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EP0162107A1 - Trepan hybride - Google Patents

Trepan hybride

Info

Publication number
EP0162107A1
EP0162107A1 EP19850900310 EP85900310A EP0162107A1 EP 0162107 A1 EP0162107 A1 EP 0162107A1 EP 19850900310 EP19850900310 EP 19850900310 EP 85900310 A EP85900310 A EP 85900310A EP 0162107 A1 EP0162107 A1 EP 0162107A1
Authority
EP
European Patent Office
Prior art keywords
cutting
bit
leg
cutter cone
rock bit
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.)
Withdrawn
Application number
EP19850900310
Other languages
German (de)
English (en)
Inventor
Lloyd L. Garner
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.)
Rock Bit Industries Usa Inc
Rock Bit Ind Inc
Original Assignee
Rock Bit Industries Usa Inc
Rock Bit Ind Inc
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 Rock Bit Industries Usa Inc, Rock Bit Ind Inc filed Critical Rock Bit Industries Usa Inc
Publication of EP0162107A1 publication Critical patent/EP0162107A1/fr
Withdrawn legal-status Critical Current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
    • E21B10/08—Roller bits
    • E21B10/14—Roller bits combined with non-rolling cutters other than of leading-portion type
    • 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
    • E21B10/08—Roller bits
    • E21B10/12—Roller bits with discs cutters

Definitions

  • Rotary drill bits for rock drilling are well known in the prior -art.
  • a common type of rotary drill bit utilizes a plurality of rolling cone cutters which are mounted to the drill bit body in a manner which will allow the cutters to roll along the bottom of a wellbore when the drill bit body is rotated.
  • Such rolling cone cut ⁇ ters can be formed utilizing an integrated body of hardened steel with teeth or cutters formed about the exterior surface thereof.
  • Another type of rolling cone cutter utilizes a steel body with a plurality of tungsten carbide or similar hardened inserts that protrude from the surface of the body in the manner of small knobs. Again, as the rolling cone cutters roll on the bottom of the wellbore, the teeth or inserts apply a highly compressive load to the bottom of the wellbore and fracture that bottom.
  • the cutting action for such cutters is typically a combination of crushing action and chipping action.
  • drag bits include a set diamond cutter which includes a face which is embedded or "set" with numerous cutting
  • OMPI diamonds These cutting diamonds protrude from the surface of the bit a short distance and when the drill is rotated into the formation, they cut the formation utilizing a combination of compression and shearing action.
  • the depth of penetration utilizing a diamond drag bit is limited by the weight on the bit, the number of diamonds uti ⁇ lized and the heat dissipating limitations of the bit.
  • Hybrid rock bits which utilize combinations of drag bits and rolling cone cutters have been proposed in the prior art.
  • One such example is United States Patent No. 3,174,564, issued to E. A. Morlan.
  • the Morlan bit includes a cylindrical crown encrusted with set diamonds for cutting an annulus around a core.
  • the set diamonds in the Morlan disclosure protrude from the matrix a small distance in a conventional manner.
  • a plurality of rolling cone cutters with carbide inserts are mounted in special recesses around the cylindrical crown for cutting an outer annulus of a considerably greater area than the inner annulus cut by the diamonds ' .
  • the set diamonds are used for their fine abrasive action in trimming the core and thereby minimizing breakage. Most of the cutting utilizing this bit is accomplished uti ⁇ lizing the rolling cone cutters.
  • the Allen hybrid rock bit includes two rolling cone cutters and a single extended drag bit.
  • the Allen hybrid bit utilizes the single drag bit with appropriately placed diamond cutter elements to remove the high points or ridges remaining in the formation on the bottom of the wellbore which are typically created by the action of rolling cone cutters. This is necessary due to the tendency of rolling teeth on each cone cutter to "track" in the bottom of the borehole and thus create ridges between the cutting area of each group of teeth.
  • Various other modifications of a hybrid rock bit design which combines a diamond drag bit with a rolling cone cutter are disclosed in United States Patent No. 4,006,788, issued to Lloyd L. Garner; United States Patent No.
  • Each of the aforementioned known hybrid rock bits which includes diamond drag bit cutters is particularly sensitive to overloading and sudden vertical movement of the drill bit which can shatter or fracture the diamond cutters. While diamond cutting tools are extremely hard and can handle abrasive wear for long periods of time, they are also exceedingly susceptible to fracture or breakage when subjected to these sudden impacts.
  • the hybrid rock bit of the present invention includes at least one cutter cone leg which supports at least one disk cutter cone.
  • Each disk cutter cone includes a plurality of spaced apart cutting disk edges which extend continuously around the periphery of the cone.
  • At least one drag bit leg is utilized, with the drag bit leg including a plura ⁇ lity of diamond cutting elements in one face thereof. The diamond cutting elements are arranged to contact the borehole bottom during
  • Continuous disk cutters are utilized on the cutter cone to minimize "bouncing", or vertical movement of the rock bit which can damage or fracture the diamond cutting elements.
  • Figure 1 is a perspective view of the hybrid rock bit of the present invention.
  • Figure 2 is an end view of the hybrid rock bit of Figure 1.
  • a hybrid rock bit generally designated at reference numeral 10, which includes a bit body 12 having a pin end 14 and a cutting end 16.
  • a pair of opposed roller cone legs 18 are utilized to support cutter cones 20 and 22.
  • drag bit legs 24 and 26 Disposed adjacent to cutter cones 20 and 22 in the depicted embodiment, and diametrically opposed from each other, are drag bit legs 24 and 26 which extend from bit body 12 and which serve to support diamond insert cutter blanks 28.
  • a plurality of diamond insert cutting blanks 28 are utilized and they are positioned in the face of drag bit legs 24 and 26 in a manner which will be explained in detail herein.
  • hybrid rock bit 10 also preferably includes hydraulic nozzles or openings which communicate with a central chamber within bit body 12 and which provide a channel for cutting fluid or drilling mud to be applied to the bottom of the wellbore, cooling the cutting implements and removing cuttings from the wellbore.
  • Diamond insert cutter blanks 28 are preferably fabricated from a tungsten carbide substrate with a diamond layer sintered to a face of the substrate, the diamond layer being composed of a poly-
  • cutter cones 20 and 22 do not include a plurality of teeth or carbide inserts in the manner of most well known cutter cones.
  • Cutter cones 20 and 22 each include a plura ⁇ lity of spaced apart disk edges 30 which extend continuously around the periphery thereof and which are utilized to at least partially support the weight of the drill bit and drill pipe above the bit and to shear and grind rock from the bottom of the wellbore.
  • cutter cones 20 and 22 may be deliberately skewed to enhance the shearing action of cutting disk edges 30.
  • the utilization of a continuous disk edge, as opposed to a plurality of tooth inserts has been found to enhance the usable lifetime of hybrid rock bit 10 by minimizing the bouncing or vertical movement associated with the operation of known roller cutter cones, which may subject diamond insert cutter blanks 28 to vertical stress and subsequent fractures.
  • the vertical move- ment is minimized or substantially eliminated by the utilization of continuous disk cutting edges, the probability of fractures or cracking of diamond insert cutter blanks 28 is effectively minimized, unexpectedly increasing the efficiency of the operation of hybrid rock bit 10.
  • OMPI can be utilized to remove these ridges and assure removal of detritus material from the borehole and the maximum efficient progress of rock bit 10 in the hole.
  • drag bit legs 24 and 26 may be altered to permit diamond insert cutter blanks 28 to be mounted at a point even with the extension of disk edges 30, or below or above disJc edges 30 to vary the penetration parameters of hybrid rock bit 10 in correlation with the hardness of the formation being drilled. Additionally, it is anticipated that drag bit legs 24 and 26 may be movably mounted to bit body 12 to per- mit the extension of diamond insert cutter blanks 28 to be altered in situ utilizing hydraulic or pneumatic controls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

Trépan hybride (10) comprenant au moins une jambe de cône de couteau (18) qui supporte au moins un cône de couteau à disque (20). Chaque cône de couteau à disque (20) comprend une pluralité de bords écartés de disque de coupe (30) s'étendant en continu autour de la périphérie du cône (20). On utilise au moins une jambe de trépan à lame (26), comprenant une pluralité d'éléments de diamant de coupe (28) sur une face. Les éléments de diamant de coupe (28) sont agencés de manière à entrer en contact avec le fond du trou de mine pendant l'opération de forage. Des couteaux à disques continus (30) sont utilisés sur le cône de couteau (20) pour réduire au minimum les effets de "rebond" ou le déplacement vertical du trépan (10), qui peuvent endommager ou fracturer les éléments de diamant de coupe (28).
EP19850900310 1983-11-18 1984-11-15 Trepan hybride Withdrawn EP0162107A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55329883A 1983-11-18 1983-11-18
US553298 1983-11-18

Publications (1)

Publication Number Publication Date
EP0162107A1 true EP0162107A1 (fr) 1985-11-27

Family

ID=24208893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850900310 Withdrawn EP0162107A1 (fr) 1983-11-18 1984-11-15 Trepan hybride

Country Status (4)

Country Link
EP (1) EP0162107A1 (fr)
AU (1) AU3740985A (fr)
CA (1) CA1233168A (fr)
WO (1) WO1985002223A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11248419B2 (en) 2020-02-14 2022-02-15 Halliburton Energy Services, Inc. Hybrid drill bit

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203774A (en) * 1987-04-21 1988-10-26 Cledisc Int Bv Rotary drilling device
US7845435B2 (en) * 2007-04-05 2010-12-07 Baker Hughes Incorporated Hybrid drill bit and method of drilling
US8678111B2 (en) 2007-11-16 2014-03-25 Baker Hughes Incorporated Hybrid drill bit and design method
US7819208B2 (en) 2008-07-25 2010-10-26 Baker Hughes Incorporated Dynamically stable hybrid drill bit
US9439277B2 (en) 2008-10-23 2016-09-06 Baker Hughes Incorporated Robotically applied hardfacing with pre-heat
US8450637B2 (en) 2008-10-23 2013-05-28 Baker Hughes Incorporated Apparatus for automated application of hardfacing material to drill bits
WO2010053710A2 (fr) 2008-10-29 2010-05-14 Baker Hughes Incorporated Procédé et appareil pour soudage robotique de trépans
US8459378B2 (en) 2009-05-13 2013-06-11 Baker Hughes Incorporated Hybrid drill bit
CA2773897A1 (fr) 2009-09-16 2011-03-24 Baker Hughes Incorporated Ensembles de palier en carbone de diamant polycristallin divorces externes pour trepans de forage hybrides
SA114350453B1 (ar) 2010-06-29 2015-12-20 بيكر هوغيس انكوربوريتد تروس حفر ذات خواص مضادة للتعقب
US8978786B2 (en) 2010-11-04 2015-03-17 Baker Hughes Incorporated System and method for adjusting roller cone profile on hybrid bit
EP2673451B1 (fr) 2011-02-11 2015-05-27 Baker Hughes Incorporated Système et procédé pour retenue de patte sur trépans hybrides
US9782857B2 (en) 2011-02-11 2017-10-10 Baker Hughes Incorporated Hybrid drill bit having increased service life
EP2780532B1 (fr) 2011-11-15 2020-01-08 Baker Hughes, a GE company, LLC Trépans de forage hybrides ayant une efficacité de forage accrue
CA2943799C (fr) * 2014-05-22 2019-08-13 Halliburton Energy Services, Inc. Trepan hybride pourvu de lames et de disques
CA2948648C (fr) 2014-05-23 2019-03-12 Baker Hugues Incorporated Trepan hybride avec ensemble de fraise fixe mecaniquement
US20170081919A1 (en) * 2014-06-09 2017-03-23 Halliburton Energy Services, Inc. Hybrid bit with roller cones and discs
US11428050B2 (en) 2014-10-20 2022-08-30 Baker Hughes Holdings Llc Reverse circulation hybrid bit
US10557311B2 (en) 2015-07-17 2020-02-11 Halliburton Energy Services, Inc. Hybrid drill bit with counter-rotation cutters in center
US10689911B2 (en) 2016-05-25 2020-06-23 Baker Hughes, A Ge Company, Llc Roller cone earth-boring rotary drill bits including disk heels and related systems and methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1816568A (en) * 1929-06-05 1931-07-28 Reed Roller Bit Co Drill bit
US4285409A (en) * 1979-06-28 1981-08-25 Smith International, Inc. Two cone bit with extended diamond cutters
US4408671A (en) * 1980-04-24 1983-10-11 Munson Beauford E Roller cone drill bit
US4343371A (en) * 1980-04-28 1982-08-10 Smith International, Inc. Hybrid rock bit
US4444281A (en) * 1983-03-30 1984-04-24 Reed Rock Bit Company Combination drag and roller cutter drill bit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8502223A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11248419B2 (en) 2020-02-14 2022-02-15 Halliburton Energy Services, Inc. Hybrid drill bit

Also Published As

Publication number Publication date
AU3740985A (en) 1985-06-03
CA1233168A (fr) 1988-02-23
WO1985002223A1 (fr) 1985-05-23

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19851023

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GARNER, LLOYD, L.