US3712392A - Diamond drill assembly with bore hole support - Google Patents

Diamond drill assembly with bore hole support Download PDF

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Publication number
US3712392A
US3712392A US00100759A US3712392DA US3712392A US 3712392 A US3712392 A US 3712392A US 00100759 A US00100759 A US 00100759A US 3712392D A US3712392D A US 3712392DA US 3712392 A US3712392 A US 3712392A
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US
United States
Prior art keywords
sleeve
drill string
diameter
outside
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 - Lifetime
Application number
US00100759A
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English (en)
Inventor
Gorgendiere C Dela
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.)
Wheel Trueing Tool Company of Canada
Original Assignee
Wheel Trueing Tool Company of Canada
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 Wheel Trueing Tool Company of Canada filed Critical Wheel Trueing Tool Company of Canada
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Publication of US3712392A publication Critical patent/US3712392A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
    • 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
    • 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
    • E21B17/06—Releasing-joints, e.g. safety joints
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/10—Correction of deflected boreholes

Definitions

  • FIG. 1 shows a prior art drilling device adapted from a typical sales leaflet and shows general construction by a part elevation past section view and includes arrows showing liquid flow patterns.
  • FIG. 2 shows corresponding views of a drilling device which overcomes the disadvantage of the prior art device and again shows the cooling liquid flow pattern;
  • FIG. 3 shows a cross section illustrating in detail the assembly of a convoluted shell, core and sleeve to clarify how the flow between sleeve and core in FIG. 2 occurs; it is somewhat enlarged over the dimensions of FIG. 2.
  • FIG. 4 is a perspective view, partially broken away, of the drilling device of the present invention.
  • FIG. 1 needs little explanation.
  • the cooling liquid flows down the inside of the drill string in the inner annulus between the outside diameter 2 of the core lifter 4 and the core lifter casing 5 and the inside diameter 6 of the drill shank 8 and washes away the debris formed by the drill bit 10 and returns to the drill head by way of the annulus between the outside diameter 12 of the drill shank 8 and the surrounding rock 14.
  • This annulus is usually of the order of 0.035 radial width as mentioned above, and typical water flow is 3 to 5 gallons per minute. Pressure to achieve this flow fluctuates depending upon the material of the strata being bored. There is thus an unsupported length which, bearing in mind the additional factors of heat, vibration, inhomogeneity of the material being drilled leads to the typical deviation conditions of holes of between 5 to 10 per 100 feet for alternate hard and soft layered strata.
  • FIG. 2 illustrates that the support is achieved adjacent the drill and that the flow pattern has now been changed, both go and return flows being within the outer sleeve of the assembly.
  • This outer sleeve 16 is to all intents and purposes, supported by the rock formation which has just been drilled. It will, of course, be understood by those skilled in the art that there is what might be termed a micro-annulus between the outside diameter 18 of this sleeve 16 and the rock formation 14 being drilled. This micro-annulus is of the order of 0.002 inches radial thickness in hard rock formation and is, in practice, (I believe) filled with a stiff paste of small particles into which water is attracted by capillary action.
  • the hollow shank 8 of the prior may best be seen in the cross section of FIG. 3. However, they are also indicated on FIG. 2 by the space between the dotted line in the section of item 20 and the outer diameter 2 of the core lifting device 4.
  • This reaming ring 24 has four longitudinal grooves 26 in it; these are partly shown in the elevation and indicated again by a dotted line in the section. it is silver soldered to shell body 20.
  • the core diameter (which must be as large as possible for assay purposes) in one size is 1 1/ 16 inches and the bored hole is 1 57/64.
  • the core lifting device has an outside diameter of 1 9/32 which is just cleared by the shell inner land diameter 28 of 1.312 to 1.310 inches.
  • the bit gauge itself is 1.870 to 1.880 inches diameter but, of course, it does not cut accurately to size; that is, the hole is larger in some formations than the drill. Moreover, the size of the bit will change and does not hold gauge properly.
  • the reaming ring on the other hand cuts accurately particularly in hard rock providing it is kept sharp since it removes only a small amount of material. I prefer to use a reaming ring in which the diamonds are set oversize and lapped to 1.895 inches diameter to within very close limits, to provide excellent concentricity; the end face is a stop for the thread of bit 10.
  • the length of the sleeve is inches exclusive of the A inch long castellations 38 which mate with the driving dogs 40 of the shell 20; and in the size illustrated above the internal diameter 36 of the sleeve at 1.691 1' 0.001 inches and the outside diameter 42 of the shell 20 at 1.689 t 0.001 inches ensure proper sealing and support of the sleeve by the outer portions of the convolutions of the shell 20 beneath. In fact, I prefer to lap these parts together to avoid ovality.
  • annulus 46 After flowing upwardly within the passageways 32 the liquid sludge leaves the sleeves by ports 44 into an annulus 46; this annulus is formed by reducing the sleeve diameter to (in the example given) 1.835 so as to give an annulus of 0.030 inches wide with the bore hole diameter of 1.895; this is actually the reaming ring diameterthe actual annulus width will be about the 0.035 inches.
  • the sleeve itself may be replaced by unscrewing the shell sleeve assembly 20,16 16, 20 from the stabilizer 48 and inserting a stepped or tapered hub into the bore of the shell 20 (which at the upper end is, of course, round and does not have any channels in it) and then drawing off the sleeve by means of a screw jack acting on extensions 38 between the dogs 40 much in the manner of a gear puller.
  • the stabilizer 48 acts to brace the drill string end over a longer length than is practical for the sleeve 16 alone, and I attach it to the shell assembly by square threads 50 which are so terminated that sleeve 16 is trapped between one end of the stabilizer 48 and the lands of dogs 40 on the shell 20.
  • This stabilizer increases as shown at 52 from (to quote figures for the sizes given above) 1.835 to 1.890 inches (above the hard chrome plate) and has helical grooves 54 to allow the liquid sludge to pass round the outside of the stabilizer as it continues to flow upwardly. A small amount of it may pass over the surface but the small clearance between the bore wall and the cylindrical (of the periphery reduces vibration and whip at the drill bit.
  • the stabilizer outside diameter continues at this diameter (1.890 inches) for 4 inches length then reduces back to 1.835 to give the usual annulus. This is not shown as it is clear to those skilled in the art.
  • the stabilizer accommodates an internal square thread so that it can accommodate an outer tube; i prefer to make an adaptor outer tube like a standard tube 56 but 12 inches shorter so that my adaptor, stabilizer, shell and sleeve assembly can be substituted for a standard drill bit and outer tube.
  • a drill string assembly comprising, at the distal end an inner tube core lifter subassembly having a cylindrical outer surface;
  • a sleeve having a substantially unbroken cylindrical outer surface having an outer diameter just smaller than the hole normally cut by the reaming ring so as to inhibit return flow of cooling fluid between the bore hole and the sleeve outside surface, the cylindrical outer surface also having such a length to diameter ratio as to assist in maintaining the direction of the drill bit;
  • passageway providing means cooperating with the sleeve inner periphery and the core lifter cylindrical outer surface
  • passageway providing means having such a cross section as to cooperate with the sleeve inner periphery and the core lifter cylindrical outer surface so as to allow passage of fluid towards the drill bit and to allow separate return flow therefrom;
  • a drill string as claimed in claim 1 in which the sleeve has a reduced diameter portion upwardly of the circular outer periphery so as to provide an annulus between the reduced portion and bore hole wall, the reduced diameter portion of the sleeve having ports therethrough, and means aligning the ports with the return passageways so that returning fluid may pass upwardly around the outside of the upper portions of the outer tube.
  • a drill string as claimed in claim 4 in which the ports are slots having parallel axial sides and rounded ends so as to accept a wrench for dismantling screw threads in the assembly.
  • a drill string assembly as claimed in claim 1 wherein the passageway providing means is a member being convoluted in cross section over a major portion of its length to provide a plurality of channels each having a base and two sidewalls for the feed and return flow paths.
  • a drill string as claimed in claim 7 in which the outer diameter of the sleeve is less than two inches and wherein the outer diameter of the core lifter subassembly is greater than 1% inches.
  • a drill string assembly as claimed in claim 7 in which the sleeve has castellations at the distal end and dogs are provided adjacent the drill bit subassembly, the sides of the castellations abutting the dogs in driving relationship so that the drill bit is driven through the sleeve as well as the convoluted member.
  • a drill string assembly as claimed in claim 9 in which the castellations extend over those convolutions providing return flow passageways.

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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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US00100759A 1970-12-22 1970-12-22 Diamond drill assembly with bore hole support Expired - Lifetime US3712392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10075970A 1970-12-22 1970-12-22

Publications (1)

Publication Number Publication Date
US3712392A true US3712392A (en) 1973-01-23

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Application Number Title Priority Date Filing Date
US00100759A Expired - Lifetime US3712392A (en) 1970-12-22 1970-12-22 Diamond drill assembly with bore hole support

Country Status (7)

Country Link
US (1) US3712392A (cs)
AU (1) AU3717771A (cs)
BE (1) BE777037A (cs)
CA (1) CA941815A (cs)
DE (1) DE2161884A1 (cs)
FR (1) FR2123279B3 (cs)
GB (1) GB1346330A (cs)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833077A (en) * 1971-02-12 1974-09-03 L Lavallee Diamond drills
DE2642014A1 (de) * 1975-09-19 1977-03-31 Foraco Forage Rationnel Const Anschlusstueck fuer bohrmeissel
US4293048A (en) * 1980-01-25 1981-10-06 Smith International, Inc. Jet dual bit
US4385669A (en) * 1981-08-21 1983-05-31 Paul Knutsen Integral blade cylindrical gauge stabilizer reamer
US20050257934A1 (en) * 2003-07-10 2005-11-24 Collapsing Stabilizer Tool, Ltd. Flow through subassembly for a downhole drill string and method for making same
US20090283328A1 (en) * 2008-05-15 2009-11-19 Longyear Tm, Inc. Reamer with polycrystalline diamond compact inserts
US20120061146A1 (en) * 2010-09-13 2012-03-15 Longyear Tm, Inc. Impregnated drill bits with integrated reamers
CN104358521A (zh) * 2014-11-02 2015-02-18 郑州神利达钻采设备有限公司 一种基于水槽的矿用扩孔工具
CN104481421A (zh) * 2014-11-06 2015-04-01 中国石油天然气集团公司 过弯道钻进防卡短节
US9297410B2 (en) 2012-12-31 2016-03-29 Smith International, Inc. Bearing assembly for a drilling tool
CN106089138A (zh) * 2016-08-08 2016-11-09 吉林大学 提高松散易冲刷地层岩心采取率的单管钻具
US10329851B2 (en) 2014-12-11 2019-06-25 Halliburton Energy Services, Inc. Sub for accommodating large devices
CN113236150A (zh) * 2021-07-12 2021-08-10 东营胜蓝石油科技开发有限公司 一种液压油管用扶正器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107942A (en) * 1991-04-04 1992-04-28 Baker Hughes Incorporated Inner tube stabilizer for a corebarrel
CN112696162B (zh) * 2021-03-12 2022-07-01 东营市福利德石油科技开发有限责任公司 井下双管滑动自封工具

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3283835A (en) * 1964-05-19 1966-11-08 Exxon Production Research Co Continuous coring system
US3318398A (en) * 1964-06-30 1967-05-09 Ray F Fry Drill collar stabilizer
US3322217A (en) * 1964-12-24 1967-05-30 Cook De Orr Two piece stabilizing and reaming tool for bore holes
US3323604A (en) * 1964-08-28 1967-06-06 Homer I Henderson Coring drill
US3439757A (en) * 1968-03-12 1969-04-22 Wayland D Elenburg Drilling apparatus
US3583502A (en) * 1968-07-29 1971-06-08 Homer I Henderson Axial flow turbine drill for earth boring

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3208539A (en) * 1958-09-17 1965-09-28 Walker Neer Mfg Co Apparatus for drilling wells
US3155179A (en) * 1961-08-04 1964-11-03 Kennecott Copper Corp Dual-tube drill string for sample drilling
US3283835A (en) * 1964-05-19 1966-11-08 Exxon Production Research Co Continuous coring system
US3318398A (en) * 1964-06-30 1967-05-09 Ray F Fry Drill collar stabilizer
US3323604A (en) * 1964-08-28 1967-06-06 Homer I Henderson Coring drill
US3322217A (en) * 1964-12-24 1967-05-30 Cook De Orr Two piece stabilizing and reaming tool for bore holes
US3439757A (en) * 1968-03-12 1969-04-22 Wayland D Elenburg Drilling apparatus
US3583502A (en) * 1968-07-29 1971-06-08 Homer I Henderson Axial flow turbine drill for earth boring

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833077A (en) * 1971-02-12 1974-09-03 L Lavallee Diamond drills
DE2642014A1 (de) * 1975-09-19 1977-03-31 Foraco Forage Rationnel Const Anschlusstueck fuer bohrmeissel
US4098361A (en) * 1975-09-19 1978-07-04 Foraco Forage Rational Construction Drilling head connection for use in a reverse circulation system
US4293048A (en) * 1980-01-25 1981-10-06 Smith International, Inc. Jet dual bit
US4385669A (en) * 1981-08-21 1983-05-31 Paul Knutsen Integral blade cylindrical gauge stabilizer reamer
US20050257934A1 (en) * 2003-07-10 2005-11-24 Collapsing Stabilizer Tool, Ltd. Flow through subassembly for a downhole drill string and method for making same
US7493949B2 (en) * 2003-07-10 2009-02-24 Collapsing Stabilizer Tool, Ltd. Flow through subassembly for a downhole drill string and method for making same
US20090283328A1 (en) * 2008-05-15 2009-11-19 Longyear Tm, Inc. Reamer with polycrystalline diamond compact inserts
US8025107B2 (en) * 2008-05-15 2011-09-27 Longyear Tm, Inc. Reamer with polycrystalline diamond compact inserts
CN103097642A (zh) * 2010-09-13 2013-05-08 长年Tm公司 具有一体化扩孔器的孕镶钻头
CN103097642B (zh) * 2010-09-13 2016-08-10 长年Tm公司 具有一体化扩孔器的孕镶钻头
US8991524B2 (en) * 2010-09-13 2015-03-31 Longyear Tm, Inc. Impregnated drill bits with integrated reamers
US20120061146A1 (en) * 2010-09-13 2012-03-15 Longyear Tm, Inc. Impregnated drill bits with integrated reamers
US20150197999A1 (en) * 2010-09-13 2015-07-16 Longyear Tm, Inc. Impregnated drill bits with integrated reamers
US9234399B2 (en) * 2010-09-13 2016-01-12 Longyear Tm, Inc. Impregnated drill bits with integrated reamers
US9297410B2 (en) 2012-12-31 2016-03-29 Smith International, Inc. Bearing assembly for a drilling tool
CN104358521A (zh) * 2014-11-02 2015-02-18 郑州神利达钻采设备有限公司 一种基于水槽的矿用扩孔工具
CN104358521B (zh) * 2014-11-02 2016-08-03 郑州神利达钻采设备有限公司 一种基于水槽的矿用扩孔工具
CN104481421A (zh) * 2014-11-06 2015-04-01 中国石油天然气集团公司 过弯道钻进防卡短节
US10329851B2 (en) 2014-12-11 2019-06-25 Halliburton Energy Services, Inc. Sub for accommodating large devices
CN106089138A (zh) * 2016-08-08 2016-11-09 吉林大学 提高松散易冲刷地层岩心采取率的单管钻具
CN113236150A (zh) * 2021-07-12 2021-08-10 东营胜蓝石油科技开发有限公司 一种液压油管用扶正器
CN113236150B (zh) * 2021-07-12 2021-09-03 东营胜蓝石油科技开发有限公司 一种液压油管用扶正器

Also Published As

Publication number Publication date
DE2161884A1 (de) 1972-06-29
FR2123279B3 (cs) 1974-08-23
BE777037A (fr) 1972-04-17
CA941815A (en) 1974-02-12
GB1346330A (en) 1974-02-06
AU3717771A (en) 1973-06-28
FR2123279A3 (cs) 1972-09-08

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