SE0001657D0 - The drill bit attachment - Google Patents

The drill bit attachment

Info

Publication number
SE0001657D0
SE0001657D0 SE0001657A SE0001657A SE0001657D0 SE 0001657 D0 SE0001657 D0 SE 0001657D0 SE 0001657 A SE0001657 A SE 0001657A SE 0001657 A SE0001657 A SE 0001657A SE 0001657 D0 SE0001657 D0 SE 0001657D0
Authority
SE
Sweden
Prior art keywords
drill bit
machine
unsymmetrical
drills
drilling
Prior art date
Application number
SE0001657A
Other languages
Swedish (sv)
Other versions
SE0001657L (en
SE515730C2 (en
Inventor
Fredrik Egerstroem
Original Assignee
G Drill Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by G Drill Ab filed Critical G Drill Ab
Priority to SE0001657A priority Critical patent/SE515730C2/en
Publication of SE0001657D0 publication Critical patent/SE0001657D0/en
Priority to AU56897/01A priority patent/AU5689701A/en
Priority to PCT/SE2001/000953 priority patent/WO2001086109A1/en
Publication of SE0001657L publication Critical patent/SE0001657L/en
Publication of SE515730C2 publication Critical patent/SE515730C2/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/064—Deflecting the direction of boreholes specially adapted drill bits therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • E21B47/013—Devices specially adapted for supporting measuring instruments on drill bits
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/36—Percussion drill bits
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers

Abstract

A downhole drilling machine (12) can be used for directional drilling for example for drilling through roadbeds. The drill bit (14) of the machine has an unsymmetrical face so that it drills a curved hole when it drills without being rotated. When it is rotated, it drills straight. The shank (16) of the drill bit has an unsymmetrical splined connection (18) with a sleeve (19) which in its turn has an unsymmetrical splined connection with the housing (21) of the machine. The machine adapter (11) has sensors that provide information of the direction and angular position of the adapter.
SE0001657A 2000-05-05 2000-05-05 The drill bit attachment SE515730C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE0001657A SE515730C2 (en) 2000-05-05 2000-05-05 The drill bit attachment
AU56897/01A AU5689701A (en) 2000-05-05 2001-05-03 Drill bit mounting for a downhole drilling machine
PCT/SE2001/000953 WO2001086109A1 (en) 2000-05-05 2001-05-03 Drill bit mounting for a downhole drilling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0001657A SE515730C2 (en) 2000-05-05 2000-05-05 The drill bit attachment

Publications (3)

Publication Number Publication Date
SE0001657D0 true SE0001657D0 (en) 2000-05-05
SE0001657L SE0001657L (en) 2001-10-01
SE515730C2 SE515730C2 (en) 2001-10-01

Family

ID=20279556

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0001657A SE515730C2 (en) 2000-05-05 2000-05-05 The drill bit attachment

Country Status (3)

Country Link
AU (1) AU5689701A (en)
SE (1) SE515730C2 (en)
WO (1) WO2001086109A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1419981A (en) * 1973-01-09 1976-01-07 Halifax Tool Co Ltd Percussion drills
US4508182A (en) * 1983-07-20 1985-04-02 Dailey Petroleum Services Corp. Method and apparatus for controlling azimuthal drift of a drill bit
US5368110A (en) * 1993-10-28 1994-11-29 Texaco Inc. Downhole rotary bearing sub
SE505171C2 (en) * 1993-12-13 1997-07-07 G Drill Ab Valve slide in a hydraulic percussion
WO2000055467A1 (en) * 1999-03-03 2000-09-21 Earth Tool Company, L.L.C. Method and apparatus for directional boring

Also Published As

Publication number Publication date
WO2001086109A1 (en) 2001-11-15
SE0001657L (en) 2001-10-01
SE515730C2 (en) 2001-10-01
AU5689701A (en) 2001-11-20

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Legal Events

Date Code Title Description
NUG Patent has lapsed