EP4073341A1 - Dispositif de raccordement d'une tige de forage au mécanisme d'entraînement de forage d'une installation de forage, et ensemble de forage pour trous de forage comprenant un tel dispositif - Google Patents

Dispositif de raccordement d'une tige de forage au mécanisme d'entraînement de forage d'une installation de forage, et ensemble de forage pour trous de forage comprenant un tel dispositif

Info

Publication number
EP4073341A1
EP4073341A1 EP20824526.6A EP20824526A EP4073341A1 EP 4073341 A1 EP4073341 A1 EP 4073341A1 EP 20824526 A EP20824526 A EP 20824526A EP 4073341 A1 EP4073341 A1 EP 4073341A1
Authority
EP
European Patent Office
Prior art keywords
locking
inner tube
elements
outer tube
drill pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20824526.6A
Other languages
German (de)
English (en)
Inventor
Sven Beckhusen
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.)
Individual
Original Assignee
Individual
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 DE202019106925.2U external-priority patent/DE202019106925U1/de
Priority claimed from DE102019134109.4A external-priority patent/DE102019134109B4/de
Application filed by Individual filed Critical Individual
Publication of EP4073341A1 publication Critical patent/EP4073341A1/fr
Withdrawn legal-status Critical Current

Links

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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/03—Couplings; joints between drilling rod or pipe and drill motor or surface drive, e.g. between drilling rod and hammer
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • E21B17/0465—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches characterised by radially inserted locking elements

Definitions

  • the present invention relates to a device for connecting a radially extending he locking openings having drill pipe to the drill drive egg nes drilling device.
  • the invention also relates to a drilling arrangement for earth drilling, comprising a drill drive, at least one drill pipe with radially extending locking openings and a device for connecting the drill pipe to the Bohran drive.
  • the device mentioned at the beginning and the aforementioned drilling arrangement are used in the creation of boreholes in civil engineering. Such Drehbohranla conditions are used in particular in the production of cased bores.
  • the drilling tools are driven into the subsoil by means of drilling or pressure pipes. It is necessary to regularly remove the drill pipe from the borehole in order to remove the excavated material from the drilling tool and to be able to store it next to the borehole. Then the drilling tool is to be reinserted into the borehole and, according to the drilling depth already achieved, is to be extended further by means of drill pipes.
  • drill pipes During the creation of such a borehole, it is necessary several times to connect the drill drive of a drilling device to the drilling and / or pressure pipes mentioned and to release it again. It often happens here that a drill pipe is held freely suspended from the drill drive. In this state, unintentional loosening can cause serious damage to people and material.
  • Another object of the present invention is to propose a device of the type mentioned at the beginning which is as robust as possible against interference and at the same time reliably avoiding the risk of accidentally detaching the drilling or pressure pipe from the Bohran drive.
  • Another object of the present invention is to propose a corresponding drilling arrangement for earth drilling.
  • the device mentioned at the outset for connecting a drill pipe having radially extending locking openings to the Drill drive of a drilling device, comprising an inner tube designed to receive a free end of the drill pipe with its locking opening, an outer pipe which at least partially encompasses the inner pipe and is set up for connection to the drill drive, the inner pipe being set up at its end on the drill pipe connection side for reaching through and guiding locking elements radially he has extending passage recesses, the locking elements are arranged in the passage recesses so that they can slide radially, arranged on the outside of the outer tube, each having a control link for radial position adjustment of the locking elements between an open position and a locking position by rotating the inner tube relative to the outer tube forming, Füh approximately elements, and a connecting device which is set up to releasably connect the outer tube to the inner tube in a rotationally fixed manner by in each case on the inner wall surface of the outer tube and on the outer wall surface of the inner tube to at least partially encirc
  • the device according to the invention is particularly robust against soiling and / or the action of mechanical forces from the outside. Due to the purely mechanical structure, the device according to the invention does not include any sensitive components, such as electrical or hydraulic servomotors, and also no electronic assemblies. In addition, the form-fitting elements are located between the outer tube and the inner tube, so they are appropriately protected against external mechanical influences. Another advantage is that, by means of the device according to the invention, the connection of a drill pipe to the drill drive can be carried out alone and by the machine operator.
  • An expedient embodiment of the invention is characterized in that the form-fitting elements are a toothed ring pair with facing tooth profiles spaced from one another in the longitudinal axial direction and a double toothed ring with tooth profiles each facing the tooth profiles of the toothed ring pair.
  • the use of the gear rim pair and the double gear rim as form-locking elements offers the advantage that a non-rotatable connection is always established between the outer tube and the inner tube when both pressure and tensile force are applied, so that in this state there is relative rotation between the outer tube and the inner tube is excluded due to the non-rotatable coupling.
  • This also offers the advantage that the locking elements which are in a locked position always remain in their position and in this way ensure a secure coupling with the drill pipe.
  • a preferred development of the invention is characterized in that the pair of toothed rings is arranged on the outer wall surface of the inner tube and the double toothed ring is arranged on the inner wall surface of the outer tube. Due to the mutual arrangement of the ring gear pair and double ring gear on the outer wall surface of the inner tube and on the inner wall surface of the outer tube, the prerequisites for a non-rotatable coupling of the outer and inner tubes are given, provided that both are in positive engagement.
  • the double ring gear is arranged on the outer wall surface of the inner tube and the pair of ring gears is arranged on the inner wall surface of the outer tube.
  • the aforementioned embodiment with regard to the arrangement of double gear rim and gear rim pair represents a is another advantageous embodiment of the invention. It is therefore optionally possible to arrange the ring gear pair on the outer wall surface of the inner tube or on the inner wall surface of the outer tube. In this case, the double gear rim is to be arranged on the other pipe.
  • tooth flank angle of the tooth profile is less than 7 degrees.
  • the choice of the mentioned tooth flank angle of less than 7 degrees offers the advantage that there is no feed between the respective tooth profiles in the longitudinal axial direction when the torque is transmitted between the inner and outer tubes.
  • the jacket surface of the outer tube has recesses in the region of the guide elements.
  • the recesses mentioned in the outer surface of the outer tube give the guide elements the appropriate space to be able to pivot correspondingly far relative to one another when the inner tube and outer tube are rotated.
  • Another useful embodiment of the invention is characterized in that the locking elements are pretensioned by means of spring elements in such a way that they rest against the guide elements under spring pretension.
  • the locking elements are automatically moved radially outward when the free-running position is reached, so that they release the locking opening of the drill pipe and the coupling with the drill pipe is automatically released in this way.
  • this automatic release of the locking of the drill pipe only takes place when the form-fitting elements are in the free-running position, so that unintentional detachment of the drill pipe from the device according to the invention is avoided in any case.
  • each of the guide elements has a sliding surface on which the head side of the locking element is slidably guided.
  • the sliding surfaces of the guide elements with the head sides of the locking elements each form a sliding guide that is particularly robust against dirt or damage from external mechanical influences.
  • a preferred development of the invention is characterized in that the distance was between the outer wall surface of the inner tube and a central area of the Sliding surface at least substantially corresponds to the length of one of the locking elements. This ensures that in the open position the locking elements are in any case led out of the locking openings of the drill pipe to such an extent that the drill pipe is completely released from the device according to the invention.
  • the sliding surface is inclined towards the inner tube on the sides, starting from the central region.
  • the sliding surface is designed in such a way that it has the greatest possible distance from the outer tube in the aforementioned Mittenbe, while the distance between the sliding surface and the outer tube is smaller on both sides.
  • the sliding surface forms a control surface which, when the inner tube is rotated to the outer tube both clockwise and counterclockwise, always leads to a movement of the locking elements in the radial direction inward. In this way, the functionality of the locking is brought about by relative rotation of the inner and outer tubes.
  • each of the guide elements comprises lateral holding elements, between which the sliding surface is arranged.
  • the holding elements thus fulfill a double function.
  • these spacer elements form in order to arrange the sliding surface with the required distance from the outer surface of the outer tube.
  • these Ge counterpart elements for the locking elements to limit the maximum possible rotation of the outer and inner tubes relative to one another.
  • each locking element comprises at least one head part and at least one locking part.
  • the locking element is designed in two parts. With this two-part design, the individual parts can be manufactured separately. Such separate production processes increase flexibility in production, offer more options in the design and use of the locking elements, in particular it is possible to replace only those components that are subject to high mechanical stress and thus increased wear. For example, the forces acting on the locking part from the jacket of the outer tube during the locking process are the reason for a higher stress on the locking part compared to the head part and thus faster wear of the locking part.
  • the two-part construction of the locking element enables one more targeted change as well as easier installation and removal of wear parts. The replacement of the entire locking part is prevented and thus material and its costs are saved. This also leads to lower construction and operating costs.
  • Another useful embodiment of the invention is characterized in that the mutually facing sides of the head part and the locking part are designed and set up as coupling sides in such a way that the head part and the locking part can be connected to one another in a form-fitting and / or non-positive manner. In this way, the head part and the locking part can be joined together in a particularly simple manner and separated from each other again if necessary.
  • the head part and the locking part preferably each have sides which allow the two to be coupled to one another. In this way, the two can be joined together in such a way that the strength and durability of the locking element is the same as that of a locking element formed in one piece. At the same time, the connection of the head part and the locking part can be released from one another at any time in order to allow a targeted exchange of defective or worn parts and to ensure easy installation, removal and reinstallation of the head part and the locking part.
  • the coupling sides are in releasable engagement in the connected state of the head part with the locking part.
  • the releasable engagement increases on the one hand the contact area of the head and locking part, so that the form and / or force fit and thus the cohesion of the individual parts of the locking element is strengthened, on the other hand, the engagement is designed to be releasable so that the components are again non-destructive can be separated. A complete replacement that would otherwise be necessary can thus be avoided.
  • Another expedient embodiment of the invention is characterized in that at least one securing element is designed and set up for releasably locking the head part with the locking part.
  • the securing elements ensure that the head part and the locking part are locked and thus ensure that the head part and the locking part are held firmly together.
  • the safety elements are set up to prevent unintentional loosening of the connection between the head part and the locking part.
  • they can be solved again and thus ensure the flexibility of installation and removal as described above, such as changing and repairing the locking element or its components.
  • the securing element is set up in a plane perpendicular to the plane of rotation of the drill pipe.
  • the hedging element therefore forms a locking element that remains in its position when forces act in the plane of rotation.
  • the securing element Since the securing element is arranged in such a way that it does not lie in the plane of rotation, force components acting in the plane of rotation do not act on the securing element in such a way that it could become detached. In this way, reliable locking is always achieved - even under load.
  • the locking part has a higher surface hardness compared to the head part. Due to the high load caused by the sliding contact of the locking part with the jacket of the outer tube 11, a higher surface hardness compared to the head part of this component is advantageous for the resistance, longevity and reliability of the locking part.
  • the head part which is exposed to lower mechanical loads, can be made of a material of lower strength due to the two-part nature of the locking element. In this way, the manufacturing and exchange costs can be significantly reduced, since only part of the material has to be made of high surface hardness.
  • the invention further relates to a drilling arrangement for earth drilling, comprising a drill drive, at least one drill pipe with radially extending locking openings and a device for connecting the drill pipe to the drill drive.
  • FIG. 1 shows a perspective view of the device according to the invention in an unlocked state
  • FIG. 2 shows a detail view of the device shown in FIG. 1,
  • FIG. 1 shows a perspective view of the device according to the invention in the locking position when a tension is applied
  • FIG. 4 shows a detail view of the device shown in FIG. 3,
  • FIG. 5 shows a perspective view of the device according to the invention in the locking position when pressure is applied
  • FIG. 6 shows a detail view of the device shown in FIG. 5,
  • FIG. 5 A sectional view of the device shown in Figs. 5 and 6 Vorrich
  • Fig. 8 is a perspective view of the locking element according to the invention.
  • FIG. 9 is a perspective view of the locking element shown in FIG. 8 in plan view, FIG.
  • FIGS. 8 and 9 shows a sectional view of the locking element shown in FIGS. 8 and 9, and
  • FIG. 11 is a perspective view of the locking element looking towards the locking part.
  • the drilling devices mentioned at the outset are sufficiently well known from the prior art, so that a detailed representation of these is largely dispensed with in the drawing.
  • the device according to the invention shown in the drawing is used on the one hand to be connected to the drill drive of a drilling device and on the other hand to establish a connection to a drill pipe 39 - shown exclusively in FIG. 7 in the drawing.
  • Fig. 1 shows a perspective view of the device according to the invention in the entrie apply state.
  • the device according to the invention comprises an inner tube 10 which is designed and configured to receive a free end of the drill tube 39 with its locking opening 40.
  • the device according to the invention further comprises an outer tube 11 which partially or completely surrounds the inner tube 10 and is also set up for connection to the drill drive (not shown in the drawing).
  • the inner tube 10 has radially extending penetration recesses 13 at its end 12 on the drilling connection side.
  • the handle recesses 13 are designed and set up to guide locking elements 14 in a slidable manner in the radial direction 17.
  • the Verriege treatment elements 14 are arranged in the pass-through recesses 13 so that they can be moved radially. In this way, the locking elements 14 can be pushed radially inward to engage in the radially extending locking openings 40 of the respective drill pipe 39 - shown in FIG. 7 - and thus establish a rotationally fixed and at the same time loadable connection in the axial direction 15.
  • the device according to the invention further comprises guide elements 16 arranged on the outside of the outer tube 11.
  • the locking elements 14 are arranged so that they can slide radially in the handle recesses 13, i.e. can be moved in the radial direction 17.
  • the guide elements 16 each have control links 18 which are designed for the radial position adjustment of the locking elements 14 between an open position and a locking position shown in FIGS. 3, 4, 5, 6 and 7 below.
  • the control links 18 are set up in such a way that the locking elements 14 optionally move into the open or locking position by rotating the inner tube 10 relative to the outer tube 11.
  • the locking elements 14 are moved inward in the radial direction 17 by means of the control link 18, as shown in FIGS. 3 to 7.
  • the control link 18 enables a movement of the locking elements 14 in the radial direction 17 outward, as shown in FIGS. 1 and 2.
  • the view is free of a part of a Ver connecting device 19, which is completely covered in Fig. 1 by the outer tube 11 is made.
  • the connecting device 19 is preferably set up to connect the outer tube 11 to the inner tube 10 on the one hand non-rotatably and on the other hand releasably with egg nander.
  • form-locking elements 20 are provided, the aforementioned form-locking elements 20 being at least partially circumferentially arranged on the inner wall surface 21 of the outer tube 11 and on the outer wall surface 22 of the inner tube 10.
  • the inner tube 10 and the outer tube 11 are - mechanically limited only by the form fit simplantation 20 - in the axial direction 15 relative to one another is set up.
  • the respective longitudinal axial positions between the outer tube 11 and the inner tube 10 can be shifted relative to one another.
  • the outer tube 11 and the inner tube 10 can be displaced relative to one another in a longitudinal axial position.
  • the interlocking elements 20 are in the free-running position, that is, they are free of engagement with one another.
  • the form-locking elements 20 come into form-locking engagement with one another when - as shown in FIG. 4 - the inner tube 10 is displaced relative to the outer tube 11 in the pulling direction 23. This state occurs, for example, when a tensile force is exerted on the drill pipe 39 via the drill drive - not shown in the drawing. As shown in FIG. 4, the two upper form-locking elements 20 come into form-locking engagement with one another and thus form a non-rotatable connection between the inner tube 10 and the outer tube 11.
  • the two lower form-locking elements 20 interlock with form-locking engagement as soon as the inner tube 10 is relative to the outer tube 11 in FIG Printing direction 24 is shifted.
  • This state occurs, for example, when a compressive force is exerted on the drill pipe 39.
  • the form-fit elements 20 are set up as a function of the relative position of the inner tube 10 to the outer tube 11 in the axial direction 15, that is, either when the inner tube 10 is displaced relative to the outer tube 11 in the pulling direction 23 or in the Pressure direction 24 to get with each other in the form of locking engagement.
  • a rotationally fixed connection between the inner tube 10 and the outer tube 11 is brought about in each of the two longitudinal axial positions.
  • a decoupling of this non-rotatable composite between the inner tube 10 and the outer tube 11 takes place when the form-locking elements 20 are in the free-running position.
  • the form-fit elements 20 - as shown in the drawing - are preferably designed as a pair of gear rings 25 and a double gear ring 26.
  • the toothed ring pair 25 has tooth profiles 27 which are spaced apart from one another in the longitudinal axial direction and which face one another. Between these facing sprocket profiles 27 be there is the double sprocket 26 with its tooth profile 28, each of the Zahnpro files 27 of the sprocket pair 25 is assigned.
  • the ring gear profile 27 and the ring gear profile 28 are designed correspondingly with regard to their geometry in such a way that the form-locking engagement described above takes place in the middle position between the inner tube 10 and the outer tube 11.
  • the ring gear pairs 25 on the outer wall surface 22 of the inner tube 10 and the double ring gear 26 on the inner wall surface 21 of the outer tube 11 are arranged.
  • the toothed ring pair 25 forms a structural unit with the inner tube 10
  • the double toothed ring 26 forms one with the outer tube 11.
  • the double ring gear 26 is arranged on the outer wall surface 22 of the inner tube 10 and the ring gear pair 25 is arranged on the inner wall surface 21 of the outer tube 11.
  • the tooth flank angle of the tooth profile is preferably less than seven degrees. This means that the respective tooth flank angles of the ring gear profiles 27 and of the ring gear profile 28 do not exceed the aforementioned angular amount.
  • the choice of the tooth flank angle mentioned always ensures that an effective Torque from the inner tube 10 to the outer tube 11 and vice versa does not lead to any generation of thrust or tensile forces in the axial direction 15.
  • the jacket surface 29 of the outer tube 11 has recesses 30 in the area of the guide elements 16, so that the locking elements 14 dip through the outer tube 11 in the area of these recesses 30.
  • the size of the recesses 30 also determines the maximum pivot angle by which the inner tube 10 can be rotated relative to the outer tube 11 before a further relative rotation of the two tubes to each other by collision of the connecting elements 14 with the lateral surface 29 of the outer tube 11 to each of the two Pages another relative pivoting mechanically blocked.
  • the locking elements 14 are spring-pretensioned by means of spring elements 31.
  • the spring preload brought about in this way serves to press the locking elements 14 against the guide element 16 and to automatically urge them outward in the radial direction 17.
  • Each of the guide elements 16 preferably comprises a sliding surface 32.
  • the head side 33 of the locking elements 14 is guided in a sliding manner on this sliding surface 32.
  • the sliding surface 32 thus effects the movement of the locking elements 14 in the radial direction 17 as a function of its radial distance.
  • the distance 35 between the outer wall surface 22 of the inner tube 10 and a central region 34 of the sliding surface 32 is preferably selected such that it corresponds to the length of one of the locking elements 14 or essentially the length of one of the locking elements 14.
  • the distance 35 is optimally designed so that the locking elements 14 in the unlocked position - shown in FIG. 2 - are positioned just far enough outward in the radial direction 17 that they no longer protruded from the penetration recess 13 on the inside of the inner tube 10 hen.
  • the locking elements 14 are not only guided through the handle recesses 13, but also mounted in corresponding guide sleeves 36 such that they can slide.
  • the sliding surface 32 is designed to be inclined on both sides 37, starting from the central region 34, towards the inner tube 10.
  • the sliding surfaces 32 are of this type designed that they are furthest away from the inner tube 10 at a distance 35 in their central region 34 and incline towards the inner tube 10 on their two sides 37, i.e. have a smaller distance there than the radial distance 35 from the inner tube 10.
  • Each of the guide elements 16 preferably comprises lateral holding elements 38, between which the sliding surface 32 is arranged.
  • the holding elements 38 fulfill a double function, namely on the one hand they serve as a holder for the sliding surface 32 and on the other hand a counter-surface for the locking elements 14 to limit the maximum relative rotatability between the inner tube 10 and the outer tube 11.
  • Fig. 8 shows a perspective view of the locking element 14 according to the invention.
  • the locking element 14 comprises a head part 41 and a locking part 42, which is preferably cylindrical.
  • the head part 41 comprises the head side 33 of the locking element 14, so forms a head side 33 facing away from the locking part 42 and interacting with the sliding surface 32.
  • the free end of the locking part 42 has a locking head 43 which, in particular, as shown in the drawing, is conical is formed or chamfered.
  • the sides of the head part 41 and the locking part 42 facing each other - not explicitly shown in the drawing - are designed and set up as coupling sides in such a way that the head part 41 and the locking part 42 can be detachably connected to one another in a form-fitting and / or force-fitting manner.
  • a recess is provided in the side of the head part 41 facing the locking part 42, into which the side of the locking part 42 facing the head part 41 engages with a precise fit or with a slight oversize to achieve a tight fit to form a composite part.
  • the coupling sides can be released from one another again if required, that is to say they are in releasable engagement with one another.
  • the head part 41 has a bore 45 which is designed and configured to receive a securing element 44.
  • the hedging element 44 is preferably designed as a locking pin, for example in the form of a slotted hollow cylinder.
  • the diameter of the locking pin is preferably slightly larger than that of the bore 45, so that the locking pin is automatically held in the bore 45 with a tight fit, but is set up so that it can be driven out to remove the locking element 44.
  • the locking part 42 is formed tapering towards the head part 41.
  • the locking part 42 also has a transverse bore - not designated in any more detail in the drawing - which is arranged in such a way that it is aligned with the bore 45 in the connected state of the head part 41 with the locking part 42.
  • the bore 45 together with the transverse bore of the locking part 42 forms a through-receiving space for the securing element 44.
  • the securing element 44 introduced into the through-receiving space thus locks the locking part 42 with the head part 41 against unintentional loosening.
  • the transverse bore of the locking part 42 can be designed as a through recess.
  • two countersunk bores can be provided in each extension of the bore 45. For locking, one of the securing elements 44 is then inserted into each of the countersunk bores.
  • the head part 41 has recesses on each opposite end face for receiving a viewing aid 46.
  • the recesses are preferably designed as countersunk bores.
  • the visual aids 46 are used by a machine operator to easily identify the respective position of the locking element 14.
  • the visual aids 46 are more preferably designed analogously to the securing elements 44.
  • the invention also relates to a drilling arrangement - not shown in detail in the drawing - for earth boreholes, which comprises a drill drive and at least one drill pipe 39 with radially extending locking openings 40 - shown in FIG.
  • This drilling arrangement also has the above-described Vorrich device according to the invention for connecting the drill pipe 39 to the drill drive with the aforementioned features.
  • the advantages and functions of the device according to the invention for connecting the drill pipe 39 to the drill drive have already been explained in detail above and apply in the same way to the drill assembly according to the invention.

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  • 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)

Abstract

L'invention concerne un dispositif de raccordement d'une tige de forage (39), qui présente des ouvertures de verrouillage s'étendant radialement (40), au mécanisme d'entraînement de forage d'une installation de forage, comprenant : un tube intérieur (10), conçu pour recevoir une extrémité libre de la tige de forage (39) au moyen de l'ouverture de verrouillage (40) de la tige de forage ; un tube extérieur (11) qui entoure au moins partiellement le tube intérieur (10) et est conçu pour être relié au mécanisme d'entraînement de forage, le tube intérieur (10) ayant, au niveau de l'extrémité qui se raccorde à la tige de forage, des trous traversants s'étendant radialement (13) conçus pour guider et laisser passer des éléments de verrouillage (14), lesdits éléments de verrouillage (14) pouvant se déplacer de manière coulissante dans le sens radial dans les trous traversants (13) ; des éléments de guidage (16), qui sont disposés à l'extérieur sur le tube extérieur (11) et forment chacun une grille de commande (18) pour régler la position radiale des éléments de verrouillage (14) entre une position ouverte et une position de verrouillage par la rotation du tube intérieur (10) par rapport au tube extérieur (11) ; et un dispositif de raccordement (19), qui est conçu pour relier de manière amovible le tube extérieur (11) au tube intérieur (10) en vue d'une rotation conjointe au moyen d'éléments d'interverrouillage (20) qui s'étendent au moins partiellement autour de la circonférence de la face de paroi intérieure (21) du tube extérieur (11) et également de la face de paroi extérieure (22) du tube intérieur (10), et qui sont conçus pour entrer en prise de manière interverrouillée, formant ainsi les liaisons permettant une rotation conjointe, ou pour être désolidarisées en position libre, en fonction de la position axiale longitudinale entre le tube extérieur (11) et le tube intérieur (10) l'un par rapport à l'autre. L'invention concerne en outre un ensemble de forage pour trous de forage, comprenant un mécanisme d'entraînement de forage, au moins une tige de forage (39) avec des ouvertures de verrouillage s'étendant radialement, et un dispositif pour relier la tige de forage (39) au mécanisme d'entraînement de forage.
EP20824526.6A 2019-12-12 2020-12-10 Dispositif de raccordement d'une tige de forage au mécanisme d'entraînement de forage d'une installation de forage, et ensemble de forage pour trous de forage comprenant un tel dispositif Withdrawn EP4073341A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202019106925.2U DE202019106925U1 (de) 2019-12-12 2019-12-12 Vorrichtung zum Anschluss eines Bohrrohres an den Bohrantrieb eines Bohrgerätes sowie Bohranordnung für Erdbohrungen mit einer solchen Vorrichtung
DE102019134109.4A DE102019134109B4 (de) 2019-12-12 2019-12-12 Vorrichtung zum Anschluss eines Bohrrohres an den Bohrantrieb eines Bohrgerätes sowie Bohranordnung für Erdbohrungen mit einer solchen Vorrichtung
PCT/EP2020/085611 WO2021116329A1 (fr) 2019-12-12 2020-12-10 Dispositif de raccordement d'une tige de forage au mécanisme d'entraînement de forage d'une installation de forage, et ensemble de forage pour trous de forage comprenant un tel dispositif

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US11643880B2 (en) 2023-05-09
US20230008314A1 (en) 2023-01-12

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