FR321897A - expander for free-fall soundings - Google Patents

expander for free-fall soundings

Info

Publication number
FR321897A
FR321897A FR321897A FR321897DA FR321897A FR 321897 A FR321897 A FR 321897A FR 321897 A FR321897 A FR 321897A FR 321897D A FR321897D A FR 321897DA FR 321897 A FR321897 A FR 321897A
Authority
FR
France
Prior art keywords
soundings
expander
fall
free
fall soundings
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.)
Expired
Application number
FR321897A
Other languages
French (fr)
Inventor
Palaud Hugo
Sauerland Heinrich
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.)
PALAUD HUGO
SAUERLAND HEINRICH
Original Assignee
PALAUD HUGO
SAUERLAND HEINRICH
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 PALAUD HUGO, SAUERLAND HEINRICH filed Critical PALAUD HUGO
Application granted granted Critical
Publication of FR321897A publication Critical patent/FR321897A/en
Expired legal-status Critical Current

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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools

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)
FR321897A 1902-06-09 1902-06-09 expander for free-fall soundings Expired FR321897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR321897T 1902-06-09

Publications (1)

Publication Number Publication Date
FR321897A true FR321897A (en) 1903-01-22

Family

ID=1372296

Family Applications (1)

Application Number Title Priority Date Filing Date
FR321897A Expired FR321897A (en) 1902-06-09 1902-06-09 expander for free-fall soundings

Country Status (1)

Country Link
FR (1) FR321897A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444279A (en) * 1979-07-14 1984-04-24 Hilti Aktiengesellschaft Drilling tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444279A (en) * 1979-07-14 1984-04-24 Hilti Aktiengesellschaft Drilling tool

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