EP2350420A1 - Dispositif de forage de roche - Google Patents
Dispositif de forage de rocheInfo
- Publication number
- EP2350420A1 EP2350420A1 EP09758569A EP09758569A EP2350420A1 EP 2350420 A1 EP2350420 A1 EP 2350420A1 EP 09758569 A EP09758569 A EP 09758569A EP 09758569 A EP09758569 A EP 09758569A EP 2350420 A1 EP2350420 A1 EP 2350420A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anchor
- string portion
- support shoe
- borehole
- support
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 36
- 239000011435 rock Substances 0.000 title claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000463 material Substances 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/18—Anchoring or feeding in the borehole
-
- 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
- This invention relates to a rock drilling machine. More particularly it concerns a rock drilling machine for drilling of boreholes in rock where the rock drilling machine comprises a drilling portion and a string portion which by- means of joinable pipes are connected to a support device on the outside of the borehole.
- support device is in this context meant an equipment positioned at the opening of the borehole and which is arranged to at least being able to displace a string portion in the borehole or to rotate the string portion about its central axis, or be provided with equipment for control and energy supply to the drilling portion and the string portion.
- the axial displacement force must be able to overcome the force needed to displace the string portion and the drilling portion themselves in the borehole and in addition apply to the drilling portion drill bit sufficient axial force for cutting progress to take place.
- a considerable share of the drilling portion and string portion weights are transmitted to the support device.
- the object of the invention is to remedy or reduce at least one of the prior art drawbacks .
- rock drilling machine for drilling of boreholes in rock
- the rock drilling machine comprises a drilling portion and a string portion which by means of joinable pipes are connected to a support device on the outside of the borehole
- the rock drilling machine in accordance with the invention is characterised in that the string portion is provided with an anchor comprising at least one against the borehole preloadable and relative to the string portion axially displaceable support shoe.
- the anchor may also transfer axial forces between the string portion and the borehole wall.
- the support shoe may be hydraulically displaceable between a retracted non-active position and an extended active position where the support shoe abuts the borehole wall. Hydraulic preloading of the support shoe is preferable for among other things to be able to compensate for unintentional displace- ment between the support shoe and the borehole wall .
- Other forms of actuators, such as electrical, may in some cases be appropriate .
- a mechanical interconnection of the support shoes may be appropriate to ensure that the support shoes are displaced synchronously.
- the support shoes may for example be connected to a common cylinder or they may be interlocked by means of linkages.
- the support shoe may be connected to the anchor housing of the anchor by means of a first link and to a hydraulic cylinder by means of a second link.
- a displacement of the piston rod in the hydraulic cylinder relative to the cylinder housing of the hydraulic cylinder causes the support shoe to be displaced radially relative to the string portion.
- the support shoe may abut the anchor via an in relation to the string portion longitudinal axis inclined abutment.
- the support shoe is displaced radially by displacing the support shoe along the abutment.
- the support shoe may in a further embodiment be connected to the anchor by means of a radially directed cylinder.
- the support shoe may be hydraulically axially displaceable relative to the string portion. Typically is the anchor displaced axially along the string portion together with the support shoe .
- the anchor may thus comprise a feeding cylinder connected between the string portion and the anchor in axial direction relative to the string portion.
- the mode of operation of the anchor is explained in the particular part of the description.
- Multiple independent displaceable anchors may be connected to the string portion.
- the positioning of the anchor relative to the drill bit may be adapted according to the type of drill string being used. If the drilling portion comprises a drive motor at the drill bit, then the anchor is normally arranged on the opposite side of the drive motor relative to the drill bit.
- An anchor according to the invention being connected to a string portion contributes to be able to displace the string portion having a considerable weight in a borehole.
- the invention also arranges to apply an axial drilling force from the anchor and to the drill bit and to be able to pull the whole string portion in the borehole.
- Fig. 1 shows a drilling portion and a string portion of a rock drilling machine in a borehole
- Fig. 2 shows partly in section and in a larger scale an anchor that is connected to a string portion where the anchor is in an inactive position;
- Fig. 3 shows the same as Fig. 2, but with the anchor in an active position.
- the reference numeral 1 indicates a rock drilling machine working in a borehole 2.
- the rock drilling machine 1 comprises a drilling portion 4 and a string portion 6 where the string portion 6 is provided with an anchor 8.
- the drilling portion 4 comprises in this embodiment a drill bit 10, a gear 12 and a drive motor 14.
- the string portion 6 comprises a hydraulic section 16 and an electric section 18.
- the anchor 8 see Figs. 2 and 3, comprises an anchor housing 24 which surrounds a guide pipe 26.
- the guide pipe 26 forms a part of the string portion and has advantageously a cornered cross-section, generally square as in the embodiment shown.
- the anchor housing 24 being provided with bearing material 28 abutting the guide pipe 26 is axially displaceable along the guide pipe .
- the anchor 8 comprises four support shoes 30 distributed about the longitudinal axis 32 of the string portion 6.
- Each support shoe 30 is by means of a first link 34 connected to the anchor housing 24 where the first link 34 is pivotally supported in a housing bracket 36.
- the first link 34 is connected to the support shoe 30 by means of a shaft 38.
- a second link 40 is pivotally connected to the support shoe 32 in the shaft 38.
- the second link 40 is in its opposite end portion pivotally connected to a piston rod 44 of a hydraulic cylinder 42, and to a sliding attachment 46 which is displaceable relative to the anchor housing 24.
- a hydraulic feed cylinder 48 is positioned within the guide pipe 26.
- the feed cylinder 48 is connected to the string portion by means of piston rod attachment 50 and to the anchor 8 by means of a cylinder attachment 52 extending through longitudinal slots 54 in the guide pipe 26.
- the cylinder attachment 52 is bolted to the anchor housing 24 by means of brackets 56. The cylinder attachment 52 is thus axially displaceable in the slots 54.
- the anchor 8 is in Fig. 2 shown in a position where the anchor 8 is in one of its end positions relative to the string portion 6.
- the support shoes 30 are retracted to their inactive positions.
- the feed cylinder 48 displaces in its minus stroke the anchor 8 along the guide pipe 26 toward the other end position for the anchor 8, see Fig. 3.
- the hydraulic cylinder 42 displaces the sliding attachment 46 in a direction toward the housing bracket 36.
- the first and the second links 34, 40 thereby cause the support shoe 30 to be displaced radially outward and be preloaded against the wall of the borehole 2.
- hoses and cables for control and power supply are not shown, but are connected to not shown equipment in the hydraulic section 16 and the electric section 18.
- the exemplary embodiment in Figs. 2 and 3 show a somewhat simplified anchor 8 compared to the anchor 8 in Fig. 1, as all support shoes 30 in Fig. 1 are connected to a common ring cylinder 58.
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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20082641A NO333300B1 (no) | 2008-06-05 | 2008-06-05 | Anordning ved bergboremaskin |
PCT/NO2009/000200 WO2009148322A1 (fr) | 2008-06-05 | 2009-05-29 | Dispositif de forage de roche |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2350420A1 true EP2350420A1 (fr) | 2011-08-03 |
EP2350420A4 EP2350420A4 (fr) | 2015-11-18 |
EP2350420B1 EP2350420B1 (fr) | 2018-02-21 |
Family
ID=41398281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09758569.9A Active EP2350420B1 (fr) | 2008-06-05 | 2009-05-29 | Dispositif de forage de roche |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2350420B1 (fr) |
NO (1) | NO333300B1 (fr) |
WO (1) | WO2009148322A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019135682A1 (fr) * | 2018-01-02 | 2019-07-11 | Norhard As | Dispositif au niveau d'une machine de forage de tunnel agencée pour des opérations de forage sans opérateurs dans le trou de forage |
NO20181428A1 (no) * | 2018-01-02 | 2019-07-03 | Norhard As | Anordning ved tunnelboremaskin tilrettelagt for boreoperasjoner uten bemanning inne i borehullet |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3088532A (en) | 1960-12-27 | 1963-05-07 | Jersey Prod Res Co | Bit loading device |
DE1262938B (de) | 1962-09-27 | 1968-03-14 | Wolfgang Ebeling Dipl Ing | Selbstfortschreitende Vorbohrmaschine |
DE1758505A1 (de) * | 1968-06-14 | 1971-03-25 | Demag Ag | Verfahren und Vorrichtung zum Vortreiben eines Schachtes mit einem Vortriebshilfsschacht |
DE2733199A1 (de) * | 1977-07-22 | 1979-02-01 | Adolf Rotter | Bohrvorrichtung zum einbringen von tiefbohrungen in erdreich, gestein u.dgl. |
US4314615A (en) * | 1980-05-28 | 1982-02-09 | George Sodder, Jr. | Self-propelled drilling head |
US4463814A (en) * | 1982-11-26 | 1984-08-07 | Advanced Drilling Corporation | Down-hole drilling apparatus |
GB8401452D0 (en) * | 1984-01-19 | 1984-02-22 | British Gas Corp | Replacing mains |
US4700788A (en) * | 1985-05-06 | 1987-10-20 | Shell Oil Company | Directional drilling pipelay |
GB2183274B (en) * | 1985-11-22 | 1988-08-10 | Camco Inc | Multiple line work performing apparatus |
SU1514942A1 (ru) | 1987-11-17 | 1989-10-15 | Научно-Производственное Объединение Самоходной Горной Техники "Криворожрудмаш" | Устройство дл бурени горных выработок |
SE501283C2 (sv) | 1993-05-06 | 1995-01-09 | Lars Sterner | Bergborrmaskin |
NO940493D0 (no) | 1994-02-14 | 1994-02-14 | Norsk Hydro As | Lokomotiv eller traktor for fremtrekking av utstyr i et rör eller borehull |
DE4404712A1 (de) * | 1994-02-15 | 1995-08-17 | Preussag Anlagenbau | Verfahren zum Ausbau eines Erdkerns aus einem grabenlos verlegten Rohr und Molch zur Durchführung des Verfahrens |
US5794703A (en) * | 1996-07-03 | 1998-08-18 | Ctes, L.C. | Wellbore tractor and method of moving an item through a wellbore |
US5752572A (en) * | 1996-09-10 | 1998-05-19 | Inco Limited | Tractor for remote movement and pressurization of a rock drill |
US7392859B2 (en) | 2004-03-17 | 2008-07-01 | Western Well Tool, Inc. | Roller link toggle gripper and downhole tractor |
-
2008
- 2008-06-05 NO NO20082641A patent/NO333300B1/no unknown
-
2009
- 2009-05-29 WO PCT/NO2009/000200 patent/WO2009148322A1/fr active Application Filing
- 2009-05-29 EP EP09758569.9A patent/EP2350420B1/fr active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2009148322A1 * |
Also Published As
Publication number | Publication date |
---|---|
NO20082641L (no) | 2009-12-07 |
WO2009148322A1 (fr) | 2009-12-10 |
EP2350420A4 (fr) | 2015-11-18 |
NO333300B1 (no) | 2013-04-29 |
EP2350420B1 (fr) | 2018-02-21 |
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