP 1498572 A3 20060412; EP 1500781 A2 20050126; EP 1500781 A3 20060412; EP 1500782 A2 20050126; EP 1500782 A3 20060412; EP 1500783 A2 20050126; EP 1500783 A3 20060412; ID 28893 A 20010712; MX PA01002208 A 20030327
DOCDB simple family (application)
US 9919992 W 19990831; AU 5798499 A 19990831; EP 03021139 A 19990831; EP 04025232 A 19990831; EP 04025560 A 19990831; EP 04025561 A 19990831; EP 04025562 A 19990831; EP 99945376 A 19990831; ID 20010732 A 19990831; MX PA01002208 A 19990831