EP1085166A1 - Fleuret hélicoidal - Google Patents
Fleuret hélicoidal Download PDFInfo
- Publication number
- EP1085166A1 EP1085166A1 EP00402300A EP00402300A EP1085166A1 EP 1085166 A1 EP1085166 A1 EP 1085166A1 EP 00402300 A EP00402300 A EP 00402300A EP 00402300 A EP00402300 A EP 00402300A EP 1085166 A1 EP1085166 A1 EP 1085166A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- auger
- casing
- rotation
- drill bit
- drilling tool
- 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.)
- Withdrawn
Links
- 238000005553 drilling Methods 0.000 claims abstract description 26
- 238000006073 displacement reaction Methods 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 235000019592 roughness Nutrition 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000004459 forage Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 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
- 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
- E21B7/201—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes with helical conveying means
Definitions
- the present invention relates to a drilling tool provided with a casing to make wells or excavations in the ground.
- FIG 1 there is shown schematically a drilling tool equipped with its casing. More specifically, there is shown the vertical mast 10 of the tool on which is guided in vertical translation the head 12 for rotating the auger 14 via the vertical axis 16. There is also shown a casing 18 connected to the mast 10 by connection elements 20, allowing the depression of the casing 18 as the well 22 is drilled.
- An object of the present invention is to provide a tool for drilling the auger type which includes a casing allowing to produce a displacement vertical of the ground extracted by the auger with respect to the casing equipping it.
- the drilling tool comprising a drilling auger assembly, means for rotating the assembly forming an auger and casing surrounding over part of its length the auger assembly, is characterized in that said casing comprises on at at least part of its length means to limit the speed of rotation of the ground extracted by the auger assembly near the internal face of said casing relative to the speed of rotation of said auger assembly, whereby the rotation of the auger assembly allows the vertical movement of the ground extracted inside said casing.
- the braking means are formed by an internal lining of the casing having a coefficient of high friction for the ground or by grooves on the internal face of the casing or more generally by any arrangement making it possible to slow down the rotation of the peripheral part of the extracted ground contained in the casing in relation to the speed of rotation of the auger itself, in particular by increasing the coefficient of friction of the internal face of the casing.
- the subject of the invention is also various improvements made to the auger itself in relation to the casing according to the invention.
- FIG. 2 we will describe the whole of a casing drilling tool according to the invention.
- the auger assembly 30 which is constituted in the example considered by a upper auger 32 and by a lower auger 34.
- the upper auger 32 is rotated by a hollow pin 36 cooperating with a rotation head 38.
- the lower auger 34 is rotated by a pin 40 which is engaged in the hollow axis 36 of the upper auger.
- the end of the axis 40 is driven in rotation by a head 42, the heads 38 and 42 being movable in translation on the mast not shown.
- the cylindrical casing 44 which surrounds at least the upper auger 32.
- This casing is integral with its upper end 44a of connection means not shown in detail 46 which allow the establishment of the casing 44 as the drilling progresses.
- the internal face 50 of the casing 44 comprises means, preferably mechanical, which limit the speed of rotation of the part of the ground extracted by the auger and which is driven in rotation by it. These means are suitable for braking the terrain at inside the casing with respect to its peripheral zone.
- a first embodiment of the braking means consist of a coating 52 produced on the face internal 50 of the casing using a material with a high coefficient of friction of the less compared to the ground extracted by the auger.
- FIG 4 there is shown a second embodiment in which the internal face 50 of the casing 44 is provided with grooves such as 54 which have a suitable depth. These grooves extend over at least one part of the height of the casing 44.
- FIG. 5 shows a third embodiment of the braking means. These consist of a helix hollowed out at its center 56 and which is integral with the internal wall 50 of the casing 44. This propeller which is fixed causes the desired braking effect when the auger 32 has a rotational movement.
- the propeller 56 is not integral casing 44 but that it can be animated by a different rotational movement of the auger 32's rotational movement. This also gives an effect of braking of the periphery of the ground extracted by the auger.
- the lower auger 44 has an external diameter D 2 which is at least equal to the external diameter D O of the casing 44. It is understood that this promotes the insertion of the casing into the borehole as and when it is made of it. On the other hand, it goes without saying that the diameter D 1 of the upper auger is less than the internal diameter of the casing 44.
- the rotation heads 38 and 42 can be ordered in such a way that the lower auger 34 and the auger upper 32 are rotated in opposite directions.
- the ground extracted by the lower auger 34 will be pumped laterally in the direction of the arrows F in the connection area between the two augers, that is to say at the lower end of the upper auger 32.
- the end lower 32a of the upper auger 32 protrudes from the lower end 44b of the casing with a length L which preferably corresponds to one pitch of the propeller constituting the upper auger 32.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims (10)
- Outil de forage comportant un ensemble formant tarière de forage, des moyens de mise en rotation de l'ensemble formant tarière de forage et un tubage entourant sur une partie de sa longueur l'ensemble formant tarière, caractérisé en ce que ledit tubage comprend sur au moins une partie de sa longueur des moyens pour limiter la vitesse de rotation du terrain extrait par l'ensemble formant tarière à proximité de la face interne dudit tubage par rapport à la vitesse de rotation dudit ensemble formant tarière, par quoi la rotation de l'ensemble formant tarière permet le déplacement vertical du terrain extrait à l'intérieur dudit tubage.
- Outil de forage selon la revendication 1, caractérisé en ce que lesdits moyens de limitation de la vitesse de rotation agissent mécaniquement.
- Outil de forage selon la revendication 2, caractérisé en ce que lesdits moyens de limitation de la vitesse consistent en un revêtement interne dudit tubage apte à produire un coefficient de frottement.
- Outil de forage selon la revendication 2, caractérisé en ce que lesdits moyens de limitation de la vitesse comprennent une hélice ayant le même axe que l'ensemble formant tarière, disposée entre la périphérie de l'ensemble formant tarière et ledit tubage, et fixé ou entraínée en rotation dans le sens inverse du sens de rotation de l'ensemble formant tarière.
- Outil de forage selon la revendication 2, caractérisé en ce que les moyens de limitation de la vitesse comprennent des aspérités sur la face interne dudit tubage.
- Outil de forage selon la revendication 2, caractérisé en ce que lesdits moyens de limitation de vitesse comprennent des cannelures réalisées sur la face interne dudit tubage.
- Outil de forage selon l'une quelconque des revendications 1 à 6, caractérisé en ce que ledit ensemble formant tarière comprend une première tarière supérieure dont l'extrémité inférieure est disposée en dessous de l'extrémité inférieure dudit tubage d'une longueur L et une deuxième tarière, de même axe que la première et disposée en dessous de la première, et en ce que les moyens de mise en rotation comprennent des premiers moyens de mise en rotation de la première tarière et des deuxièmes moyens de mise en rotation de la deuxième tarière.
- Outil de forage selon la revendication 7, caractérisé en ce que ladite longueur L est au moins égale à un pas de l'hélice formée par la première tarière.
- Outil de forage selon l'une quelconque des revendications 7 et 8, caractérisé en ce que le diamètre externe de la deuxième tarière est sensiblement égal au diamètre externe du tubage.
- Outil de forage selon l'une quelconque des revendications 7 à 9, caractérisé en ce que lesdits premiers et deuxièmes moyens de mise en rotation des première et deuxième tarières sont aptes à provoquer la rotation des deux tarières dans des sens opposés.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9911505A FR2798420B1 (fr) | 1999-09-15 | 1999-09-15 | Outil de forage muni d'un tubage |
FR9911505 | 1999-09-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1085166A1 true EP1085166A1 (fr) | 2001-03-21 |
Family
ID=9549846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00402300A Withdrawn EP1085166A1 (fr) | 1999-09-15 | 2000-08-17 | Fleuret hélicoidal |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1085166A1 (fr) |
FR (1) | FR2798420B1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1905945A1 (fr) * | 2006-09-22 | 2008-04-02 | BAUER Maschinen GmbH | Tarière pour excaver un puits dans le sol |
EP2011958A1 (fr) * | 2007-07-06 | 2009-01-07 | BAUER Maschinen GmbH | Tarière |
EP2339107A3 (fr) * | 2009-12-22 | 2011-08-17 | Fredi Stury | Appareil de forage doté d'une vis de forage télescopique, pièce d'adaptateur et procédé de forage pour la réalisation de forages |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0311363A2 (fr) * | 1987-10-05 | 1989-04-12 | Kawasaki Steel Corporation | Pieu creux en acier, méthode de fabrication et méthode pour enfoncer un pieu |
EP0699823A1 (fr) * | 1993-05-14 | 1996-03-06 | Kabushiki Kaisha Komatsu Seisakusho | Dispositif de commande de decharge de terre pour machine de propulsion d'un tube de petit diametre |
-
1999
- 1999-09-15 FR FR9911505A patent/FR2798420B1/fr not_active Expired - Fee Related
-
2000
- 2000-08-17 EP EP00402300A patent/EP1085166A1/fr not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0311363A2 (fr) * | 1987-10-05 | 1989-04-12 | Kawasaki Steel Corporation | Pieu creux en acier, méthode de fabrication et méthode pour enfoncer un pieu |
EP0699823A1 (fr) * | 1993-05-14 | 1996-03-06 | Kabushiki Kaisha Komatsu Seisakusho | Dispositif de commande de decharge de terre pour machine de propulsion d'un tube de petit diametre |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1905945A1 (fr) * | 2006-09-22 | 2008-04-02 | BAUER Maschinen GmbH | Tarière pour excaver un puits dans le sol |
EP2011958A1 (fr) * | 2007-07-06 | 2009-01-07 | BAUER Maschinen GmbH | Tarière |
EP2339107A3 (fr) * | 2009-12-22 | 2011-08-17 | Fredi Stury | Appareil de forage doté d'une vis de forage télescopique, pièce d'adaptateur et procédé de forage pour la réalisation de forages |
Also Published As
Publication number | Publication date |
---|---|
FR2798420B1 (fr) | 2001-12-14 |
FR2798420A1 (fr) | 2001-03-16 |
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