EP0958446B1 - Procede et dispositif pour forer des sondages, notamment des sondages de recherche et d'extraction - Google Patents

Procede et dispositif pour forer des sondages, notamment des sondages de recherche et d'extraction Download PDF

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Publication number
EP0958446B1
EP0958446B1 EP97951093A EP97951093A EP0958446B1 EP 0958446 B1 EP0958446 B1 EP 0958446B1 EP 97951093 A EP97951093 A EP 97951093A EP 97951093 A EP97951093 A EP 97951093A EP 0958446 B1 EP0958446 B1 EP 0958446B1
Authority
EP
European Patent Office
Prior art keywords
drill string
drill
drill head
guide tip
head
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.)
Expired - Lifetime
Application number
EP97951093A
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German (de)
English (en)
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EP0958446A2 (fr
Inventor
Fritz Tibussek
Hermann-Josef Von Wirth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mhwirth GmbH
Original Assignee
Wirth Maschinen und Bohrgeraete Fabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP0958446A2 publication Critical patent/EP0958446A2/fr
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Publication of EP0958446B1 publication Critical patent/EP0958446B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B7/12—Underwater drilling
    • E21B7/122—Underwater drilling with submersible vertically movable guide
    • 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
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/02—Fluid rotary type drives
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/04—Electric drives
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/29—Obtaining a slurry of minerals, e.g. by using nozzles
    • 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
    • E21B7/12—Underwater drilling
    • E21B7/124—Underwater drilling with underwater tool drive prime mover, e.g. portable drilling rigs for use on underwater floors
    • 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
    • E21B7/12—Underwater drilling
    • E21B7/128—Underwater drilling from floating support with independent underwater anchored guide base
    • 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

Definitions

  • the invention relates to a method and a device for drilling wells, in particular for prospecting and prospecting drilling.
  • Digging holes are used for the purpose of investigation made from deposits and are supposed to take a sample of the material available in the deposit. In particular, digging holes are drilled if the deposit is at greater depth and / or Waters such as lakes or above the deposit Do not allow oceans to sink mines.
  • Extraction wells serve to extract the content of the deposit from soil layers.
  • Exemplary for extraction drilling be the mining of on the ocean floor stored marine sediments with diamond inclusions explained.
  • the deposits containing diamonds have become mostly in front of estuaries in the form of not too powerful, layers spread out on rocky ground.
  • the diamond-containing sediment material becomes devices used by ships on an extendable Drill string lowered to the ocean floor.
  • Such devices can have drill heads, designed for larger diameter bores are.
  • drill heads designed for larger diameter bores are.
  • the leading management team meets the underlying, mostly rocky bottom, in the they do not or only very slowly and with high wear can penetrate. The drill head can then no longer in penetrate the sediment layer.
  • a device is known from US Pat. No. 3,277,972, where the drill head penetrates a soft one Sediment layer is brought down.
  • the drill head is can be moved relative to the housing in the direction of the drill string arranged so that it can be brought down independently of the housing is once the front end of the case strikes a hard rock layer.
  • a drill pipe is known from AT-PS 379 863, which is used to guide the drill pipe in the drill pipe partially radially surrounding guide sleeve, whose Outside diameter about that of the leading drill head equivalent.
  • a two-part drill head arrangement is known from US Pat. No. 3,729,057 known along a drill string and is movable from.
  • the drill head assembly includes one Drill tip, which at one at the lower end of the drill head arranged plate is attached.
  • the latter is one Axis running transversely to the longitudinal direction of the drill string pivoted, such that the drill head relative to Drill string can be moved upwards by swiveling the plate is.
  • the device should be adaptable to the different drilling conditions and depths and require the lowest possible manufacturing effort.
  • a drill string is used its end facing the soil to be removed one in Guide tip fixed in the longitudinal direction of the drill string has, at the point where the hole is drilled should be put on.
  • the top management penetrates here regularly into the sediment layer at least by a small amount on.
  • one at its the Floor facing side having at least one cutting element Drill head running in the longitudinal direction of the drill string between an upper position in which the leading tip that projects beyond at least one cutting element, and one lower position in which the at least one cutting element itself at the same level as the end of the top located or protrudes in the direction of action, relocatable is out of it during settling of the drill string assumed upper position in its lower Position shifted.
  • the at least one cutting element of the drill head in the sediment layer leads the drill head laterally Bore approach before the guide tip is less effect laterally leading the drill head. If the drill head penetrates further into the sediment layer the at least one cutting tool is thus located on one level with the end of the leadership or even hurries ahead, so that holes except for the rock under the sediment layer after the The inventive method are possible without any problems. There the guide tip usually does not during the drilling process into the rock layer under the sediment layer must penetrate, their wear is considerable reduced.
  • the drill string turns around during the drilling process its longitudinal axis rotated and thereby both the drill head mounted non-rotatably on the drill string as well the guide tip also arranged in a rotationally fixed manner on the drill string set in rotation.
  • the "leadership" is "drilled in” into the sediment layer instead.
  • Procedure can be the force with which the face of the Drill head on the ground to be removed or the face of the hole is present, by at least one on the drill head provided buoyancy body can be adjusted.
  • the task is carried out solved a device according to claim 8, thereby is characterized in that on the soil to be removed or the end of the drill string facing the end of the bore one fixed in the longitudinal direction thereof Guide tip is provided and that the drill head in Longitudinal direction of the drill string between an upper position, in which the top management has at least one Cutting element protrudes and a lower position in the the at least one cutting element is at the same height with the end of the guide tip or this in Exceeds the effective direction of the drill head, is displaceable.
  • the guide tip primarily to prevent emigration of the drill head at the start of the drilling, against which after lowering the drill head relative to the drill string behind the one defined by the at least one cutting element Level remains and the drilling process does not go through due to overrun, it touches down on rocky ground or rocky inclusions.
  • the drill head in rotation in a known manner move one end of the drill string around its Longitudinal axis is rotatably mounted and the use of a interact with the drill string in the area of this end Power turret is provided.
  • the drill head must be in in this case be arranged in a rotationally fixed manner on the drill string (Claim 10).
  • gimbal a gimbal device
  • the drill head is preferably by means of a drive device assigned to it the drill string about a directed about its longitudinal axis Rotation offset (claim 14).
  • the drive device comprises according to claim 15 advantageously a rotary motor with a the drill string arranged device for receiving a Torque, which according to claim 16 preferably as a spline is trained, cooperates.
  • the rotary motor can be a hydraulic motor according to claim 17 his.
  • the carriers and counter-carriers preferably exist according to claim 20 in the case of driving the guide tip interlocking splines.
  • a device having the features of the claim 22 has.
  • the drivers and / or the counter-drivers configured in such a way that the management tip then only engages with the rotating drill head, if that is at least a cutting element level with the end of the guide tip located or in the direction of action of the drill head surmounted. This measure ensures that further lowering the drill head into the sediment floor not by yourself in the one of the at least a cutting tool not covered area "Core" is prevented.
  • a particularly good adaptability of the device Different sediment soils are given when on the drill head at least one float to adjust the in Direction of action of the drilling head acting drilling force is provided is.
  • the effective direction of the Drilling head acting drilling force to the present Sediment soil properties are adjusted without this a change in the force with which the top management the sediment floor is pressed. That's the way it is especially possible with particularly hard sediment soils the leader with a high force towards the ground press to achieve sufficient leadership, as it were, however, regulate the drilling force to such an extent that the engagement of the at least one cutting element on the one hand does not cause the hole to migrate out, on the other hand, optimal drilling progress is achieved.
  • the at least one buoyancy body according to claim 25 an optionally floodable or with a gas, preferably compressed air, fillable tank, so is the Drilling force can also be changed during the drilling process. This makes it possible, for example, at the beginning of the Drilling process - as long as there is a risk of "wandering out” the hole exists, e.g. with a strongly inclined seabed - choose a low drilling force, but this in favor of increasing drilling progress, once the drilling tool is in the hole itself begins to lead.
  • a gas preferably compressed air, fillable tank
  • the device according to the invention preferably takes place in connection with one end facing away from the drill head of the drilling platform, floating platform to the Drilling holes in the seabed application (Claim 26).
  • the platform in an upper, mounted on the platform Drill string part and a the drill head and the guide tip to subdivide the lower part of the drill string the upper and lower drill string parts being such Intermesh telescopically in the longitudinal direction of the drill string and are displaceable relative to each other, so that the vertical movements of the platform are balanced, without the drilling force undergoing a significant change.
  • Device according to claim 28 is a variable in length Force generator, preferably a piston / cylinder unit, provided, which is on the one hand on the lower Drill string part, on the other hand supported on the drill head and in which the length variation in the direction of the longitudinal axis of the Drill string takes place.
  • This measure allows the drill head shifted relative to the lower part of the drill string be, without this being an activation of the on the Platform located winch 16 and a load on the Ropes 16 'required.
  • the drill head 10 for example, by collapsing the bore wall "stuck" in the hole, as by appropriate Actuation of the variable length force generator Drill head relative to the guide tip, which is particular then when the hole runs through the entire sediment layer extends on the hard rock below supports, can be moved upwards.
  • the drill head 10 can also be used Collapse of the bore walls can be solved.
  • this configuration makes it possible the leading length of the leading tip to the through adapt the soil properties to given conditions.
  • At least one buoyancy body provided, the buoyancy of which can be controlled, can the force with which the top of the guide stands on the ground adapted to the prevailing conditions become.
  • the drill head is with a variable length Power generator equipped according to claim 28, so can the drilling force by the proportional weight of the lower drill string part and thus in the axial direction firmly connected components can be increased.
  • the one designated as a whole by 100 in FIGS. 1 and 2 Device includes one on a floating platform 1 arranged mast 2, which with a pulley 3 is equipped to raise or lower one or several segments 4, 4 'one designated as a whole with 5 Drill string is used.
  • drill string segments 4, 4 ' the pulley 3 are known for this purpose, in the Drawing merely implied devices, usually with “pipe erector” or “pipe handling system” be designated.
  • To take over drill string segments 4, 4 ' is the mast 2 on the platform 1 about the axis S. pivoted.
  • the initiation of the swivel movement and the fixation of the mast 2 in its upright position serves a variable length, not shown Support 2 ', for example one not in the drawing shown piston / cylinder unit can include.
  • the - as already explained at the beginning - from removable Segments 4, 4 'existing drill string 5 includes a upper drill string part 6 and a lower drill string part 7.
  • the upper drill string part 6 opens telescopically at point 8 in the lower drill string part 7 and protrudes accordingly the representation in Fig. 1 up to point 9 in this into it.
  • the upper and lower drill string parts 6, 7 are in the for inserting the upper drill string part provided length range designed such that the drill string parts 6, 7 with little friction in this length range in the longitudinal direction L of the drill string 5 relative to one another can move, twisting the two drill string parts 6, 7 against each other about the longitudinal central axis of the drill string however is not possible.
  • Drill head 10 At the lower end of the lower drill string part 7 is a Drill head 10 arranged, which with the help of a in this integrated rotary drive 11 relative to that in the embodiment rotatably mounted in the platform, the Reaction torque absorbing drill string 5 rotatable is.
  • the illustrated embodiment serves as Power source is a hydraulic motor, which is connected to a hydraulic line 12 supplied with pressurized hydraulic fluid becomes.
  • the hydraulic drive it is also possible instead of the hydraulic drive to use an electric drive and instead the hydraulic line 12 to provide an electrical line.
  • the rotationally fixed mounting of the upper drill string part 6 one in the platform 1 serves along its vertical Gimbal-type interception device divided into two levels 19 ("Gimbal"), for which the purpose of Loosening the respectively stored drill string segment 4 are separable from each other.
  • the upper drill string part 6 On the upper drill string part 6 is - if necessary - at least another (in the illustrated embodiment two) buoyancy body 70 provided to pass through the weight of the upper drill string part 6 caused Load of the interceptor 19 and one to Lifting the drill string provided lifting device 3 ' or to reduce platform 1.
  • the buoyancy can be designed so that its buoyancy volume is variable.
  • Fig. 1 In the phase shown in Fig. 1 is the drill string 5 already by screwing individual segments 4 or 4 'mounted to its full length. At the top The end of the drill string 5 is the outlet of the raised one Overburden pipe bend 17 arranged. The upper part 6 of the drill string 5 is already closed by closing the two Parts of the cardanic interception device 19 are rotationally fixed stored in its operating position on platform 1. The pipe bend 17 opens into a funnel-shaped at its end expanded inlet 20, the overburden one known device, not shown in the drawing for removing diamonds contained in the overburden supplies.
  • the device is in the state shown in FIG. 1 100 positioned so that the drill head above the site of the seabed to be removed 40 located.
  • the Winch 16 subsided, causing the lower drill string part 7 by sliding down on the protruding into it Part of the upper drill string part 6 further lowered until that lower end 21 one at the lower end of the lower drill string part 7 provided guide tip 22 on the seabed 40 rests.
  • the resulting weight of the lower drill string part 7 essentially determines the Force with which the end 21 of the guide tip 22 supports the seabed 40.
  • Runs platform 1 - for example from the ocean swell or induced the Tiedenhub - a vertical Movement through, depending on the weather, several meters can, the force with which the Guide tip is supported on the seabed 40 or in penetrates this, not affected, since the inner drill string part 6 according to the vertical movement of the platform 1 low friction in the lower drill string part 7 can move in and out.
  • the rotary drive 11 is first activated, whereby - how will be explained later - either only the drill head 10 or the drill head 10 and the guide tip 22 in offset about the longitudinal axis L of the drill string 5 becomes.
  • the between the upper shown in Fig. 1 Position and a lower position in which the end face 23 of the drill head 10 is at least at a height with the end 21 of the guide tip 22 or this towering over, is relocatable, is by further easing the ropes 16 'lowered until its end face 23 rests on the seabed 40. That - depending on the properties of the sea floor - in the upper layer more or less penetrating end 21 of the guide tip 22 prevented spiraling out at the start of the drilling process of the drill head 10 from that provided for the drilling Job.
  • Fig. 3 shows the lower drill string part 7 with this provided drill head 10 and attached guide tip 22 in an enlarged view.
  • the upper region comprises the lower drill string part in the longitudinal direction L of the drill string 5 spaced apart Roller assemblies 24, which on the in the lower Drill string part 7 protruding section 25 of the upper Drill string part 6 arranged rails 26 cooperate such that the upper and lower drill string parts 6, 7 low friction relative to each other in the direction of the longitudinal axis L of the drill string 5 are movable, a rotation of the two drill string parts 6, 7 against each other about the longitudinal axis L is however not possible.
  • an essentially cylindrical housing 28 having drill head 10 carries on its the sole End face 23 facing the bore with respect to the longitudinal axis L of the drill string 5 arranged cutting elements 29, which radially from the outer circumference of the drill body 28 extend to the outer circumference of the guide tip 22.
  • the cutting elements 29 can be cutting teeth, cutting teeth and cutting rollers or - as shown in the drawing Embodiment - only include cutting rollers 30.
  • the cutting elements 29 serve to loosen the sea floor 40 on the sole of the respective hole.
  • Rotary drive 11 comprises two hydraulic motors 11 ', which have a 6 and 7 gear arrangement still to be explained 31 the drill head 10 in relation to the drill string 5 Offset rotation directed about the longitudinal axis L.
  • the drill head 10 also has one above its Scope distributed number of acting as a buoyancy body 32 Tanks 33, which are either floodable or with the help a compressed air supply, not shown in the drawing can be filled with compressed air.
  • Tanks 33 which are either floodable or with the help a compressed air supply, not shown in the drawing can be filled with compressed air.
  • the tanks on a non-rotating housing part 64 of the drill head 10 attached because in this case the air supply via simple Pressure hoses can be made without a technical elaborate rotary seal would be required.
  • the thus possible change in buoyancy can be in the direction of action of the drilling head 10 acting drilling force, that is the force with which the cutting elements 29 and Cutting rollers 30 rest on the sole 41 of the bore, be adapted to the prevailing conditions. Since - as already explained at the beginning - the drill head 10 between the upper position shown in Fig.
  • the device comprises a piston / cylinder device 66.
  • the piston / cylinder device 66 is also on the piston side With the help of a bearing unit 67 with an upper housing part 56 connected, which in turn on a sliding sleeve 57 is attached, their design and further function are described below with reference to FIGS. 7 and 8 becomes.
  • the piston / cylinder unit 66 is also on the cylinder side With the help of a corresponding storage unit 68 on the lower one Part 7 of the drill string 5 attached.
  • the piston / cylinder unit 66 is dimensioned such that the piston is complete retracted into the cylinder when the Drill head 10 in the upper position shown in FIG. 6 located.
  • the piston / cylinder unit 66 has two at the top and pressure connections provided at the lower end of the cylinder 66 ', 66' 'on. Will the one shown in the drawing above Pressure connection 66 '' with hydraulic fluid under pressure applied, the drill head 10 is relative to the lower part 7 of the drill string 5 and thus also to Guide tip 22 moved down by subsequent Pressurizing the pressure connection 66 'becomes the drill head 10 accordingly relative to the guide tip 22 upwards relocated.
  • the drilling force with which the drill head 10 in its direction of action bears against the bottom of the bore 41 increase, usually the drill string 5 - in particular if in two parts as in the present embodiment is designed telescopically interlocking - not suitable for absorbing shear forces.
  • the piston / cylinder unit 66 is therefore regularly used if the drill head 10 with its lateral surfaces - for example by collapsing the bore walls - is jammed in the hole. Will in such Case of connection 66 'of the piston / cylinder unit 66 with pressurized medium, the drill head 10 from its current position relative to the top management 22 shifted upwards.
  • the guide tip 22 comprises an open top tubular guide sleeve 34 which from below on the lower end of the lower drill string part 7 is pushed on and on this by means of two in the longitudinal direction L of the drill string 5 spaced radial bearing units 35 is rotatably supported about the lower drill string part 7.
  • the axial mounting of the guide tip 22 in the direction of Longitudinal axis L serves in the lower drill string part incorporated all-round groove 36 into which a radially projecting, two-part bearing ring is used on the projecting area with the help of the guide sleeve a shoulder 38 provided in this in the direction of Supported bore sole 41 seen.
  • the guide sleeve 34 comprises on its outer circumference provided driver 50, which in the illustrated embodiment than extending over the entire length of the guide sleeve 34 extending longitudinal toothing formed are. There is an engagement with the driver 50 Counter driver 51, which in turn is fixed with a inner housing wall 52 of the drill head 10 is connected.
  • the driver 50 and the counter driver 51 always - that means regardless of whether the drill head 10 in its upper, shown in Fig. 3 or in its lower position shown in Fig. 4 - engaged.
  • Driver 50 and counter driver 51 it can be advantageous to have an intervention from Driver 50 and counter driver 51 only for positions of Provide drill head 10 near its lower position.
  • a gear 55 is provided in each case.
  • the drive motor 11 ' is non-rotatably flanged to the upper housing part 56.
  • the housing part 56 is in turn with a sliding sleeve 57 connected in the direction of Longitudinal axis L can be moved, but with the help of a carrier bar 58, with which it is engaged, non-rotatably at one the lower end of the lower drill string part 7 forming tube 59 stored.
  • the gear 55 is in engagement with one Drive gear 60, which with the help of an assembly of the drive gear 60 can be divided perpendicular to the longitudinal axis L, having two thrust bearings 61 and a radial bearing 62 Bearing arrangement 63 opposite the housing part 56 or the sliding sleeve 57 is rotatably mounted.
  • the drive gear 60 At its the End face facing bore sole 41 is the drive gear 60 rotatably connected to a cover 64, which with the aid of two sealing arrangements 65 the drive gear 60 and the bearing arrangement 63 against the environment seals off.
  • cover 64 With the end face facing the bore sole 41 cover 64 is housing wall 52 of drill head 10 non-rotatably connected so that the rotary motor 11 ' generated torque transferred to the drill head 10 and this is rotated relative to the drill string 5 becomes.
  • the drive of the guide tip 22 takes place via the Driver / counter-driver arrangement already described above 50, 51.

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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 (30)

  1. Procédé pour le creusement de trous de forage, en particulier de sondages de recherche et de forages d'extraction,
    avec lequel un train de tiges (5), qui comprend sur son extrémité tournée vers le sol à déblayer une pointe de guidage (22) fixée dans le sens longitudinal du train de tiges et une tête de forage (10) avec au moins un élément de coupe (29), moyennant quoi la tête de forage (10) peut être déplacée dans le sens longitudinal du train de tiges (5) entre une position supérieure, dans laquelle la pointe de guidage (22) dépasse du au moins un élément de coupe (29), et une position inférieure, dans laquelle l'au moins un élément de coupe (29) se trouve à la même hauteur que l'extrémité (21) de la pointe de guidage (22) ou dépasse de celle-ci dans le sens actif, est déplacée avec la tête de forage (10) se trouvant dans la position supérieure en direction du forage à effectuer jusqu'à ce que la pointe de guidage (22) fixe l'extrémité du train de tiges par l'action conjuguée avec le sol et ensuite la tête de forage (10) est déplacée dans sa position inférieure pour générer le forage.
  2. Procédé selon la revendication 1, caractérisé en ce que le train de tiges (5) est mis en rotation autour de son axe longitudinal et la tête de forage (10) et la pointe de guidage (22) sont logées sur le train de tiges de façon fixe en rotation.
  3. Procédé selon la revendication 1, caractérisé en ce que le train de tiges (5) est entraíné et la tête de forage (10) est logée sur le train de tiges (5) de façon fixe en rotation, mais la pointe de guidage (22) est logée sur le train de tiges (5) de façon à pouvoir tourner autour de l'axe longitudinal du train de tiges.
  4. Procédé selon la revendication 1, caractérisé en ce que le train de tiges (5) est logé de façon fixe en rotation et la tête de forage (10) est mise en rotation par rapport à l'axe longitudinal (L) du train de tiges (5).
  5. Procédé selon la revendication 4, caractérisé en ce que la pointe de guidage (22) est logée de façon à pouvoir tourner autour de l'axe longitudinal (L) du train de tiges (5) et est mise en rotation conjointement avec la tête de forage (10).
  6. Procédé selon la revendication 4, caractérisé en ce que la pointe de guidage (22) est logée de façon à pouvoir tourner autour de l'axe longitudinal (L) du train de tiges (5) et est entraínée par la tête de forage (10), lorsque celle-ci sort de sa position supérieure et occupe une position dans laquelle l'au moins un élément de coupe (29) a atteint au moins approximativement la hauteur de l'extrémité (21) de la pointe de guidage (22).
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la force, avec laquelle le côté avant de la tête de forage (10) s'appuie sur le sol à déblayer, est réglée par au moins un corps de poussée verticale (32) prévu sur la tête de forage (10).
  8. Dispositif pour le creusement de trous de forage, en particulier de sondages de recherche et de forages d'extraction
    avec un train de tiges (5),
    avec un dispositif logeant une extrémité du train de tiges (5),
    avec une tête de forage (10) disposée sur l'autre extrémité du train de tiges (5), sur laquelle il est prévu au moins un élément de coupe (29) dans le sens actif de l'outil de forage
    caractérisé en ce qu'une pointe de guidage (22) fixée dans le sens longitudinal du train de tiges est prévue sur l'extrémité, tournée vers le sol (40) à déblayer, du train de tiges (5) et
    en ce que la tête de forage (10) peut être déplacée dans le sens longitudinal du train de tiges (5) entre une position supérieure, dans laquelle la pointe de guidage (22) dépasse du au moins un élément de coupe (29) et une position inférieure, dans laquelle l'au moins un élément de coupe (29) se trouve à la même hauteur que l'extrémité (21) de la pointe de guidage (22) ou dépasse de celle-ci dans le sens actif.
  9. Dispositif selon la revendication 8, caractérisé en ce qu'une extrémité du train de tiges est logée de façon à pouvoir tourner autour de l'axe longitudinal du train de tiges et le système comprend un dispositif pour l'entraínement du train de tiges dans un mouvement de rotation autour de son axe longitudinal (bouton tournant de force).
  10. Dispositif selon la revendication 9, caractérisé en ce que la tête de forage est disposée de façon fixe en rotation sur le train de tiges.
  11. Dispositif selon la revendication 10, caractérisé en ce que la pointe de guidage est logée sur le train de tiges de façon à pouvoir pivoter autour de l'axe longitudinal de celui-ci.
  12. Dispositif selon la revendication 8, caractérisé en ce qu'une extrémité du train de tiges (5) est logée de façon fixe en rotation sur le système.
  13. Dispositif selon la revendication 12, caractérisé en ce qu'un dispositif d'interception à cardan (19) ("Gimbal") sert au logement.
  14. Dispositif selon la revendication 13, caractérisé en ce qu'à la tête de forage (10) est attribué un système d'entraínement (11), au moyen duquel la tête de forage (10) peut être mise par rapport au train, de tiges (5) dans une rotation dirigée autour de son axe longitudinal (L).
  15. Dispositif selon la revendication 14, caractérisé en ce que le système d'entraínement (11) comprend un moteur de rotation (11') disposé sur la tête de forage (10), qui agit conjointement avec un système disposé sur le train de tiges (5) pour la réception d'un couple.
  16. Dispositif selon la revendication 15, caractérisé en ce que le système pour la réception du couple est une denture longitudinale prévue sur le train de tiges (baguette d'entraíneur 58), denture sur laquelle s'appuie le moteur de rotation pour la réception du couple d'entraínement.
  17. Dispositif selon la revendication 15 ou 16, caractérisé en ce que le moteur de rotation est un moteur hydraulique.
  18. Dispositif selon la revendication 15 ou 16, caractérisé en ce que le moteur de rotation est un moteur électrique.
  19. Dispositif selon l'une quelconque des revendications 12 à 18, caractérisé en ce que la pointe de guidage (22) est logée sur le train de tiges (5) de façon à pouvoir tourner autour de l'axe longitudinal (L) de celui-ci et comprend des entraíneurs (50), qui peuvent être mis en prise avec des contre-entraíneurs (51) prévus sur la tête de forage (10).
  20. Dispositif selon la revendication 19, caractérisé en ce que les entraíneurs (50) et contre-entraíneurs (51) se composent de dentures longitudinales qui s'emboítent les unes dans les autres dans le cas de l'entraínement de la pointe de guidage (22).
  21. Dispositif selon la revendication 19 ou 20, caractérisé en ce que les entraíneurs (50) et contre-entraíneurs (51) se trouvent en prise indépendamment de la position de la tête de forage (10), par rapport au sens longitudinal (L) du train de tiges (5).
  22. Dispositif selon la revendication 19 ou 20, caractérisé en ce que les entraíneurs (50) et/ou contre-entraíneurs (51) sont conçus de telle sorte qu'ils se trouvent en prise lorsque la tête de forage (10) occupe une position, dans laquelle l'au moins un élément de coupe (29) se trouve avant la hauteur de l'extrémité (21) de la pointe de guidage (22), ou une position dans laquelle l'au moins un élément de coupe (29) dépasse de l'extrémité (21) de la pointe de guidage (22), et qu'ils ne se trouvent pas en prise lorsque la tête de forage (10) se trouve dans sa position supérieure.
  23. Dispositif selon les revendications 20 et 22, caractérisé en ce que la denture longitudinale prévue sur la pointe de guidage (22) est prévue seulement dans la zone inférieure de la pointe de guidage et la contre-denture seulement dans la zone supérieure de la tête de forage, de telle sorte que, lors du déplacement de la tête de forage le long du train de tiges en direction de la pointe de guidage, l'extrémité supérieure de la denture est en prise avec l'extrémité inférieure de la contre-denture lorsque l'au moins un élément de couple atteint pratiquement la hauteur de l'extrémité de la pointe de guidage.
  24. Dispositif selon l'une quelconque des revendications 8 à 23, caractérisé en ce qu'il est prévu sur la tête de forage (10) au moins un corps de poussée verticale (32) pour le réglage de la force de forage agissant dans le sens actif de la tête de forage (10).
  25. Dispositif selon la revendication 24, caractérisé en ce que l'au moins un corps de poussée verticale (32) comprend un réservoir (33) pouvant au choix être inondé ou rempli avec un gaz, de préférence de l'air comprimé.
  26. Dispositif selon l'une quelconque des revendications 8 à 25, caractérisé en ce que le système recevant une extrémité du train de tiges est prévu sur une plate-forme (1) flottante.
  27. Dispositif selon la revendication 26, caractérisé en ce que le train de tiges (5) comprend une partie de train de tiges supérieure et logée sur le système logeant le train de tiges et une partie de train de tiges (6, 7) inférieure logeant la tête de forage et la pointe de guidage, les parties du train de tiges supérieure (6) et inférieure (7) s'emboítant de façon télescopique et pouvant se déplacer l'une par rapport à l'autre dans le sens longitudinal du train de tiges (5) de telle sorte que les mouvements verticaux de la plate-forme (1) provoqués par exemple par la houle de la mer sont compensés sans que la force de forage subisse une variation importante.
  28. Dispositif selon l'une quelconque des revendications 8 à 27, caractérisé en ce qu'il,est prévu un générateur de force variable en longueur (unité piston/cylindre 66), qui est logé d'une part sur la partie inférieure du train de tiges (7) et d'autre part sur la tête de forage (10) et avec lequel la variation en longueur s'effectue dans le sens de l'axe longitudinal (L).
  29. Dispositif selon l'une quelconque des revendications 8 à 28, caractérisé en ce qu'il est prévu sur le train de tiges (5) au moins un corps de poussée verticale (70), au moyen duquel on peut réduire la force de pesanteur s'appliquant sur le système recevant une extrémité du train de tiges.
  30. Dispositif selon l'une quelconque des revendications 27 à 29, caractérisé en ce qu'au moins un corps de poussée verticale (69) est prévu sur la partie inférieure du train de tiges (7).
EP97951093A 1997-01-28 1997-11-25 Procede et dispositif pour forer des sondages, notamment des sondages de recherche et d'extraction Expired - Lifetime EP0958446B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19702983 1997-01-28
DE19702983A DE19702983C1 (de) 1997-01-28 1997-01-28 Verfahren und Vorrichtung zum Niederbringen von Bohrlöchern, insbesondere für Schürf- und Gewinnungsbohrungen
PCT/DE1997/002754 WO1998032951A2 (fr) 1997-01-28 1997-11-25 Procede et dispositif pour forer des sondages, notamment des sondages de recherche et d'extraction

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EP0958446A2 EP0958446A2 (fr) 1999-11-24
EP0958446B1 true EP0958446B1 (fr) 2003-04-16

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EP (1) EP0958446B1 (fr)
JP (1) JP3302700B2 (fr)
KR (1) KR100325792B1 (fr)
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DE (2) DE19702983C1 (fr)
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NL1035635C2 (nl) * 2008-06-26 2009-12-29 Conrad Trading B V Inrichting voor het roterend boren van een buis in een onder water gelegen bodem.
CN101906536B (zh) * 2010-08-03 2012-01-04 江西稀有金属钨业控股集团有限公司 具有副巷道的原地浸取引流收液工艺
DE102011103636B4 (de) * 2011-06-08 2018-09-13 Iml Instrumenta Mechanik Labor Gmbh Bohrmessgerät und Nadel-Wechselkartusche
EP2562348B1 (fr) * 2011-08-23 2017-10-04 BAUER Maschinen GmbH Agencement de forage sous-marin et procédé d'exécution d'un forage
JP6161075B2 (ja) 2011-12-23 2017-07-12 ノーチラス・ミネラルズ・パシフイツク・プロプライエタリー・リミテツド 海底採掘のための連結解除可能な方法及び連結解除可能なシステム
KR101977948B1 (ko) * 2012-11-27 2019-05-13 대우조선해양 주식회사 공기 부양식 양광 시스템 및 방법
JP6168820B2 (ja) * 2013-04-01 2017-07-26 寄神建設株式会社 メタンハイドレート採取装置
NL2012723B1 (en) * 2014-04-30 2016-07-18 Fugro Eng B V Offshore drilling installation and method for offshore drilling.
JP6547196B2 (ja) * 2017-08-25 2019-07-24 エポコラム機工株式会社 掘削刃体
KR101876563B1 (ko) * 2018-01-24 2018-07-10 한국해양개발(주) Gis를 기반으로 하는 해양정보 시스템
CN110284837B (zh) * 2019-07-19 2023-12-22 广州海洋地质调查局 一种配备变径岩芯取样钻杆动力头的深海钻机
CN115263195B (zh) * 2022-09-28 2022-12-20 陕西晖煌建筑劳务有限公司 一种桥梁桩基钻孔装置

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Publication number Publication date
US6484820B1 (en) 2002-11-26
ZA98657B (en) 1998-08-05
DE59709874D1 (de) 2003-05-22
KR20000070517A (ko) 2000-11-25
DE19702983C1 (de) 1998-06-04
HK1021011A1 (en) 2000-05-26
JP3302700B2 (ja) 2002-07-15
WO1998032951A2 (fr) 1998-07-30
EP0958446A2 (fr) 1999-11-24
AU5476898A (en) 1998-08-18
WO1998032951A3 (fr) 1998-10-01
JP2000511250A (ja) 2000-08-29
KR100325792B1 (ko) 2002-02-25
AU716089B2 (en) 2000-02-17

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