FI903615A0 - BORRNINGSFOERFARANDE OCH BORRKRONEAPPARATUR. - Google Patents

BORRNINGSFOERFARANDE OCH BORRKRONEAPPARATUR.

Info

Publication number
FI903615A0
FI903615A0 FI903615A FI903615A FI903615A0 FI 903615 A0 FI903615 A0 FI 903615A0 FI 903615 A FI903615 A FI 903615A FI 903615 A FI903615 A FI 903615A FI 903615 A0 FI903615 A0 FI 903615A0
Authority
FI
Finland
Prior art keywords
borrningsfoerfarande
borrkroneapparatur
och
och borrkroneapparatur
borrningsfoerfarande och
Prior art date
Application number
FI903615A
Other languages
Finnish (fi)
Other versions
FI87390C (en
FI87390B (en
FI903615A (en
Inventor
Tarmo Lehtonen
Original Assignee
Geomachine Oy
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 Geomachine Oy filed Critical Geomachine Oy
Priority to FI903615A priority Critical patent/FI87390C/en
Publication of FI903615A0 publication Critical patent/FI903615A0/en
Priority to AU82078/91A priority patent/AU8207891A/en
Priority to PCT/FI1991/000220 priority patent/WO1992001857A1/en
Publication of FI903615A publication Critical patent/FI903615A/en
Application granted granted Critical
Publication of FI87390B publication Critical patent/FI87390B/en
Publication of FI87390C publication Critical patent/FI87390C/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
    • E21B12/00—Accessories for drilling tools
    • E21B12/04—Drill bit protectors
    • 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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/003—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by analysing drilling variables or conditions
    • 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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/006—Measuring wall stresses in the borehole
FI903615A 1990-07-18 1990-07-18 Drilling procedure and drill bit apparatus FI87390C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI903615A FI87390C (en) 1990-07-18 1990-07-18 Drilling procedure and drill bit apparatus
AU82078/91A AU8207891A (en) 1990-07-18 1991-07-18 Drilling method and drill bit equipment
PCT/FI1991/000220 WO1992001857A1 (en) 1990-07-18 1991-07-18 Drilling method and drill bit equipment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI903615 1990-07-18
FI903615A FI87390C (en) 1990-07-18 1990-07-18 Drilling procedure and drill bit apparatus

Publications (4)

Publication Number Publication Date
FI903615A0 true FI903615A0 (en) 1990-07-18
FI903615A FI903615A (en) 1992-01-19
FI87390B FI87390B (en) 1992-09-15
FI87390C FI87390C (en) 1992-12-28

Family

ID=8530817

Family Applications (1)

Application Number Title Priority Date Filing Date
FI903615A FI87390C (en) 1990-07-18 1990-07-18 Drilling procedure and drill bit apparatus

Country Status (3)

Country Link
AU (1) AU8207891A (en)
FI (1) FI87390C (en)
WO (1) WO1992001857A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644672A (en) * 1951-01-29 1953-07-07 Ted C Mathews Diamond bit protector
US2723836A (en) * 1954-09-24 1955-11-15 Bit Guides Inc Core bit protector
CH560312A5 (en) * 1972-09-15 1975-03-27 Lorenz Howard Ira Drill bit protective sheath - for rock drills

Also Published As

Publication number Publication date
FI87390C (en) 1992-12-28
FI87390B (en) 1992-09-15
FI903615A (en) 1992-01-19
AU8207891A (en) 1992-02-18
WO1992001857A1 (en) 1992-02-06

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: GEOMACHINE OY