GB269922A - Improvements in bore-hole apparatus - Google Patents

Improvements in bore-hole apparatus

Info

Publication number
GB269922A
GB269922A GB10830/27A GB1083027A GB269922A GB 269922 A GB269922 A GB 269922A GB 10830/27 A GB10830/27 A GB 10830/27A GB 1083027 A GB1083027 A GB 1083027A GB 269922 A GB269922 A GB 269922A
Authority
GB
United Kingdom
Prior art keywords
cutters
recesses
housing
engage
projections
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
GB10830/27A
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
Application filed by Individual filed Critical Individual
Priority to GB10830/27A priority Critical patent/GB269922A/en
Publication of GB269922A publication Critical patent/GB269922A/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
    • 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
    • E21B10/325—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 the cutter being shifted by a spring mechanism
    • 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
    • E21B7/04—Directional drilling
    • E21B7/10—Correction of deflected boreholes

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)

Abstract

269,922. Frank, J. April 22, 1927. Borehole apparatus. -A boring tool comprises cutters 15 with hooked upper ends for engagement with the lower end 14 of a yoke 9 carried by a rod 6 which is pressed upwardly by a compression spring 5, the cutters being held in conection with the yoke 9 by a member 11 with downward projections loosely engaging recesses in the cutters, and by a block 10 provided with balls 20 which are pressed into recesses in the parts 9, 11 by a rubber or spiral spring; a member 16 depending from the housing 2 of the apparatus causes the cutters to move outwardly when they assume their upper position, Fig. 1, while when the cutters are moved into their lower position, Fig. 2, they are movable inwardly for passage through the casing tube, recesses in the cutters then accommodating the member 16. Slots 4 are provided in the housing 2 to receive a key &c. by which the rod 6 and cutters are moved to their lower position. Overlapping extensions 21 at the lower end of the cutters engage the wedge-shaped lower end of the member 16 when the cutters are in their upper position, and at the same time projections on the upper ends of the cutters engage recesses 12 in the housing 2; further, when in this position, dovetail projections on the cutters engage similar recesses at the sides of the member 16. For chipping operations on damaged pipes at the bottom of the borehole. the cutters 15 are replaced by a wedge-shaped cutter 18, Fig. 8, and a flat sided member 17.
GB10830/27A 1927-04-22 1927-04-22 Improvements in bore-hole apparatus Expired GB269922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB10830/27A GB269922A (en) 1927-04-22 1927-04-22 Improvements in bore-hole apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10830/27A GB269922A (en) 1927-04-22 1927-04-22 Improvements in bore-hole apparatus

Publications (1)

Publication Number Publication Date
GB269922A true GB269922A (en) 1928-02-09

Family

ID=9975087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10830/27A Expired GB269922A (en) 1927-04-22 1927-04-22 Improvements in bore-hole apparatus

Country Status (1)

Country Link
GB (1) GB269922A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1239643B (en) * 1961-09-14 1967-05-03 Soeding & Halbach J C Extension percussion drill
EP0002160A1 (en) * 1977-11-21 1979-05-30 Stenuick France Device for drilling boreholes in the soil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1239643B (en) * 1961-09-14 1967-05-03 Soeding & Halbach J C Extension percussion drill
EP0002160A1 (en) * 1977-11-21 1979-05-30 Stenuick France Device for drilling boreholes in the soil
FR2409373A1 (en) * 1977-11-21 1979-06-15 Stenuick France DEVICE FOR DRILLING HOLES IN THE SOIL, INCLUDING A PNEUMATIC HAMMER EQUIPPED WITH AN ECCENTER SIZE

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