EP1012440A1 - Bohrvorrichtung - Google Patents
BohrvorrichtungInfo
- Publication number
- EP1012440A1 EP1012440A1 EP99936506A EP99936506A EP1012440A1 EP 1012440 A1 EP1012440 A1 EP 1012440A1 EP 99936506 A EP99936506 A EP 99936506A EP 99936506 A EP99936506 A EP 99936506A EP 1012440 A1 EP1012440 A1 EP 1012440A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- drill
- drilling
- borehole
- boring
- 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 claims abstract description 67
- 238000004804 winding Methods 0.000 claims description 45
- 230000001050 lubricating effect Effects 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 abstract description 24
- 238000009527 percussion Methods 0.000 abstract description 5
- 239000011435 rock Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000000314 lubricant 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
- E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives
-
- 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
- E21B17/18—Pipes provided with plural fluid passages
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/02—Swivel joints in hose-lines
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems
-
- 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
- E21B4/20—Drives for drilling, used in the borehole combined with surface drive
-
- 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
- E21B6/00—Drives for drilling with combined rotary and percussive action
-
- 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
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
Definitions
- the invention relates to a drilling device with an external rotary hammer drill which is arranged outside the borehole and can be generated by means of the drilling energy, a drill pipe which is connected on one side to the external rotary hammer drill and by means of which the drilling energy from the external rotary hammer drill in Direction to the bottom of the borehole is transferable, and a drill bit which is connected to the end of the drill pipe on the side of the borehole and by means of which the drilling energy transmitted to it by the drill pipe can be converted into drilling progress.
- the directional accuracy that can be achieved with the drilling device described at the outset and the resulting rod stability are relatively low. Exact drilling in the specified drilling direction is only achieved with the conventional drilling device described at the outset up to a drilling depth of 15 m.
- the invention has for its object to develop the generic drilling device described in such a way that, while avoiding the aforementioned disadvantages of the generic drilling device, on the one hand achieves increased rod stability and on the other hand the
- the drill rod has an inner rod, by means of which the drilling energy can be transmitted from the rotary impact external hammer drill to the drill bit and a first winding channel is formed which extends from a first winding medium supply connection to the drill bit, and has an outer rod which surrounds the inner rod at a distance and forms a second winding channel between its inner surface and the outer surface of the inner rod, the e on the output side at a second winding medium supply connection and on the output side through the outer rod through holes through the
- the additional winding through the second winding channel also ensures that the winding medium flow is no longer interrupted, in particular in the case of chunky rock.
- the outer rod allows the annular space between the outer surface of the entire drill pipe and the borehole wall to be optimally adjusted. In this way, improved winding is achieved.
- there is a more stable drill string so that directional drilling at maximum drilling performance can be achieved easily even at greater drilling depths. Almost every rotary impact hammer drill can be equipped with the drill rod described above.
- Any conventional drill rod which can be used with rotary impact external rotary hammers can be provided as the inner rod of the drill rod of the drilling device according to the invention, only slight reworking of this drill rod being required.
- the outer rod of the drill string of the drilling device according to the invention is expediently formed from interconnectable casing tubes, so that the latter in the event of damage or the like. can be replaced individually.
- the casing pipes of the outer rod can have a comparatively small wall thickness, which makes them optimal possible adaptation of the cross-sectional area of the annular space between the outer jacket surface of the drill pipe and the borehole wall, the increase in weight of the drill pipe remains relatively small overall.
- a lubrication direction is arranged in a second winding medium supply line leading to the second winding medium supply connection, it is possible to better lubricate the casing pipes and the threaded connections of the drill rods forming the inner rod, so that the drill rod has increased service lives.
- a second flow control device is arranged in a second winding medium supply line leading to the second winding medium supply connection, so that the flow current through the second winding channel can be adjusted as required.
- the outer rod is advantageously arranged concentrically with the inner rod, whereby a considerable increase in the stability of the rod strand can be achieved. Due to the increased stability of the drill string, the directional accuracy during drilling can be increased further.
- the centering of the outer rod m with respect to the inner rod can be achieved in a technically and structurally simple manner if each drill rod of the inner rod has a fastening device in the region of its two ends, to which the two mutually facing ends of two successive jacket pipes of the outer rod can be detachably fastened .
- the detachable fastening of the jacket tubes are easy to replace if damaged, etc.
- each boring bar of the inner rod has a guide recess in the area of its two ends, which holds the fastening device assigned to it in a rotationally fixed and displaceable manner in the axial direction, it is possible that the outer rod consisting of the casing tubes does not have the impact energy to be transmitted during the impact stroke, nor does it the rotational energy to be transmitted during the rotation of the drill pipe is applied.
- the jacket pipes are subjected to loads due to the friction between the outer jacket surface of the jacket pipes and the borehole wall or if the linkage breaks. The wear of the jacket pipes is therefore comparatively low. Nevertheless, the outer rod having the casing tube can reliably prevent larger amounts of rock from entering the borehole. The loss of a drill pipe due to the fact that it cannot be pulled in the event of faults in the borehole is thus excluded.
- each guide recess should be approximately the sum of the axial extension of the fastening device held by it and the
- Stroke stroke of the rotary impact hammer drill Corresponding to the stroke of the rotary hammer Anbohrha mers then there is an axial adjustability between the inner and outer rods.
- a rotationally fixed attachment of the outer rod to the inner rod is achieved in a simple manner in that the attachment st Trentstabchtonne circumferential direction are positively connected to the car wells.
- any necessary wear parts are arranged in the fastening device for holding the casing tubes together and on the inner rod. These wear parts can then be replaced by replacing the fastening device.
- the drilling device according to the invention With the drilling device according to the invention, a particularly favorable ratio between the borehole diameter on the one hand and the diameter of the drill string on the other hand can be achieved. This results in an improved winding of the borehole and a higher effectiveness in requesting the drill clamp that is formed on the bottom of the borehole. This improved winding is made even more optimal by the second winding channel provided according to the invention.
- the drilling device according to the invention can be used in particular for large-diameter bores in the range of borehole diameters between 70 and 180 mm, while achieving the advantages which can be achieved with it.
- the upward flow of winding medium in the annular space between the outer surface of the drill pipe and the wall of the borehole does not stop, even when the rock is volatile, because above a gap there is a negative pressure by means of which the drill clamp moves upwards is pulled.
- binders for example glucose or the like, can also be introduced by means of the second winding channel to stabilize the borehole wall.
- a drilling device has a rotary impact external rotary hammer 1, which is shown in the single figure only with regard to its mode of operation, by means of the drilling energy m in the form of a
- Rotational and a stroke movement can be generated.
- Different types of rotary impact external rotary hammers 1 can be used for the drilling device according to the invention.
- the transmission of the drilling energy generated by the external rotary hammer drill 1, which is arranged outside the borehole 2, to the bottom of the borehole 3 takes place by means of an inner rod 4, which is connected to the external rotary hammer drill 1 in such a way that the rotary and percussion movements, such as it is generated by the rotary impact rotary hammer 1, to the inner rod 4 is transferable.
- the inner rod 4 forms part of the entire drill rod 5 of the drilling device according to the invention.
- the drill rod 5 also includes an outer rod 6, which concentrically surrounds the inner rod 4.
- the drilling energy is transmitted to a drill bit 7, by means of which the drilling energy can be implemented by progressively destroying the bottom of the borehole 3 m.
- the drill bit 7 has flushing medium outlets 8 which are in fluid communication with a first flushing channel 10 by means of a flushing medium connection 9 on the drill bit side, which in turn has a first flushing medium supply connection 11 which is in a holding head 12 of the drilling device according to the invention is formed, and a first flushing medium supply line 13 is connected to a flushing medium supply source 14.
- a first flow control device 16 Arranged in the first flushing medium supply line 13 is a first flow control device 16 which can be operated from a drilling rig 15 and by means of which the flushing medium loading on the bottom of the borehole 3 can be set as a function of the rock present and other parameters.
- the rock destroyed or comminuted in the area of the borehole bottom 3 by the drill bit 7 is moved upwards by means of the flushing medium reaching the borehole bottom 3 in the manner described through the annular space 17, which is formed between the outer casing surface of the outer rod 6 and the borehole wall 18 Transported away to the mouth of the borehole 19.
- the inner linkage 4 consists of boring bars 20 which are connected to one another in a rotationally fixed manner and which are each provided in the center with axial bores which form the first rinsing channel 10.
- the drill rods 20 each have a guide recess 21, in each of which a fastening device 22 is held in a manner to be described.
- the fastening device 22 serves for the rotationally fixed and axially displaceable attachment of the outer tubes 6 forming casing tubes 23 to the inner rods 4.
- the mutually assigned ends of two successive jacket tubes 23 can be fastened to each fastening device 22.
- the fastening devices 22 are non-rotatably and axially displaceable in the guide recesses 21 formed in the boring bars 20, so that the outer linkage 6 formed by the casing tubes 23 is arranged in a rotationally fixed and axially displaceable manner with respect to the inner linkage 4 formed by the boring bars 20.
- each guide recess 21 corresponds to the sum of the axial extent of the fastening device 22 assigned to it and the stroke of the rotary hammer drill 1; this can prevent the outer linkage 6 and the casing tubes 23 from the
- Rotary impact external hammer 1 generated impact energy.
- Any wear parts 24 which are required for the movable attachment of the outer linkage 6 to the inner linkage 4 are formed as components of the fastening device 22.
- the casing tubes 23 of the outer rod 6 are designed with an engagement recess 25, which can cooperate with conventional release devices, not shown in the figure.
- the components of the drill pipe 5 are designed so that they can be used with proven magazines, holding heads 12 and release devices.
- the casing tubes 23 rotate with the inner rod 4 or the drill rods 20 so that they are not loaded with a torque.
- the jacket tubes 23 of the outer rod 6 Due to the low mechanical load on the jacket tubes 23 of the outer rod 6, the jacket tubes 23 can be made comparatively thin-walled, so that the total weight of the drill rod 5 is not increased significantly by the additional outer rod 6.
- annular, second flushing channel 26 is formed between the outer surface of the inner rod 4 or the drill rods 20 and the inner surface of the outer rod 6 or the casing tubes 23.
- This second winding channel 26 is connected by means of a second flushing medium supply connection 27 provided in the holding head 12 to a second flushing medium supply line 28, which in turn is in fluid communication with the flushing medium supply source 14.
- a second flow control device 29 Arranged in the second winding medium supply line 28 is a second flow control device 29 which can be actuated from the drilling rig 15 and by means of which the flow of the winding medium through the second supply line 28 and thus through the second flushing channel 26 can be adjusted.
- a lubrication device 30 is provided in the second winding medium supply line 28, by means of which a suitable lubricant can be introduced into the second winding medium supply line 28, so that it can considerably increase the service life of the casing tubes 23 and the threaded connections of the boring bars 20.
- bores 31 are formed in the jacket tubes 23 near the lower fastening devices 22, through which winding medium from the second winding channel 26 m penetrates the ring space between the borehole wall 18 and the outer jacket surface of the jacket tubes 23 and the outer rod 6 can.
- the demand for the drilling clamp produced on the bottom of the borehole 3 by means of the drill bit 7 can be strongly supported by the ring space 17 between the outer surface of the outer rod 6 and the borehole wall 18, which is otherwise solely due to the through the first winding channel 10 of the drill bit 7 and so the borehole bottom 3 supplied winding medium had to be accomplished.
- the removal of the drill bit generated at the bottom of the borehole 3 by the drill bit 7 is also facilitated by the Rmgraum 17 in that the cross-sectional area of the annular space 17 is considerably reduced due to the presence of the outer rod 6, so that the pressure of the winding medium in the Rmgraum 17 is comparatively stays big.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Paper (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Saccharide Compounds (AREA)
- Steroid Compounds (AREA)
- Surgical Instruments (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19831009 | 1998-07-10 | ||
DE19831009A DE19831009C2 (de) | 1998-07-10 | 1998-07-10 | Bohrvorrichtung |
PCT/EP1999/004833 WO2000003115A1 (de) | 1998-07-10 | 1999-07-09 | Bohrvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1012440A1 true EP1012440A1 (de) | 2000-06-28 |
EP1012440B1 EP1012440B1 (de) | 2003-05-02 |
Family
ID=7873658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99936506A Expired - Lifetime EP1012440B1 (de) | 1998-07-10 | 1999-07-09 | Bohrvorrichtung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1012440B1 (de) |
AT (1) | ATE239168T1 (de) |
AU (1) | AU5158199A (de) |
DE (2) | DE19831009C2 (de) |
WO (1) | WO2000003115A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT411383B (de) * | 2001-11-30 | 2003-12-29 | Techmo Entw & Vertriebs Gmbh | Verfahren und vorrichtung zum bohren von löchern |
DE102006059171B3 (de) * | 2006-12-14 | 2008-04-03 | Klemm Bohrtechnik Zweigniederlassung Der Bauer Maschinen Gmbh | Bohrvorrichtung und Verfahren zum Erstellen einer Bohrung im Erdboden |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU467150B2 (en) * | 1970-04-03 | 1973-01-25 | United Geophysical Corp. | Improvements in and relating to drilling apparatus |
US4683944A (en) * | 1985-05-06 | 1987-08-04 | Innotech Energy Corporation | Drill pipes and casings utilizing multi-conduit tubulars |
DE4317037A1 (de) * | 1993-05-21 | 1994-11-24 | Hausherr & Soehne Rudolf | Bohrvorrichtung |
-
1998
- 1998-07-10 DE DE19831009A patent/DE19831009C2/de not_active Expired - Fee Related
-
1999
- 1999-07-09 DE DE59905309T patent/DE59905309D1/de not_active Expired - Fee Related
- 1999-07-09 EP EP99936506A patent/EP1012440B1/de not_active Expired - Lifetime
- 1999-07-09 AU AU51581/99A patent/AU5158199A/en not_active Abandoned
- 1999-07-09 AT AT99936506T patent/ATE239168T1/de not_active IP Right Cessation
- 1999-07-09 WO PCT/EP1999/004833 patent/WO2000003115A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO0003115A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19831009C2 (de) | 2000-05-18 |
ATE239168T1 (de) | 2003-05-15 |
DE19831009A1 (de) | 2000-01-13 |
AU5158199A (en) | 2000-02-01 |
EP1012440B1 (de) | 2003-05-02 |
DE59905309D1 (de) | 2003-06-05 |
WO2000003115A1 (de) | 2000-01-20 |
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