EP2089606A1 - Vorrichtung zum bohren in gesteinsmaterial - Google Patents
Vorrichtung zum bohren in gesteinsmaterialInfo
- Publication number
- EP2089606A1 EP2089606A1 EP07815196A EP07815196A EP2089606A1 EP 2089606 A1 EP2089606 A1 EP 2089606A1 EP 07815196 A EP07815196 A EP 07815196A EP 07815196 A EP07815196 A EP 07815196A EP 2089606 A1 EP2089606 A1 EP 2089606A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- recoveries
- cladding tube
- passage openings
- hüllrohrabschnitt
- drilling
- 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 29
- 239000000463 material Substances 0.000 title claims abstract description 15
- 239000011435 rock Substances 0.000 title claims abstract description 6
- 238000005253 cladding Methods 0.000 claims abstract description 42
- 238000011084 recovery Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000011796 hollow space material Substances 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 8
- 239000003599 detergent Substances 0.000 description 7
- 239000003657 drainage water Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000011343 solid 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
- 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
Definitions
- the invention relates to a device for drilling in rock material, arranged on a hollow, composed of drill string sections drill pipe and the diameter of the drill string with its diameter exceeding drill bit, wherein the drill string is surrounded by a composite of Hüllrohrabroughen cladding tube between the drill pipe and its Inner wall forms a cavity and is provided with a passage of the mined drilling material in the interior of the cladding tube permitting füreriesöffhungen.
- a device of this kind is known, for example, from WO 00/11302 or from AT 006969 U2.
- Devices of this type allow not only a pure drilling, but also a percussion or rotary impact drilling, as well as a drainage of boreholes and also the creation of anchors, in which case the drill bit is preferably designed as a disposable drill bit.
- the drill bit is preferably designed as a disposable drill bit.
- rinsing agent fed directly over the drill bit the front of the well, which promotes flushing mined material through the openings in the present between the drill string and the cladding cavity, through which cavity the drilling material discharged from the wellbore becomes.
- a drainage or drainage of the borehole can take place.
- An essential requirement of a device of the type described above is the reliable flushing or water removal and also a reliable removal of the mined drilling material, i. of the cuttings. It is therefore important that the cavity between the cladding tube and drill pipe has a sufficiently large cross-section. Nevertheless, it can lead to deposits of cuttings and thus clogging of this cavity, especially if the flow rate of the detergent is too low.
- the invention has as its object, in a device of the type described above to avoid the mentioned difficulties and disadvantages and to provide a construction with which it is possible, despite a small borehole diameter a reliable To allow removal of the mined Bohrmateriäls and to find here with a thin-walled and lightweight cladding tube, the displays.
- the cladding tube with two or more distributed around the circumference arranged and directed against the drill pipe, and is provided over its length extending recoveries, wherein the passage openings are provided in the region of the recoveries.
- the cladding tube gets a particularly high stability, so that for the cladding tube with a small wall thickness Aus Siemens is found.
- the recoveries additionally cause a targeted reduction in cross-section for the effluent flushing agent or the drainage water, which leads to an increase in the flow rate and thus to a much more efficient application of the mined drilling material.
- a drill string centering device preferably a bearing sleeve, which suitably extend the recoveries in the radial direction up to the centering devices and fixes them to the recoveries are.
- the natural Stammsöffhungen are provided on the drill string nearest the reason of the recoveries, expediently a plurality of passage openings in the longitudinal direction of the cladding tube are arranged one behind the other.
- the passage openings are formed as longitudinal slots, wherein preferably two longitudinal slots are provided side by side to form a thin intermediate web, which embodiment offers the advantage that during drilling, in particular during rotational impact drilling, the intermediate webs vibrate, so that the Cuttings pass through the passages particularly easily and cause no congestion on these.
- a plug connection for connecting a further Hüllrohrabiteses is provided at the end of a Hüllrohrabiteses, wherein the plug connection on Hüllrohrabêt is provided on the outside in the field of confiscation.
- the connector is formed on the one hand by a provided on a Hüllrohrabêt sleeve and on the other hand provided by an adjacent Hüllrohrabsacrificing, insertable into the sleeve bolts.
- the outer circumference of the cladding tube is circular in cross section and the recesses in the cross section are at least partially circular in shape.
- a further expedient embodiment is characterized in that the outer circumference of the cladding tube is circular in cross-section and the recesses in the cross-section are V-shaped.
- four recesses are arranged distributed uniformly over the circumference of the cladding tube, expediently provided for each cladding tube section two plug-in connections on diametrically opposite recesses.
- At least one jacket tube section without passage openings is provided on the daylight side or on the air side.
- a sealing sleeve which seals the drilled hole between the drilled hole wall and the cladding tube.
- FIG. 1 shows an axial longitudinal section through a device according to the invention, which according to the line I-I of FIG. 2, which shows an end view in the direction of arrow II of Fig. 1, is guided.
- 3 shows a side view of a device according to the invention in a drill hole shown in section.
- Fig. 4 illustrates in an oblique view parts of the device according to the invention in an exploded view.
- FIGS. 5a and 5b show a cross-section through a cladding tube in different positions in space and the rinsing agent outflow taking place in the cladding tube.
- 6 and 7 also show cross sections through a cladding tube according to different Asus Entrysformen and Fig. 8 shows a part of a Hüllrohrabterrorismes with a variation of the passage openings.
- Fig. 1 carries a hollow drill pipe 1, which is designed as Schlagbohrgestnature, frontally a drill bit 2, with the through holes 3, the from Cavity 4 of the drill string 1 go out and the outside of the drill bit 2 ends, is provided so that through the cavity 4 of the drill string 1 supplied detergent 5 can emerge directly from the drill bit 2 in the hole 6, which not only removes the mined drilling material from the drill bit 2 can be, but also the drill bit 2 is cooled itself.
- the drill string 1 is composed of individual drill pipe sections 7, which are connected to each other by means of sleeves 8 in the axial direction one behind the other, for example by provided between the ends of the drill pipe sections 7 and the sleeves 8 screw thread. 9
- the drill string 1 is surrounded on the outside by a cladding tube 10, which is formed by Hüllrohrabêten 11, which are provided one behind the other in the axial direction.
- Each cladding tube section 11 has a circular cross-section which is interrupted by recesses 12, which are directed approximately radially to the central axis of the cladding tube sections 11.
- These recoveries 12 can, as shown in particular FIGS. 5, 6 and 7, be designed in cross-section semicircular or three-quarter circular or V-shaped. Of course, U-shaped cross sections or other functionally identical cross sections for the recoveries 12 are conceivable.
- These recoveries 12 are not quite enough to the outside of the drill string 1, but up to the drill pipe 1 in the cladding tube 10 centering bearing sleeves 13 which are rotatably connected to a respective Hüllrohrabêt 11.
- Hüllrohrabitese 11 are equal to each other, as well as the lengths of the drill pipe sections 7 are equal to each other - with the exception of the drill head supporting drill pipe section, which protrudes for attachment of the drill bit 2 on the first Hüllrohrabites 11, the so-called beginner element.
- This novice element 11 has at both ends a bearing sleeve 13, the remaining Hüllrohrabête 11 only at the rear end.
- one drill pipe section 7 and, at the same time, a casing pipe section 11 are to be connected to the device already in the borehole 6.
- the connecting the drill pipe sections 7 sockets 8 are slightly smaller in diameter than the Außern oncemesser the bearing sleeves 13 so that between each sleeve 8 and the sheath 10 is always a game and the drill pipe 1 is centered exclusively on the bearing sleeves 13 relative to the cladding tube 10.
- the Hüllrohrabroughe 11 are secured against rotation against each other, preferably by means of a connector 14.
- a connector 14 This is according to a particularly advantageous embodiment of a arranged at one end of a Hüllrohrabêtes 11 sleeve 15 and from a arranged at the end of the adjacent Hüllrohrabêtes 11 bolt 16 which is insertable into the sleeve 15 is formed.
- This bolt 16 is, as can be seen from Fig. 1, formed hollow.
- the connectors are housed in the recoveries 12, so that the circular outer cross section of the cladding tube 10 is not surmounted.
- passage openings 17 are provided to the cuttings or degraded drilling material - especially the drilling dust - in the interior of the cladding tube 10, in the between the Cladding tube 10 and the drill pipe 1 existing cavity 18 to enter.
- the passage openings 17 are formed as longitudinal slots, wherein two of these longitudinal slots 17 are provided side by side to form a thin web 19.
- the webs 19 vibrate, as a result of which the passage openings 17 develop a self-cleaning action, that is, clogging of the passage openings 17 can be largely avoided.
- the passage openings 17 can also have other cross sections. Cuttings with a slightly coarser grain passes primarily through the mutually aligned recoveries 12 from the borehole. 6
- the Hüllrohrabroughe 11 may also be provided on the outer circumference with perforations through which water can penetrate into the cavity 18. 4 shows that drill cuttings can also penetrate into the spaces between the recesses 12 on the front side of the beginner element, since the drill bit 2 has a substantially smaller diameter at its rear side than the cladding tube 10.
- Fig. 1 further reveals that the sleeves 8 of the drill pipe sections 7 come to rest with their front side on the front side of the bearing sleeves 13, however, the rear end side of a Hüllrohrabêtes 11 comes to rest with the front side of the subsequently arranged Hüllrohrabêtes in distance 20.
- the length L 1 of sleeve 8 to sleeve 8 is dimensioned slightly larger than the length L 2 of Hüllrohrabête 11, by 0.1 to 1.5 mm, preferably by 0.1 to 0.5 mm.
- the Hü ⁇ lrohrabête 11 which have a particular stability and rigidity by the recoveries 12, are made very thin-walled; the burden of the Hüllrohrabroughe 11 by impacts in the axial direction, as stated above, not on the thin wall of the Hüllrohrabête 11, but on the fixedly connected to the respective Hüllrohrabrough 11 bearing bush 13, against which the end face of the adjacent sleeve 8 beats.
- the cladding tube 10 can also be formed from a less solid material such as aluminum (eg as an extruded profile). Also wells of great depth up to 50m and above can be easily made.
- the taglicht masse or air-side end portion 21 of the device has Hüllrohrabitese 11, which have no openings 17.
- the number of provided with openings 17 Hüllrohrabitese 11 depends entirely on the local requirements of the rock.
- a hole 6 closing sealing sleeve 22 is provided between the last arranged Hüllrohrabites 11 and the B ohrloch wall.
- 5a and 5b show the entry of detergent 5 or drainage water into the interior of the cladding tube 10 and illustrate the Querschittsverengung the channels formed by the recoveries 12 for the effluent 5 and drainage water, which cross-sectional constrictions significantly increase the flow rate of the detergent 5 or the drainage water and thus ensure a better discharge of cuttings.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Credit Cards Or The Like (AREA)
- Drilling And Boring (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0198406A AT504561B1 (de) | 2006-11-29 | 2006-11-29 | Vorrichtung zum bohren in gesteinsmaterial |
PCT/AT2007/000536 WO2008064385A1 (de) | 2006-11-29 | 2007-11-29 | Vorrichtung zum bohren in gesteinsmaterial |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2089606A1 true EP2089606A1 (de) | 2009-08-19 |
EP2089606B1 EP2089606B1 (de) | 2011-01-12 |
Family
ID=39004874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07815196A Not-in-force EP2089606B1 (de) | 2006-11-29 | 2007-11-29 | Vorrichtung zum bohren in gesteinsmaterial |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2089606B1 (de) |
AT (2) | AT504561B1 (de) |
DE (1) | DE502007006268D1 (de) |
WO (1) | WO2008064385A1 (de) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2234454A (en) * | 1940-05-20 | 1941-03-11 | Herman F Richter | Apparatus for drilling wells |
AT284016B (de) * | 1966-02-28 | 1970-08-25 | Boehler & Co Ag Geb | Vorrichtung für die Herstellung von im wesentlichen horizontalen Bohrungen in Gestein oder Erdreich |
KR100609938B1 (ko) * | 1998-08-21 | 2006-08-04 | 테크모 엔트비클룽스-운트 페어트립스 게엠베하 | 토양 또는 암석에 구멍을 드릴링하고 배수하기 위한 장치 |
AT413231B (de) * | 2003-10-01 | 2005-12-15 | Techmo Entw & Vertriebs Gmbh | Verfahren und vorrichtung zum bohren von löchern in boden- oder gesteinsmaterial |
-
2006
- 2006-11-29 AT AT0198406A patent/AT504561B1/de not_active IP Right Cessation
-
2007
- 2007-11-29 DE DE502007006268T patent/DE502007006268D1/de active Active
- 2007-11-29 WO PCT/AT2007/000536 patent/WO2008064385A1/de active Application Filing
- 2007-11-29 EP EP07815196A patent/EP2089606B1/de not_active Not-in-force
- 2007-11-29 AT AT07815196T patent/ATE495343T1/de active
Non-Patent Citations (1)
Title |
---|
See references of WO2008064385A1 * |
Also Published As
Publication number | Publication date |
---|---|
AT504561A1 (de) | 2008-06-15 |
EP2089606B1 (de) | 2011-01-12 |
ATE495343T1 (de) | 2011-01-15 |
AT504561B1 (de) | 2009-05-15 |
WO2008064385A1 (de) | 2008-06-05 |
DE502007006268D1 (de) | 2011-02-24 |
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