WO2003102356A1 - Securing arrangement for reamers in raise boring - Google Patents
Securing arrangement for reamers in raise boring Download PDFInfo
- Publication number
- WO2003102356A1 WO2003102356A1 PCT/SE2003/000849 SE0300849W WO03102356A1 WO 2003102356 A1 WO2003102356 A1 WO 2003102356A1 SE 0300849 W SE0300849 W SE 0300849W WO 03102356 A1 WO03102356 A1 WO 03102356A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hole
- safety
- drill bit
- drill
- arrangement according
- Prior art date
Links
- 238000005553 drilling Methods 0.000 claims abstract description 7
- 239000003381 stabilizer Substances 0.000 claims description 3
- 230000000875 corresponding effect Effects 0.000 description 6
- 239000011435 rock Substances 0.000 description 4
- 241000125205 Anethum Species 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D3/00—Raising shafts, i.e. working upwards from the bottom
Definitions
- the present invention relates to a safety arrangement relating to drill bits for drill hole reaming or broaching, i.e. drilling of vertical holes of larger diameter from the bottom of a pre-drilled hole and upwards, with the aid of a drill bit suspended from a rod extending through said pre-drilled hole or pilot hole.
- Drill bits of this kind are normally referred to as reamers.
- the top of the rod carrying the drill bit is fastened to the drilling unit which causes the rod, and therewith the dill bit, to rotate.
- the drilling unit also draws the rod and the drill bit successively upwards, as the dill bit cuts away the rock around the pilot hole.
- this object is achieved by providing said element with a hole or bore which extends along at least a part of the length of said element and which houses a safety device that functions to capture the element and therewith also the drill bit in the event of a breakage, wherein the safety device is connected to a threaded part of the overlying element and to a part of the element spaced from said threaded part thereof .
- the safety device has the form of a safety rod that includes a transverse member at either end thereof, said members having a length which is greater than the diameter of the hole in said element and are received in a widened portion of the hole in the proximity of said ends of the safety rod.
- at least one of the widened portions of the hole in said element has a given axial extension which enables the element to move axially to some extent in the event of a breakage.
- Figure 1 is a perspective view of a drill bit having a centrally mounted connecting element (stinger) ;
- Figure 2 is a schematic longitudinal view of a first embodiment of a stinger that includes an inventive safety device; and
- Figure 3 is a view corresponding to Figure 2 of a second exemplifying embodiment.
- Figure 1 illustrates a drill bit 1 that comprises a number of cutters 2 and a connecting element in the form of a stinger 3 mounted centrally of the bit 1.
- the stinger 3 has at its upper end an external screw thread 4 by means of which the drill bit 1 can be connected to a downwardly extending drill string (not shown) that includes further connecting elements.
- the drill string enables the drill bit 1 to be rotated and drawn upwards so that the cutters 2 on the top of the drill bit will cut away the rock around the pilot hole in which the drill string extends and in which the stinger is located.
- Fig.2 illustrates an exemplifying embodiment of a stinger 3 provided with a safety device according to the present invention.
- the safety device comprises a safety rod 5 that extends through a longitudinal hole 6 provided in the stinger 3.
- the hole 6 extends essentially through the full length of the stinger, with a minimum requirement that the length of the hole is such as to extend at least beyond the region where breakage of the stinger is normally expected to occur.
- the hole 6 has in its upper end in the threaded portion of the stinger 3 a radial widening 7 and a radial widening 8 at its other end.
- the safety rod 5 has at each end a respective flange 9, 10 which projects radially outwards from the rod 5 and which has a diameter that is larger than the diameter of the hole 6 that extends through the rod 5 , so as to prevent the rod from being drawn through the hole.
- the flange may be substituted with some other transverse member whose length is greater than the diameter of the longitudinally extending hole 6. Should the stinger 3 break, the safety rod will hold up the broken part of the stinger 3, and therewith also the drill bit 1, by virtue of the engagement of the flanges 9, 10 with the surfaces of the widened por- tions 7, 8 of said hole 6.
- a break does not normally occur at the very uppermost part of the stinger 3 , where the hole widening 7 is situated, but slightly beneath this point, and hence the safety rod 5 will be held firmly in the upper widened portion 7 of the hole and the lower flange 10 on the rod 5 will support the stinger and the drill bit by virtue of its abutment with the surfaces of the widened portion 8 of said hole .
- Fig. 3 illustrates a variant of the embodiment shown in Fig. 2 which differs from what is shown in Fig.2 and from what has been described with reference thereto by the fact that the lower widened portion 8" of the hole in the stinger 3 has a longer axial length and that, in a normal state, the flange 10 on the safety rod 5 is located at a given distance from the bottom of the widened portion 8', as shown in the Figure.
- this embodiment there is obtained a more distinct axial displacement of the drill bit 1 from the rod, which is connected to the drilling unit, whereby the drill bit will move out of contact with the rock face. This will indicate immedi- ately that a break has occurred, because of the ensuing sudden lack of resistance against rotation of the drill bit.
- the safety device is not restricted to a rod that extends through the greater part of the length of the stinger/element and that some other means can be used instead, such as a wire that is able to support the weight of the drill bit should the stinger/element break.
- the safety arrangement according to the invention will preferably be constructed so that the longitudinal holes in respective elements can be through-passed by a rinsing or flushing medium, such as water. In this case it is necessary to dimension the safety device so that the flushing or rinsing medium is able to pass through the longitudinal channels.
- the transverse member described above should also be designed to allow said medium to pass said member. This should present no problem when said transverse member is rod shaped. When the transverse member is a flange, the flange may conveniently be perforated with axially extending passageways.
- the element is a stinger
- a corresponding arrangement can be provided in other elements included in the drill string, such as connecting drill pipes and stabilisers. These elements also include screw threads corresponding to those described above with regard to the stinger and are liable to break at corre- sponding places.
- other elements in the drill string can be made safe against the event of a breakage by means of the inventive arrangement, so that a breakage in their connection with another element need not result in the loss of the drill bit and that part of the drill string that lies beneath the place at which the breakage occurred.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03725969A EP1532345A1 (en) | 2002-05-31 | 2003-05-26 | Securing arrangement for reamers in raise boring |
US10/515,849 US20050252693A1 (en) | 2002-05-31 | 2003-05-26 | Securing arrangement for reamers in raise boring |
AU2003231489A AU2003231489A1 (en) | 2002-05-31 | 2003-05-26 | Securing arrangement for reamers in raise boring |
CA002486108A CA2486108A1 (en) | 2002-05-31 | 2003-05-26 | Securing arrangement for reamers in raise boring |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0201638-4 | 2002-05-31 | ||
SE0201638A SE524156C2 (en) | 2002-05-31 | 2002-05-31 | Fuse arrangement at drill bit for raisers |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003102356A1 true WO2003102356A1 (en) | 2003-12-11 |
Family
ID=20288021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2003/000849 WO2003102356A1 (en) | 2002-05-31 | 2003-05-26 | Securing arrangement for reamers in raise boring |
Country Status (8)
Country | Link |
---|---|
US (1) | US20050252693A1 (en) |
EP (1) | EP1532345A1 (en) |
AU (1) | AU2003231489A1 (en) |
CA (1) | CA2486108A1 (en) |
RU (1) | RU2004138792A (en) |
SE (1) | SE524156C2 (en) |
WO (1) | WO2003102356A1 (en) |
ZA (1) | ZA200409500B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017079808A1 (en) * | 2015-11-12 | 2017-05-18 | Gb Noonan Investments Pty Ltd | Safety system and method for protecting against a hazard of drill rod failure in a drilled rock bore |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8464813B2 (en) | 2006-06-20 | 2013-06-18 | Atlas Copco Secoroc Llc | Cutter assembly for a raise boring reamer |
SA108290829B1 (en) * | 2007-12-21 | 2012-01-24 | بيكر هوغيس انكوربوريتد | Reamer with Balanced Cutting Structure for Use in A Wellbore |
SA108290832B1 (en) | 2007-12-21 | 2012-06-05 | بيكر هوغيس انكوربوريتد | Reamer with Stabilizer Arms for Use in A Wellbore |
US7938204B2 (en) * | 2007-12-21 | 2011-05-10 | Baker Hughes Incorporated | Reamer with improved hydraulics for use in a wellbore |
CN102251744B (en) * | 2011-06-17 | 2013-03-20 | 中南大学 | Annular patio drilling machine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1514943A1 (en) * | 1988-01-04 | 1989-10-15 | Криворожский горнорудный институт | Reverse-run hole expander |
SU1567780A1 (en) * | 1988-08-29 | 1990-05-30 | Научно-Производственное Объединение Самоходной Горной Техники "Криворожрудмаш" | Method of working raise |
RU2004809C1 (en) * | 1991-05-20 | 1993-12-15 | Криворожский горнорудный институт | Device for driving raises |
WO2001092679A1 (en) * | 2000-05-29 | 2001-12-06 | Uniroc Ab | Device for raise boring |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2086680A (en) * | 1934-09-08 | 1937-07-13 | Hughes Tool Co | Drill cutter mounting |
US2728556A (en) * | 1954-06-24 | 1955-12-27 | Nick Crain | Oscillating drill shank adaptor |
US4310059A (en) * | 1980-01-21 | 1982-01-12 | Christensen, Inc. | Composite heavy metal drill collar |
SE460141B (en) * | 1986-02-24 | 1989-09-11 | Santrade Ltd | DRILLING TOOL FOR ROTATION AND / OR SHIPPING DRILLING INCLUDING AN Eccentric Rifle AND RIDER INCLUDED IN SUCH A DRILLING TOOL |
US5050692A (en) * | 1987-08-07 | 1991-09-24 | Baker Hughes Incorporated | Method for directional drilling of subterranean wells |
US4852672A (en) * | 1988-08-15 | 1989-08-01 | Behrens Robert N | Drill apparatus having a primary drill and a pilot drill |
US6325162B1 (en) * | 1997-12-04 | 2001-12-04 | Halliburton Energy Services, Inc. | Bit connector |
-
2002
- 2002-05-31 SE SE0201638A patent/SE524156C2/en not_active IP Right Cessation
-
2003
- 2003-05-26 WO PCT/SE2003/000849 patent/WO2003102356A1/en not_active Application Discontinuation
- 2003-05-26 RU RU2004138792/03A patent/RU2004138792A/en not_active Application Discontinuation
- 2003-05-26 EP EP03725969A patent/EP1532345A1/en not_active Withdrawn
- 2003-05-26 AU AU2003231489A patent/AU2003231489A1/en not_active Abandoned
- 2003-05-26 CA CA002486108A patent/CA2486108A1/en not_active Abandoned
- 2003-05-26 US US10/515,849 patent/US20050252693A1/en not_active Abandoned
-
2004
- 2004-11-24 ZA ZA200409500A patent/ZA200409500B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1514943A1 (en) * | 1988-01-04 | 1989-10-15 | Криворожский горнорудный институт | Reverse-run hole expander |
SU1567780A1 (en) * | 1988-08-29 | 1990-05-30 | Научно-Производственное Объединение Самоходной Горной Техники "Криворожрудмаш" | Method of working raise |
RU2004809C1 (en) * | 1991-05-20 | 1993-12-15 | Криворожский горнорудный институт | Device for driving raises |
WO2001092679A1 (en) * | 2000-05-29 | 2001-12-06 | Uniroc Ab | Device for raise boring |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017079808A1 (en) * | 2015-11-12 | 2017-05-18 | Gb Noonan Investments Pty Ltd | Safety system and method for protecting against a hazard of drill rod failure in a drilled rock bore |
AU2020103956B4 (en) * | 2015-11-12 | 2021-03-11 | Jusand Nominees Pty Ltd | Safety system and method for protecting against a hazard of drill rod failure in a drilled rock bore |
AU2015255248B2 (en) * | 2015-11-12 | 2021-05-13 | Jusand Nominees Pty Ltd | Safety system and method for protecting against a hazard of drill rod failure in a drilled rock bore |
AU2021200376B2 (en) * | 2015-11-12 | 2022-01-27 | Jusand Nominees Pty Ltd | Safety system and method for protecting against a hazard of drill rod failure in a drilled rock bore |
AU2021215238B2 (en) * | 2015-11-12 | 2023-03-02 | Jusand Nominees Pty Ltd | Safety System And Method For Protecting Against A Hazard Of Drill Rod Failure In A Drilled Rock Bore |
Also Published As
Publication number | Publication date |
---|---|
RU2004138792A (en) | 2005-06-10 |
CA2486108A1 (en) | 2003-12-11 |
AU2003231489A1 (en) | 2003-12-19 |
ZA200409500B (en) | 2005-10-06 |
SE0201638L (en) | 2003-12-01 |
SE524156C2 (en) | 2004-07-06 |
EP1532345A1 (en) | 2005-05-25 |
US20050252693A1 (en) | 2005-11-17 |
SE0201638D0 (en) | 2002-05-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1176234A (en) | Intermediate weight drill string member | |
RU1836535C (en) | Drill pipe string assembling | |
US20090166093A1 (en) | Reamer With Stabilizers For Use In A Wellbore | |
KR20120082035A (en) | Machine tool bit design | |
EP0962620B1 (en) | A two-stage drill bit | |
US5641027A (en) | Drilling system | |
US6213229B1 (en) | Drilling motor drill bit reaming stabilizer | |
US20050252693A1 (en) | Securing arrangement for reamers in raise boring | |
EP1412608B1 (en) | Downhole release joint | |
FI88742C (en) | Boring bar elements | |
EP0697058B1 (en) | Drill pipe for directional drilling | |
US5722496A (en) | Removable guide member for guiding drill string components in a drill hole | |
US4330043A (en) | Keyseat wiper | |
US3146813A (en) | Boring tool | |
EP1558832B1 (en) | A reamer assembly | |
US5664627A (en) | Method and apparatus for protecting a steel riser from chemical cutters | |
US8590642B2 (en) | Percussion hammer bit retention system | |
WO2020187575A1 (en) | Drill string rod | |
US2090822A (en) | Drill collar | |
US5409065A (en) | Apparatus and method for retrieving an object from a well bore, and method for making a tool for retrieving objects from a well bore | |
US1854911A (en) | Earth boring drill | |
WO2017201601A1 (en) | Slot recovery method | |
AU766853B2 (en) | Controlled breaking of cables in a well casing | |
WO2001092679A1 (en) | Device for raise boring | |
WO2022248841A1 (en) | Cutter assembly |
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 EC 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 NI NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM 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 ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2003231489 Country of ref document: AU Ref document number: 2486108 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200409500 Country of ref document: ZA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003725969 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2004138792 Country of ref document: RU Kind code of ref document: A |
|
WWP | Wipo information: published in national office |
Ref document number: 2003725969 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10515849 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2003725969 Country of ref document: EP |