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GB2190122B - Borehole drill construction - Google Patents

Borehole drill construction

Info

Publication number
GB2190122B
GB2190122B GB8709571A GB8709571A GB2190122B GB 2190122 B GB2190122 B GB 2190122B GB 8709571 A GB8709571 A GB 8709571A GB 8709571 A GB8709571 A GB 8709571A GB 2190122 B GB2190122 B GB 2190122B
Authority
GB
United Kingdom
Prior art keywords
borehole drill
drill construction
borehole
construction
drill
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
GB8709571A
Other versions
GB8709571D0 (en
GB2190122A (en
Inventor
Melvyn Samuel James Ennis
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.)
Individual
Original Assignee
Individual
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 GB868611091A external-priority patent/GB8611091D0/en
Application filed by Individual filed Critical Individual
Priority to GB8709571A priority Critical patent/GB2190122B/en
Publication of GB8709571D0 publication Critical patent/GB8709571D0/en
Publication of GB2190122A publication Critical patent/GB2190122A/en
Application granted granted Critical
Publication of GB2190122B publication Critical patent/GB2190122B/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
    • E21B4/14—Fluid operated hammers
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
    • E21B17/076—Telescoping joints for varying drill string lengths; Shock absorbers between rod or pipe and drill bit
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems

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)
GB8709571A 1986-05-07 1987-04-23 Borehole drill construction Expired GB2190122B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8709571A GB2190122B (en) 1986-05-07 1987-04-23 Borehole drill construction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868611091A GB8611091D0 (en) 1986-05-07 1986-05-07 Borehole drill construction
GB8709571A GB2190122B (en) 1986-05-07 1987-04-23 Borehole drill construction

Publications (3)

Publication Number Publication Date
GB8709571D0 GB8709571D0 (en) 1987-05-28
GB2190122A GB2190122A (en) 1987-11-11
GB2190122B true GB2190122B (en) 1989-12-06

Family

ID=26290728

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8709571A Expired GB2190122B (en) 1986-05-07 1987-04-23 Borehole drill construction

Country Status (1)

Country Link
GB (1) GB2190122B (en)

Also Published As

Publication number Publication date
GB8709571D0 (en) 1987-05-28
GB2190122A (en) 1987-11-11

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Legal Events

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

Effective date: 20000423