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GB2139671B - Drilling devices - Google Patents
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GB2139671B - Drilling devices - Google Patents

Drilling devices

Info

Publication number
GB2139671B
GB2139671B GB08316396A GB8316396A GB2139671B GB 2139671 B GB2139671 B GB 2139671B GB 08316396 A GB08316396 A GB 08316396A GB 8316396 A GB8316396 A GB 8316396A GB 2139671 B GB2139671 B GB 2139671B
Authority
GB
United Kingdom
Prior art keywords
drilling devices
drilling
devices
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
GB08316396A
Other versions
GB8316396D0 (en
GB2139671A (en
Inventor
Mordechai Yuger
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.)
LIPSKER ENG
Original Assignee
LIPSKER ENG
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
Priority claimed from IL67667A external-priority patent/IL67667A0/en
Application filed by LIPSKER ENG filed Critical LIPSKER ENG
Publication of GB8316396D0 publication Critical patent/GB8316396D0/en
Publication of GB2139671A publication Critical patent/GB2139671A/en
Application granted granted Critical
Publication of GB2139671B publication Critical patent/GB2139671B/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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/003—Drilling with mechanical conveying means
    • 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
    • E21B10/322—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 cutter shifted by fluid pressure
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/26—Drilling without earth removal, e.g. with self-propelled burrowing devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
GB08316396A 1983-01-12 1983-06-16 Drilling devices Expired GB2139671B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL67667A IL67667A0 (en) 1982-06-16 1983-01-12 Improvements relating to soil drilling devices

Publications (3)

Publication Number Publication Date
GB8316396D0 GB8316396D0 (en) 1983-07-20
GB2139671A GB2139671A (en) 1984-11-14
GB2139671B true GB2139671B (en) 1987-07-08

Family

ID=11054003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08316396A Expired GB2139671B (en) 1983-01-12 1983-06-16 Drilling devices

Country Status (1)

Country Link
GB (1) GB2139671B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL75160A0 (en) * 1985-05-10 1985-09-29 Yitzhaq Lipsker Soil drilling equipment
GB8615280D0 (en) * 1986-06-23 1986-07-30 Rice N Sewer renovation
BE1003914A3 (en) * 1989-06-22 1992-07-14 Corstjens Helena Michel Method for increasing the passage of a pipe in the ground and thus used hose.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1006048A (en) * 1963-09-02 1965-09-29 Bade & Co Gmbh A method of forming bored piles and gear for performing the same
GB1102682A (en) * 1965-04-13 1968-02-07 Gnii Keramzitu A device for making enlargements in holes for piles
US4193461A (en) * 1978-02-13 1980-03-18 Intrusion-Prepakt, Inc. Means and method for forming and enlarging holes in soil

Also Published As

Publication number Publication date
GB8316396D0 (en) 1983-07-20
GB2139671A (en) 1984-11-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010616