DK0543806T3 - Mountain drill with hydraulic drive in the borehole - Google Patents

Mountain drill with hydraulic drive in the borehole

Info

Publication number
DK0543806T3
DK0543806T3 DK90911460.5T DK90911460T DK0543806T3 DK 0543806 T3 DK0543806 T3 DK 0543806T3 DK 90911460 T DK90911460 T DK 90911460T DK 0543806 T3 DK0543806 T3 DK 0543806T3
Authority
DK
Denmark
Prior art keywords
piston hammer
chamber
piston
borehole
hammer
Prior art date
Application number
DK90911460.5T
Other languages
Danish (da)
Inventor
Per Gustafsson
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
Application granted granted Critical
Publication of DK0543806T3 publication Critical patent/DK0543806T3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Catching Or Destruction (AREA)

Abstract

A hydraulic down-the-hole rock drill is adapted to be driven by pressure water. The spent drive fluid is utilised as a flushing medium to flush the debris out of the borehole. The piston hammer (20) is guided at its front and rear ends and a continuously pressurized chamber (28) extends around the piston hammer all the way between the two guiding portions (22, 27). The front guiding portion (22) has a smaller diameter than the rear guiding portion (27) so that the piston hammer will have a differential piston area in the chamber (28). Thus, the pressure in the chamber (28) will provide a continuous force backwards on the piston hammer and cause the return stroke of the piston hammer when a valve controlled cylinder chamber (34) at the rear end of the piston hammer is depressurized.
DK90911460.5T 1990-07-12 1990-07-12 Mountain drill with hydraulic drive in the borehole DK0543806T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1990/000490 WO1992001138A1 (en) 1990-07-12 1990-07-12 Hydraulic down-the-hole rock drill

Publications (1)

Publication Number Publication Date
DK0543806T3 true DK0543806T3 (en) 1996-05-06

Family

ID=20378526

Family Applications (1)

Application Number Title Priority Date Filing Date
DK90911460.5T DK0543806T3 (en) 1990-07-12 1990-07-12 Mountain drill with hydraulic drive in the borehole

Country Status (6)

Country Link
EP (1) EP0543806B1 (en)
AT (1) ATE133233T1 (en)
DE (1) DE69024978T2 (en)
DK (1) DK0543806T3 (en)
ES (1) ES2084033T3 (en)
WO (1) WO1992001138A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2133425A1 (en) * 1992-04-01 1994-10-14 Fredrich Graham Moir Liquid-driven downhole hammer drill
AU688311B2 (en) * 1993-04-05 1998-03-12 Impact Drilling International Pty Ltd Percussion drilling improvements
PT692061E (en) * 1993-04-05 2002-12-31 Sds Pty Ltd PERFORACING PERFORMANCE IN PERCUSSION
DE4433533C1 (en) * 1994-09-20 1995-11-23 Terra Ag Tiefbautechnik Hydraulic ram=type drill
AUPO957097A0 (en) * 1997-10-01 1997-10-30 Rear, Ian Graeme Hammer
DK1104436T3 (en) 1998-08-10 2006-04-03 Centre Nat Rech Scient Beta-L-2'-deoxy nucleosides for the treatment of hepatitis B virus
US6444652B1 (en) 1998-08-10 2002-09-03 Novirio Pharmaceuticals Limited β-L-2'-deoxy-nucleosides for the treatment of hepatitis B
US6464023B2 (en) 1999-01-27 2002-10-15 William N. Patterson Hydraulic in-the-hole percussion rock drill
US6155361A (en) * 1999-01-27 2000-12-05 Patterson; William N. Hydraulic in-the-hole percussion rock drill
CA2295463C (en) 1999-01-27 2008-04-29 William N. Patterson Hydraulic in-the-hole percussion rock drill
US6875751B2 (en) 2000-06-15 2005-04-05 Idenix Pharmaceuticals, Inc. 3′-prodrugs of 2′-deoxy-β-L-nucleosides
DE10146025B4 (en) * 2000-12-02 2004-12-16 Tracto-Technik Gmbh Method and system for horizontal earth drilling and striking tip and method for starting a striking tool
GB2389134B (en) 2000-12-02 2005-06-08 Tracto Technik Pneumatic rock-drilling apparatus
WO2007036721A2 (en) * 2005-09-29 2007-04-05 Read Well Services Limited Apparatus and method for generating a seismic signal for use in downhole surveying
US7681664B2 (en) 2008-03-06 2010-03-23 Patterson William N Internally dampened percussion rock drill
EP2987945B1 (en) * 2014-08-19 2018-01-31 Doofor Oy Hydraulic striking device
CN108166920B (en) * 2017-12-26 2020-04-24 中国石油天然气集团公司 Impact piston and self-excitation type composite impact drilling tool using same
CN113585960B (en) * 2021-08-05 2023-11-21 重庆大学 Central rotary valve type hydraulic impactor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RO74260A (en) * 1974-04-25 1980-10-30 Oy Tampella Ab,Fi POWERFUL PERFORATER WITH PRESSURE LIQUID
DE3343565C2 (en) * 1983-12-01 1985-11-14 Ing. Günter Klemm, Spezialunternehmen für Bohrtechnik, 5962 Drolshagen Downhole hammer
DE3443542A1 (en) * 1984-11-29 1986-06-05 Fried. Krupp Gmbh, 4300 Essen HYDRAULIC BEATER
SE500654C2 (en) * 1987-07-14 1994-08-01 G Drill Ab Hydraulic submersible drill

Also Published As

Publication number Publication date
ATE133233T1 (en) 1996-02-15
ES2084033T3 (en) 1996-05-01
WO1992001138A1 (en) 1992-01-23
DE69024978T2 (en) 1996-12-12
EP0543806A1 (en) 1993-06-02
DE69024978D1 (en) 1996-02-29
EP0543806B1 (en) 1996-01-17

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