DE2155925C2 - Einrollenkernbohrer - Google Patents

Einrollenkernbohrer

Info

Publication number
DE2155925C2
DE2155925C2 DE19712155925 DE2155925A DE2155925C2 DE 2155925 C2 DE2155925 C2 DE 2155925C2 DE 19712155925 DE19712155925 DE 19712155925 DE 2155925 A DE2155925 A DE 2155925A DE 2155925 C2 DE2155925 C2 DE 2155925C2
Authority
DE
Germany
Prior art keywords
core
cutting
drill
drilling
hollow pin
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
DE19712155925
Other languages
German (de)
English (en)
Other versions
DE2155925B1 (de
DE2155925A1 (enExample
Inventor
Iwan P. Dorodnow
Iwan P. Erf: Dorodnow
Grigorij I. Moskau Matwejew
Tigran Ch. Sarkisjanz
Wiktor A. Schewtschenko
Alexandr W. Subarew
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.)
Sewero-Kowkasskij Gosudarstwenny Nautschno-Issledowatelskij I Projektny Institut Neftjanoj Promyschlennosti Grosnyj (s1 Ot -- Bt 220273 Beowjetunion)
Original Assignee
Sewero-Kowkasskij Gosudarstwenny Nautschno-Issledowatelskij I Projektny Institut Neftjanoj Promyschlennosti Grosnyj (s1 Ot -- Bt 220273 Beowjetunion)
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 Sewero-Kowkasskij Gosudarstwenny Nautschno-Issledowatelskij I Projektny Institut Neftjanoj Promyschlennosti Grosnyj (s1 Ot -- Bt 220273 Beowjetunion) filed Critical Sewero-Kowkasskij Gosudarstwenny Nautschno-Issledowatelskij I Projektny Institut Neftjanoj Promyschlennosti Grosnyj (s1 Ot -- Bt 220273 Beowjetunion)
Priority to DE19712155925 priority Critical patent/DE2155925C2/de
Publication of DE2155925B1 publication Critical patent/DE2155925B1/de
Publication of DE2155925A1 publication Critical patent/DE2155925A1/de
Application granted granted Critical
Publication of DE2155925C2 publication Critical patent/DE2155925C2/de
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
    • E21B10/02—Core bits
    • E21B10/06—Roller core bits
    • 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
    • E21B10/08—Roller bits
    • E21B10/083—Roller bits with longitudinal axis, e.g. wobbling or nutating roller bit

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)
DE19712155925 1971-11-10 1971-11-10 Einrollenkernbohrer Expired DE2155925C2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712155925 DE2155925C2 (de) 1971-11-10 1971-11-10 Einrollenkernbohrer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712155925 DE2155925C2 (de) 1971-11-10 1971-11-10 Einrollenkernbohrer

Publications (3)

Publication Number Publication Date
DE2155925B1 DE2155925B1 (de) 1973-02-22
DE2155925A1 DE2155925A1 (enExample) 1973-02-22
DE2155925C2 true DE2155925C2 (de) 1973-09-13

Family

ID=5824755

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712155925 Expired DE2155925C2 (de) 1971-11-10 1971-11-10 Einrollenkernbohrer

Country Status (1)

Country Link
DE (1) DE2155925C2 (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168755A (en) * 1977-08-08 1979-09-25 Walker-Neer Manufacturing Co. Nutating drill bit
US4203496A (en) * 1978-10-16 1980-05-20 Smith International, Inc. Longitudinal axis roller drill bit with gage inserts protection

Also Published As

Publication number Publication date
DE2155925B1 (de) 1973-02-22
DE2155925A1 (enExample) 1973-02-22

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee