EP3650630B1 - Section de train de tiges destinée au forage dans la terre, dispositif de forage dans la terre et utilisation d'une section de train de tiges - Google Patents

Section de train de tiges destinée au forage dans la terre, dispositif de forage dans la terre et utilisation d'une section de train de tiges Download PDF

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Publication number
EP3650630B1
EP3650630B1 EP19207138.9A EP19207138A EP3650630B1 EP 3650630 B1 EP3650630 B1 EP 3650630B1 EP 19207138 A EP19207138 A EP 19207138A EP 3650630 B1 EP3650630 B1 EP 3650630B1
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EP
European Patent Office
Prior art keywords
drill string
string section
markings
marking
section
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
EP19207138.9A
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German (de)
English (en)
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EP3650630C0 (fr
EP3650630A1 (fr
Inventor
Wolfgang Schmidt
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
Original Assignee
Tracto Technik GmbH and Co KG
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Publication date
Application filed by Tracto Technik GmbH and Co KG filed Critical Tracto Technik GmbH and Co KG
Publication of EP3650630A1 publication Critical patent/EP3650630A1/fr
Application granted granted Critical
Publication of EP3650630C0 publication Critical patent/EP3650630C0/fr
Publication of EP3650630B1 publication Critical patent/EP3650630B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B12/00—Accessories for drilling tools
    • E21B12/02—Wear indicators
    • 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
    • E21B1/00—Percussion 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/006—Accessories for drilling pipes, e.g. cleaners
    • 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
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • 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
    • E21B47/00—Survey of boreholes or wells

Definitions

  • the invention relates to a drill string section for drilling in the ground and an earth drilling device.
  • WO 98/58153 A1 discloses a percussion hammer with a sleeve-shaped drive subunit screwed to a housing, in which two annular grooves of different depths are made to detect abrasion.
  • the invention is based on the object of being able to easily detect wear, particularly in the form of abrasion, on a drill string section.
  • the core idea of the invention is to provide a marking on the outside of a section of a drill string that is used to drill a hole in the ground, the change of which enables conclusions to be drawn about abrasion during use.
  • abrasion is not limited to a single application, but if a drill string section is used several times, the change in the marking can provide an indication of the abrasion during the entire use.
  • a marking is used that enables observation with the naked eye and/or a change in the marking with the naked eye.
  • the invention provides a drill string section of a drill string for drilling in the ground.
  • At least one marking is arranged on the outside of the drill string section, by means of which abrasion on the outside of the drill string section can be detected.
  • a simple design of a drill string section is thereby made possible, whereby a change in the marking allows conclusions to be drawn about the abrasion and can be designed in such a way that a change is recognized, from which, for example, the risk of the drill string section breaking could occur. If such a change is detected, the drill string section can be renewed in order to avoid a breakage of the drill string section and thus possibly a loss of part of the drill string.
  • the marking can be designed in such a way that the change can be clearly seen with the naked eye, in particular because the marking disappears or becomes less and less visible.
  • drill string includes any means that can be inserted into the ground in order to drill a hole into the ground.
  • the drill string may include a rod, a chain and/or a rope.
  • linkage does not exclusively include rigid linkages with individual rod sections that are directly or indirectly connected to one another, but in particular all power transmission elements that can be used in an earth drilling device.
  • the drill string comprises at one end, in particular at the front, a drill head and an optionally present drill head tip or an area adjacent to the drill head, which in particular can have the same orientation as the drill head.
  • a front section of a drill string is designed as a drill head or drilling tool. In particular, this can be the case Drill string section around the housing of a ram drilling device or earth rocket.
  • drill string section therefore includes any section of the drill string, with a front section of the drill string, in particular the drill head or a drill string section adjacent to the drill head, being preferred.
  • a drill string section can also be a pipe section.
  • soil in the sense of the present description includes in particular any type of existing or to be created, preferably at least partially horizontal, channels or bores in a body, in particular earth canals including earth bores, rock bores or earth lines as well as underground or above-ground pipelines and water channels can be created or pulled in by using an appropriate earth drilling device.
  • An “earth drilling device” is understood in particular to mean any device which moves a drill string with rod sections in an existing or to-be-created channel in the ground in order to create or expand a bore, in particular a horizontal bore (HD), or to insert pipes or other long bodies into it to draw in soil.
  • the earth drilling device can in particular be an HD device.
  • An earth drilling device can therefore be a device driving a drill string, which works to displace soil and introduces the drill string into the ground in a rotational and/or translational manner in the longitudinal axial direction of the drill string. A hole can be drilled into the ground by applying tension or pressure to the drill string.
  • HD horizontal drilling
  • vertical drilling in the sense of the present description includes in particular an at least partially horizontally arranged bore or channel or pipeline.
  • outside as used in the description includes an outer area of the drill string section that can come into contact with the ground.
  • the outside thus includes an exposed area of the drill string section, which usually comes into contact with the ground when used properly and may be subject to abrasion.
  • the outside can form a partial section of a cross section of the drill string section, which can in particular be designed in an otherwise usual manner and on which at least one marking is arranged or formed.
  • the outside can be an outer surface of the drill string section in an otherwise usual manner.
  • the term "marker” as used in the description includes a structural configuration that is arranged on the outside of the drill string section.
  • the marking can be attached to the outside and/or incorporated into the outside.
  • the marking can be a change in the surface of the outside of the drill string section, which is in particular not detachably incorporated and/or applied to the surface of the outside. If one speaks of inserting or applying the marking on the outside of the drill string section, this is understood in particular to mean that the outside of the drill string section itself can be changed or modified in order to create the marking.
  • the marking is preferably formed by changing the surface of the outside of the drill string section compared to the unchanged surface of the outside on the drill string section. During proper use, abrasion on the outside of the drill string section in the area of the marking can cause the marking to change, in particular to be reduced, and can thereby provide information about the abrasion or wear.
  • the marking is a recess made in the outside of the drill string section, which can be formed, for example, by milling, turning or in some other way, in particular mechanically.
  • a marking in the sense of the description is therefore a depression arranged on the outside of the drill string section, which preferably has an extension in the circumferential direction of the drill string section at least in sections.
  • the depression can in particular be designed in a line shape along at least part of the circumference of the drill string section.
  • the depression can be designed as a notch.
  • the depression can be formed at least in sections along its extension symmetrically to its base, i.e. the lowest point relative to the outside of the drill string section. An asymmetry with respect to the bottom of the depression is possible at least in sections.
  • the bottom of the depression can be designed with a radius to avoid notch effects.
  • a tapered base of the depression which can also exist in sections, is not excluded.
  • the marking is designed at least in sections along the cross section - the smallest dimension of the "depth", i.e. the bottom of the depression, can correspond to a minimum diameter of a worn drill string section. If abrasion occurs down to the bottom of such a deep recess, i.e. the marking is almost no longer visible, then the minimum diameter of a worn drill string section has been reached. Until the minimum diameter is reached, which is recognized by the fact that the marking at least partially disappears but is still present, the risk of the corresponding drill string section breaking can be almost eliminated. If the minimum diameter is reached and the marking is therefore almost impossible to recognize, the drill string section can be renewed in order to avoid a breakage of the drill string section and thus possibly the (partial) loss of the drill string.
  • a marking designed as a recess on the outside of the drill string section to be viewed provides the advantage that a marking is present precisely in the material whose abrasion and the associated wear and tear are to be examined.
  • the inventors have recognized that although a marking designed as a recess can cause a "weakening" of the material of the drill string section, the supposed weakening provides a decisive advantage, which can be used in particular to focus on the minimum diameter of the drill string section, which has not yet been reached. as long as the marking can be seen.
  • Markings in particular depressions, can be assigned to different degrees of abrasion or wear. For example, depressions of different depths can indicate that a certain amount of abrasion has already occurred on the drill string section, but - where at least a marking of greater depth can still be recognized - the abrasion is still in the non-critical range.
  • a marking designed as a recess can have a depth that can depend on the material of the outside or the coating or coating of the outside of the drill string section.
  • a marking designed as a recess usually has a depth that is less than 5mm, preferably less than 4mm, further preferably less than 3mm, particularly preferably less than 2mm, particularly preferably less than 1mm, very particularly preferably less than 0 .8mm and particularly preferably less than 0.5mm.
  • Markings designed as depressions can have a depth that can be essentially around 0.5mm, essentially around 0.3mm and essentially around 0.15mm.
  • the naming of a numerical value includes not only the actual numerical value, but also - in order to take into account manufacturing tolerances in particular - a range around the specific numerical value, which is +/- 15%, preferably +/- 10%, of the specified numerical value can.
  • the marking extends completely around the circumference of the drill string section.
  • the marking can be designed to be closed around the circumference of the drill string section. In this way, it can be achieved that abrasion detection is possible, in particular with a marking designed evenly around the circumference of the drill string section, in which the entire circumference of the drill string section can be detected. In particular, if there is an uneven load on the drill string section, which leads to non-uniform, different abrasion along the circumference of the drill string section, the abrasion can still be detected by looking at the entire circumference.
  • a marking formed along the entire circumference of the drill string section can in particular be arranged in a closed circle around the longitudinal axis of the drill string section.
  • the circular shape can in particular essentially have an angle of 90° to the longitudinal axis of the drill string section. Deviations of 90° are possible. Shapes other than a circular shape can also result, for example an elliptical shape.
  • a marking is also possible for a marking to be formed only in sections along the entire circumference of the drill string section and for there to be no marking between the sections. This allows any supposed weakening to be further reduced.
  • the marking can be designed spirally in the circumferential direction of the drill string section. This makes it possible to form a marking that is easy to produce and easy to recognize.
  • the depth of the circumferentially spiral marking can, for example, change over its course.
  • a spirally circumferential marking in the direction of the longitudinal axis of the drill string section can be designed to increase in size in an area, in particular continuously (for example from 0mm to 0.5mm depth), in order to recognize different degrees of wear.
  • the depth of the circumferentially spiral marking can decrease (again) to, for example, 0 mm in the direction of the longitudinal axis of the drill string section.
  • a circumferentially spiral-shaped marking can therefore be provided, which initially increases in depth in the direction of the longitudinal axis of the drill string section and then decreases again in the direction of the longitudinal axis.
  • Different start and end values of the circumferential spiral marking are possible.
  • a symmetrical arrangement of the circumferentially spiral marking with regard to its depth can offer the advantage that a control function with regard to uniform abrasion is possible.
  • Different degrees of abrasion can be determined using a marking that changes along its extent.
  • identically designed markings are possible on the drill string section in order to provide a control function.
  • the identically designed markings can be present at different angular positions with respect to the longitudinal axis of the drill string section.
  • the identically designed markings can also alternatively or additionally be spaced apart from one another with regard to their position in the direction of the longitudinal axis.
  • identically designed or differently designed markings can be arranged at a distance from one another on several sections of the drill string section. This can offer manufacturing advantages by eliminating the need for a circumferentially spiral marking. However, it can also be provided that both a circumferentially spiral-shaped marking and several identically designed or differently designed markings can be provided next to one another on the drill string section, spaced apart from one another. The spacing of the plurality of identically designed or differently designed markings can be in particular in the direction of the longitudinal axis of the drill string section.
  • Variations of differently designed markings and identically designed markings are possible, so that differently designed markings and identically designed markings alternate, whereby several identically or differently designed markings can be present next to one another and can be adjacent to a number of identically or differently designed markings.
  • a substantially symmetrical arrangement of markings offers the advantage that changes to the markings can be more easily recognized.
  • arranging markings next to each other can offer the advantage that only one point on the drill string section has to be considered.
  • the extent of several markings - whether designed in the same way or designed differently - can be different or the same for the markings along the circumferential direction of the drill string section.
  • markings of the same depth can have a different extent in the circumferential direction.
  • differently designed markings different depths have essentially the same extent in the circumferential direction.
  • the marking or markings can be rounded in the longitudinal extent radially to the longitudinal axis of the drill string section. This shape allows notch effects to be avoided or at least reduced.
  • the invention also provides an earth drilling device with a drill string as described in particular above.
  • the earth drilling device further has a drive which is designed to introduce a drill string having the drill string section into the ground.
  • a use of a drill string section for drilling in the ground is also described, using a marking on the outside of the drill string section by means of which abrasion can be detected.
  • the drill string section is a housing of a ram drilling device for drilling in the ground, a percussion piston for reciprocating movement being arranged in the housing.
  • Drilling sections in particular which are designed as a housing of a ram drilling device, can be exposed to increased wear, in particular due to the action of the percussion piston on the housing, so that for this type of drill string sections, a particularly simple and easy-to-use detection of wear by means of the on the Housing of the ram drilling device present abrasion is possible.
  • ram drilling device or "earth rocket”, which is essentially used synonymously with “ram drilling device”, includes in the sense of the description a self-propelled impact device which works to displace soil and can impact a line or a pipe into the ground.
  • ram drilling device includes both earth displacement devices in which the drill head tip is firmly connected to the housing and ram drilling devices with a drill head tip mounted axially and displaceably independently of the housing.
  • the drill head tip can in particular be a chisel.
  • a ram drilling rig can be both a one-stroke rig and a two-stroke rig. In a two-stroke device, the percussion piston hits first the tip of the drill head, which runs ahead in the first cycle.
  • the housing is acted upon by the percussion piston in the second cycle. Peak resistance and skin friction are separated in a two-stroke device and alternately overcome more easily. With a two-stroke device, there is better energy conversion, which in particular facilitates the destruction of obstacles as a result of the concentration of the impact impulse on the drill head tip. As a result of the soil displacement corresponding to the stroke of the drill head, the housing remains in a stationary position and thus ensures relatively good running stability.
  • more than one marking can be arranged on the drill string section.
  • the markings can be in different designs in order to be able to recognize a degree of abrasion by means of a marking.
  • the markings can differ in particular in their type, position, dimension and/or orientation with which they are arranged on the outside of the drill string section.
  • the marking can have different depths.
  • depth includes the extent of the depression in a direction radial to the longitudinal direction of the drill string section.
  • the degree of wear on the drill string section can be determined without the need for more expensive measuring instruments. This not only makes it possible to decide whether the drill string section is approaching a possible service life, but also what degree of abrasion or wear there is, whereby not only the end of life, but also degrees in between can be recognized.
  • the markings can have different widths, in that the markings are present, for example, as V-shaped depressions or as rounded depressions with different slopes of the sides - in order to form the different widths - on the outside of the drill string section.
  • the width of the markings also decreases due to increasing wear due to the continuous use of the drill string section.
  • a preferred embodiment has markings of different depths and/or widths, whereby the width and/or depth can be selected so that the different Markings can indicate a different degree of wear on the drill string section, regardless of which marking is still recognizable - or no longer recognizable.
  • a preferred arrangement of these, in particular uniform, graded markings can be carried out as follows: The markings on the drill string section are arranged transversely, in particular orthogonally, to the direction of the longitudinal axis of the drill string section, preferably in mirror image with respect to an axis transverse to the longitudinal direction of the drill string section. You can start with the marking or markings with the greatest depth, which can be, for example, 0.5mm. Towards or away from the drill head, starting from the marking or markings with the greatest depth, further markings, for example with a depth of 0.3mm and 0.15mm, can follow, especially in mirror image.
  • Fig. 1 shows a drill string section 1 designed as a ram drilling device, with a housing 2, within which a (not visible) percussion piston is arranged.
  • the percussion piston is supplied with compressed air via a compressed air hose 4 in order to be able to carry out reciprocating movements within the housing 2.
  • the percussion piston can be reversed so that it either hits the front area of the ram drilling device in order to drive the ram drilling device with the drill head 3 first through the soil, or so that it hits the rear area of the ram drilling device in order to drive it backwards.
  • the drill string section 1 has markings 5, 6, 7 arranged on the housing 2 of the ram drilling device.
  • the markings 5, 6 and 7 make it possible to recognize different degrees of abrasion on the housing 2.
  • the abrasion that occurs on the housing 2 and increases over time is caused by the resistance of the soil as the drilling progresses.
  • Fig. 2 shows the section Y in a greatly enlarged format Fig. 1 .
  • Three depressions 7 designed as grooves are screwed in, each in the direction of the drill head 3 and in the direction of the end 9 of the drill string section 1.
  • These outer recesses 7 have a screw-in depth of 0.15 mm.
  • the material on the outside of the housing 2 is removed by abrasion to such an extent that the depressions 7 are initially barely or no longer visible. This indicates the start of wear on the drill string section 1 or the housing 2 and enables an initial estimate of when the housing 2 will be so worn that it needs to be replaced.
  • Three depressions 6 are arranged further apart from the drill head 3 and from the end 9 of the ram drilling device than the three depressions 7 already described. These three depressions 6 were screwed in with a depth of 0.3 mm. After an advanced period of use and thus advanced wear on the housing 2 of the ram drilling device, the material removal on the housing 2 has progressed to such an extent that the three recesses 6 are hardly or no longer visible. This already means heavy wear on the housing 2, but continued use of the drill string section 1 designed as a ram drilling device is still possible. However, it can be assumed that the housing 2 will have to be replaced within a short period of time. The necessary preparations can now be made. Three more depressions 5 are arranged in the middle between the depressions 6, 7 already described above.
  • Fig. 3 shows an example of another possible embodiment of the markings 5, 6, 7 for detecting the wear of a housing 2.
  • this embodiment instead of circumferential depressions 5, 6, 7, depressions 10, 11, 12, which only extend over a portion of the circumference, are milled into the housing 2 with different depths.
  • Fig. 4 shows a greatly enlarged view of section Z Fig. 3 .
  • the depressions 10 fulfill the task of the three depressions 7 Fig. 1 .
  • the depressions 11 are analogous to the three depressions 6 Fig. 1 and the depression 12 shows how the three depressions 5 look Fig. 1 , the need for the housing 2 to be replaced.
  • the depressions 10, 11, 12 are also provided with radii 8 to avoid notch effects.

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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)
  • Geophysics (AREA)
  • Earth Drilling (AREA)

Claims (11)

  1. Section de train de tiges (1) d'un train de tiges destinée au forage dans la terre, au moins un marquage (5, 6, 7, 10, 11, 12) réalisé sous la forme d'un renfoncement ménagé dans le côté extérieur de la section de train de tiges (1) étant disposé sur le côté extérieur de la section de train de tiges (1), marquage au moyen duquel une abrasion peut être détectée, caractérisé en ce que la section de train de tiges (1) est un boîtier (2) d'un dispositif de forage par battage pour le forage dans la terre, dans lequel est disposé un piston de frappe pour un mouvement de va-et-vient.
  2. Section de train de tiges (1) selon la revendication 1, caractérisée en ce que plusieurs marquages (5, 6, 7, 10, 11, 12) sont disposés sur la section de train de tiges (1), au moyen desquels une abrasion peut être détectée.
  3. Section de train de tiges (1) selon la revendication 2, caractérisée en ce que les marquages (5, 6, 7, 10, 11, 12) comportent une configuration différente.
  4. Section de train de tiges (1) selon la revendication 2 ou 3, caractérisée en ce que les marquages (5, 6, 7, 10, 11, 12) comportent une profondeur différente radialement par rapport à l'axe longitudinal de la section de train de tiges (1).
  5. Section de train de tiges (1) selon l'une des revendications 2 à 4, caractérisée en ce que les marquages (5, 6, 7, 10, 11, 12) comportent des largeurs différentes dans la direction de l'axe longitudinal (X) de la section de train de tiges (1).
  6. Section de train de tiges (1) selon l'une des revendications 2 à 5, caractérisée en ce que les profondeurs dans la direction radiale par rapport à l'axe longitudinal (X) de la section de train de tiges (1) de plusieurs marquages (5, 6, 7, 10, 11, 12) sont choisies de telle sorte que différents degrés d'abrasion sont détectables.
  7. Section de train de tiges (1) selon l'une des revendications précédentes, caractérisée en ce que le marquage (5, 6, 7, 10, 11, 12) s'étend entièrement autour de la circonférence de la section de train de tiges (1).
  8. Section de train de tiges (1) selon l'une des revendications précédentes, caractérisée en ce que le marquage (5, 6, 7, 10, 11, 12) est réalisé en forme de spirale dans la direction circonférentielle de la section de train de tiges (1).
  9. Section de train de tiges (1) selon l'une des revendications précédentes, caractérisée en ce que des marquages (5, 6, 7, 10, 11, 12) sont disposés à distance les uns des autres sur plusieurs zones de la section de train de tiges (1).
  10. Section de train de tiges (1) selon l'une des revendications précédentes, caractérisée en ce que le marquage (5, 6, 7, 10, 11, 12) est arrondi dans l'extension longitudinale radialement par rapport à l'axe longitudinal (X) de la section de train de tiges (1).
  11. Dispositif de forage dans la terre avec une section de train de tiges (1) selon l'une des revendications 1 à 10 et un entraînement qui est conçu pour introduire dans la terre un train de tiges comportant la section de train de tiges (1).
EP19207138.9A 2018-11-09 2019-11-05 Section de train de tiges destinée au forage dans la terre, dispositif de forage dans la terre et utilisation d'une section de train de tiges Active EP3650630B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018008811.2A DE102018008811A1 (de) 2018-11-09 2018-11-09 Bohrstrangabschnitt zum Bohren im Erdreich, Erdbohrvorrichtung und Verwendung eines Bohrstrangabschnitts

Publications (3)

Publication Number Publication Date
EP3650630A1 EP3650630A1 (fr) 2020-05-13
EP3650630C0 EP3650630C0 (fr) 2023-10-25
EP3650630B1 true EP3650630B1 (fr) 2023-10-25

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US (1) US11203905B2 (fr)
EP (1) EP3650630B1 (fr)
AU (1) AU2019261746B2 (fr)
DE (1) DE102018008811A1 (fr)
PL (1) PL3650630T3 (fr)

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EP3650630A1 (fr) 2020-05-13
AU2019261746A1 (en) 2020-05-28
AU2019261746B2 (en) 2021-11-11
PL3650630T3 (pl) 2024-02-12
US11203905B2 (en) 2021-12-21
US20200149355A1 (en) 2020-05-14
DE102018008811A1 (de) 2020-05-14

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