EP 3102772 A4 20171115 - DRILL BIT FOR HORIZONTAL DIRECTIONAL DRILLING
Title (en)
DRILL BIT FOR HORIZONTAL DIRECTIONAL DRILLING
Title (de)
BOHRKRONE FÜR HORIZONTALES RICHTBOHREN
Title (fr)
TRÉPAN DE FORAGE POUR FORAGE DIRECTIONNEL HORIZONTAL
Publication
Application
Priority
- US 201461937221 P 20140207
- US 2015014880 W 20150206
Abstract (en)
[origin: US2015226007A1] A bit body for a drill bit for horizontal directional drilling includes a pair of legs and a small wedge member disposed between the pair of legs. A roller cone is rotatably mounted to each bearing shaft extending from a respective leg. The roller cones support full coverage cutting structures. A center jet nozzle is configured to direct drilling fluid between the pair of roller cones. A stabilizer member maintains an upright drilling position of the drill bit within the borehole.
IPC 8 full level
E21B 10/08 (2006.01); E21B 10/18 (2006.01); E21B 10/62 (2006.01)
CPC (source: EP US)
E21B 7/065 (2013.01 - EP US); E21B 10/18 (2013.01 - EP US); E21B 10/50 (2013.01 - EP US)
Citation (search report)
- [X] US 1656471 A 19280117 - CHILDS WILLIAM L, et al
- [A] US 2873092 A 19590210 - DWYER ROY P
- [A] US 1263802 A 19180423 - REED CLARENCE EDW [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)
US 2015226007 A1 20150813; AU 2015213772 A1 20160728; EP 3102772 A1 20161214; EP 3102772 A4 20171115; WO 2015120311 A1 20150813
DOCDB simple family (application)
US 201514616361 A 20150206; AU 2015213772 A 20150206; EP 15745800 A 20150206; US 2015014880 W 20150206