EP0806543B1 - Bohrvorrichtung für das schlagende Bohren - Google Patents
Bohrvorrichtung für das schlagende Bohren Download PDFInfo
- Publication number
- EP0806543B1 EP0806543B1 EP97105661A EP97105661A EP0806543B1 EP 0806543 B1 EP0806543 B1 EP 0806543B1 EP 97105661 A EP97105661 A EP 97105661A EP 97105661 A EP97105661 A EP 97105661A EP 0806543 B1 EP0806543 B1 EP 0806543B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drilling
- drilling apparatus
- hammer
- drill
- drill head
- 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
Links
- 238000005553 drilling Methods 0.000 title claims description 50
- 239000002184 metal Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000237942 Conidae Species 0.000 description 1
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
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
- E21B10/36—Percussion drill bits
- E21B10/40—Percussion drill bits with leading portion
-
- 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
- E21B10/36—Percussion drill bits
- E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
-
- 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
- E21B7/06—Deflecting the direction of boreholes
- E21B7/068—Deflecting the direction of boreholes drilled by a down-hole drilling motor
-
- 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
- E21B7/26—Drilling without earth removal, e.g. with self-propelled burrowing devices
- E21B7/267—Drilling devices with senders, e.g. radio-transmitters for position of drilling tool
Definitions
- the invention relates to a drilling device for the percussive drilling by means of downhole hammer, especially for horizontal drilling according to the preamble of claims 1, 2.
- the generic DE-A-27 17 717 discloses a rock drill bit, whose drill face in work terraces which is resolved from the center of the drill to the edge of the Surround the drill face towards each other, with the working terraces run concentrically to each other; a central Pilot terrace is one or more recutting terraces surrounded, which are all coaxial to the drilling axis.
- the cutting pins point diagonally towards the latter arranged.
- WO 9611323 A is also a concentric, terrace-like stepped boring head can be removed from its terraces project button-like elevations parallel to the axis, between which flush channels.
- a tubular element with graduated Displacement head is horizontal from a launch gun like a tapered pile from an air powered one axially moving sliding piston in a vertical line Pit wall by compressed air with an average Driving speed of 1 m / h to 10 m / h driven.
- the direction of advance can, for example, by means of a the earth missile's built-in probe via a radio frequency signal observed from above - but not influenced - become.
- the drill heads can be in Adaptation to the soil conditions can be replaced - if the earth missile when entering the new soil type has not got stuck.
- the drill head is designed as an eccentric or provided with a tax slope.
- To form the eccentric is less than 180 ° part of the circumference covering a cross-section crescent-shaped formation and designed as a step.
- the crown trim can also be arranged asymmetrically.
- a drill head in which the Cross section of the steps through a desk-like sloping surface of the drill head - the inside of its cone casing lies - is reduced on one side. This sloping surface lies approximately parallel to a generatrix of the cone shell.
- the Steps determined by the crown whose pins are also Tilt outward in the direction of advance.
- the discharge of cuttings that cannot be displaced take place via Minutes of drilling that occur at each stage between the Carbide pins are located.
- This drill bit allows the Use in soil classes 5 to 7.
- Ratio of the diameter of the end plate to the diameter the chisel or drill tip from 6: 1 to 8: 1 - preferably about 7: 1 - proven.
- the downhole hammer To enable a direction correction on the drill head, is the downhole hammer a radio transmitter of an external Assigned to the location system.
- a radio transmitter of an external Assigned to the location system Through the described Drilling heads are created in connection with location systems - Radio transmitter in the drilling tool and carrying the Radio receiver - a controllable drilling system.
- the drill head with the down-the-hole hammer - with simultaneous rotation - introduced By Interruption of rotation can cause the hole to run over the position of the control slopes or the eccentric to be influenced.
- the position of the tax slope is from Station displayed. After the correction, the Rotation activated again.
- the displacement drilling head according to the invention for down-the-mill hammers a drilling diameter of 80 to 300 mm can - depending on Down-the-hole hammer size - used up to floor class 6; this drilling system can usually with short Earth rockets used in displaceable soils replace.
- the system In contrast to earth missiles, the system is also in Loose soil, sand or water-bearing layers can be used because the down-the-hole hammer has a stiff Drill pipe is connected to the drill and with a Driving force of up to 850 KN can be injected.
- This feed force supports the powerful blows of the Percussion piston of the down-the-hole hammer, which the Displacing displacement core in the ground; thereby the rate of advance as well as the achievable Propulsion length is positively influenced.
- a displacement boring head 10 is shown in FIG. 1 below Interposition of a tubular retaining cap 12 at the end at one - with the housing 14 one in particular not shown downhole hammer 16 for striking horizontal drilling connected - receiving shaft 18 with spline profile 20.
- the housing 14 closes against the direction of advance x one by means of a threaded or hexagon connection 21 axially fixed rigid drill pipe 22, whichever can be extended.
- This displaceable drilling head 10 which can be used for bore diameters between 80 and 300 mm up to soil class 6, is connected to the down-hole hammer 16 via the tubular retaining cap 12 on a connecting plate 24 and tapers in a longitudinal section stepwise from an end plate 26 via here eight step plates 27, 27 a to 27 g , the number of which depends on the drill head diameter d, to a chisel tip 28.
- the disks 26, 27, 27 a to 27 g are parts of a one-piece crown body, that is to say molded onto one another, and their edges determine a construction cone, of which a generating line K is shown. Its cone tip defines an angle of approximately 40 °.
- the axial height a of the end plate 26 corresponds to the axial heights b of the step plates 27, 27 a to 27 g .
- the nine radial step widths i are the same and reduce the diameter d of the end plate 26 to the diameter n of the drill tip 28 in an example ratio of 7: 1.
- the number of steps, step width i and step height a can change.
- Fig. 3 shows a drill head 10 a , which is populated with hard metal pins 30; these form - here three - levels.
- the axes B of the hard metal pins 30 are inclined at an angle of approximately 33 ° to the drill head axis A.
- An air duct 32 runs in this, from which both a front duct 33 of smaller diameter axially and side ducts 34, which are inclined against the direction of advance x, extend.
- the latter open into an annular console surface 36 which in turn is inclined towards the direction of advance x and serve to discharge the down-the-hole hammer air while at the same time supporting the discharge of non-displaceable cuttings.
- the end plate 26 a is here - compared to that of Figures 1-- of double axial height a; From this end disk 26 a a crescent-like apex step 38 is formed, the radial step width i of which is continuously reduced on both sides of a line of symmetry G of the drill head cross-section up to a parallel Q which intersects the line of symmetry G at right angles to a horizontal straight line D in FIG. 5 ; whose distance t from that parallel Q corresponds approximately to the step width i.
- the down-the-hole hammer 16 is used for Straight ahead with simultaneous rotation.
- the course of the rotation can be determined by the rotational movement the setting of the eccentric described are influenced.
- the radio transmitter 40 of a location system is in the drilling tool housed - the radio receiver becomes during the day carried and shows except the position of the eccentric - or a tax inclined surface to be discussed - also the inclination and depth of the downhole hammer 16.
- both the axial air duct 32 and a Continuing axially offset air duct 42 dashed hinted at; the latter runs outside of that Radio transmitter 40.
- the displacement boring head 11 a of FIGS. 6, 7 is equipped with a control inclined surface 44 starting from the end plate 26; the latter appears in the side view of FIG. 6 as a straight line which is inclined at an angle w of approximately 22 ° to the drill head axis A and which intersects 27 g in the region of the front step disc. This straight line lies within the conical jacket K described in FIG. 1.
- the control inclined surface 44 here assumes the function described above for the position of the eccentric.
- the drilling head 11b serves on the one hand in the manner described Influencing the straight line. On the other hand, he commutes with direction correction up to approximately ⁇ 60 ° around the respective correction axis.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Drilling Tools (AREA)
Description
- Fig. 1, 4:
- teilweise geschnittene Seitenansichten jeweils eines Verdrängerbohrkopfes für einen Imlochhammer an einem Bohrgestänge;
- Fig. 2, 5:
- die Stirnansicht zu Fig. 1 bzw. Fig. 4;
- Fig. 3, 6, 8:
- teilweise geschnittene Seitenansichten anderer Ausgestaltungen eines Verdrängerbohrkopfes;
- Fig. 7, 9:
- die Stirnansicht zu Fig. 6 bzw. Fig. 8;
Claims (12)
- Bohrvorrichtung für das schlagende Bohren mittels Imlochhammers, insbesondere für das Horizontalbohren, mit einem querschnittlich von einer hammerwärtigen Endscheibe (26) zur Meißel- oder Bohrspitze (28) hin mehrfach in Stufen (26, 27, 27a bis 27g) verjüngten Bohrkopf (10, 10a, 11, 11a, 11b) sowie an zumindest einer Stirnfläche angeordnetem Kronenbesatz aus Hartmetallstiften od.dgl., wobei die Stufenkanten einen Kegelmantel (K) bestimmen und der Bohrkopf mit dem Imlochhammer an ein Bohrgestänge sowie gegebenenfalls zumindest einen in diesem axial verlaufenden Strömungskanal angeschlossen ist,
dadurch gekennzeichnet,
daß um einen weniger als 180° erfassenden Teil des Umfanges eine querschnittlich sichelartige Anformung (38) gelegt und als Stufe ausgebildet ist. - Bohrvorrichtung für das schlagende Bohren mittels Imlochhammers, insbesondere für das Horizontalbohren, mit einem querschnittlich von einer hammerwärtigen Endscheibe (26) zur Meißel- oder Bohrspitze (28) hin mehrfach in Stufen (26, 27, 27a bis 27g) verjüngten Bohrkopf (10, 10a, 11, 11a, 11b) sowie an zumindest einer Stirnfläche angeordnetem Kronenbesatz aus Hartmetallstiften od.dgl., wobei die Stufenkanten einen Kegelmantel (K) bestimmen und der Bohrkopf mit dem Imlochhammer an ein Bohrgestänge sowie gegebenenfalls zumindest einen in diesem axial verlaufenden Strömungskanal angeschlossen ist, dadurch gekennzeichnet, daß der Querschnitt der Stufen (26, 27, 27a bis 27g) durch eine pultartige Schrägfläche (44) des Bohrkopfes (11a), die innerhalb von dessen Kegelmantel (K) liegt, an einer Seite vermindert ist.
- Bohrvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die sichelartige Anformung (38) beidends an jeweils eine Bohrminute (46) angrenzt.
- Bohrvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Schrägfläche (44) parallel zu einer Erzeugenden des Kegelmantels (K) liegt.
- Bohrvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Stufen (26, 27, (27a bis 27g) vom Kronenbesatz bestimmt sind, dessen Stifte (30) zudem in Vortriebsrichtung (x) nach außen geneigt sind.
- Bohrvorrichtung nach einem der Ansprüche 1 bis 5, gekennzeichnet durch ein Verhältnis des Durchmessers (d) der Endscheibe (26) zum Durchmesser (n) der Meißel- oder Bohrspitze von etwa 7 : 1 bis 8 : 1.
- Bohrvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Anzahl der Stufen (26, 27, 27a bis 27g) mit steigendem Bohrungsdurchmesser zunimmt.
- Bohrvorrichtung nach Anspruch 1, 2 oder 7, gekennzeichnet durch neun Stufen (26, 27, 27a bis 27g) vor der Meißel- oder Bohrspitze (28).
- Bohrvorrichtung nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, daß die Endscheibe (26) gegen die Vortriebsrichtung (x) mit einer Anschlußplatte (24) kürzeren Durchmessers durch eine ringförmige Pultfläche (36) verbunden ist.
- Bohrvorrichtung nach Anspruch 5 und 9, dadurch gekennzeichnet, daß die Neigung der Pultfläche (36) etwa der Neigung der Hartmetallstifte (30) entspricht.
- Bohrvorrichtung nach wenigstens einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß dem Imlochbohrhammer (16) ein Funksender (40) eines externen Ortungssystems zugeordnet ist und/oder er als Exzenter ausgebildet ist.
- Bohrvorrichtung nach wenigstens einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass der Kronenbesatz (30) unsymmetrisch angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19618298 | 1996-05-07 | ||
DE19618298A DE19618298A1 (de) | 1996-05-07 | 1996-05-07 | Bohrvorrichtung für das schlagende Bohren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0806543A1 EP0806543A1 (de) | 1997-11-12 |
EP0806543B1 true EP0806543B1 (de) | 2001-01-24 |
Family
ID=7793587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97105661A Expired - Lifetime EP0806543B1 (de) | 1996-05-07 | 1997-04-05 | Bohrvorrichtung für das schlagende Bohren |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0806543B1 (de) |
AT (1) | ATE198923T1 (de) |
DE (2) | DE19618298A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000055467A1 (en) | 1999-03-03 | 2000-09-21 | Earth Tool Company, L.L.C. | Method and apparatus for directional boring |
AU2001241969A1 (en) * | 2000-03-03 | 2001-09-17 | Vermeer Manufacturing Company | Method and apparatus for directional boring under mixed conditions |
DE10024433A1 (de) * | 2000-05-19 | 2001-11-29 | Hawera Probst Gmbh | Gesteinsbohrer |
DE20016941U1 (de) | 2000-09-30 | 2000-12-21 | Gerätebau Wiedtal Schützeichel KG, 53577 Neustadt | Vollbohrer |
DE10101708B4 (de) * | 2001-01-15 | 2006-02-09 | Tracto-Technik Gmbh | Verfahren zum Felsmeißeln |
DE10122299C2 (de) * | 2001-05-08 | 2003-11-13 | Tracto Technik | Verfahren zum Felsbohren |
CA2478442A1 (en) | 2002-03-08 | 2003-09-18 | Shell Canada Limited | Steerable soil penetration system |
BE1016899A3 (nl) * | 2005-12-20 | 2007-09-04 | Geothermie J Vercruysse | Werkwijze voor het aanbrengen van een bodemwarmtewisselaar in een holte in een bodem en bodemwarmtewisselaar hiervoor bestemd. |
US8196677B2 (en) | 2009-08-04 | 2012-06-12 | Pioneer One, Inc. | Horizontal drilling system |
DE102010050244B4 (de) | 2010-10-30 | 2013-10-17 | Technische Universität Bergakademie Freiberg | Meißeldirektantrieb für Werkzeuge auf Basis einer Wärmekraftmaschine |
DE202011109928U1 (de) | 2011-02-24 | 2012-07-12 | Igor D. Shaposhnikov | Kegelbohrstange |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2558842A1 (de) * | 1975-12-27 | 1977-07-07 | Paul Schmidt | Selbstgetriebenes pneumatisches rammbohrgeraet, insbesondere fuer erdbohrungen |
DE2717717A1 (de) * | 1977-04-21 | 1978-10-26 | Wallram Hartmetall Gmbh | Gesteinsbohrkrone |
SE8901199L (sv) * | 1989-04-05 | 1990-10-06 | Uniroc Ab | Excentrisk borrkrona |
US5322391A (en) * | 1992-09-01 | 1994-06-21 | Foster-Miller, Inc. | Guided mole |
DE4309387C2 (de) * | 1993-03-23 | 1999-04-08 | Terra Ag Tiefbautechnik | Rammbohrgerät |
FI103430B (fi) * | 1994-10-05 | 1999-06-30 | Valto Ilomaeki | Poralaite ja menetelmä reiän poraamiseksi useaan erilaatuiseen maaperä än |
-
1996
- 1996-05-07 DE DE19618298A patent/DE19618298A1/de not_active Withdrawn
-
1997
- 1997-04-05 DE DE59702945T patent/DE59702945D1/de not_active Expired - Fee Related
- 1997-04-05 AT AT97105661T patent/ATE198923T1/de not_active IP Right Cessation
- 1997-04-05 EP EP97105661A patent/EP0806543B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0806543A1 (de) | 1997-11-12 |
DE59702945D1 (de) | 2001-03-01 |
DE19618298A1 (de) | 1997-11-13 |
ATE198923T1 (de) | 2001-02-15 |
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