US3420321A - Apparatus for drilling wells - Google Patents

Apparatus for drilling wells Download PDF

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Publication number
US3420321A
US3420321A US577201A US3420321DA US3420321A US 3420321 A US3420321 A US 3420321A US 577201 A US577201 A US 577201A US 3420321D A US3420321D A US 3420321DA US 3420321 A US3420321 A US 3420321A
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United States
Prior art keywords
drilling
string
tubular member
group
bits
Prior art date
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Expired - Lifetime
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US577201A
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English (en)
Inventor
Giuseppe Botto
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Individual
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Individual
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Publication of US3420321A publication Critical patent/US3420321A/en
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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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • 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
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes

Definitions

  • This disclosure relates to an apparatus for drilling wells under circulation of drilling mud, including a string of hollow rods allowing passage of drilling mud therethrough, a tubular member having drilling tools connected at the lower end thereof and in telescoping relation with respect to said string, cable means connected with said tubular member and extending along said string beyond said well, driving means for reciprocating said tubular member in a direction parallel to said string and cooperating with said cable means, a rotary table for imparting intermittent angular movement to said drilling tools about the axis of said string, a pump for circulating the drilling mud and having its suction pipe connected with said string of hollow rods.
  • the present invention relates to an apparatus for drilling wells or holes in general in grounds of any nature and consistency.
  • the bore hole Or well is always kept full with drilling mud or mortar muds, so that a constant direct supporting action is exerted on the walls thereof.
  • An object of the present invention is to provide an apparatus adapted to allow a quick drilling of bore holes even and particularly in hard or compact ground, such as rocks.
  • Another object of the present invention is to provide an apparatus which will allow easy to drill wells of considerable depth.
  • a further object of the present invention is to provide an apparatus which will allow to obtain wells, holes, cuttings and the like having completely vertical side walls.
  • a still further object of the present invention is to provide an apparatus of low cost.
  • an apparatus for drilling wells under circulation of drilling mud including a string of hollow rods allowing passage of drilling mud therethrough a tubular member having drilling tools connected at the lower end thereof and in telescoping relation with respect to said string, cable means connected with said tubular member and extending along said 3,420,321 Patented Jan.
  • drilling tools comprise a first group of symmetrically arranged bit members having a pin-like shape and extending radially in first radial planes transverse to each other and defining a first
  • FIG. 1 is a fragmentary sectional view of the apparatus according to the invention.
  • FIG. 2 is a bottom view of the drilling tools used
  • FIG. 3 is a sectional view taken along line A-A' of FIG. 1.
  • the bore hole being drilled is indicated at 1.
  • a working table is indicated at 2 while at 3 there is indicated a suction unit with an intake line 4 and a discharging line 5.
  • a rotary table 6 which is supported on the working table 2 can be driven to rotate both in clockwise and counterclockwise directions and to which a string of hollow rods or pipe sections 7 is connected.
  • a hollow rod or sleeve member 8 provided with outer vertical longitudinal guideways 9.
  • a drilling head 10 which is connected in a known way thereto, such as by means of a bush 13a and counter-bush 13b, and is internally provided with longitudinal seatings or grooves 11 designedto cooperate with the corresponding guideways 9.
  • the drilling head 10 has a tubular member 12 and a pin-like structure 13.
  • Said structure 13 is provided with four pin-like supporting members 14, at the ends of which hits 14a and 15a are provided integral therewith and defining a first group of bits.
  • bits 15 defining a second group of bits are provided at the lower and central portion of the head 10.
  • the bits 15a are radially arranged on each member 14.
  • the cutting edges of the drilling tools are shown by thin and parallel lines defining a wedge like shape (see FIG. 2).
  • the bits a of the first group of bits extend radially from the axis of the string in directions perpendicular to each other and the bits 15' of the second group of bits also extend radially to the axis of the string in directions perpendicular to each other and inclined with rcspect to the radial directions of the first group of bits.
  • the second group of bits extends longitudinally beyond the bits of the first group. It may also be seen from the drawing that the bits 15a and 14a form together a T-like shape in which the bit 15a corresponds to the web portion of the T-like shape and the bit 14a corresponds to the flange portion of the T-shape.
  • Two cables 16 and 17 are connected to the upper portion of the tubular member 12. Through lugs 12a and to an upper common drive cable running over pulleys 19 and 20 of a crane structure 18 and terminating in a capstan 21.
  • a decantation tank 22 is adjacent the bore hole and is in communication thereto by a return duct 23 for drilling mud.
  • the operation is as follows.
  • capstan 21 By means of capstan 21, the drilling head 10 is raised to some extent vertically along the rod 8 and then allowed to fall by gravity onto the bottom to be drilled.
  • the suction unit 3 conveys the disintegrated material up to the ground level and into a decantation tank 22 through the string of hollow rods 7, conduit 4 and conduit 5. In this tank 22, the cuttings and stones will deposit on the bottom while the drilling fluid will return to the bore hole 1 via the return duct 23.
  • tank 22 may be substituted by filtering devices, which are well known in the art, thus an illustration thereof being considered not necessary.
  • the intake conduit 4 could consist of a hose instead of the rigid duct 4 slidably and coaxially connected to the upper part of the hollow rods string 7.
  • An apparatus for drilling wells under circulation of drilling mud including a string of hollow rods allowing passage of drilling mud therethrough a tubular member having drilling tools connected at the lower end thereof and in telescoping relation with respect to said string, cable means connected with said tubular member and extending along said string beyond said well, driving means for reciprocating said tubular member in a direction parallel to said string and cooperating with said cable means, a rotary table for imparting intermittent angular movement to said drilling tools about the axis of said string, a pump for circulating the drilling mud and having its suction pipe connected with said string of hollow rods and wherein the improvement comprises a sleeve member surrounding a length of said string and rigid and coaxial therewith, said sleeve member having an outer diameter less than the inner diameter of said tubular member, cooperating longitudinal guideway means on the outer periphery of said sleeve member and on the inner periphery of said tubular member allowing a telescoping motion between said sleeve and said tub
  • said first group of bit members has bits facing the bottom of the well each of which has wedge like cutting edges defining the shape of a T with the web portion of the T extending in radial direction and the flange portion of the T peripherally arranged.

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  • 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)
  • Physical Or Chemical Processes And Apparatus (AREA)
US577201A 1966-03-26 1966-09-06 Apparatus for drilling wells Expired - Lifetime US3420321A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1604366 1966-03-26

Publications (1)

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US3420321A true US3420321A (en) 1969-01-07

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US577201A Expired - Lifetime US3420321A (en) 1966-03-26 1966-09-06 Apparatus for drilling wells

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US (1) US3420321A (es)
ES (2) ES339098A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958650A (en) * 1975-05-28 1976-05-25 The United States Of America As Represented By The Secretary Of The Interior Drilling system using weight of mud

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1562449A (en) * 1924-11-12 1925-11-24 Charles W Herrin Rotary drilling apparatus
US1709074A (en) * 1925-07-06 1929-04-16 Charles W Herrin Rotary drilling apparatus
US2911192A (en) * 1957-04-03 1959-11-03 Jersey Prod Res Co Vibratory rotary drilling method and apparatus
US3012621A (en) * 1956-11-29 1961-12-12 Soletanche Societe A Responsab Device for boring under reversed flow conditions
US3024853A (en) * 1956-10-24 1962-03-13 Herbold Wolfgang Deep boring gear including a water jet pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1562449A (en) * 1924-11-12 1925-11-24 Charles W Herrin Rotary drilling apparatus
US1709074A (en) * 1925-07-06 1929-04-16 Charles W Herrin Rotary drilling apparatus
US3024853A (en) * 1956-10-24 1962-03-13 Herbold Wolfgang Deep boring gear including a water jet pump
US3012621A (en) * 1956-11-29 1961-12-12 Soletanche Societe A Responsab Device for boring under reversed flow conditions
US2911192A (en) * 1957-04-03 1959-11-03 Jersey Prod Res Co Vibratory rotary drilling method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958650A (en) * 1975-05-28 1976-05-25 The United States Of America As Represented By The Secretary Of The Interior Drilling system using weight of mud

Also Published As

Publication number Publication date
ES352599A1 (es) 1969-07-16
ES339098A1 (es) 1968-09-01

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