SE9102290L - HYDRAULIC HAMMER - Google Patents

HYDRAULIC HAMMER

Info

Publication number
SE9102290L
SE9102290L SE9102290A SE9102290A SE9102290L SE 9102290 L SE9102290 L SE 9102290L SE 9102290 A SE9102290 A SE 9102290A SE 9102290 A SE9102290 A SE 9102290A SE 9102290 L SE9102290 L SE 9102290L
Authority
SE
Sweden
Prior art keywords
hammer
bit
passage
hydraulic hammer
fluid
Prior art date
Application number
SE9102290A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9102290D0 (en
Inventor
Bernard Lionel Gien
Original Assignee
Gien Bernard L
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 Gien Bernard L filed Critical Gien Bernard L
Publication of SE9102290D0 publication Critical patent/SE9102290D0/en
Publication of SE9102290L publication Critical patent/SE9102290L/en

Links

Classifications

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

Abstract

A bit (2) in a down-the-hole drill rod (4) is driven down by a hammer (8) under the action of hydraulic pressure applied intermittently through fluid (19) to a stem (9) of the hammer. Compressed gas is applied through passages (15, 12, 13) to act between the hammer and bit for the return stroke of the hammer. The bit may be flushed by the gas through passage (6) or by the hydraulic fluid through a passage in the hammer. No internal valve is, therefore, required. <IMAGE>
SE9102290A 1990-08-06 1991-08-05 HYDRAULIC HAMMER SE9102290L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA906166 1990-08-06

Publications (2)

Publication Number Publication Date
SE9102290D0 SE9102290D0 (en) 1991-08-05
SE9102290L true SE9102290L (en) 1992-02-07

Family

ID=25580234

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9102290A SE9102290L (en) 1990-08-06 1991-08-05 HYDRAULIC HAMMER

Country Status (5)

Country Link
AU (1) AU8163291A (en)
CA (1) CA2048374A1 (en)
DE (1) DE4125880A1 (en)
GB (1) GB2246803A (en)
SE (1) SE9102290L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2913365C (en) 2007-11-20 2017-01-24 National Oilwell Varco, L.P. Circulation sub with indexing mechanism
GB201101033D0 (en) 2011-01-21 2011-03-09 Nov Downhole Eurasia Ltd Downhole tool

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995700A (en) * 1975-10-14 1976-12-07 Gardner-Denver Company Hydraulic rock drill system
FI56430C (en) * 1975-10-20 1982-08-09 Tampella Oy Ab SLAGANORDNING DRIVEN AV EN TRYCKVAETSKA
GB1556754A (en) * 1976-12-10 1979-11-28 Af Hydraulics Hydraulically-actuated percussive device with overstroke damping
ES464093A1 (en) * 1977-11-12 1978-12-16 Luis Miguel Castejon Castan Fluid arrangement
SE8205029L (en) * 1981-11-05 1983-05-06 Ingersoll Rand Co HYDRAULIC DRIVE FORM AND RETURN MACHINE

Also Published As

Publication number Publication date
AU8163291A (en) 1992-02-13
GB2246803A (en) 1992-02-12
DE4125880A1 (en) 1992-02-13
CA2048374A1 (en) 1992-02-07
GB9116841D0 (en) 1991-09-18
SE9102290D0 (en) 1991-08-05

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