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GB924237A - Improvements in and relating to a device for enlarging the bottom of a bored hole - Google Patents

Improvements in and relating to a device for enlarging the bottom of a bored hole

Info

Publication number
GB924237A
GB924237A GB26298/61A GB2629861A GB924237A GB 924237 A GB924237 A GB 924237A GB 26298/61 A GB26298/61 A GB 26298/61A GB 2629861 A GB2629861 A GB 2629861A GB 924237 A GB924237 A GB 924237A
Authority
GB
United Kingdom
Prior art keywords
tools
valve
fluid
cylinder
pressure
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
GB26298/61A
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
Publication of GB924237A publication Critical patent/GB924237A/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
    • E21B10/322—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
    • E21B10/00—Drill bits
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • E21B10/66—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable
    • 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
    • E21B11/00—Other drilling tools
    • E21B11/04—Boring grabs
    • 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
    • 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
    • E21B4/02—Fluid rotary type drives
    • 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
    • E21B4/04—Electric drives
    • 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
    • E21B4/18—Anchoring or feeding in the borehole
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring

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

924,237. Boring earth &c. P.J.M.T. ALLARD. July 20, 1961 [July 26, 1960], No. 26298/61. Class 85. [Also in Group XXIX] An under-reamer comprises a body 1 adapted to be lowered into a borehole, means 3 on the body adapted to be pressed into engagement with the wall of the borehole to prevent rotation of the body, and means 6, 13, 14 to rotate the cutting tools 18 relative to the body. When the under-reamer is positioned in the borehole with the tools below a boring tube T an electric motor 7 is started to cause a pump 9 to supply hydraulic fluid to the system controlling the tools and the wall engaging means. The fluid passes through a valve 44 to cylinders 4 to urge the pads 3 into engagement with the wall. When the pressure in the cylinders exceeds a predetermined amount the fluid flows through valve 48 to drive the hydraulic motor 6 to rotate the tools. Fluid from the motor 6 passes through pipes 58, 59 to the upper end of a cylinder 5 to commence to open the tools. When the pressure in the cylinder 5 exceeds a given amount a valve 60 opens to discharge fluid to a reservoir 10. As the cutting resistance decreases the fall in pressure in the cylinder 5 permits the valve 60 to close and the tools to open further. If the pressure on the motor 6 becomes excessive a valve 50 opens so that a valve member 52b is moved to the left to discharge fluid from the upper part of the cylinder 5 through pipe 55 and to feed fluid from pipe 51 to the lower part of the cylinder 5 by the pipe 56 so that the tools commence to close until the pressure on the motor 6 falls sufficiently. When, during normal operation, the tools reach the fully-open position a switch 64 is operated to move the valve member 52b and open a valve 61 so that the tools start to close. When the tools are finally closed, a switch 66 is operated to set the valve 44 to retract the pads 3 from the wall, and the under-reamer is withdrawn from the hole. The tools may be used as a grab to remove the soil loosened during reaming.
GB26298/61A 1960-07-26 1961-07-20 Improvements in and relating to a device for enlarging the bottom of a bored hole Expired GB924237A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR834072A FR1271163A (en) 1960-07-26 1960-07-26 Device for expanding the base of a borehole

Publications (1)

Publication Number Publication Date
GB924237A true GB924237A (en) 1963-04-24

Family

ID=8736279

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26298/61A Expired GB924237A (en) 1960-07-26 1961-07-20 Improvements in and relating to a device for enlarging the bottom of a bored hole

Country Status (3)

Country Link
DE (1) DE1484393B1 (en)
FR (1) FR1271163A (en)
GB (1) GB924237A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4228862A (en) * 1977-11-15 1980-10-21 Antoine Causse Apparatus for drilling holes in the ground
US4548282A (en) * 1982-05-22 1985-10-22 Wirth Maschinen-Und Bohrgerate-Fabrik Gmbh Method for sinking boreholes
GB2176519A (en) * 1985-05-10 1986-12-31 Yitshaq Lipsker Drilling boreholes
CN109184574A (en) * 2018-11-08 2019-01-11 山东科技大学 A kind of tube filling pedestal pile construction equipment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1554730A (en) * 1975-12-29 1979-10-31 Macdonald Pneumatic Tools Apparatus for undercutting a drill hole
GB8714921D0 (en) * 1987-06-25 1987-07-29 Shell Int Research Borehole underreamer device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB596980A (en) * 1945-01-04 1948-01-15 Francisco Rodolfo Borrajo Electric drilling apparatus for earth boring
US1794490A (en) * 1927-04-25 1931-03-03 Franklin N Ropp Caisson-pit-digging machine
GB330433A (en) * 1929-07-13 1930-06-12 Matvey Alcunovitch Capeliushni Improvements in or relating to expansible boring tools for hydraulic boring appliances
FR993207A (en) * 1949-06-11 1951-10-29 Frankignoul Pieux Armes Device for drilling wells in the ground
US2743904A (en) * 1950-11-07 1956-05-01 Loren F Scott Excavating apparatus
GB748281A (en) * 1953-04-10 1956-04-25 Nat Res Dev Improvements in and relating to earth-boring tools

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4228862A (en) * 1977-11-15 1980-10-21 Antoine Causse Apparatus for drilling holes in the ground
US4548282A (en) * 1982-05-22 1985-10-22 Wirth Maschinen-Und Bohrgerate-Fabrik Gmbh Method for sinking boreholes
GB2176519A (en) * 1985-05-10 1986-12-31 Yitshaq Lipsker Drilling boreholes
CN109184574A (en) * 2018-11-08 2019-01-11 山东科技大学 A kind of tube filling pedestal pile construction equipment

Also Published As

Publication number Publication date
FR1271163A (en) 1961-09-08
DE1484393B1 (en) 1969-10-23

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