[go: up one dir, main page]

WO2001071152A1 - Segment utilise pour un foret de sondeuse a carrotes et procede de fabrication - Google Patents

Segment utilise pour un foret de sondeuse a carrotes et procede de fabrication Download PDF

Info

Publication number
WO2001071152A1
WO2001071152A1 PCT/AU2001/000309 AU0100309W WO0171152A1 WO 2001071152 A1 WO2001071152 A1 WO 2001071152A1 AU 0100309 W AU0100309 W AU 0100309W WO 0171152 A1 WO0171152 A1 WO 0171152A1
Authority
WO
WIPO (PCT)
Prior art keywords
matrix
members
segment
cylinder
recess
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.)
Ceased
Application number
PCT/AU2001/000309
Other languages
English (en)
Inventor
Gavin Thomas Mcleod
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.)
DHT Technologies Ltd
Original Assignee
DHT Technologies Ltd
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 DHT Technologies Ltd filed Critical DHT Technologies Ltd
Priority to AU2001242089A priority Critical patent/AU2001242089A1/en
Priority to CA002403530A priority patent/CA2403530A1/fr
Publication of WO2001071152A1 publication Critical patent/WO2001071152A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
    • 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
    • E21B10/02—Core bits
    • 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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

Definitions

  • the present invention relates to a segment for a core drill bit and to a method of manufacture of the segment.
  • the present Applicant is the proprietor of the RETRACTABIT retractable drill bit system.
  • This system is the subject of numerous patents including US Patent Nos 5,662,182; US 5,954,146; US 5,813,481; US 5,743,344 and US 5,785,133.
  • the system incorporates a core drill bit composed of a plurality of separate segments that can be replaced in situ without the need to pull an associated drill string.
  • Each bit segment is in the form of an elongated member having an upper end configured to engage a seat in a drive sub, opposite first and second sides which are configured to cooperate with adjacent surfaces of the drive sub and a bit locking sleeve, and a lower end to which is fixed a matrix.
  • the matrix is of conventional form comprising a combination of metal powders and diamonds which are bonded to the lower end of the members by application of heat and pressure.
  • the area of matrix is reduced to about 60% of a standard wire line core bit of the same diameter. Therefore, in order to achieve the same penetration rates as with a standard wire line core less weight is required on the RETRACTABIT drill bit. Nevertheless, in practice it has been found that at times drill rig operators apply the bit weight for standard wire line core bits which, for an NQ size bit is in the order of 1350 - 2000 kg and, for a HQ size bit is between 1800 - 3600 kg.
  • the ideal weight applied to the corresponding sized RETRACTABIT drill bits is 810 - 1680 kg; and 1080 - 2160 kg respectively.
  • the RETRACTABIT core bit segment is composed of individual members having a matrix bonded to a lower end thereof, it is thought that the bond strength of the matrix to each member may be less than the bond strength of the matrix to the conventional one piece cylindrical core bit.
  • the RETRACTABIT core bit can be manufactured in one of two ways. The first involves providing a cylindrical blank, bonding the matrix to one end of the blank in accordance with the technique used for the manufacture of standard core bits and then cutting the blank with the bonded matrix into individual segments and machining the surfaces of the segments. For an NQ size bit this method can produce four or more individual segments per blank.
  • An alternate method is to manufacture the members that compose the segments individually and then bond the matrix to them in say groups of four or five.
  • This group size is largely dependent upon the standard size moulds and jigs used for applying the matrix.
  • this method involves the method of relatively complex jigs in order to hold the individual members.
  • a segment for a core drill bit comprising at least: an elongated member having an upper end, a lower end, a front side and an opposite second side; and a matrix attached to said lower end and extending toward said upper end along the first and second sides of the member.
  • the lower end of the member is provided with a lip turned upwardly to extend in front of the first side of the member to define a recess for seating a lower edge of a drive sub and where in said matrix extends up said lip on the outside of said recess.
  • said matrix includes a first side on the first side of the member and an opposite second side on the second side of the member and where for a lower portion of the matrix the first and second sides of the matrix are substantially parallel to each other and for an upper portion of the matrix the first and second sides of the matrix converge toward the first and second sides respectively of the member.
  • the first side of the matrix converges so as to meet an upper edge of the lip.
  • the second side of the matrix converges toward the second side of the member at a first location above a trough of the recess.
  • the matrix includes gauging means on the second side for cutting an outer surface, said gauging means disposed between said trough and said first location.
  • the first side of the matrix commences to converge toward the first side of the member at a point above the lower end of the member.
  • a method of manufacturing a bit segment for a core drill bit including the steps of: fo ⁇ ning a plurality of side by side members with mutually adjacent members joined by integrally formed webs, the members juxtaposed to form a cylinder like structure, each member having an upper end, a lower end, a first side and an opposite second side, with the cylinder like structure having a lower end defined by the lower ends of the members, and an upper end defined by the respective upper ends of the members; forming a matrix at the lower end of the cylinder like structure; configuring the matrix so that it extends across the lower end of the cylinder like structure and up the first and second sides of the members toward the upper ends of the members; and fragmenting said cylinder like structure . into separate segments each of which comprises a member with matrix attached at its lower end, the matrix extending toward the upper end of the member along the first and second
  • the method includes, for an NQ size core drill bit, forming said cylinder like structure with six side by side members.
  • Figure 1 is a side view of a core drill bit segment in accordance with an embodiment of this invention
  • Figure 2 is a bottom view of the segment shown in Figure 1 ;
  • Figure 3 is a perspective view of a blank used in the manufacture of the segment shown in Figure 1;
  • Figure 4 is a front view of the blank shown in Figure 3;
  • Figure 5 is a longitudinal section view of the blank shown in Figures 3 and 4;
  • Figure 6 is a bottom view of the blank
  • Figure 7 is a top view of the blank
  • Figure 8 is a section view of a core drill bit segment loaded into a drive sub
  • Figure 9 is an enlarged view of detail A of Figure 8.
  • Figures I and 2 depict a core drill bit segment 10 in accordance with an embodiment of the present invention.
  • the segment 10 comprises an elongated member 12 having an upper end 14, a lower end 16, first side 18 and opposite second side 20. Attached to the lower end 16 is matrix 22.
  • the matrix 22 is of conventional opposition and includes a combination of metallic powders and diamonds that are in effect fused to the lower end 16 by application of heat and pressure. As is most apparent from Figure 1, the matrix 22, while depending from the lower end 16 also extends upwardly toward the upper end 14 along the first and second side 18, 20 of the member 12.
  • the lower end 16 of the member 12 is provided with a lip 24 that is turned upwardly to extend in front of the first side 18 to define a recess 26 for seating a lower edge of a drive sub 25 (shown in Figures 8 and 9). It will be noted that the matrix 22 extends along the lip 24 on the outside of the recess 26.
  • the matrix 22 has a first side 28 on the first side 18 of the member 12, an opposite side 30 on the second side 20 of the member 12, and a bottom planar side 32 extending transversely to and joining at opposite edges the first and second sides 28 and 30.
  • the first and second sides 28, 30 are substantially parallel to each other. However, for an upper portion of the matrix, the surfaces 28 and 30 converge toward the first and second sides 18, 20 respectively of the member 12.
  • the point of convergence is, in this embodiment, different for the opposite surfaces 28 and 30 of the matrix.
  • the surface 28 commences to converge toward the side 18 at a point 34 that is located above the lower end 16 of the member but lower than trough 36 of the recess 26.
  • the surface 28 converges so as to meet upper edge 38 of the lip 24.
  • Surface 30 commences to converge toward side 20 at a point 40.
  • the point 40 is located above the trough 36 (and thus above point 34) and in approximate alignment with the upper edge 38 of lip 24.
  • Gauge cutting means such as diamonds or tungsten carbide pieces/buttons 41 are bonded to surface 30 in a region between the immediate vicinity of trough 36 and point 40.
  • the gauge cutting means cut the gauge or outer diameter of the core sample.
  • Figures 8 and 9 depict a segment 10 loaded or coupled to a drive sub 25.
  • the drive sub 25 is provided with a tapered region 27 in the vicinity of its lowest axial end 29.
  • the taper 27 is configured so that the outer diameter of the drive sub 25 decreased in the direction toward its lower edge 29.
  • the recess 26 is configured so that it does not match the configuration of the taper 27. More specifically, the recess 26 is deliberately mismatched to the taper 27 in a manner so as to encourage pivoting of the segment 10 about the bottom of the trough 36 in a direction away from an axis of the drive sub 24 as indicated by arrow P.
  • any pivotal motion of the lower end of the member 12 and the matrix 22 will be about the trough 36 in a direction away from the central axis of the drive sub 25. Due to the location of the gauge stones 41 such motion results in the gauge stones 41 travelling along an arcuate path displacing them initially in a direction toward the longitudinal axis of drive sub 25 and then away from that axis. In terms of the gauge of the core cut this results in an initial minor reduction in the gauge of the core and a similar increase in the gauge. This variation in the gauge is in the order of 0.5 mm.
  • the initial step in manufacturing the bit segment 10 is to form a cylinder like structure or blank 42.
  • the blank 42 is composed of a plurality (in this instance six) side by side members 12a - 12f (hereinafter referred to in general as members 12(i) where mutually adjacent members 12(i) are joined by integrally formed webs 44.
  • the members 12(i) are of identical shape and orientation and are aligned so that their upper ends 14 and lower ends 16 lie in respective common spaced apart horizontal planes.
  • the blank 42 has an upper end 46 defined by the upper ends 14 of the members 12(i) and a lower end 48 defined by the lower ends 16 of the members 12(i).
  • the blank 42 could in theory be made by moulding, however it is preferred that the blank 42 be made by machining a cylindrical tube to define the individual members 12(i) and adjoining webs 44.
  • the next stage in the manufacture is to form the matrix 22 together with the gauge cutting means 41 at the lower end 48 of the blank 42.
  • the matrix is configured so that it extends across the lower end 48 of the blank 42 and up the first and second sides 18, 20 respectively of each of the members 12i.
  • a tang can be provided at the bottom end 16 of the member 12 to increase the bonding surface area for the matrix 22.
  • the shape and configuration of the webs 44 adjoining adjacent members 12(i) in the blank 42 can be made of any desired shape and configuration.

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)
  • Drilling Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

L'invention concerne un segment de foret de sondeuse à carottes (10) comprenant un élément allongé (12) possédant une extrémité supérieure (14), une extrémité inférieure (16), un premier côté (18) et un second côté opposé (20). Une matrice (22) est fixée à l'extrémité inférieure (16). Ladite matrice (22), tout en dépendant de l'extrémité inférieure (16) est également orientée vers le haut en direction de l'extrémité supérieure (14) le long du premier et du second côtés (18, 20) de l'élément allongé (12). L'extrémité inférieure (16) est dotée d'un bord (24) tourné vers le haut, face au premier côté (18) et définissant un évidement (26), qui permet de recevoir le bord inférieur d'un raccord de tête (25).
PCT/AU2001/000309 2000-03-21 2001-03-20 Segment utilise pour un foret de sondeuse a carrotes et procede de fabrication Ceased WO2001071152A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001242089A AU2001242089A1 (en) 2000-03-21 2001-03-20 Segment for a core drill bit and method of manufacture
CA002403530A CA2403530A1 (fr) 2000-03-21 2001-03-20 Segment utilise pour un foret de sondeuse a carrotes et procede de fabrication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPQ6399 2000-03-21
AUPQ6399A AUPQ639900A0 (en) 2000-03-21 2000-03-21 Segment for a core drill bit and method of manufacture

Publications (1)

Publication Number Publication Date
WO2001071152A1 true WO2001071152A1 (fr) 2001-09-27

Family

ID=3820496

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2001/000309 Ceased WO2001071152A1 (fr) 2000-03-21 2001-03-20 Segment utilise pour un foret de sondeuse a carrotes et procede de fabrication

Country Status (5)

Country Link
US (1) US20030029643A1 (fr)
AU (1) AUPQ639900A0 (fr)
CA (1) CA2403530A1 (fr)
WO (1) WO2001071152A1 (fr)
ZA (1) ZA200207534B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102782243A (zh) * 2009-12-15 2012-11-14 长年Tm公司 具有轴向渐缩水道的钻头

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2516311C2 (ru) * 2012-05-14 2014-05-20 Открытое акционерное общество "Научно-производственное предприятие "Бурсервис" Устройство для разделения и фиксации керна при разборке керноотборного снаряда
CN116575864A (zh) * 2023-06-12 2023-08-11 湖南志飞建设有限公司 一种带有快速安拆结构的钻头
CN116539357B (zh) * 2023-06-27 2024-01-05 湖南省建筑科学研究院有限责任公司 一种全自动钻芯和直拔一体机及其检测方法
CN120042461B (zh) * 2025-03-18 2026-01-09 中煤科工西安研究院(集团)有限公司 一种用于坑道定向钻进的定点取芯钻具、取芯钻头及工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU791906A1 (ru) * 1976-09-14 1980-12-30 Джезказганский Ордена Ленина Горно-Металлургический Комбинат Им. К.И.Сатпаева Буровой снар д
US4760888A (en) * 1986-04-01 1988-08-02 Tone Boring Company Limited Drill bit for core boring
SU1654513A1 (ru) * 1988-10-28 1991-06-07 Всесоюзный Научно-Исследовательский Институт Экономики Минерального Сырья И Геологоразведочных Работ Коронка дл бурени с непрерывным выносом керна
WO1995034740A1 (fr) * 1994-06-10 1995-12-21 Ilomaeki Valto Appareil de forage
WO1998021439A1 (fr) * 1996-11-12 1998-05-22 Techmo Entwicklungs- Und Vertriebs Gmbh Procede et dispositif pour forer et revetir en meme temps des trous

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635296A (en) * 1970-06-04 1972-01-18 Maurice P Lebourg Drill bit construction
US3709308A (en) * 1970-12-02 1973-01-09 Christensen Diamond Prod Co Diamond drill bits
US3777826A (en) * 1971-09-15 1973-12-11 Boyles Ind Ltd Fluid responsive core barrel system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU791906A1 (ru) * 1976-09-14 1980-12-30 Джезказганский Ордена Ленина Горно-Металлургический Комбинат Им. К.И.Сатпаева Буровой снар д
US4760888A (en) * 1986-04-01 1988-08-02 Tone Boring Company Limited Drill bit for core boring
SU1654513A1 (ru) * 1988-10-28 1991-06-07 Всесоюзный Научно-Исследовательский Институт Экономики Минерального Сырья И Геологоразведочных Работ Коронка дл бурени с непрерывным выносом керна
WO1995034740A1 (fr) * 1994-06-10 1995-12-21 Ilomaeki Valto Appareil de forage
WO1998021439A1 (fr) * 1996-11-12 1998-05-22 Techmo Entwicklungs- Und Vertriebs Gmbh Procede et dispositif pour forer et revetir en meme temps des trous

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102782243A (zh) * 2009-12-15 2012-11-14 长年Tm公司 具有轴向渐缩水道的钻头
CN102782243B (zh) * 2009-12-15 2017-03-08 长年Tm公司 具有轴向渐缩水道的钻头
CN106884617A (zh) * 2009-12-15 2017-06-23 长年Tm公司 取芯钻头

Also Published As

Publication number Publication date
CA2403530A1 (fr) 2001-09-27
US20030029643A1 (en) 2003-02-13
ZA200207534B (en) 2004-02-23
AUPQ639900A0 (en) 2000-04-15

Similar Documents

Publication Publication Date Title
EP0601840B1 (fr) Perfectionements des trépans de forage rotatifs
CA2289389C (fr) Pieces rapportees pour trepans de forage
US8230952B2 (en) Sleeve structures for earth-boring tools, tools including sleeve structures and methods of forming such tools
US5647449A (en) Crowned surface with PDC layer
US7992658B2 (en) Pilot reamer with composite framework
US6454028B1 (en) Wear resistant drill bit
CA2289411C (fr) Pieces rapportees pour trepans de forage, ameliorees a l'aide d'un materiau extra-dur
US5615747A (en) Monolithic self sharpening rotary drill bit having tungsten carbide rods cast in steel alloys
US5431239A (en) Stud design for drill bit cutting element
BE1014353A5 (fr) Element coupant et trepan tournant utilisant cet element.
US20010003932A1 (en) Multi-layer, multi-grade multiple cutting surface pdc cutter
US9689210B2 (en) Diamond mining core drill bit and methods of making thereof
SE514931C2 (sv) Bergborrkrona samt förfarande för dess tillverkning
US5060739A (en) Cutter assemblies for rotary drill bits, and method of manufacturing same
CA2305812C (fr) Pieces de trepan avec zone de contrainte de compression residuelle
US20030029643A1 (en) Segment for a core drill bit and method of manufacture
US20100252331A1 (en) Methods for forming boring shoes for wellbore casing, and boring shoes and intermediate structures formed by such methods
CA1317930C (fr) Tube de forage a forte epaisseur de paroi, et methode de fabrication connexe
AU724612B3 (en) Segment for a core drill bit and method of manufacture
AU2001242089A1 (en) Segment for a core drill bit and method of manufacture
US11364535B2 (en) Methods of forming forged fixed-cutter earth-boring drill bit bodies
US4972912A (en) Diamond insert
CN101644136A (zh) 扩眼稳定器及底部钻具组合
US20070163778A1 (en) Casing Centralizer Coupling
US12352110B2 (en) Drill bit cutter with stress reducing features

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2001242089

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 2002/07534

Country of ref document: ZA

Ref document number: 200207534

Country of ref document: ZA

Ref document number: 2403530

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 10221187

Country of ref document: US

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP