WO2003080996A1 - Procede permettant de determiner la position d'une tete de forage dans la terre - Google Patents

Procede permettant de determiner la position d'une tete de forage dans la terre Download PDF

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Publication number
WO2003080996A1
WO2003080996A1 PCT/EP2003/003199 EP0303199W WO03080996A1 WO 2003080996 A1 WO2003080996 A1 WO 2003080996A1 EP 0303199 W EP0303199 W EP 0303199W WO 03080996 A1 WO03080996 A1 WO 03080996A1
Authority
WO
WIPO (PCT)
Prior art keywords
drill head
ground
radar
head
transmitter
Prior art date
Application number
PCT/EP2003/003199
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Bayer
Elmar Koch
Meinolf Rameil
Original Assignee
Tracto-Technik 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
Application filed by Tracto-Technik Gmbh filed Critical Tracto-Technik Gmbh
Priority to AU2003227549A priority Critical patent/AU2003227549A1/en
Publication of WO2003080996A1 publication Critical patent/WO2003080996A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
    • 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
    • E21B47/0232—Determining slope or direction of the borehole, e.g. using geomagnetism using electromagnetic energy or detectors therefor at least one of the energy sources or one of the detectors being located on or above the ground surface
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing

Definitions

  • the invention relates to a method for determining the position of a drill head in the ground.
  • the location of drill heads is carried out by means of signal sources arranged in the drill head, such as transmitters, exciters or other types of signal transmitters. These sources are located on the surface or via cable connections in the drill pipe with corresponding receiver devices on the surface.
  • a disadvantage of these methods known in the prior art is that sufficient space must be made available to accommodate the signal source in the drill head. In addition, it is also necessary to store the signal source in a protected and dampened manner in order to ensure that it functions adequately. This has the disadvantage that, due to this, the drill heads have to be designed correspondingly larger and adapted to these requirements.
  • BESTATIGUNGSKOPIE disadvantageously required to supply the signaling sources with energy, such as for example by a battery or another power source. Corresponding space must also be made available in the drill head for this.
  • the object of the present invention is therefore to provide an improved method for determining the position of a drill head in the ground.
  • the drilling head is located by means of radar, preferably by means of pulse radar.
  • radar preferably by means of pulse radar.
  • An electromagnetic pulser in the transmitter antenna or antennas serves as the source for the radar pulses emitted.
  • the reflected waves are picked up again by a radar receiver.
  • this is also located on the surface of the earth.
  • the receiver is preferably a radar receiving antenna located on the surface.
  • the receiving antenna measures the transit times and amplitudes of the electric field strength.
  • the transmitter and receiver can be combined to form a transportable functional unit.
  • the radar signals picked up by the receiver can be evaluated and graphically represented according to the invention.
  • a computer unit can be used as an evaluation unit.
  • the captured radar signals can be amplified or processed in some other way in order to ensure that the drill head and the surrounding soil are represented as accurately as possible in detail and in space.
  • the drill head By locating the drill head by means of radar according to the invention, it can be recorded in the form of a spatial image, the depth detection and the inclination and rotational position detection of the drill head also being possible in an advantageous manner.
  • This advantageously enables a high quality depth resolution.
  • the method according to the invention has the advantage that, in addition to the drill head, the subsoil can also be detected at the same time. In this way, other elements and structures in the subsurface that are in the vicinity of the planned course of the drilling route can also be registered and thus evaluated.
  • This enables, for example, obstacles or impending changes in the subsurface to be recognized in good time and thus addressed, for example, with the necessary tunneling parameters.
  • the method according to the invention therefore finds a wide range of application and is particularly advantageous in the case of trenchless line laying and the course-controlled horizontal drilling technique.
  • the invention can advantageously be avoided by arranging a signaling source in the drill head.
  • a signaling source arranged in the drill head such as the size of the drill head, the poorer controllability of the same, the damping and storage effort and the need for an internal energy supply can be avoided.
  • a drill head can be used that is designed exclusively for its function and can therefore operate more effectively and efficiently in the ground.
  • the penetration depth of the radar depends on the frequency of the antenna used, the physical parameters of the subsurface and other conditions. With antennas of different frequencies, resolutions of different depths can therefore advantageously be achieved according to the invention. Depending on the choice of frequency, either greater depths of penetration or more precise ground resolutions can be achieved.
  • the radar frequency can advantageously be adapted to the trench depth and / or the subsurface.
  • the frequency range to be preferably used according to the invention is approximately 200 to 1200 MHz, preferably 200 to 800 MHz, particularly preferably 300 to 700 MHz.
  • the drill head to be located by means of the method according to the invention, for example, an HDD drill head, materials that reflect the waves emitted by the transmitter particularly strongly.
  • the drill head can have dielectric materials, which has the advantage that particularly good radar reflector detection of the drill head is possible even with problematic soil conditions.
  • other materials that produce this effect can also be used.
  • the dielectric materials can be arranged on the outer edges of the drill head. It is thereby advantageously achieved that the contour and thus the spatial position of the same can be grasped particularly well.
  • the reflective materials can also be arranged on the control surface of the drill head.
  • the drill head can also be coated in whole or in part with corresponding materials, or can have individual reinforcing elements made from these materials.
  • Another advantage of the method according to the invention is that the radar location also shows the propulsion and mode of action of the bentonite rinses in the ground. This has the advantageous effect that the absorption of the mud action limits in the ground is also made visible by the radar technology. As a result, the drilling process can be recorded in almost all details. This advantageously makes it possible to monitor whether the drilling parameters have been optimally selected. For example, the flushing liquid speed, composition or quantity can be regulated and adjusted by detecting the flushing action limits.
  • a drill head can be used for this the one which has a wave transmitter and a wave receiver. These are preferably a radar transmitter or receiver, pulse radar is particularly preferably used.
  • the shaft transmitter and the shaft receiver are arranged in the front area of the drill head, so that the waves, such as radar pulses, are emitted in the direction of advance of the bore.
  • This has the advantageous effect that the earth area located in front of the drill head can be detected in a targeted manner if necessary.
  • This embodiment variant has the advantage that if the radar measurement does not precisely detect obstacle structures in the ground from the surface or their dimensions cannot be determined precisely enough, the additional radar in the drill head can provide information in order to precisely locate and define these obstacles.
  • the targeted detection of the environment directly in front of the drill head advantageously achieves a higher resolution of the drill head environment and thus the accuracy of detection of the soil lying directly in front of the drill head. Antennas in the higher frequency range can also be used for this, since a large penetration depth of several meters is not absolutely necessary.
  • Preferred frequency ranges for a radar system within the drill head are approximately 500 to 1200 MHz, particularly preferably 700MHz to 1000MHz.
  • the radar transmitter in the drill head it is possible according to the invention to only activate the radar transmitter in the drill head, for example, if it becomes apparent from the surface radar measurement that any obstacles appear in the drill route distribution, but these cannot be determined with sufficient accuracy by the surface radar measurement.
  • This is then advantageously carried out by the radar arranged on the drill head.
  • an evaluation unit in the drill head which only transmits data to the surface if parameters are registered that indicate an obstacle.
  • the data received by the radar receiver on the drill head can be transmitted by means of a cable line in the drill pipe to a storage and evaluation unit located on the surface.
  • the cable laying in the drill pipe has the advantage that it is protected against mechanical damage.
  • the storage and evaluation device is preferably a computer which stores the received data and, if necessary, processes it. If necessary, this can be the same one that is used for the surface measurement. This enables an exact radar program of the direct drill head environment to be created.
  • Fig. 1 shows a schematic representation of the operation of the method according to the invention.
  • the 1 shows a carriage 1, which is located on the earth's surface 2. This has a slide equipped with a rotary and thrust drive.
  • the drill head 4 has already been introduced into the soil 5 via a starting pit 3.
  • the drilling head 4 is a steerable inclined surface drilling head.
  • On the earth's surface 2 there is a radar transmitter and receiver unit 6, which emits radar pulses 7 into the earth 5. These are reflected by the drill head 4, which is coated with dielectric materials, and collected by the receiving antenna 8.
  • the transmitting and receiving unit 6 is mobile and can be moved over the earth's surface 2. This makes it possible to precisely follow the advance of the drill head 4 and also to determine obstacles in the vicinity of the drill head 4 and, if necessary, to control them in such a way that it reverses them.
  • the Data recorded by the receiving antenna 8 can be processed further in a storage and evaluation device (not shown) and can be displayed graphically in a radar program.
  • the drilling head 4 is additionally equipped with a radar transmission and reception unit, this can be activated as soon as an obstacle is located in the vicinity of the drilling head 4 due to the measurement carried out by the surface 2 by means of the transmission and reception device 6, but this is not can be represented with sufficient accuracy to ensure safe reversal.
  • the radar transmitter and receiver unit can then be used on the drill head 4 in order to generate a more accurate picture of the immediate surroundings of the drill head.
  • This embodiment also has the advantage that the surroundings of the drill head can also be determined if strata of earth occur near the surface, which impede or do not make possible a radar measurement from the earth's surface.
  • the radar in the drill head it is also possible to detect the soil in well-conducting layers, since the layer thickness to be penetrated is less than when using it from the surface.
  • the surrounding area of a drilling head located in the ground is precisely analyzed, the spatial position, the inclination and the angle of rotation of the drilling head being able to be determined and an ideal path of the drilling head through the underground can be determined taking into account the underground structures visible through the method , As a result, the method according to the invention is superior to those known in the prior art.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geophysics (AREA)
  • Mining & Mineral Resources (AREA)
  • Electromagnetism (AREA)
  • Remote Sensing (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

La présente invention concerne un procédé permettant de déterminer la position d'une tête de forage (4) dans la terre (5), la position de cette tête de forage dans la terre étant déterminée au moyen d'ondes propagées (7), qui sont réfléchies par ladite tête de forage. Le repérage de cette tête de forage permet une localisation précise de celle-ci dans la terre et il est, en outre, possible d'enregistrer cette tête sous la forme d'une image stéréoscopique. De plus, ledit procédé offre l'avantage de permettre l'obtention d'une image du sous-sol, outre de la tête de forage, de sorte que des obstacles éventuels dans la trajectoire de forage peuvent être identifiés à temps et éventuellement évités.
PCT/EP2003/003199 2002-03-27 2003-03-27 Procede permettant de determiner la position d'une tete de forage dans la terre WO2003080996A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003227549A AU2003227549A1 (en) 2002-03-27 2003-03-27 Method for determining the position of a drill head in the ground

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10213769.2 2002-03-27
DE10213769A DE10213769A1 (de) 2002-03-27 2002-03-27 Verfahren zur Bestimmung der Position eines Bohrkopfes im Erdreich

Publications (1)

Publication Number Publication Date
WO2003080996A1 true WO2003080996A1 (fr) 2003-10-02

Family

ID=28050917

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/003199 WO2003080996A1 (fr) 2002-03-27 2003-03-27 Procede permettant de determiner la position d'une tete de forage dans la terre

Country Status (3)

Country Link
AU (1) AU2003227549A1 (fr)
DE (1) DE10213769A1 (fr)
WO (1) WO2003080996A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013001139A1 (fr) * 2011-06-27 2013-01-03 Aineko Oy Procédé de positionnement pour une tête de forage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010008823B4 (de) 2010-02-22 2012-10-31 Heinz Plum Verfahren und Vorrichtungen zur Vermessung der räumlichen Lage eines Bohrkopfs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2866971A (en) * 1956-09-05 1958-12-30 Kenneth S Kelleher Radiant energy reflector
WO1992009906A1 (fr) * 1990-11-21 1992-06-11 Loefberg Hans Systeme de detection electronique
DE4340130A1 (de) * 1993-11-25 1995-06-01 Wolfgang Dipl Ing Miegel Verfahren zur Ortung von Strukturen
EP0873465A1 (fr) * 1996-01-11 1998-10-28 Vermeer Manufacturing Company Systeme de forage souterrain sans tranchee avec localisation de l'outil de forage
DE19847688A1 (de) * 1998-10-15 2000-05-04 Hilti Ag Verfahren und Sensor zur Entdeckung von Fremdkörpern in einem Medium mittels Radar

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831173A (en) * 1969-12-17 1974-08-20 Massachusetts Inst Technology Ground radar system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2866971A (en) * 1956-09-05 1958-12-30 Kenneth S Kelleher Radiant energy reflector
WO1992009906A1 (fr) * 1990-11-21 1992-06-11 Loefberg Hans Systeme de detection electronique
DE4340130A1 (de) * 1993-11-25 1995-06-01 Wolfgang Dipl Ing Miegel Verfahren zur Ortung von Strukturen
EP0873465A1 (fr) * 1996-01-11 1998-10-28 Vermeer Manufacturing Company Systeme de forage souterrain sans tranchee avec localisation de l'outil de forage
DE19847688A1 (de) * 1998-10-15 2000-05-04 Hilti Ag Verfahren und Sensor zur Entdeckung von Fremdkörpern in einem Medium mittels Radar

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013001139A1 (fr) * 2011-06-27 2013-01-03 Aineko Oy Procédé de positionnement pour une tête de forage

Also Published As

Publication number Publication date
AU2003227549A1 (en) 2003-10-08
DE10213769A1 (de) 2003-10-23

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