FR704391A - Improvements in tools for sinking wells - Google Patents

Improvements in tools for sinking wells

Info

Publication number
FR704391A
FR704391A FR704391DA FR704391A FR 704391 A FR704391 A FR 704391A FR 704391D A FR704391D A FR 704391DA FR 704391 A FR704391 A FR 704391A
Authority
FR
France
Prior art keywords
tools
sinking wells
sinking
wells
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)
Inventor
Arthur Alexander Helmecke
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 filed Critical
Application granted granted Critical
Publication of FR704391A publication Critical patent/FR704391A/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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
FR704391D 1930-10-27 1930-10-27 Improvements in tools for sinking wells Expired FR704391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR704391T 1930-10-27

Publications (1)

Publication Number Publication Date
FR704391A true FR704391A (en) 1931-05-19

Family

ID=9065332

Family Applications (1)

Application Number Title Priority Date Filing Date
FR704391D Expired FR704391A (en) 1930-10-27 1930-10-27 Improvements in tools for sinking wells

Country Status (1)

Country Link
FR (1) FR704391A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113294099A (en) * 2021-06-23 2021-08-24 中勘资源勘探科技股份有限公司 Large-diameter drill bit centering device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113294099A (en) * 2021-06-23 2021-08-24 中勘资源勘探科技股份有限公司 Large-diameter drill bit centering device

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