EP2339109A3 - Earth drilling tool and method - Google Patents

Earth drilling tool and method Download PDF

Info

Publication number
EP2339109A3
EP2339109A3 EP10196499.7A EP10196499A EP2339109A3 EP 2339109 A3 EP2339109 A3 EP 2339109A3 EP 10196499 A EP10196499 A EP 10196499A EP 2339109 A3 EP2339109 A3 EP 2339109A3
Authority
EP
European Patent Office
Prior art keywords
drill
drilling tool
assembly
bit portion
drill bit
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP10196499.7A
Other languages
German (de)
French (fr)
Other versions
EP2339109A2 (en
EP2339109B1 (en
Inventor
Jan-Åke Löf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lovab AB
Original Assignee
Lovab 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 Lovab AB filed Critical Lovab AB
Publication of EP2339109A2 publication Critical patent/EP2339109A2/en
Publication of EP2339109A3 publication Critical patent/EP2339109A3/en
Application granted granted Critical
Publication of EP2339109B1 publication Critical patent/EP2339109B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • 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
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • 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
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives

Abstract

The present invention relates to a drilling tool for down-the-hole drilling, which drilling tool is intended to drill a hole ahead of a following casing tube, the drilling tool comprising a drill assembly which comprises a central pilot drill bit portion, a peripheral ring shaped drill bit portion and a casing shoe , said assembly being coupled to a drill string wherein the drill string is connected to the assembly via a drive shaft device which releasably interfits with the central pilot drill bit portion for transmitting torque from the drill string to the drill assembly.
EP10196499.7A 2009-12-23 2010-12-22 Earth drilling tool and method Not-in-force EP2339109B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0951022 2009-12-23

Publications (3)

Publication Number Publication Date
EP2339109A2 EP2339109A2 (en) 2011-06-29
EP2339109A3 true EP2339109A3 (en) 2016-09-14
EP2339109B1 EP2339109B1 (en) 2017-12-20

Family

ID=43629119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10196499.7A Not-in-force EP2339109B1 (en) 2009-12-23 2010-12-22 Earth drilling tool and method

Country Status (1)

Country Link
EP (1) EP2339109B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102561951A (en) * 2012-01-14 2012-07-11 中国石油天然气集团公司 Double-stage and double-speed well drilling tool
SE537708C2 (en) * 2012-04-04 2015-10-06 Lkab Wassara Ab Drilling device for pipe drive
WO2014001601A1 (en) * 2012-06-28 2014-01-03 Oy Atlas Copco Rotex Ab Method and apparatus for use of a drilling device meant for down-the-hole drilling
WO2018030464A1 (en) * 2016-08-09 2018-02-15 三菱マテリアル株式会社 Excavating tool
JP6751643B2 (en) * 2016-10-13 2020-09-09 昌稔 野並 Drilling tool
JP6312280B1 (en) * 2017-12-25 2018-04-18 青葉建機株式会社 Drilling rig

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991012406A1 (en) * 1990-02-19 1991-08-22 Sandvik Ab A down-the-hole drill tool for drilling in advance of a casing tube
WO2003004824A1 (en) * 2001-07-02 2003-01-16 Loef Uno Earth drilling device
WO2005098194A1 (en) * 2004-04-07 2005-10-20 Oy Atlas Copco Rotex Ab Device for a drilling tool

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3613265A1 (en) 1986-04-19 1987-10-22 Christensen Inc Norton CORE DRILLING TOOL FOR STONE DRILLING
WO1995034740A1 (en) 1994-06-10 1995-12-21 Ilomaeki Valto Drilling apparatus
US5803192A (en) 1996-05-13 1998-09-08 Holte; Ardis L. Drill bit retainer for a down hole hammer assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991012406A1 (en) * 1990-02-19 1991-08-22 Sandvik Ab A down-the-hole drill tool for drilling in advance of a casing tube
WO2003004824A1 (en) * 2001-07-02 2003-01-16 Loef Uno Earth drilling device
WO2005098194A1 (en) * 2004-04-07 2005-10-20 Oy Atlas Copco Rotex Ab Device for a drilling tool

Also Published As

Publication number Publication date
EP2339109A2 (en) 2011-06-29
EP2339109B1 (en) 2017-12-20

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