US3830319A - Drilling apparatus - Google Patents

Drilling apparatus Download PDF

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Publication number
US3830319A
US3830319A US00335105A US33510573A US3830319A US 3830319 A US3830319 A US 3830319A US 00335105 A US00335105 A US 00335105A US 33510573 A US33510573 A US 33510573A US 3830319 A US3830319 A US 3830319A
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US
United States
Prior art keywords
pipe means
pipe
inner pipe
outer pipe
flushing fluid
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 - Lifetime
Application number
US00335105A
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English (en)
Inventor
Der Wijden F Van
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.)
CONRAD-STORK BEHEER BV
Original Assignee
STORK CONRAD BV
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 STORK CONRAD BV filed Critical STORK CONRAD BV
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Publication of US3830319A publication Critical patent/US3830319A/en
Assigned to B.V. MACHINE BOUW CONTAD STORK, reassignment B.V. MACHINE BOUW CONTAD STORK, ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CONRAD STORK BEHEER B.V.
Assigned to CONRAD-STORK BEHEER B.V. reassignment CONRAD-STORK BEHEER B.V. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: CONRAD-STORK B.V.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • 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
    • E21B17/18—Pipes provided with plural fluid passages
    • 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

Definitions

  • ABSTRACT A rotary drilling apparatus in which drilled cores are rface by means of a a rotatable bottom end re formed he cutting mm avmwamwmaa aiinemm ilrww m OBICWO o srmom o tall C n n pf C hnt f e ..l ge toc ohh npe ce e D.. n lff fnPide ea n t pnlwwnr. l 065!
  • the pipe string and an outer pipe from the surface and surrounds t pipe or pipe string extends o inner pipe or pipe string an the outer pipe pipe.
  • the invention relates to a rotary drilling apparatus for continuously coring according to the so-called counterflush system, in which cores of the drilled formation are continuously carried to the surface by means of a flushing fluid, said device comprising: an inner pipe adapted to be rotated by driving means and provided near its bottom end with a cutting member, openings extending through the wall of the inner pipe near this cutting member, said pipe being connected at its top end with a stationary discharge tube for flushing fluid carrying the cores; one or more extension pipes adapted to be coupled to said inner pipe for forming a pipe string; and an outer pipe or pipestring extending from the surface and surrounding said inner pipe or one or more extending pipes with clearance, said outer pipe communicating with a supply of flushing fluid.
  • the flushing fluid is pumped downwardly through the annular space formed in the upper portion between the outer pipe and the inner pipe and further downwardly between the wall of the borehole and the inner pipe,after which the flushing fluid flows through the openings in the wall of the inner pipe into said pipe, and through said inner pipe upwardly while entraining the drilled cores, so that said cores can subsequently be collected at the surface.
  • the outer pipe of the apparatus had to be cemented in the ground in order to prevent the outer pipe from being pushed out of the borehole due to the pressure of the flushing fluid, and also to avoid direct escape of the flushing fluid between the outer wall of the outer pipe and the wall of the borehole towards the surface, since the upper formations often consist of unconsolidated material. Therefore, the length of the outer pipe is determined by the depth at which the first solid formations occur, at which formations the risk of a direct escape of flushing fluid past the wall of the borehole is eliminated.
  • the prior art apparatus is satisfactory for continuous coring drilling operations on the mainland, but it is not suitable for offshore drilling operations, because then cementing the outer pipe, e.g., in the bottom of the sea gives rise to insuperable difficulties.
  • an object of the invention is to provide a drilling apparatus of the kind referred to which is also suitable for continuous coring drilling operations at offshore locations.
  • the outer pipe or pipe string extends over the full length of the inner pipe or inner pipe string and is drivingly connected with the driving means, the inner pipe being connected with the outer pipe, so that the inner pipe is rotated with the latter upon rotation thereof, a seal being provided between the two pipes near the lower end below the openings in the inner pipe.
  • a flushing fluid of low viscosity e.g., water
  • a flushing fluid of low viscosity e.g., water
  • two sets of spray openings are provided, the openings of one set being inclined downwardly and those of the other set being inclined upwardly.
  • the cutting member only consists of a number of knives provided at the inner wall of the inner pipe which at the most protrude somewhat in radial direction from said inner wall.
  • a sleeve extending beyond the terminal end of said pipe in which sleeve the lower end of a piece of tubing communicating with the discharge of flushing fluid or of an extension pipe can be received, a ring-shaped apertured member surrounding said sleeve, andprotruding radially from the sleeve being provided, while the outer pipe near its upper end is provided with an inner thread, below which a shoulder is formed on the inner wall projecting from said wall so that the ring-shaped member can bear on this shoulder and can be clamped between said shoulder and the lower end surface of a piece of tubing connected with the driving means or of an extension pipe, threadedly engaged by an outer thread formed in the lower end portion of said piece and extension pipe, with the upper end of said outer pipe.
  • the inner pipe may be made of a synthetic material, for instance polyvinylchloride.
  • the ring-shaped member consists of two 5 segments retained in abutting relationship in a groove formed in the sleeve by a resilient band. Then the apertures in the ring-shaped member may be formed by spaced recesses extending from the inner periphery of said ring.
  • the inner pipe or the inner pipe string is coupled at its upper end to an inner length of tubing, which is shiftably disposed in an outer length of tubing connected with the driving means, the lower end of the inner pipe being provided with a set of ribs extending longitudinally on the inner wall of the pipe and adapted to be engaged by longitudinal ribs at the inner wall of the outer pipe during rotation thereof.
  • FIG. 1 is a vertical section of a drilling apparatus according to the invention, the inner pipe being stationary in the outer pipe;
  • FIG. 2 is a vertical section on a larger scale of the connection between the inner pipe and the outer pipe;
  • FIG. 3 is a vertical section on a larger scale of the connection between the inner pipe and the outer pipe in a second embodiment of the invention
  • FIG. 4 is a cross section taken along line IVIV in FIG. 3;
  • FIG. 5 shows the upper part of the second embodiment and FIG. 6 illustrates another embodiment of the lower part of the inner pipe.
  • the drilling apparatus comprises a drilling head 1, which is vertically movable by any suitable means (not shown).
  • Said head comprises a housing 2, in which two worms 3 connected with driving means are accomodated, said worms being in meshing engagement with a worm-wheel 4 mounted on a sleeve 5 supported by roller bearings, so that sleeve 5 is rotated by the worm-wheel and the worms.
  • Above the casing 2 and secured thereto is a connecting piece 6, which by means of a curved length of tube 7 may be connected with a pump for a flushing fluid.
  • Connecting piece 6 is also connected to a member 8 having a curved length of tube 9 for discharging the flushing fluid and the cores carried therewith so that the cores can be collected.
  • the length of pipe 11 is connected-with the outer pipe 13 by means of a screwthread.
  • the inner connecting tube 12 is connected with the inner pipe 14 in the manner illustrated more in detail in FIG. 2.
  • a member 17 is secured, which is provided with nozzles 15 and 16 which are inclined downwardly and upwardly respectively.
  • Member 17 carries a cutting member 18 which may be provided with cutting elements 19.
  • Connecting piece 8 may be provided with an aperture 21 closed by a closure device 20, which is adapted to be opened.
  • Aperture 21 allows lowering into the borehole through pipes 12 and 14 a special tool, such as a corer for taking samples.
  • outer pipe 13 is rotated by the worm gear 3, said outer pipe 13 carrying the inner pipe 14 therewith, so that both pipes will be rotated.
  • the flushing fluid is pumped through connecting piece 6 into the annular space between the outer pipe 13 and the inner pipe 14.
  • the fluid then flows through the spray openings 15 and 16 into the inner pipe 14 and through this pipe upwardly and leaves the drilling apparatus through connecting piece 8.
  • the cores drilled by the cutting member 18 are carried by the upwardly flowing flushing fluid, and can be collected after the flushing fluid is discharged through the length of tube 9.
  • FIG. 2 shows in more detail the connection between the inner connecting pipe 12 and the inner pipe 14 or the connection between the inner pipe 14 and an extension inner pipe or the connection between two extension inner pipes.
  • a sleeve 22 is provided around the upper end of the inner pipe 14, said sleeve extending beyond the terminal end of said pipe 14, so that the lower end of the inner pipe 12 can be inserted in the protruding part of sleeve 22 until the lower end of the pipe 12 abuts the upper end of the pipe 14.
  • a ringshaped member 23 is received by sleeve 22, said ring 23 consisting of two segments, which are retained against each other by means of a resilient band 24 disposed in a recess formed in the outer peripheral surface of the sleeve 22.
  • a number of spaced recesses 25 are formed in the inner peripheral surface of the ring 23 so that after mounting the ring around the sleeve 22, there are continuous apertures in the ring.
  • the ring 23 is clamped between a shoulder 26 formed on the inner wall of the outer pipe 13 and the lower terminal end of pipe 11, which is connected with the outer pipe 13 by means of an outer screw thread formed on pipe 11 threadedly engaging an inner screw thread formed on pipe 13.
  • the inner pipes are made of a synthetic material, such as polyvinylchloride.
  • FIGS. 3 and 4 show a second embodiment of the dril ling apparatus according to the invention.
  • the inner pipe 27 can be reciprocated inside the outer pipe 28 in order to vary the distance between the spray openings and the cutting member 30. It is also possible to draw the inner pipe 27 completely out the outer pipe 28 and to replace the member having the spray openings by another member, for instance by the member shown in FIG. 3 in which the spray openings 29 are directed outwardly, so that if desired the apparatus can be operated not according to the counterflush system but according to the system in which the flushing fluid is pumped downwardly through the inner pipe and flows through the annular space between the inner and the outer pipe to the surface.
  • the inner pipes are coupled to each other by means of a conventional screw connection 31, while the outer pipes are connected by means of a socket 32.
  • the inner pipe 27 has protruding ribs 33 formed on its outer surface and the outer pipe 34 has a set of protruding ribs 34 formed on its inner surface, so that upon rotation of the outer pipe the ribs 34 engage the ribs 33 of the inner pipe carrying pipe 27 into rotation.
  • a sealing ring 35 is mounted around the member having the spray openings, which ring 35 in the outermost position of the inner pipe 27 abuts an abutment 36 formed on the inner wall of the outer pipe 28.
  • the upper part of the inner pipe 27 is connected by means of a connecting member 37 (FIG. 5) with a hollow shaft 38 extending through the gland 39 and being connected with the flushing head 40.
  • a stationary discharge pipe 41 is mounted and head 40 is suspended on a device (not shown) by means of a hook 42 attached to the head so that said head and inner pipe can be reciprocated and the distance between the spray openings and the cutting member can be varied.
  • the drilling head shown in FIG. 5 is similar to the head shown in FIG. 1 with the exception of the connecting member 43, which is longer than the member 6 in FIG. 1. Therefore, like elements in FIG. 5 are denoted by like reference characters.
  • FIG. 6 shows another embodiment of the lower portion 44 of the inner pipe.
  • I-Iere vertically extending knives 45 are provided which protrude axially as well as radially.
  • Spray openings 46 directed downwardly are arranged between the knives.
  • Upwardly directed spray openings 47 are provided in a cylindrical part of the member 44.
  • Protruding members 48 are mounted on the outer wall of the lower portion 44 in front of the,
  • trough-shaped recess is formed so that part of the flushing fluid flowing downwardly is deflected towards and through the spray openings 47 as indicated by the arrows.
  • a rotary drilling apparatus for continuous coring according to the counterflush system, in which cores of the drilled formation are continuously transported to the surface by means of a flushing fluid
  • said apparatus comprising: an inner pipe means having upper and lower ends, an outer pipe means having upper and lower ends, a driving means for rotating said outer pipe means, a cutting member connected to said lower end of the inner pipe means at the inner surface thereof, said inner pipe means having a wall with spray openings extending through said wall, near said cutting member, at least one extension pipe coupled to said inner pipe means at the upper end thereof for forming a pipe string, a stationary discharge tube connected to said extension pipe at the upper end thereof for receiving flushing fluid carrying the cores, said outer pipe means extending from the ground surface and surrounding said inner pipe means and extension pipe with clearance, said outer pipe means communicating with a supply of flushing fluid, said outer pipe means being connected to said driving means, said inner pipe means being connected with said outer pipe means so that the inner pipe means is carried into rotation by the outer pipe means upon rotation thereof, a seal between the two
  • said ringshaped member comprises two segments supported in abutting relationship in a groove provided in said sleeve, and a resilient band extending around said segments to hold the same in said groove.
  • said cutting member comprises a plurality of knives mounted at the inner wall of the inner pipe means and protruding in radial direction.
  • a rotary drilling apparatus for continuous coring according to the counterflush system, in which cores of the drilled formation are continuously transported to the surface by means of a flushing fluid
  • said apparatus comprising: an inner pipe means having upper and lower ends, an outer pipe means having upper and lower ends, a driving means for rotating said outer pipe means, a cutting member connected to said lower end of the inner pipe at the inner surface thereof, said inner pipe means having a wall with spray openings extending through said wall near said cutting member, at least one extension pipe coupled to said inner pipe means at the upper end thereof for forming a pipe string, a stationary discharge tube connected to said extension pipe at the upper end thereof for receiving flushing fluid carrying the cores, said outer pipe means extending from the ground surface and surrounding said inner pipe means and extension pipe with clearance, said outer pipe means communicating with a supply of flushing fluid, said outer pipe means being connected to said driving means, said inner pipe means being connected with said outer pipe means so that the inner pipe means is carried into rotation by the outer pipe means upon rotation thereof, a seal between the two pipe means
  • said cutting member comprises a plurality of knives mounted at the inner wall of the inner pipe means and protruding in radial direction.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Joints Allowing Movement (AREA)
US00335105A 1972-05-16 1973-02-23 Drilling apparatus Expired - Lifetime US3830319A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7206595A NL7206595A (fr) 1972-05-16 1972-05-16

Publications (1)

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US3830319A true US3830319A (en) 1974-08-20

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ID=19816050

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US00335105A Expired - Lifetime US3830319A (en) 1972-05-16 1973-02-23 Drilling apparatus

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Country Link
US (1) US3830319A (fr)
BE (1) BE795272A (fr)
DE (1) DE2306462B2 (fr)
NL (1) NL7206595A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941196A (en) * 1973-08-29 1976-03-02 Bakerdrill, Inc. Percussive air hammer and core bit apparatus
US5713423A (en) * 1992-07-24 1998-02-03 The Charles Machine Works, Inc. Drill pipe
US20030150610A1 (en) * 2000-05-17 2003-08-14 Bernhard Ebner Device for sealing a drill hole and for discharging drillings or stripped extraction material
US20050284664A1 (en) * 2003-11-13 2005-12-29 Bill Riel Dual wall drill string assembly
NL1035635C2 (nl) * 2008-06-26 2009-12-29 Conrad Trading B V Inrichting voor het roterend boren van een buis in een onder water gelegen bodem.
US20100300720A1 (en) * 2001-07-23 2010-12-02 Ruhrpumpen Gmbh Drive device for a boring bar
CN103410450A (zh) * 2013-08-13 2013-11-27 镇江安达煤矿专用设备有限公司 双管式钻杆
WO2015010463A1 (fr) * 2013-07-26 2015-01-29 中国矿业大学 Tige de forage d'ancrage et anti-bloquante pour un plancher de mine de charbon
RU2544688C2 (ru) * 2014-03-28 2015-03-20 Олег Сергеевич Николаев Стыковочный узел многоканальных трубопроводов
WO2016011368A1 (fr) * 2014-07-18 2016-01-21 Bly Ip Inc. Tige de forage présentant des parties faisant saillie vers l'intérieur

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657016A (en) * 1950-01-20 1953-10-27 Donovan B Grable Fluid circulation head for drill strings
US3077358A (en) * 1958-09-18 1963-02-12 Modiano Dr Ing Well-drilling pipe
US3078931A (en) * 1960-12-08 1963-02-26 David G Moore Free corer
US3096103A (en) * 1959-10-13 1963-07-02 Armco Steel Corp Dual passage rotary swivel
US3155179A (en) * 1961-08-04 1964-11-03 Kennecott Copper Corp Dual-tube drill string for sample drilling
US3208539A (en) * 1958-09-17 1965-09-28 Walker Neer Mfg Co Apparatus for drilling wells
US3338322A (en) * 1965-02-16 1967-08-29 Homer I Henderson Earth boring drill
US3473617A (en) * 1968-03-20 1969-10-21 Wayland D Elenburg Method and apparatus for drilling and coring
US3664441A (en) * 1970-06-01 1972-05-23 Carey Machine And Supply Co Concentric pipe drill string

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657016A (en) * 1950-01-20 1953-10-27 Donovan B Grable Fluid circulation head for drill strings
US3208539A (en) * 1958-09-17 1965-09-28 Walker Neer Mfg Co Apparatus for drilling wells
US3077358A (en) * 1958-09-18 1963-02-12 Modiano Dr Ing Well-drilling pipe
US3096103A (en) * 1959-10-13 1963-07-02 Armco Steel Corp Dual passage rotary swivel
US3078931A (en) * 1960-12-08 1963-02-26 David G Moore Free corer
US3155179A (en) * 1961-08-04 1964-11-03 Kennecott Copper Corp Dual-tube drill string for sample drilling
US3338322A (en) * 1965-02-16 1967-08-29 Homer I Henderson Earth boring drill
US3473617A (en) * 1968-03-20 1969-10-21 Wayland D Elenburg Method and apparatus for drilling and coring
US3664441A (en) * 1970-06-01 1972-05-23 Carey Machine And Supply Co Concentric pipe drill string

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941196A (en) * 1973-08-29 1976-03-02 Bakerdrill, Inc. Percussive air hammer and core bit apparatus
US5713423A (en) * 1992-07-24 1998-02-03 The Charles Machine Works, Inc. Drill pipe
US7011167B2 (en) * 2000-05-17 2006-03-14 VOEST-ALPINE Bergetechnik Gesellschaft m.b.H. Device for sealing a drill hole and for discharging drillings or stripped extraction material
US20030150610A1 (en) * 2000-05-17 2003-08-14 Bernhard Ebner Device for sealing a drill hole and for discharging drillings or stripped extraction material
US20100300720A1 (en) * 2001-07-23 2010-12-02 Ruhrpumpen Gmbh Drive device for a boring bar
US8439127B2 (en) * 2001-07-23 2013-05-14 Ruhrpumpen Gmbh Drive device for a boring bar
US7134514B2 (en) * 2003-11-13 2006-11-14 American Augers, Inc. Dual wall drill string assembly
US20050284664A1 (en) * 2003-11-13 2005-12-29 Bill Riel Dual wall drill string assembly
NL1035635C2 (nl) * 2008-06-26 2009-12-29 Conrad Trading B V Inrichting voor het roterend boren van een buis in een onder water gelegen bodem.
WO2009157762A1 (fr) * 2008-06-26 2009-12-30 Conrad Trading B.V. Dispositif de forage rotatif comprenant un tube placé dans un fond situé sous l’eau
WO2015010463A1 (fr) * 2013-07-26 2015-01-29 中国矿业大学 Tige de forage d'ancrage et anti-bloquante pour un plancher de mine de charbon
CN103410450A (zh) * 2013-08-13 2013-11-27 镇江安达煤矿专用设备有限公司 双管式钻杆
RU2544688C2 (ru) * 2014-03-28 2015-03-20 Олег Сергеевич Николаев Стыковочный узел многоканальных трубопроводов
WO2016011368A1 (fr) * 2014-07-18 2016-01-21 Bly Ip Inc. Tige de forage présentant des parties faisant saillie vers l'intérieur
US9932775B2 (en) 2014-07-18 2018-04-03 Bly Ip Inc. Drill rod having internally projecting portions
RU2651650C1 (ru) * 2014-07-18 2018-04-23 БЛАЙ АйПи ИНК. Бурильная штанга, содержащая участки, выступающие во внутреннем направлении
US10024117B2 (en) 2014-07-18 2018-07-17 Bly Ip Inc. Drill rod having internally projecting portions
US10626681B2 (en) 2014-07-18 2020-04-21 Bly Ip Inc. Drill rod having internally projecting portions

Also Published As

Publication number Publication date
BE795272A (fr) 1973-08-09
DE2365455A1 (de) 1975-01-30
DE2306462A1 (de) 1974-01-10
NL7206595A (fr) 1973-11-20
DE2365455B2 (de) 1976-01-15
DE2306462B2 (de) 1975-03-20

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Legal Events

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AS Assignment

Owner name: CONRAD-STORK BEHEER B.V.

Free format text: CHANGE OF NAME;ASSIGNOR:CONRAD-STORK B.V.;REEL/FRAME:003942/0520

Effective date: 19811228

Owner name: B.V. MACHINE BOUW CONTAD STORK,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CONRAD STORK BEHEER B.V.;REEL/FRAME:003942/0523

Effective date: 19811221

Owner name: CONRAD-STORK BEHEER B.V., CALIFORNIA

Free format text: CHANGE OF NAME;ASSIGNOR:CONRAD-STORK B.V.;REEL/FRAME:003942/0520

Effective date: 19811228

Owner name: B.V. MACHINE BOUW CONTAD STORK,, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CONRAD STORK BEHEER B.V.;REEL/FRAME:003942/0523

Effective date: 19811221