|
FR2976963A1
|
|
Decoupling device for connecting a drilling tool at the end of a drilling column and a drilling system comprising such a decoupling device
|
|
BE1020012A3
|
|
Bi-center rotary trepan and method for extending preexistant well.
|
|
WO2010047810A1
|
|
Combination coring bit and drill bit using fixed cutter pdc cutters
|
|
WO2010047802A1
|
|
Two piece mold used in manufacture of pdc drill bits and method of using same
|
|
CA2729587A1
|
|
Drill bit having functional articulation to drill boreholes in earth formations in all directions
|
|
US2010122851A1
|
|
Ultra-hard drilling stabilizer
|
|
US2010012391A1
|
|
Method and apparatus for selectively leaching portions of PDC cutters used in drill bits
|
|
US2010012390A1
|
|
Method and apparatus for selectively leaching portions of PDC cutters already mounted in drill bits
|
|
US2010012388A1
|
|
Optimized central PDC cutter and method
|
|
US2009321137A1
|
|
Drill bit having the ability to drill vertically and laterally
|
