FR339672A - Electrical apparatus for vertical shaking soundings - Google Patents

Electrical apparatus for vertical shaking soundings

Info

Publication number
FR339672A
FR339672A FR339672DA FR339672A FR 339672 A FR339672 A FR 339672A FR 339672D A FR339672D A FR 339672DA FR 339672 A FR339672 A FR 339672A
Authority
FR
France
Prior art keywords
soundings
electrical apparatus
vertical shaking
shaking
vertical
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
Other languages
French (fr)
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.)
TIEFBOHR ACTIENGESELLSCHAFT DE
Original Assignee
TIEFBOHR ACTIENGESELLSCHAFT DE
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 TIEFBOHR ACTIENGESELLSCHAFT DE filed Critical TIEFBOHR ACTIENGESELLSCHAFT DE
Application granted granted Critical
Publication of FR339672A publication Critical patent/FR339672A/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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/12—Electrically 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)
FR339672D 1904-01-18 1904-01-18 Electrical apparatus for vertical shaking soundings Expired FR339672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR339672T 1904-01-18

Publications (1)

Publication Number Publication Date
FR339672A true FR339672A (en) 1904-06-16

Family

ID=1388839

Family Applications (1)

Application Number Title Priority Date Filing Date
FR339672D Expired FR339672A (en) 1904-01-18 1904-01-18 Electrical apparatus for vertical shaking soundings

Country Status (1)

Country Link
FR (1) FR339672A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514070A1 (en) * 1981-10-07 1983-04-08 Martelec Electric rotary drilling tool - employs electromagnetic percussion assembly to apply impact forces to drill bit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514070A1 (en) * 1981-10-07 1983-04-08 Martelec Electric rotary drilling tool - employs electromagnetic percussion assembly to apply impact forces to drill bit

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