EP3214260B1 - Verfahren zum einbringen einer bohrung in das erdreich und erdbohrvorrichtung sowie verwendung - Google Patents

Verfahren zum einbringen einer bohrung in das erdreich und erdbohrvorrichtung sowie verwendung Download PDF

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Publication number
EP3214260B1
EP3214260B1 EP17000323.0A EP17000323A EP3214260B1 EP 3214260 B1 EP3214260 B1 EP 3214260B1 EP 17000323 A EP17000323 A EP 17000323A EP 3214260 B1 EP3214260 B1 EP 3214260B1
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EP
European Patent Office
Prior art keywords
drill
drill head
pattern
detected
heads
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
EP17000323.0A
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German (de)
English (en)
French (fr)
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EP3214260A1 (de
Inventor
Hans-Joachim Bayer
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
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Tracto Technik GmbH and Co KG
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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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/024—Determining slope or direction of devices in the borehole
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/046—Directional drilling horizontal drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
    • E21B47/0228—Determining slope or direction of the borehole, e.g. using geomagnetism using electromagnetic energy or detectors therefor
    • 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
    • E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
    • E21B47/092—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes by detecting magnetic anomalies

Definitions

  • the invention relates to a method for drilling a hole in the ground with two drill heads running towards one another and an earth drilling device with a drill head.
  • a mutually converging borehole in which a borehole is created in each case by means of two earth boring devices, which are aligned with one another in such a way that a continuous borehole is to result, i.e. the two boreholes meet at their respective target section (end point).
  • the hitherto achievable "accuracy" in drilling towards each other is low and associated with high costs.
  • a hitherto achievable "accuracy" of +/- 0.5 meters initially seems sufficient, but if the two bores do not meet congruently, it is not possible, for example, to insert a pipe into the resulting bore. Therefore, until now several, often three to eight, corrective bores have been required in the target section. Drilling towards each other is therefore time-consuming and costly.
  • the gyroscopic system in a drill head can be used to determine where the drill head is currently located.
  • Such a system is expensive and there is still a risk in the area of the target section with regard to the alignment of the two drill heads to one another on the same axis and level, so that this system is also associated with time and correction effort, which is also cost-intensive.
  • U.S. 2008/041626 A1 discloses drilling mutually parallel boreholes which are drilled simultaneously, with a magnetic field being generated and received in each case in the drill string and the geometric arrangement of the two drill strings being determined.
  • U.S. 2010/224415 A1 discloses a method and apparatus of U-shaped boreholes wherein first and second boreholes as legs of the U can be drilled simultaneously or sequentially. If the two boreholes are drilled at the same time, the success of the accuracy of the mutual drilling can be determined. To improve the accuracy, methods based on magnetism are described, such as a "magnetic guidance tool” or a “rotating magnet ranging system”.
  • the invention was based on the object of creating an improved method for drilling a hole in the ground with two drill heads running towards one another, which is simple in design and/or reduces the time and correction effort for a drilling towards one another.
  • a (partial) hole is first created in each case, which results in a continuous hole when the two (partial) holes meet.
  • an earth drilling device should be specified with which improved mutual drilling can be achieved.
  • the idea on which the invention is based is that at least one of the two drill heads detects the other drill head and, based on the detection of the other drill head, at least one of the two drill heads is adjusted in its advance direction in relation to the other drill head.
  • the basic idea is therefore that the location, position and/or alignment of the drill head is not primarily important for the success of the mutually converging drilling, but rather the location, position and/or alignment of the other drill head.
  • the alignment does not take place on the basis of a predetermined path that has to be reached, but rather on the basis of the recorded location, position and/or orientation of the other drill head, which is/was also moved to create the mutually-oriented bore.
  • the advancing direction of at least one of the two drill heads is adjusted using a non-static reference point outside of the at least one drilling head, which is a departure from the hitherto increasing accuracy method.
  • the invention provides a method for drilling a hole in the ground with two drill heads running towards each other according to claim 1.
  • one of the two drill heads is detected by means of a detection device on the other drill head and depending on the detected drill head, the direction of advance is at least one of the two Drill heads adjusted in relation to the other drill head. In this way it can be achieved that in response to the detection of the other drill head, the advancing direction can be adapted towards one another.
  • At least one of the two drill heads drilling towards each other is aligned with the other (moving or having performed a movement) of the two drill heads.
  • the term “drill head” includes a front area of a drill rod of an earth drilling device.
  • An “earth drilling device” is understood to mean, in particular, any device which moves a drill rod containing drill rod sections into a channel to be created in the ground in order to create or widen a bore, in particular a horizontal bore, or to pull lines or other long bodies into the ground.
  • the earth drilling device can in particular be an HD (horizontal drilling) device.
  • a “perforation device” comprises a device that drives a drill rod, which works in a soil-displacing manner, and the drill rod can be driven in rotation in the longitudinal axial direction of the drill rod at least over a partial angular range.
  • the term "HD" in the context of the present invention includes a bore that runs essentially horizontally or can be a bore that is inclined to the horizontal.
  • the drill head can in particular be a drill head in which nozzles are present, through which drilling fluid can be discharged into the ground in the area around the drill head.
  • a drilling fluid containing bentonite preferably in the form of particles, can be used.
  • the drilling fluid may be pressurized to allow the pressurized drilling fluid to exit nozzles on the drill bit.
  • the soil in the area around the drill head can be loosened by means of the drilling fluid.
  • the drilling fluid escaping from the drill head, which can be pressurized, can loosen the soil.
  • the earth drilling device can have a corresponding pump for applying the drilling fluid.
  • the drill pipe which connects the earth drilling device to the drill head, can have a channel through which the drilling fluid can be drawn, for example from a storage container, which can be arranged in particular above ground, is transported to the drilling head.
  • the detection unit is designed in such a way that it enables electromagnetic radiation to be emitted and received.
  • the detection unit can be part of a unit for transmitting and receiving electromagnetic radiation.
  • the detection unit can also be separate from a unit for transmitting and receiving electromagnetic radiation.
  • Electrical radiation within the meaning of the invention includes any electromagnetic wave, in particular radar waves, so that the detection unit can be designed as a radar.
  • the outer contour of other objects in the ground can be detected in a simple manner by means of a radar.
  • the shape and position of another drill head can be detected with a radar antenna because the other drill head is easily recognizable due to the hard reflection on the metal.
  • the distance to the other of the two drill heads can be easily determined.
  • the front contour of the other drill head can be determined.
  • at least one of the following parameters, which describe the position of the front contour, of the other drill head can be recorded: Inclination (pitch), roll (tools face position), axis (level and lateral alignment).
  • Inclination pitch
  • roll tool face position
  • axis level and lateral alignment
  • one of the two drill heads after the other drill head has been slowly retracted, can move precisely and without deviations into the bore of the retracting drill head and, in particular, can travel through it.
  • a joint borehole expansion and a joint pipe or cable pull-in can be made possible.
  • long boreholes can be made possible, which can be drilled with relatively small earth drilling devices—and therefore inexpensively.
  • the rock loosening zone in front of the drill head is detected by means of the detection unit.
  • rock loosening zone includes an area in front of the drill head in which drilling fluid escaping from the drill head loosens the soil in front of the drill head.
  • the drilling fluid can exit the drill head by means of nozzles configured in the drill head.
  • the drilling fluid can be pressurized so that there is a (high) pressure drilling fluid and a Rock loosening zone is formed in front of the drill head.
  • a hydro-mechanical performance component during tunneling in loose rock is addressed, into which the mechanical component can then penetrate more easily.
  • the area of the rock loosening zone ie a hydromechanical loosening zone, is usually in the range of a few centimeters, in particular 7 to 17 centimeters, preferably 10 centimeters to 15 centimeters.
  • radar waves detect foreign bodies, differences in density in the ground through reflection (return of the wave signals), which means that they can also identify the location of former service trenches, can depict clay deposits and clay horizons, can identify the surface of the groundwater and can, for example, be detected by particularly hard reflection of metal deposits ( metal pipes; foreign drilling rods) precisely.
  • another drill head such as the one approaching the drill head here when drilling towards one another, can be recorded "razor-sharp", which means that the contour can be imaged and the distance from the drill head can be determined.
  • a pattern detected by one of the two drill heads is compared with a reference pattern.
  • the term "pattern" within the meaning of the invention includes a contour of the detected drill head, the contour containing in particular the drill head front of the drill head.
  • the reference pattern is a pattern stored in memory which describes the other drill head being detected in a predetermined position or positions.
  • a computer unit in the form of a (mini) computer or another unit, which processes data using programmable rules, can be provided in addition to or integrated in the detection unit. Provision can be made for the detection unit to be designed in such a way that the pattern can be formed by the detection unit from the reflected signals and can be compared with at least one of the patterns stored in the memory.
  • the data of the acquisition unit are transmitted to a unit arranged in the drill string or to a unit arranged above the ground, wherein the unit in the drill string or unit arranged above the ground can have the computer unit.
  • the unit can be the machine control station of the earth drilling device.
  • the term "above ground” also includes placement in a launch or target pit.
  • Software for pattern recognition is installed on the computer unit, with which the pattern from the recorded drill head is compared with one or more comparison patterns become. In this way, the recorded drill head can be precisely located and lateral and/or height deviations can be determined. The direction of advance of at least one of the two drilling heads is adjusted if predetermined deviations between the detected sample and the reference sample(s) are exceeded.
  • An adjustment can then be carried out automatically or by the machine operator in one of the two earth drilling directions, in that the exceeding of the predetermined deviation is transmitted to the machine control station and corrected by the machine operator using counter-control commands on an orientation unit, or an automatic control (e.g. based on fuzzy logic) corresponding counter-control commands generated without human intervention and transmitted to an orientation unit of the machine control station.
  • an automatic control e.g. based on fuzzy logic
  • the two drill heads can be aligned towards one another. Both drill heads can thus experience an approximation and optimization with regard to drilling towards one another.
  • the method according to the invention can thus be implemented not only in that one of the two drill heads has a detection unit, but both.
  • the invention also provides an earth boring device comprising a boring head according to claim 4.
  • the invention also provides a use of a detection unit in a drill head according to claim 5.
  • the drill heads 1, 2 are connected to a drill rod 3 or drill string, which consists of a large number of rod sections connected to one another.
  • the rod sections are connected to each other according to the course of the drilling.
  • the drill heads 1, 2 are advanced by means of the drill rod 3 by a drive device 4 arranged on the earth's surface and are (temporarily) driven in rotation.
  • the rotating drive serves to improve propulsion of the drill heads 1, 2 in the ground and on the other hand, a control function is achieved in connection with the formation of at least one of the two drill heads 1, 2 as an inclined drill head.
  • the drill head 1, 2 designed as an inclined drill head When the drill head 1, 2 designed as an inclined drill head is pushed forward through the ground, the inclined surface of the drill head 1, 2 produces a deflection, the effect of which is balanced over a complete revolution of the drill head 1, 2. If the drill heads 1, 2 designed as oblique drilling heads are driven in continuous rotation during the advance, the earth drilling device drills straight ahead.
  • the Erdbohrvorraum is reversed by the drill heads 1, 2 being stopped in a defined alignment, ie a specific position of the inclined surface of the drill heads 1, 2 (the so-called "roll angle") and being advanced further at the same time.
  • the deflection caused by the inclined surface then leads to an arcuate course of the drill. This continues until the desired new drilling direction is reached.
  • the rotary drive is then switched on again to continue drilling straight ahead.
  • each of the two drill heads 1, 2 has a radar unit 5 which is arranged behind or in the inclined surface of the drill heads 1, 2. This defines a detection range that (partially) precedes the drill head 1 , 2 .
  • the drill heads 1 , 2 each have a detection unit 6 functionally connected to the radar unit 5 .
  • the radar unit 5 can be a radar designed as a combined front and side radar, which emits bundled electromagnetic waves as a primary signal and receives the signals reflected from objects as secondary signals.
  • the detection unit 6 evaluates the reflected (secondary) signals from the radar unit 5 in order to obtain information about the objects, with the outer contour of the detected objects being determined in particular.
  • the radar waves reflected from the drill head front of the respective other drill head 1, 2 can be evaluated using pattern recognition software installed in a computer unit 7 in the respective drill head 1, 2.
  • the inclination, roll, lateral deviation and/or height deviation of the other drill head 1, 2 can be detected by means of the pattern recognition software.
  • One or more reference patterns for the drill head 1, 2 are stored in the memory of the computer unit 7 for comparison purposes.
  • the direction of advance of at least one of the two drill heads 1, 2 is adjusted when a predetermined deviation between the detected pattern and the reference pattern(s) is exceeded.
  • two adjustments are possible.
  • an automatic adjustment can be carried out by reacting to the comparison of the computer unit 7 commands are generated, which are transmitted to the machine control station of the earth drilling device (drive device 4) in order to adapt the advance direction to an orientation unit 8 of the drive device 4 of at least one of the two drilling heads 1, 2.
  • the adjustment can be shown on a display of the drive device 4 .

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP17000323.0A 2016-03-03 2017-03-02 Verfahren zum einbringen einer bohrung in das erdreich und erdbohrvorrichtung sowie verwendung Active EP3214260B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016002479.8A DE102016002479A1 (de) 2016-03-03 2016-03-03 Verfahren zum Einbringen einer Bohrung in das Erdreich und Erdbohrvorrichtung sowie Verwendung

Publications (2)

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EP3214260A1 EP3214260A1 (de) 2017-09-06
EP3214260B1 true EP3214260B1 (de) 2023-04-26

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EP17000323.0A Active EP3214260B1 (de) 2016-03-03 2017-03-02 Verfahren zum einbringen einer bohrung in das erdreich und erdbohrvorrichtung sowie verwendung

Country Status (4)

Country Link
US (1) US10400576B2 (ja)
EP (1) EP3214260B1 (ja)
JP (1) JP6594363B2 (ja)
DE (1) DE102016002479A1 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0372195A (ja) * 1989-08-11 1991-03-27 Komatsu Ltd 地中掘削機
JP2010059678A (ja) * 2008-09-03 2010-03-18 Taisei Corp 掘進機同士の地中接合方法および掘進機の位置検出方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016942A (en) 1972-06-10 1977-04-12 Trunkline Gas Company Method and apparatus for indicating the position of one well bore with respect to a second well bore
JPH0781483B2 (ja) 1989-08-12 1995-08-30 株式会社ニッソー 穴の掘削方法
JP3779808B2 (ja) 1997-12-25 2006-05-31 大阪瓦斯株式会社 地中隠蔽物の検出装置
DE10309144A1 (de) 2002-03-27 2003-11-13 Tracto Technik Bohrkopf und Verfahren für das steuerbare Horizontalbohren
WO2006053434A1 (en) * 2004-11-19 2006-05-26 Halliburton Energy Services, Inc. Methods and apparatus for drilling, completing and configuring u-tube boreholes
US7703548B2 (en) 2006-08-16 2010-04-27 Schlumberger Technology Corporation Magnetic ranging while drilling parallel wells
DE102008026456B4 (de) 2008-06-03 2012-05-24 Tracto-Technik Gmbh & Co. Kg Bohrkopf
CN104919136B (zh) 2012-12-21 2018-07-10 哈利伯顿能源服务公司 使用第三井参照来执行距离测量的系统和方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0372195A (ja) * 1989-08-11 1991-03-27 Komatsu Ltd 地中掘削機
JP2010059678A (ja) * 2008-09-03 2010-03-18 Taisei Corp 掘進機同士の地中接合方法および掘進機の位置検出方法

Also Published As

Publication number Publication date
DE102016002479A1 (de) 2017-09-07
JP6594363B2 (ja) 2019-10-23
JP2017160777A (ja) 2017-09-14
US20170254192A1 (en) 2017-09-07
EP3214260A1 (de) 2017-09-06
US10400576B2 (en) 2019-09-03

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