EP2553203B1 - Dispositif de forage horizontal - Google Patents

Dispositif de forage horizontal Download PDF

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Publication number
EP2553203B1
EP2553203B1 EP11714933.6A EP11714933A EP2553203B1 EP 2553203 B1 EP2553203 B1 EP 2553203B1 EP 11714933 A EP11714933 A EP 11714933A EP 2553203 B1 EP2553203 B1 EP 2553203B1
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EP
European Patent Office
Prior art keywords
horizontal drilling
rod assembly
rod
mandrel
drilling device
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.)
Active
Application number
EP11714933.6A
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German (de)
English (en)
Other versions
EP2553203A2 (fr
Inventor
Elmar Koch
Sebastian Fischer
Andreas Joachim Hanses
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.)
Tracto Technik GmbH and Co KG
Engie SA
Original Assignee
Tracto Technik GmbH and Co KG
GDF Suez SA
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.)
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Publication date
Application filed by Tracto Technik GmbH and Co KG, GDF Suez SA filed Critical Tracto Technik GmbH and Co KG
Priority to PL11714933T priority Critical patent/PL2553203T3/pl
Publication of EP2553203A2 publication Critical patent/EP2553203A2/fr
Application granted granted Critical
Publication of EP2553203B1 publication Critical patent/EP2553203B1/fr
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Anticipated expiration legal-status Critical

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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
    • E21B7/04—Directional drilling
    • E21B7/046—Directional drilling horizontal drilling
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/20—Combined feeding from rack and connecting, e.g. automatically
    • 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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
    • E21B49/06—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using side-wall drilling tools pressing or scrapers

Definitions

  • the invention relates to a horizontal drilling device.
  • Horizontal drilling devices are used to bring in trenchless construction methods disposal lines in the ground or already existing old lines trenchless exchange.
  • Horizontal drilling devices are widely used, in which a drill head is initially driven obliquely into the soil by means of a drill pipe and, starting from a drilling carriage positioned on the earth's surface, until the drill head reaches the desired drilling depth. Then the drill head is reversed to the horizontal to perform the actual horizontal bore.
  • the target point of such a horizontal bore may be, for example, in a specially excavated target excavation or in a basement or he may also, ie as the starting point, located on the surface, so that the drill head reversed after a certain Bohrfort Kunststoff in an obliquely upward direction is to let the drill head to exit again on the earth's surface.
  • an expander such as a conical expander, to expand the previously created (pilot) bore as the drill string is withdrawn by the borer carriage. It can be provided to attach to the expansion device a newly retracted line to collect these simultaneously with the expansion of the pilot hole in the soil.
  • Horizontal drilling rigs are also used to replace trenchless trenchings buried underground.
  • the drill string is pushed by the drill carriage along the old line (and in particular by an old pipe) and after reaching a destination point, which may for example lie in a maintenance shaft of the sewer, the front end of the drill string connected to a widening device the old line is cut or ruptured during the retraction of the drill pipe, the parts of the destroyed old pipe are displaced radially into the surrounding soil.
  • a new pipe can be pulled into the old pipe.
  • the new pipe can have an outer diameter which corresponds to or even exceeds the outer diameter of the old pipe.
  • Horizontal drilling devices regularly have a linear drive, with which the drill string is driven in the ground and withdrawn. Furthermore, a rotary drive is provided regularly, with which the drill pipe (and thus the associated drilling or expander) can be set in rotation. Through the rotation of the drill head or the expander the propulsion in the soil can be improved.
  • a rotation of the drill head is required in order to be able to control it in the desired drilling direction.
  • the drill heads of such horizontal drilling devices have an asymmetrically shaped (eg bevelled) drill head front which results in lateral deflection of the drill head during movement through the soil. If the drill head is driven in rotation simultaneously with the driving in the soil, the asymmetric Training the drill head has no effect on the straight bore course, because the lateral deflection compensates on average one revolution.
  • Horizontal wellhead drilling rigs are often only suitable for use in out-of-town areas as they must be positioned at a considerable distance from the area because of the tapping path required to achieve the desired depth of drilling in which the bore or the new pipeline is to be introduced into the soil or in which an existing old pipeline is to be replaced. Frequently, space is not available in built-up urban areas.
  • Another disadvantage of such Horizontalbohrvoriquesen is that these - regularly trained as a self-propelled Bohrlafette - horizontal drilling produce considerable land damage that must be eliminated again with a corresponding financial outlay.
  • a horizontal boring machine which is designed for use in small excavation pits with a rectangular cross section of about 70 cm x 40 cm and a depth of about 1 m to 1.5 m.
  • This horizontal drilling device comprises a frame whose dimensions correspond approximately to the cross-sectional dimensions of the excavation and which is lowered into the excavation. One Part of the frame protrudes beyond the upper edge of the excavation.
  • a combined linear / rotary drive is provided, via which a drill string consisting of individual rod sections is driven into the ground.
  • the linear / rotary drive comprises a rotary drive which can be displaced in the horizontal direction within the frame by means of the linear actuator consisting of two hydraulic cylinders.
  • the last rod assembly is fixed non-positively in the rotary drive, for which the rotary drive has jaws.
  • the rod sections which are gradually screwed to the rear end of the already drilled drill string, are fed to the linear / rotary drive via a linkage lift, which is from a rod magazine in the upper, over the edge of the pit extending portion of the frame is arranged, transported to the linear / rotary drive.
  • the linkage comprises a changer motor whose motor shaft is provided with a threaded pin. The threaded pin is screwed into the rear end of a linkage, which is intended for transport to the linear / rotary drive.
  • the linkage can then be transported in a position coaxial with the drilling axis.
  • the changer motor with the threaded pin represents a boom support, in which the rod section is held until it is caught by the rotary drive and connected to the drill string.
  • the boom support is integrated with the rotary drive.
  • the rotary drive then has, for example, a threaded connector, which is screwed into the internal thread of the rear end of a rod section.
  • the rod assembly is then first screwed to the rear end of the drill string and then - as needed - rotates the entire drill pipe during propulsion in the ground.
  • a disadvantage of the DE 196 33 934 A1 known Horizontalbohrvorraum is that due to the coaxial alignment of the changer motor, the new rod assembly and the drill string only relatively short (compared to the length of the frame) short rod sections can be used. The shorter the individual Butt joints are, the more often, however, new rod sections must be attached to the drill pipe in order to introduce the hole with the desired length in the soil. The preparation or release of a rod section is associated with a considerable amount of time.
  • the present invention seeks to provide an improved horizontal drilling.
  • a horizontal drilling should be specified, which allows the use of the longest possible rod sections.
  • the invention is based on the idea to provide as long as possible rod sections for the drill string in order to require for a drilling project with a defined bore length only a few linkage change (ie the attachment or release of a rod section to / from the drill pipe).
  • For drilling devices which - as is known from the DE 196 33 934 A1 is known - are arranged in a pit with small dimensions, the maximum length that may have the rod sections, limited by the dimensions of the pit in the direction of the drilling axis. In such drilling devices, there is also the problem of handling the rod sections during the linkage change.
  • the rod sections are held during the linkage change by the boom support (changer motor with threaded connector). Since this boom support is positioned in a coaxial position behind the rod section, the maximum possible length of the rod sections shortens at least by the length of the boom support.
  • the invention provides to reduce the space requirement of the boom recording itself to a minimum, so that the gained space for an extension of the rod sections is available. This we achieved by the fact that the boom support is designed in the form of a mandrel on which the hollow rod sections of the drill string are attached.
  • the horizontal drilling device comprises a linear drive, a movable by means of the linear drive rotary drive, a drill pipe and a boom support, wherein the drill pipe hollow and the boom support in Form of a receiving mandrel is formed, whereby the drill string is attachable to the mandrel.
  • a boom support in the form of a receiving mandrel also has the advantages over the known in most conventional horizontal drilling threaded connections, that the plugging can run much faster, and, if the mandrel and the corresponding inner cross section of the rod sections - as is preferably provided - a circular cross-section have, the drill string is movable on the mandrel both in the axial and in the rotational direction. As a result, further functions can be realized, as will be apparent from the following description.
  • the receiving mandrel is pivotable between a first layer parallel to the direction of movement of the linear drive and a second layer, which is preferably aligned perpendicular to the first layer.
  • the horizontal drilling device according to the invention can thereby be advantageously provided with a linkage, which is provided for the transport of a rod section of the drill string to the mandrel.
  • the rod assembly is preferably plugged from the linkage pin on the mandrel when the mandrel is in the second position, and the rod assembly can be fed to the rotary drive when the mandrel is in the first position.
  • the boom support has a travel drive in order to be able to move the boom support and the rod section applied thereto in the horizontal direction.
  • the rod assembly can be attached to the rear end of the already drilled in the soil drill string, without having to resort to the linear drive of the horizontal drilling, as is the case with conventional horizontal drilling.
  • the receiving mandrel is hollow and connected thereto a supply for a drilling fluid.
  • the boom support of the horizontal drilling device according to the invention can thus additionally serve as a connection element in order to supply a drilling fluid to the drill pipe or the drill head fastened thereto at the front during drilling.
  • One or more seal (s) on the mandrel can prevent unwanted leakage of the drilling fluid.
  • Due to the preferably provided rotation of the rod assembly on the mandrel can also be realized by the mandrel, the function of a rotary feedthrough, as required for the supply of rotationally driven drill pipe with a drilling fluid.
  • Also for the function of the mandrel as a connection element for a Bohrierikeitszussel preferably provided mobility of the boom support is useful so that they can be tracked during drilling of the drill string.
  • connection for the drilling fluid supply is integrated in a rotary joint of the receiving mandrel. This allows a structurally simple and yet robust integration of Bohrroughkeitszuschreib be achieved.
  • the Fig. 1 shows in an isometric view of a horizontal drilling device 1 according to the invention when introducing a pilot hole in the ground.
  • the horizontal drilling device comprises a cylindrical housing 2, which is partially closed by a cylindrical jacket 3. Functionally, the horizontal boring device 1 or the housing 2 of the horizontal boring device 1 is subdivided into two sections, namely a lower section called a "pit section", which is located inside a excavation pit 4 specially excavated for receiving the horizontal boring device 1. In the pit section of the horizontal drilling device 1, the housing 2 is substantially completely closed by the jacket 3. This prevents that from the wall of the excavation 4 solubilizing soil in the of The housing 2 formed cavity falls into where further functional elements of the horizontal drilling device 1 and in particular a combined linear / rotary drive 5 is located. Otherwise, soil falling into the cavity could contaminate these functional elements, which could impair the function of the horizontal drilling apparatus 1.
  • the housing 2 is partially open in order to give an operator access to a linkage pin 6 extending into this area.
  • the horizontal boring device 1 is positioned "suspended" within the excavation 4, i. this is not supported on the bottom of the excavation 4, but rather on a support device with a total of three support legs 7, which are attached to the longitudinal members 8 of the housing 2 in the region of the surface portion of the horizontal drilling device 1.
  • Each of the support legs 7 can be attached to the respective side member 8 at a total of five different positions.
  • a height adjustment of the suspended in the excavation 4 horizontal drilling 1 done. This height adjustment is important to e.g. to position the located within the pit section linear / rotary drive 5 on the right for the introduction of the pilot hole in the ground height.
  • Each of the support legs 7 further comprises a spindle support, which is connected via a rotary joint with the cross member 10 of the respective support leg 7.
  • the spindle support comprises a threaded rod 11 which has a support leg 12 at its foot end.
  • a handle 13 is provided, via which the threaded rod 11 can be rotated about its longitudinal axis, whereby a longitudinal displacement relative to the threaded rod surrounding the spindle housing 14 is achieved.
  • the spindle supports serve to align the horizontal drilling device 1 within the pit 4 exactly after a first height positioning has already been achieved by the attachment of the support legs 7 to the side rails 8 of the housing 2.
  • the excavation 4 - as well as the housing 2 of the horizontal drilling device 1 - has a cylindrical shape whose inner diameter also corresponds substantially to the outer diameter of the housing 2 of the horizontal drilling device.
  • the jacket 3 of the horizontal drilling device 1 in the area of the pit section is thus more or less directly on the wall of the excavation 4. Due to the extensive agreement of the inner diameter of the excavation 4 and the outer diameter of the housing 2, not only the size of the excavation pit 4 to be excavated can be kept to a minimum, but it can be achieved within the excavation 4 as large as possible and homogeneous support of the horizontal drilling 1. Due to the circular cross-section of the excavation 4 and the housing 2, the support is also independent of the respective rotational orientation (about the longitudinal axis of the horizontal drilling).
  • the excavation 4 was excavated by first with a crown drill (not shown), an annular groove with the required (outer) diameter in the surface seal (asphalt surface) was introduced, which removes dislodged disc-shaped asphalt cover and then the underlying soil by means of a Suction dredger (not shown) was sucked.
  • the suction dredger used for this purpose comprises a suction nozzle, which likewise has a circular cross section.
  • the excavation 4 is excavated slightly lower than necessary in order to allow a height adjustment of the suspended horizontal drilling device 1 within the excavation 4, without causing an accidental placement of the lower end of the horizontal drilling 1 on the pit floor.
  • the horizontal drilling 1 was lowered by means of a crane (not shown) in the pit 4 until the previously secured to the side rails 8 of the housing 2 support legs 7 have contact with the earth's surface. With the help of the crane, the horizontal drilling device 1 was then still rotationally aligned within the excavation by being rotated about its longitudinal axis until the arranged by the arranged within the pit portion of the horizontal drilling 1 linear / rotary drive drilling axis has in the desired starting direction for the pilot hole , On the spindle supports then a fine adjustment of the working height of the horizontal drilling device 1 and within limits of the inclination of the horizontal drilling device 1 with respect to the vertical could be achieved.
  • the horizontal boring device 1 Since the wall of the excavation 4 - in particular when it was excavated by means of a suction dredger - is not uniformly cylindrical, the horizontal boring device 1 according to the invention has in the region of the excavation section a total of four support elements 15 distributed uniformly over the circumference. These support elements 15 comprise support plates 16, which in a retracted position in each case form a section of the cylindrical jacket 3 of the horizontal drilling device. The support plates 16 can each be deflected by means of a hydraulic cylinder 17 in the radial direction to the outside to make a direct contact of the horizontal drilling device 1 with the wall of the excavation 4 in order to safely support these within the excavation 4.
  • Each of the support plates 16 is connected via a first pivot 18 to a first end of a Auslenkhebels 19, which in turn is rotatably supported by a second pivot joint 21 on the housing 2 of the horizontal drilling device 1.
  • a second end of the Auslenkhebels 19 is connected to the head of a piston rod 20 of the hydraulic cylinder 17.
  • a extension and retraction of the hydraulic cylinder 17 thus causes a partial rotation of the Auslenkhebels 19 about the pivot 21, whereby the respective support plate 16 can be deflected radially or withdrawn.
  • End stops 22 prevent the support plate 16 when retracting the hydraulic cylinder 17 penetrates into the interior defined by the shell of the housing.
  • the Fig. 2 shows one of the Fig. 1 corresponding representation of the entire horizontal drilling device 1, but in which a part of the shell 3 is removed in the pit section to make visible the functional elements arranged therein.
  • Fig. 3 to 5 show various views of this portion of the horizontal drilling device 1 in enlarged views. It can be seen that the combined linear / rotary drive 5 is arranged at the lower end of the horizontal drilling device 1 within the housing 2. This serves to propel a composite of individual rod sections 23 drill pipe 24 rotating in the soil.
  • the Fig. 6 shows a partial section through the linear / rotary drive 5 in an isolated from the other elements of the horizontal drilling device 1 representation.
  • the linear drive is formed by two hydraulic cylinders 25.
  • the piston rods 26 of the two hydraulic cylinders 25 pass through the respective cylinder tube 27 completely and are connected at their two ends to the housing 2 of the horizontal drilling device 1.
  • the piston rods 26 each have a centrally disposed piston (not shown), which divides the respectively formed between the cylinder tube 27 and the piston rod 26 annular space into two working chambers, which can be supplied via a hydraulic line 66 with the hydraulic oil.
  • a movement of the respective cylinder tube 27 on the piston rod 26 in one or the other direction is achieved.
  • the movement of the two hydraulic cylinders 25 of the linear drive is synchronized.
  • a rotary drive is arranged between the two cylinder tubes 27 of the linear drive forming hydraulic cylinder 25 and secured thereto.
  • the rotary drive comprises a flange-mounted on a hollow gear 28 motor 29 (in particular a hydraulic or an electric motor).
  • a drive shaft 30 of the motor 29 is connected to a bevel gear 31, which in turn meshes with a toothed ring 32, which in turn is connected via screw 33 with a drive sleeve 34.
  • the drive sleeve 34 is rotatably supported by two roller bearings 35 within a housing 36 of the hollow gear 28. A rotation of the drive shaft 30 of the motor 29 thus causes a rotation of the drive sleeve 34 about its longitudinal axis.
  • This longitudinal axis substantially corresponds to the longitudinal axis of the drill pipe 24 held therein and consequently also to the drilling axis, ie the starting direction of a pilot bore to be introduced or the longitudinal axis of a bore or an old pipe extending in the wall of the excavation 4.
  • a drive ring 37 For transmitting the rotational movement of the drive sleeve 34 and the longitudinal movement generated by the hydraulic cylinders 25 of the linear drive on the drill pipe 34 held in the drill pipe 24 is a drive ring 37 which - fixed in an operating position of the drill string 24 within the driver ring 37 - the drill string 24 positively.
  • the driving ring 37 is mounted in a form-fitting manner within the drive sleeve 34 and can be exchanged in a simple manner by first removes a snap ring 63 from a corresponding groove in the inside of the drive sleeve 34 and then a spacer ring 64 is pulled out of the drive sleeve. The driver ring 37 can then be easily pulled out of the drive sleeve 34.
  • the Fig. 9a and 9b 10a and 10b show, in two views in each case, the two operating positions of the drill pipe 24 within the driver ring 37 relevant to the operation of the horizontal drilling apparatus 1. These two operating positions differ by a 90 ° relative rotation of the driver ring 37 about its longitudinal axis relative to the drill pipe 24.
  • the drill pipe 24 is locked in the drive ring. This locking is achieved by the special shell shape of the rod sections 23 of the drill string 24 and a shape adapted thereto of the central opening of the driver ring 37.
  • Each rod assembly 23 of the drill string 24 has a cylindrical basic shape with a relatively small diameter central portion 38 and two relatively large diameter end portions 39a, 39b.
  • two parallel flats 40 are provided, resulting in a cross section with two parallel straight sides and two opposite arcuate sides.
  • the driving ring 37 forms a passage opening corresponding to this cross section, so that it is possible, provided the driving ring 37 and the rod section 23 guided therein in the in the 10a and 10b Rotational alignment shown arranged to each other are to insert the rod assembly 23 in the through hole of the cam ring 37 and free to move (in the longitudinal direction).
  • cams 42 are formed whose distance is greater than the narrow width (corresponding to the distance between the two straight edges of the through hole of the driving ring) of the through hole of the cam ring 37. These cams 42 strike in the in the Fig. 9a and 9b illustrated locking position at the edges of the driving ring 37 and thus prevent further rotation (clockwise).
  • the middle section 38 of each rod section 23 has a reduced outer diameter in order to achieve a (defined) bending stiffness in relation to the end sections 39a, 39b. This should enable the use of a controllable inclined drilling head. By reversing the drill head 43 in the ground, a sectionally arcuate bore profile is achieved. The drill string 24 must adapt to this arcuate bore, which leads to a corresponding bending stress.
  • the reduced diameter and thus relative to the end portions 39a, 39b relatively flexible middle section 38 of each rod section 23 serves to keep the rod assembly 23 altogether pliable, while at the same time the end portions 39a, 39b, which are particularly vulnerable to breakage, stiff perform.
  • the individual rod sections 23 the linear / Rotary drive 5 are not manually fed. Rather, this is for this an automated rod feed provided, which consists of a rod holder 44, which is arranged at the height of the linear / rotary drive 5, and the linkage pin 6.
  • the rod receiver 44 is in the overall view of Fig. 4 and 5 as well as isolated in the representations of the Fig. 7a, 7b . 8a and 8b shown.
  • the central element of the boom support 44 is a receiving mandrel 45, which is mounted in a bridge 46 which is connected to the cylinder tubes 47 of two further hydraulic cylinders 48.
  • Also in the hydraulic cylinders 48 are those in which the piston rod 49 protrudes from both sides of the cylinder tube 47.
  • the two free ends of the two piston rods 49 are connected to the housing 2 of the horizontal drilling device 1, so that by a corresponding pressurization of the hydraulic cylinder 48 with hydraulic oil, the cylinder tubes 47 can be moved on the stationary piston rods 49 and consequently the boom support 44 in the horizontal direction.
  • the receiving mandrel 45 of the boom receptacle 44 is pivotally mounted within the bridge 46 about a horizontal axis, wherein a pivoting between the two in the Fig. 7a, 7b on the one hand and 8a, 8b on the other hand shown end positions is possible.
  • the pivoting is achieved via a further hydraulic cylinder 50, which is supplied via corresponding hydraulic connections 65 with a hydraulic oil.
  • a receiving carriage 52 which can receive a rod section 23, slidably guided, wherein the receiving carriage 52 is fixed to a run of a drive belt 53 which extends outside of the guide rail 51 and parallel thereto.
  • An upper drive roller of the drive belt 53 is connected to a motor (not shown) for driving the same.
  • a lower guide roller 54 is mounted on an axle 55, which is guided at its two ends on a respective threaded rod 56 and in a respective groove 57. By rotating the threaded rods 56, the vertical position of the lower guide roller 54 can be changed to tension the drive belt 53.
  • the receiving carriage 52 By means of the drive belt 53, the receiving carriage 52 can be moved up and down within the guide rail 51. In this way, a boom section 23, which is used by an operator in a loading station 58 in the surface portion of the horizontal drilling device 1, to the boom support 44 in the pit section - and vice versa - be transported.
  • the Fig. 11 shows in an isolated view of the boom receptacle 44 and the lower part of the linkage pin 6 including the receiving carriage 52, in which a rod section 23 is held.
  • the receiving carriage 52 forms a passage opening into which the rod section 23 can be inserted by the operator in the region of the loading station 58 from the side.
  • the inserted rod assembly 23 is suspended, ie two pairs of projections 59 each form a clearance which is only slightly wider than the diameter of the central portion 38 and narrower than the wider side of the end portions 39a, 39b of the rod section 23 ,
  • One of the projection pairs engages in the locking grooves 41 of the front end portion 39 a, while the second projection pair engages in the central portion 38 of the rod section 23.
  • rod assembly 23 is mounted on the vertically oriented receiving mandrel 45 (see. Fig. 5 [Receiving carriage not shown] and 8a, 8b).
  • the mandrel is then 90 ° in the in the Fig. 4 and 7a, 7b shown horizontal operating position pivoted, whereby the rod assembly 23 is pivoted out of the receiving carriage 52 in the lateral direction.
  • the receiving carriage 52 can then be moved back to the loading station 58, so that a further rod section 23 can be used.
  • a hydraulically actuated cylinder may be provided which is arranged at the end perpendicular to the longitudinal axis of the rod section 23 on the bridge 46.
  • the piston of the cylinder can be extended end into a groove formed on the outside of the rod section 23.
  • the groove has in the direction of the longitudinal axis of the rod section 23 a larger dimension than the retractable into the groove piston, so that although a certain axial clearance between rod section 23 and mandrel 45 is possible, but a Slip is prevented due to the groove engaged with the piston.
  • the piston is retracted into the cylinder or retracted from the groove.
  • the horizontal drilling apparatus 1 is designed to carry out scavenging bores, i. the drilling head 43 arranged on the front side of the drill pipe 24 is supplied via the drill string 24 with a drilling fluid which emerges through front and side outlet openings.
  • the individual rod sections 23 of the drill string 24 are designed to be hollow throughout.
  • the drilling fluid is supplied to the drill pipe 24 via the mandrel 45, which is also designed to be almost continuous hollow. Only at the rear end, i. the projecting from an attached rod assembly 23 end, this is closed by means of a screw 60.
  • the hollow space formed by the hollow mandrel 45, the drilling fluid is supplied via a likewise hollow shaft on which the receiving mandrel 45 is rotatably mounted.
  • the horizontal drilling device 1 is then lowered into the excavation 4, aligned and supported, as already described.
  • the drill head 43 is drilled as far as possible in the ground. Due to the length of the drill head 43, the drilling is carried out with two strokes of the linear drive; at the first stroke, the cam ring 37 is located at the front end of the two parallel flats, so that the pressure forces are transmitted via the trained there paragraph and the torque on the serving as a key surfaces parallel flats. After the first stroke of the linear drive is moved back so that the driving ring 37 engage in the locking grooves and lock the drill head 43. Then the linear drive is again moved forward by one working stroke, whereby the drill head 43 is completely bored. The rotary drive is then in the example in the Fig. 4 and 5 illustrated foremost position.
  • a provided in the region of the passage opening locking fork (not shown) is then shut down.
  • the fork width of the locking fork corresponds to the distance between the two parallel flats of the drill head 43 and the distance between the two locking grooves.
  • the drill bit 43 was aligned by means of the rotary drive so that the two flats of the end portion are aligned vertically, so that the locking fork can drive over the end portion (in a section in front of the locking grooves) of the drill head 43, whereby rotation of the drill head by means of a positive fixation 43 is temporarily prevented.
  • the operator has already used a first rod section 23 in the receiving carriage 52 and attached it to the receiving mandrel 45 by a method of the linkage pin 6. After a pivoting of the mandrel 45 and the attached thereon rod assembly 23 by 90 ° in its horizontal orientation, the rod assembly 23 is in a largely coaxial position to the already drilled bit 43.
  • the two hydraulic cylinders 48 of the rod holder 44 can then the front Threaded plug of the rod assembly 23 are moved up to the rear threaded bushing of the drill head 43.
  • the driving ring 37 is then released from the locking grooves of the drill head 43 and the linear / rotary drive 5 is moved back so far that this is located in a defined region of the front end portion 39 a of the first rod section 23.
  • the first linkage 23 is with screwed to the fixed by the locking fork in the direction of rotation drill head 43, wherein the torque on the parallel flats 40 is transmitted.
  • the driving ring 37 is not yet locked in the locking groove 41, the rod section can be displaced relative to the driving ring 37 during screwing in the longitudinal axial direction.
  • the longitudinal movement of the rod section 23 required for screwing the rod section 23 can be realized without a complex length compensation realized by the linear drive.
  • the position of the rotary drive during the screwing is chosen so that the locking grooves 41 of the front end portion 39 a are after complete screwing of the rod assembly 23 with the drill head 43 within the driving ring 43 so that this directly by a 90 "rotation, ie without that a further method of the linear drive is required, can engage in the locking grooves 41, to fix the rod assembly 23 in the longitudinal direction.
  • the drill string is then drilled so far until the rotary drive has returned to its front end position.
  • the rotary drive is unlocked by a 90 ° rotation (in the opposite direction) of the driver ring and moved back by means of the hydraulic cylinder 25 of the linear drive until the driver ring 37 can engage in the locking grooves 41 of the rear end portion 39b of the first rod section 23; There, the driving ring 37 is locked again by a 90 ° rotation. Then the drill string, consisting of drill head 43 and first rod assembly 23 is driven by the use of the linear / rotary drive 5 by a further working stroke of the linear drive further into the soil.
  • the locking grooves 41 of the front end portion 39a of the first linkage 23 are below the locking fork, which can then be lowered to fix the drill string while the second linkage 23 is bolted to the existing drill string.
  • the second rod assembly 23 is moved up by means of the rod holder 44 to the rear end of the first rod assembly 23.
  • the rotary drive is released from the first linkage 23 and moved so far to the rear that this at the parallel flats 40 can engage in the front end portion 39 a of the second rod section 23.
  • the second rod section 23 is then screwed to the first rod section 23, wherein after completing the screwing of the cam ring 37 is locked again in the locking grooves 41 of the front end portion 39 a of the second rod section and the drill string back to the Reaching the front end position (of the linear drive) is bored.
  • the linear / rotary drive 5 is then released by a 90 "relative rotation of the drive ring 37 of the second rod section 23 and moved back to lock the second rod section 23 in the rear end portion 39 b and the drill string again to another stroke in to drive the soil.
  • the locking fork always engages in the locking grooves 41 of the rod sections 23 in order to secure this or the drill string not only rotationally but also against longitudinal movement. As a result, it is possible to prevent the drill string from shifting unintentionally due to elastic re-deformations of the compressed soil and of the drill string compressed or stretched by the loads.
  • the preparation and Verbohren further rod sections 23 is then carried out in an identical manner.
  • pilot bore After the pilot bore has been completed, it may be provided to replace the drill head 43 by a widening device (not shown) to widen the bore during retraction of the drill string.
  • a neural tube (not shown) or other supply line (not shown) may be attached to the expander head, which is retracted into the bore simultaneously with the expander.
  • the driving ring 37 of the rotary drive is locked in the locking grooves 41 of the rear end portion 39 b of the last rod section 23.
  • the rotary drive is moved by a process of the hydraulic cylinder 25 of the linear drive to the rear.
  • the locking fork is then moved down and fixes the penultimate rod assembly 23 by this in the locking grooves 41 of the rear end portion 39 b of this rod section 23 engages.
  • the linear / rotary drive is then released by a 90 ° rotation of the driving ring of the rod section 23 and moved forward again until the driving ring 37 engage in the locking grooves of the front end portion 39a of the last rod section 23 can.
  • the drill string 24 is pulled out of the ground so far that the locking fork can lock the penultimate rod section 23 in the front end portion 39a. Then the last rod section 23 can be unscrewed from the penultimate rod section 23 by a rotation of the drive sleeve 34 in the counterclockwise direction. Due to the particular shape of the rod section in the region of the end sections, a torque for releasing the threaded connection can be transmitted without the carrier ring 37 being fixed in the locking groove 41 also in the longitudinal axial direction. This allows the driving ring 37 slide when unscrewing the rod assembly 23 according to the thread pitch over the rod section, whereby a length compensation on the linear drive can be avoided.
  • the horizontal drilling device shown is particularly suitable for use in inner city areas and in particular for the creation of domestic connections in the supply area (in particular gas, water, electricity, glass fiber, etc.). Drill holes of up to 20 meters in length can be drilled and used to retract pipes or cables with an outside diameter of up to 63 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Claims (5)

  1. Dispositif (1) de forage horizontal, comprenant un entraînement linéaire, un entraînement en rotation déplaçable au moyen dudit entraînement linéaire, un train de forage (24) et un réceptacle (44) dévolu audit train, lequel train de forage (24) comporte des tronçons (23) de configuration creuse, caractérisé par le fait que le réceptacle (44), dévolu au train, est réalisé sous la forme d'un mandrin de réception (45), de telle sorte qu'un tronçon (23) dudit train puisse être emboîté sur ledit mandrin de réception (45), lequel mandrin de réception (45) peut être animé de pivotements entre une première position parallèle à la direction de mouvement de l'entraînement linéaire, et une seconde position, sachant que ledit dispositif (1) de forage horizontal est par ailleurs équipé d'un élévateur (6) affecté au transport d'un tronçon (23) du train vers le mandrin de réception (45) ; que ledit tronçon (23) dudit train peut être emboîté sur ledit mandrin de réception (45), par ledit élévateur (6), lorsque ledit mandrin occupe la seconde position ; et que ledit tronçon (23) dudit train peut être délivré à l'entraînement en rotation lorsque ledit mandrin de réception (45) se trouve dans la première position.
  2. Dispositif de forage horizontal selon la revendication 1, caractérisé par le fait que la seconde position est orientée, pour l'essentiel, perpendiculairement à la première position.
  3. Dispositif de forage horizontal selon la revendication 1 ou 2, caractérisé par le fait que le réceptacle (44), dévolu au train, présente un entraînement en déplacement.
  4. Dispositif de forage horizontal selon l'une des revendications précédentes, caractérisé par le fait que le mandrin de réception (45) est de réalisation creuse, une amenée d'un fluide de forage étant raccordée audit mandrin.
  5. Dispositif de forage horizontal selon la revendication 4, caractérisé par le fait que le raccord, destiné à l'amenée, est intégré dans une articulation tournante du mandrin de réception.
EP11714933.6A 2010-03-31 2011-03-31 Dispositif de forage horizontal Active EP2553203B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11714933T PL2553203T3 (pl) 2010-03-31 2011-03-31 Urządzenie do wiercenia poziomego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010013724.3A DE102010013724B4 (de) 2010-03-31 2010-03-31 Horizontalbohrvorrichtung
PCT/EP2011/001617 WO2011120697A2 (fr) 2010-03-31 2011-03-31 Dispositif de forage horizontal

Publications (2)

Publication Number Publication Date
EP2553203A2 EP2553203A2 (fr) 2013-02-06
EP2553203B1 true EP2553203B1 (fr) 2014-07-02

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EP11714933.6A Active EP2553203B1 (fr) 2010-03-31 2011-03-31 Dispositif de forage horizontal

Country Status (8)

Country Link
US (1) US9347267B2 (fr)
EP (1) EP2553203B1 (fr)
JP (1) JP5808389B2 (fr)
CN (1) CN103154417B (fr)
DE (1) DE102010013724B4 (fr)
ES (1) ES2511115T3 (fr)
PL (1) PL2553203T3 (fr)
WO (1) WO2011120697A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010013723A1 (de) 2010-03-31 2011-10-06 Gdf Suez Verfahren zum Betrieb einer Horizontalbohrvorrichtung und Horizontalbohrvorrichtung
CN206299341U (zh) * 2016-10-14 2017-07-04 北京理工大学 一种小尺寸定向钻孔设备
CN107401408B (zh) * 2017-08-25 2023-09-26 双菱集团有限公司 多方位劈裂装置
EP3882398B1 (fr) * 2020-03-17 2023-08-23 BAUER Maschinen GmbH Tige de forage et procédé pour mise à niveau d'un agencement de tige carrée

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Also Published As

Publication number Publication date
ES2511115T3 (es) 2014-10-22
WO2011120697A2 (fr) 2011-10-06
EP2553203A2 (fr) 2013-02-06
JP5808389B2 (ja) 2015-11-10
PL2553203T3 (pl) 2015-03-31
CN103154417A (zh) 2013-06-12
DE102010013724A1 (de) 2011-10-06
US9347267B2 (en) 2016-05-24
CN103154417B (zh) 2015-08-19
JP2013527343A (ja) 2013-06-27
WO2011120697A3 (fr) 2012-12-20
US20130105225A1 (en) 2013-05-02
DE102010013724B4 (de) 2015-09-24

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