ATE120829T1 - TELESCOPIC DRILL PIPE. - Google Patents

TELESCOPIC DRILL PIPE.

Info

Publication number
ATE120829T1
ATE120829T1 AT89123365T AT89123365T ATE120829T1 AT E120829 T1 ATE120829 T1 AT E120829T1 AT 89123365 T AT89123365 T AT 89123365T AT 89123365 T AT89123365 T AT 89123365T AT E120829 T1 ATE120829 T1 AT E120829T1
Authority
AT
Austria
Prior art keywords
inner rod
string
telescopic drill
drill pipe
adjacent
Prior art date
Application number
AT89123365T
Other languages
German (de)
Inventor
Wilhelm Schaufenberg
Original Assignee
Wirth Co Kg Masch Bohr
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 Wirth Co Kg Masch Bohr filed Critical Wirth Co Kg Masch Bohr
Application granted granted Critical
Publication of ATE120829T1 publication Critical patent/ATE120829T1/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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers

Abstract

In a telescopic drill string which contains an inner rod (4) and at least one further string part (3) coaxial to the inner rod (4), the string parts being provided with means for transmitting torque and for transmitting a pressure force in the direction of a connecting piece (9) for a tool, a coupling device (11) is provided for the inner rod (4) and the string part (3) adjacent to it. The coupling device (11) has a removable coupling part (16) overlapping a shock absorber (10) of the inner rod (4) in the mounted state and leaving the inner rod (4) with limited axial mobility relative to the adjacent string part (3). <IMAGE>
AT89123365T 1988-12-19 1989-12-18 TELESCOPIC DRILL PIPE. ATE120829T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE8815738U DE8815738U1 (en) 1988-12-19 1988-12-19

Publications (1)

Publication Number Publication Date
ATE120829T1 true ATE120829T1 (en) 1995-04-15

Family

ID=6830918

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89123365T ATE120829T1 (en) 1988-12-19 1989-12-18 TELESCOPIC DRILL PIPE.

Country Status (3)

Country Link
EP (1) EP0374788B1 (en)
AT (1) ATE120829T1 (en)
DE (2) DE8815738U1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8815738U1 (en) * 1988-12-19 1989-02-02 Wirth Maschinen- Und Bohrgeraete-Fabrik Gmbh, 5140 Erkelenz, De
US5263899A (en) * 1990-06-12 1993-11-23 Hitachi Construction Machinery Co., Ltd. Cylindrical telescopic kelly-bar apparatus
CN116537751B (en) * 2023-07-05 2023-09-08 黑龙江省水利学校(黑龙江水利高级技工学校) Gravel filling material conveying pipe for hydrogeological hole construction and construction method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460619A (en) * 1967-02-27 1969-08-12 Byron Jackson Inc Hydraulically locked adjustable tail pipe for well tools
US3517760A (en) * 1968-03-22 1970-06-30 Delmag Maschinenfabrik Telescopic drill rods for soil drilling equipments
DE2057101C2 (en) * 1970-11-20 1974-03-07 Wirth Co Kg Masch Bohr Telescopic drill pipe
DE8815738U1 (en) * 1988-12-19 1989-02-02 Wirth Maschinen- Und Bohrgeraete-Fabrik Gmbh, 5140 Erkelenz, De

Also Published As

Publication number Publication date
DE58909164D1 (en) 1995-05-11
EP0374788A2 (en) 1990-06-27
DE8815738U1 (en) 1989-02-02
EP0374788A3 (en) 1991-03-13
EP0374788B1 (en) 1995-04-05

Similar Documents

Publication Publication Date Title
ES8106788A1 (en) Fluid operated rock drill hammer
CA2217899A1 (en) Dual-member pipe joint for a dual member drill string
CA2284516A1 (en) Rotary and longitudinal shock absorber for drilling
ATE48176T1 (en) DRILLING JIG.
DK597088A (en) CLUTCH NAMELY TO A DIAMOND DRILL CHRONICLE WITH SCRAP THREATS AND CIRCULAR WIND CONNECTION
WO1991008370A3 (en) Device for steering the foremost part of a drill pipe
DE58907423D1 (en) Torque wrench.
ATE120829T1 (en) TELESCOPIC DRILL PIPE.
SE8402618L (en) DRIVING FOR A GENERAL RAILWAY AND ALSO INTEGRATED DRIVING DEVICE
AU577406B2 (en) Joint device for percussion drill
DK0969218T3 (en) Protective device for a propeller with a universal joint
SE8302663L (en) COUPLING
SE8203716L (en) DRILL HAMMER WITH TOOL HOLDER
DE3860397D1 (en) CLUTCH DEVICE.
DE69814160D1 (en) LINING WITH AXIAL POSITIONING DEVICE
SE8403432L (en) Rock drilling equipment
SE9504606D0 (en) Device for riveting
RU92009865A (en) DEVICE FOR DRILLING COUPLED SPECIMENS
JPS6420006A (en) Apparatus for transmitting power of tractor to working machine
EP0962289A3 (en) Bolt driving tool
SE8802647L (en) BORRSTAANG
DE3662416D1 (en) A drill adapter
SE8005002L (en) TOOLS PREFERRED TO USE IN COOPERATION WITH A SUCCESS HAMMER MOUNTED ON A LARGE WORKING MACHINE, EXCEPT A EXCAVATOR FOR DRIVING EXAMPLE WHEELS IN THE MARKET

Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee