EP2245233B1 - Dispositif et procédé pour réaliser des trous de forage dans la terre, trous de forage dont les coupes transversales se recoupent partiellement - Google Patents

Dispositif et procédé pour réaliser des trous de forage dans la terre, trous de forage dont les coupes transversales se recoupent partiellement Download PDF

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Publication number
EP2245233B1
EP2245233B1 EP09715168.2A EP09715168A EP2245233B1 EP 2245233 B1 EP2245233 B1 EP 2245233B1 EP 09715168 A EP09715168 A EP 09715168A EP 2245233 B1 EP2245233 B1 EP 2245233B1
Authority
EP
European Patent Office
Prior art keywords
borehole
bore
guide element
longitudinal axis
guide
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.)
Not-in-force
Application number
EP09715168.2A
Other languages
German (de)
English (en)
Other versions
EP2245233A1 (fr
Inventor
Hermann Josef Von Wirth
Peter Heinrichs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mhwirth GmbH
Original Assignee
Mhwirth GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE102008010773A external-priority patent/DE102008010773A1/de
Priority claimed from DE200810012970 external-priority patent/DE102008012970A1/de
Application filed by Mhwirth GmbH filed Critical Mhwirth GmbH
Publication of EP2245233A1 publication Critical patent/EP2245233A1/fr
Application granted granted Critical
Publication of EP2245233B1 publication Critical patent/EP2245233B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • 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

Definitions

  • the invention relates to a device for lowering a second bore having a longitudinal axis in the ground, whose cross section crosses the cross section of an already existing first bore partially, wherein the second bore extends at least substantially parallel to the first bore, with a drilling device, the one around the Longitudinal axis of the second bore rotationally driven drill head comprises, and with an operatively connected to the drilling device guide means for guiding the drilling device relative to the already existing first bore, wherein the guide means comprises at least a first guide element which faces with the bore wall of the first bore on the second bore Side interacts.
  • the invention relates to a method for introducing approximately parallel holes in the ground, the cross sections of which partially overlap, with the aid of the device according to the invention.
  • An above device is from the EP 1 770 219 A1 known.
  • this device has second guide elements which abut against the side of the wall of the second bore facing the first bore.
  • Another device for sinking a bore according to the preamble of claim 1 is known from FR 2,852 . 352 A1 known. It comprises a drilling device and a guide device operatively connected to the drilling device. The guide means cooperates with the wall of the bore which is drilled to effect changes of direction of the bore.
  • a device and a method for forming an impermeable wall in the underground are known from US 5,056,242 A known. For this purpose, it is provided to lower a removal device with a drill head, which is rotatable about an axis extending perpendicular to the longitudinal direction of the bore, into an outlet bore. During the lifting of the removal device, an extension of the bore takes place, in which the device is supported with a on the ablation of the opposite side of a previously inserted wall segment.
  • a device for generating side holes from a main bore is from the US 2005/0150692 A1 known. It comprises a drill head, which can be moved laterally out of an existing bore by means of a force-exerting arrangement arranged above it.
  • a device for improving the soil beneath objects for example tanks, is known. It comprises a stirring / mixing device which can be inserted into a primary bore and which can be driven out of the primary bore into earth regions below the article.
  • the sales reaction forces are introduced by means of a support device in the extension of the opposite side wall of the primary bore.
  • the invention is based on the EP 1 770 219 A1
  • the object of the invention to provide a device with which a second hole in the ground with regard to their course more precisely to the position of an existing hole whose cross section is to be partially overlapped, can be introduced.
  • the device according to the invention comprises means with which the direction in which the second bore is introduced can be varied during introduction, the lowering of the second bore is reliable, in particular a running of the second bore out of the longitudinal axes of the first and The second hole spanned plane is prevented.
  • the device comprises a second guide element, which interacts with the side facing away from the second bore of the first bore.
  • the device according to the invention comprises a measuring device for detecting the position of the guide device in the first bore. If displacements of the guide device are detected with this measuring device, then they can signal an unwanted running out of the second bore from the parallel position to the first bore. Such leakage can, for example, by oblique impingement of the drilling device when lowering the second hole on harder soil be conditional.
  • the measuring device thus enables the operator of the device to take appropriate countermeasures in the event of such a signal.
  • the means may comprise supporting elements acting on the drilling device, which may preferably be brought into contact with the wall of the second bore above the drilling device in directions running transversely to the connecting plane, preferably by means of adjusting elements.
  • the adjusting elements can in turn be connected to a first control or regulating device, which in turn is in turn connected to the measuring device. In the event that the measuring device signals an undesired change in position, then those of the adjusting elements can be automatically brought into contact with the wall of the second bore, which are required to achieve a return force.
  • the drilling device comprises a rotary driven drill head and a second control or regulating device for influencing the rotary drive
  • the measuring device can additionally or alternatively be operatively connected to the second control or regulating device.
  • the rotary drive can be influenced with the aid of the second control or regulating device so that a return-directed force is generated.
  • the direction of rotation in which the drill head is driven be reversed, as act through the friction of the drill head in the borehole always transverse to the joint plane directed forces on the drill head.
  • the measuring device may include an electronic inclinometer, also called “Inclinometer”, or else a laser gyro, also called “laser gyro”.
  • the first guide element is configured in such a way that it is suitable for interacting with the first bore in the direction of advance of the second bore in front of the bore of the second bore and below the drill head. Due to this measure, the first guide element can rest against the wall of the first bore over a particularly large area and there is no danger that its guiding function will be lost as a result of breaking in of the connecting region between the adjacent holes.
  • the first guide element is then preferably designed such that it rests on both sides of the plane connecting the longitudinal axes of the first and the second bore, on the wall of the first bore.
  • the two-sided system which may be provided in particular symmetrically to the plane, prevents that by supporting transverse to the plane extending forces arise, which could then exert transverse to the direction of advance moments directed to the drilling device. If such moments are to be feared due to other influences, then on the other hand, the system of the guide element can be selectively selected asymmetrically to the plane so as to generate reversely directed moments for at least partial compensation.
  • the second bore can be introduced as deep as the first bore, it is particularly advantageous to design the first guide element such that it is designed to be displaceable in a directional component parallel to the longitudinal axis of the first bore.
  • the first guide element - particularly preferably - arranged on the leading end in the advancing direction of a length-variable holder. It can then be withdrawn as soon as it reaches the bottom of the first bore, whereupon the second bore can be further advanced until its sole lies approximately in the same plane as that of the first bore.
  • the holder In order to give the holder the required properties, it may in particular be arranged such that its adjustment direction encloses an acute angle with the longitudinal axis of the first bore. In this case, retraction of the first guide element at the same time causes the first guide element to lift away from the bore wall and thus does not constitute an obstacle to the further advance of the second bore.
  • the holder can comprise an electrically, pneumatically or hydraulically operated length adjuster, which can then be activated if, for example, correspondingly provided sensors detect an impact of the first guide element on the sole.
  • the holder with a spring-loaded length adjuster, which presses the first guide element against the wall of the first bore.
  • This variant is characterized in particular by its simple and therefore cost-effective manufacturability and its Störunan perennialkeit.
  • the active control preferably takes place when the guide device is pivoted about the longitudinal axis of the first bore by changing the rotational drive direction to produce a torque acting in the backward pivoting direction.
  • the active control can be generated by a force acting in the return pivoting direction by means of a supporting element acting on the drilling device, which is pressed against the wall of the second bore.
  • a drill head 4 is arranged on the drill pipe 3, which is rotated with the drill pipe 3.
  • dashed channel 5 which seen in the direction of insertion front end opens into the end face 6 of the drill head 4.
  • the second hole 2 is introduced into the soil, that its cross section the cross section of a previously introduced, in Fig. 1 on the right next to the hole 2 shown first hole 1 overlaps.
  • the drill string 3 and the drill head 4 as a whole, denoted 8 as a drilling device are operatively connected to a guide device designated as a whole by 9.
  • the drill string 3 in a segment according to Fig. 1a ) above the drill head 4 in the direction of the longitudinal axis S2 relative to the drill pipe 3 fixedly provided with a support 10 which extends through the opening 11 formed on the basis of the overcut of the first and the second bore 1.2.
  • a holder 12 On the carrier 10, a holder 12 is attached. It is designed in such a multi-part design that it is adjustable in length in the direction of the arrow P by means of a pneumatic cylinder, not shown in the drawing.
  • the adjustment direction with the longitudinal axis S1 includes an acute angle ⁇ .
  • the front in the direction of insertion end of the holder 12 carries a first guide member 13, which is in the extended holder 12 below the bottom hole 7 on the side of the wall of the first bore 1, which faces the second bore 2 rests.
  • the length adjustability of the holder 12 allows the second bore 2 to be inserted as deeply into the ground as the first bore 1 by shifting back the first guide member 13 during the last drilling progress as it contacts the bottom hole 14 of the first bore 1.
  • the further support of the guide means 9 on the wall of the first bore 1 serve second guide elements 14 which are fixed by means of rigid arms 15 on the carrier 10 of the guide means 9.
  • the booms 15 and the second guide elements 14 are designed such that the guide elements lie flat against the bore wall of the first bore in the area facing away from the second bore, as shown schematically in FIG Fig. 1b ) is shown.
  • a measuring device 16 is arranged, by means of which changes in position of the guide device 9 detected and connected via signal lines 17 of a control or regulating device, not shown in the drawing for influencing the rotary drive not shown in the drawing for the drill string.
  • the measuring device 16 and the control or regulating device are matched to one another such that in the case of signals indicative of an undesired change in position, the control or regulating device influences the drive device in such a way that counteracting forces are generated in the second bore 2 of the change in position.
  • FIG Fig. 2 A second embodiment of the device 200 according to the invention is shown in FIG Fig. 2 shown. In order to avoid repetition, only the differences to those based on Fig. 1 discussed device 100 will be described.
  • the measuring device 16 is fastened by means of a separate carrier 18, which is fixed above the carrier 10 on the drill pipe 3 and also fixed to the latter in the direction of the longitudinal axis S2.
  • a separate carrier 18 which is fixed above the carrier 10 on the drill pipe 3 and also fixed to the latter in the direction of the longitudinal axis S2.
  • Within the second bore 2 perpendicular to the connecting plane E between the two bores 1, 2 acting radially outward opposing support members 19, 20 are provided. These are based on in the direction of the arrows Q variable length adjusting elements 21, 22 on the support 18 from.
  • control elements 21, 22 are connected to a control or regulating device, not shown in the drawing, to which the measuring device 16 is connected via the signal lines 17. Signaled the measuring device 16 in operation an undesirable change in position of the guide device 9 and thus of the drill string 3, the support elements 19, 20 are displaced by means of the adjusting elements 21, 22 against the wall of the second bore, that forces in the sense of a back displacement of the guide device. 9 or the drill pipe 3 are effected.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Earth Drilling (AREA)

Claims (15)

  1. Dispositif (100, 200) de forage d'un second trou (2), pourvu d'un axe longitudinal (S2), dans le sol, lequel trou de forage a une section transversale qui chevauche partiellement la section transversale d'un premier trou de forage déjà existant (1), le second trou de forage s'étendant au moins sensiblement parallèlement au premier trou de forage, lequel dispositif comporte
    un moyen de forage (8), qui comporte une tête de forage (4) entraînée en rotation sur l'axe longitudinal (S2) conjointement avec des tiges de forage (3), et
    un moyen de guidage (9) relié fonctionnellement au moyen de forage (8) et destiné à guider le moyen de forage (8) par rapport au premier trou de forage déjà existant (1),
    le moyen de guidage (9) comportant au moins un premier élément de guidage (13) qui interagit avec la paroi du premier trou de forage (1) du côté dirigé vers le second trou de forage (2),
    caractérisé en ce que,
    le dispositif comporte des moyens qui influent sur la direction dans laquelle le second trou de forage est réalisé au cours du forage, et en ce que le premier élément de guidage (13) est conçu de façon à être adapté pour interagir avec le premier trou de forage (1) au-dessous du fond (7) du second trou de forage (2) et au-dessous de la tête de forage (4) par référence à la direction de forage du second trou de forage (2).
  2. Dispositif selon la revendication 1, caractérisé en ce que les moyens comprennent un moyen de mesure (16) destiné à détecter la position du moyen de guidage (9) dans le premier trou de forage (1).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les moyens comprennent des éléments d'appui (19, 20) qui agissent sur le moyen de forage et qui peuvent être amenés en appui sur la paroi du second trou de forage (2) dans une direction qui s'étend transversalement au plan de liaison (E) entre les trous de forage (1, 2) qui contient l'axe longitudinal (S1) du premier trou de forage et l'axe longitudinal (S2) du second trou de forage.
  4. Dispositif selon la revendication 3, caractérisé en ce que les éléments d'appui (19, 20) peuvent être amenés en appui sur la paroi du second trou de forage (2) à l'aide d'éléments de réglage (21, 22), en ce que de préférence les éléments de réglage (21, 22) sont reliés à un premier moyen de commande ou de régulation et en ce que le premier dispositif de commande ou de régulation est relié au moyen de mesure.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le moyen de forage (8) comprend un entraînement en rotation destiné à la tête de forage (4) entraînée en rotation et un second dispositif de commande ou de régulation destiné à influer sur l'entraînement en rotation.
  6. Dispositif selon la revendication 5, caractérisé en ce que le moyen de mesure (16) est relié fonctionnellement au second moyen de commande ou de régulation, et en ce que de préférence le moyen de mesure (16) comprend un inclinomètre électronique et/ou un gyroscope à laser.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le moyen de guidage (9) comprend au moins un second élément de guidage (14) qui interagit avec le côté du premier trou de forage (1) qui est opposé au second trou de forage (2).
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que le premier élément de guidage (13) est conçu de telle sorte qu'il est approprié pour venir en appui, des deux côtés du plan (E), sur la paroi du premier trou de forage (1).
  9. Dispositif selon la revendication 8, caractérisé en ce que le premier élément de guidage (13) est configuré pour être déplaçable dans une direction qui comporte une composante directionnelle parallèle à l'axe longitudinal (S1) du premier trou de forage (1) et qui est disposé de préférence à l'extrémité avant, par référence au sens de forage, d'un support (12) de longueur variable.
  10. Dispositif selon la revendication 9, caractérisé en ce que le support (12) est disposé de telle sorte que la direction, dans laquelle le premier élément de guidage est déplaçable, forme un angle aigu (α) avec l'axe longitudinal (S1) du premier trou de forage (1).
  11. Dispositif selon la revendication 9 ou 10, caractérisé en ce que le support (12) comprend un dispositif de réglage en longueur à actionnement électrique, pneumatique ou hydraulique.
  12. Dispositif selon la revendication 9 ou 10, caractérisé en ce que le support (12) comprend un dispositif de réglage en longueur, sollicité par ressorts, qui presse le premier élément de guidage (13) contre la paroi du premier trou de forage (1).
  13. Procédé dans lequel des trous de forage (1, 2), s'étendant sensiblement en parallèle, sont forés dans le sol, leurs sections transversales se chevauchant partiellement, le procédé comprenant les étapes suivantes consistant à :
    a) forer un premier trou de forage (1) ;
    b) forer un second de forage (2) à l'aide d'un dispositif (100, 200) selon l'une des revendications 1 à 16, la direction dans laquelle le second trou de forage est réalisé étant commandée activement, le premier élément de guidage (13) interagissant avec le premier trou de forage au-dessous du fond (7) du second trou de forage (2) et au-dessous de la tête de forage (4) par référence à la direction de forage du second trou de forage (2).
  14. Procédé selon la revendication 13, dans lequel le moyen de forage (8) comporte une tête de forage (4) entraînée en rotation, caractérisé en ce que la commande active est effectuée de façon à influer sur le moyen d'entraînement en rotation.
  15. Procédé selon la revendication 13 ou 14, caractérisé en ce que la commande active est réalisée sous l'action d'une force agissant dans le sens de pivotement de retour et exercée par des éléments d'appui (19, 20) qui agissent sur le moyen de forage (8) et qui sont pressés contre la paroi du second trou de forage (2).
EP09715168.2A 2008-02-25 2009-02-16 Dispositif et procédé pour réaliser des trous de forage dans la terre, trous de forage dont les coupes transversales se recoupent partiellement Not-in-force EP2245233B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008010773A DE102008010773A1 (de) 2008-02-25 2008-02-25 Vorrichtung und Verfahren zum Einbringen von Bohrungen ins Erdreich, deren Querschnitte sich teilweise überschneiden
DE200810012970 DE102008012970A1 (de) 2008-03-06 2008-03-06 Vorrichtung und Verfahren zum Einbringen von Bohrungen ins Erdreich, deren Querschnitte sich teilweise überschneiden
PCT/EP2009/051784 WO2009106449A1 (fr) 2008-02-25 2009-02-16 Dispositif et procédé pour réaliser des trous de forage dans la terre, trous de forage dont les coupes transversales se recoupent partiellement

Publications (2)

Publication Number Publication Date
EP2245233A1 EP2245233A1 (fr) 2010-11-03
EP2245233B1 true EP2245233B1 (fr) 2016-07-06

Family

ID=42813470

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09715168.2A Not-in-force EP2245233B1 (fr) 2008-02-25 2009-02-16 Dispositif et procédé pour réaliser des trous de forage dans la terre, trous de forage dont les coupes transversales se recoupent partiellement

Country Status (3)

Country Link
US (1) US8662206B2 (fr)
EP (1) EP2245233B1 (fr)
WO (1) WO2009106449A1 (fr)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE22087C (de) E. H. SlEBERT in Berlin, Moritz-Str. 22 Neuerungen in der Betriebsführung eines mit zwei ohne Umkehrung arbeitenden Regeneratoren versehenen Hafenofens
DE833335C (de) 1950-09-20 1952-03-06 Deilmann Bergbau G M B H C Einrichtung zur Bestimmung der Bohrrichtung von Gesteinsbohrloechern waehrend des Betriebes
DE898724C (de) 1952-04-26 1953-12-03 Holzmann Philipp Ag Verfahren zum Herstellen von Bohrpfahlwaenden
US3572450A (en) * 1968-10-04 1971-03-30 Derry R Thompson Well drilling apparatus
US3839871A (en) * 1973-05-14 1974-10-08 Dresser Ind Earthen dam repair
DE3103336C2 (de) 1981-01-31 1982-12-02 Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz Verfahren und Vorrichtung zum Niederbringen von Richtbohrungen
US5056242A (en) 1989-05-12 1991-10-15 Finic, B.V. Underground wall construction method and apparatus
US5103921A (en) * 1991-03-08 1992-04-14 Sidetrack Coring Systems Inc. Coring assembly for mounting on the end of a drill string
WO1995011349A1 (fr) 1993-10-22 1995-04-27 Chemical Grouting Company Ltd. Dispositif excavateur a arbres multiples
EP0649716A1 (fr) 1993-10-26 1995-04-26 CASAGRANDE SpA Fraise pour former joints de diaphragme
DE19950040A1 (de) 1999-10-16 2001-05-10 Dmt Welldone Drilling Services Vorrichtung zum Niederbringen verlaufkontrollierter Bohrungen
FR2852352A1 (fr) 2003-07-10 2004-09-17 Cie Du Sol Installation de forage equipee de moyens de correction de verticalite
US7306056B2 (en) 2003-11-05 2007-12-11 Baker Hughes Incorporated Directional cased hole side track method applying rotary closed loop system and casing mill
ITTO20050682A1 (it) * 2005-09-30 2007-04-01 Soilmec Spa Metodo ed attrezzatura per realizzare un diaframma impermeabile di pali secanti.
JP4573123B2 (ja) 2005-12-14 2010-11-04 清水建設株式会社 地盤改良装置および液状化防止工法

Also Published As

Publication number Publication date
US20100326732A1 (en) 2010-12-30
EP2245233A1 (fr) 2010-11-03
WO2009106449A1 (fr) 2009-09-03
US8662206B2 (en) 2014-03-04

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