EP2946061B1 - Dispositif d'évacuation de déblais de forage - Google Patents

Dispositif d'évacuation de déblais de forage Download PDF

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Publication number
EP2946061B1
EP2946061B1 EP13802242.1A EP13802242A EP2946061B1 EP 2946061 B1 EP2946061 B1 EP 2946061B1 EP 13802242 A EP13802242 A EP 13802242A EP 2946061 B1 EP2946061 B1 EP 2946061B1
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EP
European Patent Office
Prior art keywords
receiving
drilling
receiving body
bypass
pump
Prior art date
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Active
Application number
EP13802242.1A
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German (de)
English (en)
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EP2946061A2 (fr
Inventor
Tobias GERHARDT
Michael LUBBERGER
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Herrenknecht AG
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Herrenknecht AG
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Publication date
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Publication of EP2946061A2 publication Critical patent/EP2946061A2/fr
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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
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring
    • 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
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes

Definitions

  • the invention relates to a device for conveying away from a drilling tool when creating a well for laying a pipeline cuttings with at least one pump for pumping a mixed with the cuttings drilling fluid and at least one receiving body with at least one receiving chamber, the openings via a cuttings area behind the drilling tool is connected.
  • Such a device is out US 5,269,384 known.
  • This document discloses a method of a device for expanding and cleaning a borehole.
  • a pilot hole is produced by means of an HDD bore.
  • a reamer is attached to the pilot drill string.
  • a pipeline is provided, which substantially corresponds to the diameter of the pilot drill string.
  • a liquid jet pump is provided which is driven by drilling slurry flowing in the drill string. Due to the vacuum created on the suction side of the pump, the cuttings are sucked in behind the reamer and transported away through the pipeline.
  • the device comprises a substantially cylindrically shaped receiving body with a receiving chamber.
  • the receiving body comprises on its outside openings which allow passage of the drilling suspension with the cuttings.
  • the passage is made by sucking the liquid with the cuttings by the existing in the liquid jet pump vacuum.
  • the object of the invention is therefore to provide a device for removing cuttings, with which it is possible to reliably remove the drill cuttings via a hydraulic delivery.
  • the solution of the invention provides that in the receiving body, a receiving element for mechanically receiving the cuttings is provided on which at least a portion of the openings are arranged, via which the cuttings passes into the receiving chamber.
  • the advantage here is that the cuttings are not sucked, but passes through a mechanical recording in the receiving chamber, from which it can then be hydraulically carried away. It is also advantageous that the size of the openings corresponds to the maximum grain size, which is conveyed by the pump. As a result, a classification of the cuttings is achieved in a simple manner.
  • a further teaching of the invention provides that the surface of the openings is designed so that the cuttings, preferably without suction or with low flow velocity, can pass through the opening. As a result, appropriate caking of the opening walls and a fixed eyes are avoided by too large Bohrklein.
  • Another teaching of the invention provides that in the receiving chamber, a suction port for hydraulic suction of cuttings in the pump is provided. This makes it possible in a simple manner, to ensure the removal from the receiving chamber itself.
  • Another teaching of the invention provides that at least two receiving elements are provided and / or at least two receiving chambers are provided. By increasing the number of receiving elements and receiving chambers, the discharge efficiency of the device is improved.
  • a further teaching of the invention provides that the receiving body is a buoyancy body with at least one air-filled section. As a result, less ballast acts on the drill string, so that a drop is reduced. Furthermore, less pressure acts on the ground and the torque produced by the device according to the invention is reduced.
  • a further teaching of the invention provides that the diameter of the receiving body substantially corresponds to the diameter of the respective borehole to be drilled. As a result, the drilling tool experiences a better centering in the borehole.
  • the receiving body has at least one bypass for bypassing the receiving body. It is particularly preferred that the bypass has a spirally and / or straight running section, and / or that the bypass is arranged on the back of the receiving element, and / or that the bypass is arranged on the outside of the receiving body.
  • the bypass channels different deployment modes of the device according to the invention are possible.
  • the placement of the bypass on the back of the receiving elements makes it difficult to unwanted passage of the cuttings through the bypass into the underlying wellbore.
  • the provision of a bypass that allows cuttings, not can pass through the openings can pass through the bypass into the hole located behind it.
  • a further teaching of the invention provides that the bypass at the back of the receiving body has a receiving tool, and / or that the bypass has a shape that minimizes the passage of cuttings in the drilling operation and promotes the passage of cuttings in the expansion drive.
  • This is preferably a helical bypass whose bending has a direction opposite to the direction of rotation of the drilling operation.
  • the pump is a liquid jet pump. It is particularly preferred that the liquid jet pump has a nozzle, a diffuser and a mixing chamber, wherein the nozzle relative to the diffuser for closing the mixing chamber is designed to be movable. This makes it possible to flush closures within the drill string through which the drilling slurry mixed with cuttings is removed.
  • the receiving element has a receiving tool, which is preferably carried out releasably.
  • the receiving body is detachably arranged on the pump, so that the receiving body is replaceable depending on the diameter of the borehole to be created.
  • the receiving element is releasably arranged on the receiving body, so that the receiving element is replaceable depending on the soil in which the borehole is to be created, and / or that a receiving tool arranged on the receiving tool is detachably arranged. Due to the solubilities, the device according to the invention can be easily adapted to the respective borehole sizes or ground conditions.
  • the drilling tool is arranged on a drilling device and / or on the receiving body, preferably on the receiving element.
  • Another teaching of the invention provides a drilling apparatus with a device of the type described above.
  • a further teaching of the invention provides for the use of a previously described device with drilling tools arranged thereon as a drilling device.
  • Fig. 14 shows the use according to the invention of a device according to the invention 10.
  • a ground 100 below ground, both solid and loose rock is understood
  • a pipeline (not shown) is introduced into the borehole 101, 102 into the borehole 101, 102.
  • a drilling rig 110 is provided to create the borehole 101, 102.
  • a drill bit (not shown) is advanced along drill line 106 of borehole 101, 102 with a drill string 111 from a starting point 103 to a target point 104 by advancing the drill bit (not shown) by successively installing new drill string sections.
  • a boring device 112 is attached to the drill string 111.
  • the drilling device 112 is composed of a drill head 113 and the device 10 according to the invention.
  • another drill string 114 is attached to the drilling device 112.
  • the drilling apparatus 112 is withdrawn along the drilling line 106, for example, from the target point 104 to the starting point 103.
  • the first drill string 111 is successively removed and the second drill string 114 is installed accordingly.
  • the boring device 112 is provided with a boring head 113 whose diameter corresponds either to the final diameter of the borehole 101, 102, or boring devices of different sizes are used in succession to drill the borehole 101, 102 in several passes widen desired diameter.
  • the pipeline (not shown) to be laid is then introduced into the borehole 101, 102.
  • the borehole 101, 102 is filled with a drilling suspension 115.
  • the task of the drilling suspension 115 is to keep the borehole 101, 102 open and at the same time to remove the cuttings loosened from the boring device 112 from the borehole.
  • the method described here is called Horizontal Directional Drilling (HDD).
  • Fig. 1 shows the device 10 according to the invention.
  • the device 10 comprises a receiving body 11 and a pump 12.
  • receiving elements 13 are provided, which are provided with openings 14.
  • the openings 14 are located on a radially outwardly curved receiving surface 15.
  • guide elements 16 are provided, via which a better feeding of the cuttings to the openings 14 is achieved.
  • the guide elements 15 are designed as sheets. These can be adapted depending on the soil / rock to be loosened.
  • a receiving chamber 17 Inside the receiving element 13 is a receiving chamber 17 (see Fig. 7 ), which is connected to a suction port 18 to the interior of the receiving body 11 out.
  • the receiving chamber 17 is formed by a chamber rear wall 19, an end wall 21 of the receiving body 21, a cylinder wall 22 of the receiving body 11 and a chamber side wall 20, which forms a front surface, and the receiving surface 15.
  • the suction port 18 extends through the end wall 21 therethrough.
  • the receiving body 11 itself is formed by the end wall 21, on which the receiving elements 13 are located, and the cylinder wall 22 and a corresponding rear wall 23.
  • an opening 24 (see Fig. 4 ) intended. Radially around the opening 24 around holes 25 are provided.
  • receiving tools 40 are provided, which are integrated either in the cylindrical surface 22 in which a portion 41 is made bevelled in front of the exception surface 15, or as a separate receiving tool member 42, also with a chamfered portion 41, in front of the receiving surface 15 integrated in a recess 43 arranged in the cylindrical surface 22, are executed.
  • the picking tools 40 the use as a broaching tool without combination with a drill head 113 is possible to remove deposited cuttings from the borehole 101, 102 in a special clearing step. Both variants are in Fig. 1 shown.
  • the picking tools 40 may also be designed as drilling tools (not shown). This is not shown in the drawings.
  • a drain for drilling suspension (not shown) must be provided on the drill string 111 or on the drill string connection 28 in order to supply drilling slurry to the drilling area.
  • bypass 26 In the cylinder wall 22 of the receiving body 11 are bypass 26, either straight or curved (see Fig. 5 ) are executed.
  • the bypass 26 extends over the entire length of the cylinder wall 22.
  • the bypass 26 is disposed behind the chamber rear wall 19 to prevent entry of the cuttings into the bypass 26 during normal operation of the device 10.
  • recording tools (not shown) may be provided for receiving soil or cuttings with which this / this is taken when removing the device 10 in the borehole 102 and passed into the bypass and then the receiving body 11 over the bypass 26 is conveyed through into the cuttings area 117.
  • the bypass 26 is designed to be spiral-shaped or curved in order to promote the transport of the soil / cuttings from the borehole 102 into the cuttings area 117.
  • the device 10 includes a pump 12, which is designed in the present embodiment as a so-called liquid jet pump 27.
  • the pump 12, 27 each comprise a drill string connection 28, 29 for the drill string 111, 114.
  • a middle part 30 of the pump 27 is a nozzle 32 and suction ports 33 for connection to the suction port 18 of the receiving chamber 17 .
  • Behind the mixing tube 34 is followed by a diffuser 35.
  • the Bohrstrangan say 28, 29 are connected to the central part 30 via flanges 36, 37.
  • the suction ports 33 are also provided with a flange 38 which serves to connect to the suction port 18 of the receiving chamber 17.
  • the Mitteilteil 30 of the pump 12, 27 is inserted into the opening 34. Via the flanges 36, 37, the drill string connections 28, 29 are connected to the middle part 30 of the pump 12 via bolts 39.
  • Fig. 6 shows the nozzle 32 in the normal operating position, so that the mixing chamber 31 is in hydraulic communication with the mixing tube 34 and the suction ports 33.
  • Fig. 7 the nozzle 32 is moved into the mixing chamber 31, so that it is in communication with the mixing tube 34, so that there is a hydraulic separation between the mixing tube 34 and the mixing chamber 31 and the associated suction ports 33.
  • the nozzle is acted upon by a spring (not shown) and secured with a bolt (not shown). If a limit pressure acting on the nozzle via the drilling fluid is exceeded, the bolt is released and the nozzle 32 is advanced against the spring. If the pressure in the liquid drops again, the spring moves the nozzle 32 back to the starting position.
  • a buoyancy space 44 is provided inside the receiving body 11, a buoyancy space 44 is provided.
  • FIGS. 8 to 13 show various operating states in connection with the device 10 according to the invention.
  • the nozzle 32 In normal operating condition ( Fig. 8 ), the nozzle 32 is in the open position.
  • the drilling slurry 115 flows through the interior 116 of the drill string 111 to the drilling apparatus 112 and exits the drill head 113 via nozzles (not shown).
  • the drilling suspension 115 By the drilling suspension 115, the cuttings are washed away at the point of engagement of the drill head 113 with the bottom 100 and enters a Bohrklein Scheme 117 behind the drill bit 113.
  • the device 10 Behind the drill bit 113, the device 10 is arranged consisting of pump 12 and receiving body 11. About the receiving elements 13, the cuttings are mechanically received, for example via the recording tools 40 and passes through the openings 14 at the receiving surfaces 15 therethrough and enters the receiving chamber 17.
  • a portion of the drilling slurry 115 is passed through the drill head 113 and passes over the Bohrstrangan gleich 28 in the pump 12, 27.
  • the nozzle 32 Through the nozzle 32, it is accelerated through the mixing chamber 31 into the mixing tube 34, whereby in the mixing chamber 31, a negative pressure, so that the cuttings located in the receiving chamber 17 together with the drilling suspension located there 115 sucked into the mixing chamber 31 via the suction port 18 and the suction port 33 is and is carried along by the accelerated by the nozzle 32 Bohrsuspension in the mixing tube 34. Subsequently, it is conveyed through the interior 118 of the drill string 114 after passing through the diffuser 35 from the wellbore 101, 102.
  • Fig. 9 shows the operating state of the prior art, in which a use of a drill head without the device 10 takes place.
  • the drilling suspension is delivered to the drill head 113 and introduced from there together with the drill cuttings into the borehole 102, from where the borehole suspension 115 together with the drill cuttings exits the borehole at low speed. This is the usual HDD drilling process.
  • Fig. 10 shows the use of the device 10 without drill head 113 as a clearing insert. This insert is used to clean the well as such.
  • the drilling suspension exits the drill string 111 and passes as for Fig. 8 described, via the receiving elements 13 through the openings 14 in the receiving chambers 17 and sucked from there via the pump 12, 27 into the mixing chamber 31 and further into the mixing tube 34, from where it then discharged into the interior 116 of the drill string 114 and from the Borehole 101, 102 is conveyed away.
  • Fig. 11 shows a special case in which a blockage 119 exists within the interior 118 of the drill string 114.
  • the nozzle 32 as in Fig. 7 represented, moved by the pressure increase in the interior 116, 118 against the mixing tube 34 and the mixing chamber 31 is closed with it.
  • the drilling suspension 115 located in the inner space 116 of the drill string 111 is completely pumped into the pump 12 and accelerated accordingly there, so that the congestion 119 is released, if necessary, while the pump pressure in the pump (not shown) in the drilling rig 110 is increased at the same time the interior 118 of the drill string 114 is removed.
  • Fig. 12 shows a further special case in which the openings 14 of the receiving elements 13 must be cleaned.
  • a valve (not shown) which is closed. This can the drilling suspension 115 are no longer moved through the interior 118 of the drill string 114. This results in a flow reversal in the mixing chamber 31, so that the drilling suspension takes place through the suction port 33 into the suction port 18 and from there into the receiving chamber 17. From here, the drilling slurry 115 passes through the openings 14 into the cuttings area 117. In this there is an increase in pressure within the drilling slurry 115 and then flows through the bypass 26 on the receiving body 11 into the wellbore 102. This makes it possible to free the openings 14 by appropriate pressure adjustment and backwashing of closures and contaminants.
  • Fig. 13 shows the case where the device 10 is used as a drilling device. This case corresponds to the one in Fig. 8 shown with the difference that the soil is solved by drilling tools (not shown) and is conveyed away directly via the receiving element 13.
  • Fig. 15 further shows a construction site facility on the side from which at the end of the bore, the pipe (not shown) is introduced.
  • the drilling fluid 115 is removed from the drill string 114.
  • a carriage 120 is positioned on a carriage 121.
  • the carriage 120 has a built-in pivot (not shown) and is constructed to intercept rotational movement (torsional forces) from the drill string 114.
  • the drilling fluid 115 is guided via a hose 122 and a hose guide 123 of the carriage 121.
  • the carriage 120 is pulled up by means of a winch 124 in conjunction with a drive 127 and the new pipe section 126 can be mounted.
  • a clamping unit 125 ensures that the pipe section to be mounted is held fast and that the necessary torque for closing a thread 128 can be applied via the drilling rig 110.
  • the carriage 121 can be adapted via an adjustable substructure of the inclination of the drill string 114.
  • the carriage 121 also includes the necessary measuring equipment (not shown) such as flow meter, pressure sensor necessary to control the system.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Claims (15)

  1. Dispositif d'évacuation de déblais de forage détachés par un outil de forage (113) lors de la réalisation d'un trou de forage (101, 102) pour la pose d'une canalisation, le dispositif comprenant au moins un corps de réception (11) doté d'au moins une chambre de réception (17) qui est reliée, par le biais d'ouvertures (14), à une zone de déblais de forage (117) derrière l'outil de forage (113), caractérisé en ce qu'un élément de réception (13) servant à recevoir mécaniquement les déblais de forage lors de la rotation du corps de réception (11) est prévu sur le corps de réception (11), élément de réception sur lequel est disposée au moins une partie des ouvertures (14) par le biais desquelles les déblais de forage atteignent la chambre de réception (17), en ce qu'une pompe (12) servant à pomper un liquide de forage (115) mélangé aux déblais de forage est prévue, et en ce qu'une ouverture d'aspiration (18) servant à aspirer hydrauliquement les déblais de forage dans la pompe (12) est prévue dans la chambre de réception (17).
  2. Dispositif selon la revendication 1, caractérisé en ce que la surface des ouvertures (14) est configurée de telle sorte que les déblais de forage peuvent passer à travers les ouvertures (14).
  3. Dispositif selon la revendication 1, caractérisé en ce que la surface des ouvertures (14) est configurée de telle sorte que les déblais de forage peuvent passer sans aspiration à travers les ouvertures (14) .
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'au moins deux éléments de réception (13) sont prévus, et/ou en ce qu'au moins deux chambres de réception (17) sont prévues.
  5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le corps de réception (11) est un flotteur comprenant au moins une partie remplie d'air.
  6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le diamètre du corps de réception (11) correspond sensiblement au diamètre du trou de forage (101, 102) à forer respectivement.
  7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le corps de réception (11) comprend au moins une dérivation (26) servant à contourner le corps de réception (11) .
  8. Dispositif selon la revendication 7, caractérisé en ce que la dérivation (26) comprend une partie en forme de spirale et/ou réalisée de manière rectiligne, et/ou en ce que la dérivation (26) est disposée sur le côté arrière (19) de l'élément de réception (13), et/ou en ce que la dérivation (26) est disposée sur le côté extérieur du corps de réception (11).
  9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que la dérivation (26) sur le côté arrière (23) du corps de réception (11) comprend un outil de réception, et/ou en ce que la dérivation (26) présente une forme qui réduit au minimum le passage de déblais de forage lors du fonctionnement de forage et qui favorise le passage de déblais de forage lors du fonctionnement d'extraction.
  10. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la pompe (12) est une pompe à jet de liquide et/ou en ce que la pompe (12) est une pompe à jet de liquide (12) qui comprend une buse (32), un diffuseur (35) et une chambre de mélange (31), la buse (32) étant réalisée de manière mobile par rapport au diffuseur (35) pour fermer la chambre de mélange (31).
  11. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'élément de réception (13) comprend un outil de réception (40) ou un outil de réception (40) réalisé de manière amovible.
  12. Dispositif selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'outil de forage (40, 113) est disposé sur un dispositif de forage (112), sur le corps de réception (11) et/ou sur l'élément de réception (13).
  13. Dispositif selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le corps de réception (11) est disposé de manière amovible sur la pompe (12), de telle sorte que le corps de réception (11) puisse être remplacé en fonction du diamètre à réaliser du trou de forage (102) .
  14. Dispositif selon l'une quelconque des revendications 1 à 13, caractérisé en ce que l'élément de réception (13) est disposé de manière amovible sur le corps de réception (13), de telle sorte que l'élément de réception (13) puisse être remplacé en fonction du sol (100) dans lequel le trou de forage (101, 102) doit être réalisé, et/ou en ce qu'un outil de réception (40) disposé sur l'élément de réception (13) est disposé de manière amovible.
  15. Utilisation d'un dispositif (10) selon l'une quelconque des revendications 1 à 14 en tant que dispositif de forage.
EP13802242.1A 2013-01-18 2013-11-28 Dispositif d'évacuation de déblais de forage Active EP2946061B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013000771.2A DE102013000771A1 (de) 2013-01-18 2013-01-18 Vorrichtung zum Abfördern von Bohrklein
PCT/EP2013/003594 WO2014111104A2 (fr) 2013-01-18 2013-11-28 Dispositif d'évacuation de déblais de forage

Publications (2)

Publication Number Publication Date
EP2946061A2 EP2946061A2 (fr) 2015-11-25
EP2946061B1 true EP2946061B1 (fr) 2019-04-24

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EP13802242.1A Active EP2946061B1 (fr) 2013-01-18 2013-11-28 Dispositif d'évacuation de déblais de forage

Country Status (7)

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US (1) US10081992B2 (fr)
EP (1) EP2946061B1 (fr)
AU (1) AU2013373842B2 (fr)
CA (1) CA2897547C (fr)
DE (1) DE102013000771A1 (fr)
RU (1) RU2637685C2 (fr)
WO (1) WO2014111104A2 (fr)

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DE102021125909B4 (de) 2021-10-06 2023-11-09 Herrenknecht Aktiengesellschaft Aufweitungsbohrvorrichtung

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Publication number Publication date
WO2014111104A2 (fr) 2014-07-24
RU2637685C2 (ru) 2017-12-06
AU2013373842B2 (en) 2016-11-24
US10081992B2 (en) 2018-09-25
CA2897547A1 (fr) 2014-07-24
WO2014111104A3 (fr) 2015-05-28
CA2897547C (fr) 2017-08-29
RU2015134399A (ru) 2017-02-28
US20160002990A1 (en) 2016-01-07
EP2946061A2 (fr) 2015-11-25
AU2013373842A1 (en) 2015-08-06
DE102013000771A1 (de) 2014-07-24

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