EP3259434B1 - Portion de tige de forage double, tronçon de tige de forage double et procédé pour former une liaison électriquement conductrice dans une portion de tige de forage double - Google Patents

Portion de tige de forage double, tronçon de tige de forage double et procédé pour former une liaison électriquement conductrice dans une portion de tige de forage double Download PDF

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Publication number
EP3259434B1
EP3259434B1 EP16707627.2A EP16707627A EP3259434B1 EP 3259434 B1 EP3259434 B1 EP 3259434B1 EP 16707627 A EP16707627 A EP 16707627A EP 3259434 B1 EP3259434 B1 EP 3259434B1
Authority
EP
European Patent Office
Prior art keywords
rod section
drill rod
conductor
external contact
inner drill
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
EP16707627.2A
Other languages
German (de)
English (en)
Other versions
EP3259434A1 (fr
Inventor
Volker Boike
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
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 and Co KG filed Critical Tracto Technik GmbH and Co KG
Publication of EP3259434A1 publication Critical patent/EP3259434A1/fr
Application granted granted Critical
Publication of EP3259434B1 publication Critical patent/EP3259434B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E21B7/04—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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/028—Electrical or electro-magnetic connections
    • 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
    • E21B17/003—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means
    • 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
    • E21B17/18—Pipes provided with plural fluid passages
    • 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
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/062—Deflecting the direction of boreholes the tool shaft rotating inside a non-rotating guide travelling with the shaft
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/64—Devices for uninterrupted current collection

Definitions

  • the invention relates to a double pipe rod section, a double pipe rod section and a method for forming an electrically conductive connection in a double pipe rod section.
  • a drill head In the case of rod-based drilling in the ground, in particular for the production of so-called horizontal bores, a drill head is driven by means of a drill rod from a drive device arranged on the surface of the earth or in a construction pit.
  • the drill rods used here consist of individual, interconnected rod sections, which - according to the drilling path - are gradually attached to the rear end of the already drilled drill rod and connected to it.
  • a double pipe rod or double rod is used for rock drilling, ie drilling in rock or stony earth formations.
  • the drill head is additionally driven in rotation via an inner rod of the double pipe rod from the drive device arranged on the surface or in the excavation, which also provides for the propulsion of the drill head.
  • the inner linkage is rotatably mounted within an outer linkage of the double pipe linkage.
  • a disadvantage of the previous provision of electrical connections is that the electrical connection for conducting electrical energy - for an electrical voltage or power supply and / or transmission of data - can only be made in the inner pipe rods, since it was previously assumed that the conductor or the cable must be protected in the inner pipe rod.
  • U.S. 5,468,153 A discloses a cordless vortex and method of using it.
  • a rotatable mandrel is described which is disposed in a housing body.
  • a ladder rod is arranged in the mandrel, which ends in an enlarged head with respect to the diameter.
  • the head represents an electrical contact with a cup-shaped counterpart.
  • EP 2 957 710 A1 is postpublished and discloses a drill head and apparatus for making a bore in the earth.
  • the drill head has a sliding contact arrangement for establishing an electrical connection between a first unit and a second unit.
  • the first unit can be coupled with an inner linkage of a double pipe linkage.
  • the second unit can be coupled to an outer linkage of the double pipe linkage. Drilling fluid is passed through the units.
  • the invention was based on the object of creating an improved double pipe rod section, an improved double pipe rod section and an improved method for forming an electrically conductive connection in a double pipe rod section, in which an electrical connection in the annulus between the inner pipe rod and outer pipe rod is also possible is.
  • the core idea of the invention is to lead the at least one conductor provided in the inner rod section out of the inner rod section in such a way that a pick-up present in the annular space between the inner rod section and the outer rod section is in contact with an external contact formed on the inner rod section.
  • An outer contact is formed on the inner linkage section, which is formed essentially in a ring shape around the circumference of the inner linkage section.
  • the external contact can be electrically connected to the at least one conductor of the inner rod section and the electrical signal or the current or the voltage can be tapped by means of the collector present in the annular space between the inner rod section and the outer rod section, since the collector is in contact with the annular external contact of the inner rod .
  • the double pipe rod section has a sealing means for sealing against drilling fluid.
  • the outer contact is formed essentially annularly around the circumference of the inner linkage section, which includes that the outer contact is designed to be closed around the circumference of the inner linkage along the circumference.
  • the extension of the external contact in the longitudinal direction of the inner linkage or inner linkage section can have any shape.
  • the external contact can be designed as a band placed around the internal linkage section.
  • the band can have the same width along the circumference.
  • the extension of the pickup in the direction of the longitudinal axis of the inner linkage is preferably equal to or less than the extension of the external contact in the longitudinal direction of the inner linkage.
  • the double pipe rod section can be a double pipe rod section of an earth drilling device.
  • section includes a region of the double pipe rod in the longitudinal direction.
  • rod section can be understood to mean a “rod section”.
  • An "earth boring device” is understood to mean, in particular, any device which moves a double pipe rod into an existing or to be created channel 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 earth.
  • the earth drilling device can in particular be an HD device (horizontal drilling).
  • conductor within the meaning of the invention includes an electrically conductive conductor, which is used in particular as a cable, i.e. can be designed with an at least partially existing insulation that envelops the conductor.
  • drilling fluid can be conveyed at least in sections through the interior of the inner rod and the annular space between the inner rod and the outer rod. This creates more difficult conditions for the transmission of electrical signals.
  • the at least one conductor is sealed in the area of the annular outer contact in the inner rod section.
  • the term “sealed” in the context of the invention includes, in particular, a sealing of an area with respect to the drilling fluid present at least in sections in the double pipe string.
  • a sealing means is present in the inner rod section, which prevents the passage of drilling fluid into the area of the inner rod section in which the at least one conductor is connected to the external contact.
  • pressure relief is carried out by having at least one through-hole in the inner rod in front of this area or in front of the sealant that creates a fluidic connection between the interior of the inner linkage and the annular space between the inner linkage and the outer linkage.
  • the outer area of the inner rod section in the area of the outer contact is sealed by means of sealing elements spaced apart in the longitudinal direction of the double pipe rod section. This can prevent electrical currents from occurring via the drilling fluid that is present at least in sections in the double pipe string.
  • the consumer is sealed off from the annular space between the inner rod section and the outer rod section, so that undesired electrical (creeping) currents can be reduced.
  • the external contact is preferably electrically isolated from the internal linkage section.
  • an insulating layer which can be designed as an insulating sleeve, can be present between the external contact and the internal linkage.
  • the external contact can be connected non-rotatably to the internal linkage via the insulating layer.
  • a double pipe rod section which comprises an aforementioned double pipe rod section which has a probe present in the annular space between the inner rod and the outer rod.
  • the probe can be connected to the outer rod and connected to the consumer by means of at least one conductor.
  • a method for forming an electrically conductive connection in a double pipe rod section is also provided, the electrically conductive connection being formed between an interior of an inner rod section and the annular space between the inner rod section and the outer rod section. It will a substantially annular outer contact is provided on the inner rod section and a conductor, which is provided in the interior of the inner rod section, is connected to the annular outer contact, a consumer in contact with the outer contact, which is arranged in the annular space, being guided in conductive contact via the outer contact .
  • Figures 1 and 2 show a double pipe linkage in a front area.
  • the Figures 1 and 2 show a double pipe rod section 6 with an outer rod section 1 and an inner rod section 2, an electrical connection being established from the inside of the inner rod section 2 to the annular space 4 between the inner rod section 2 and the outer rod section 1.
  • a probe 3 which is off-center in the double pipe rod can be supplied with energy and / or data.
  • a transmission of energy and / or data in the direction of the probe 3 and / or bidirectional to the probe 3 and from the probe 3 is possible.
  • the double pipe rod section 6 can enable the function of a transmission of energy and / or data between the interior of the inner rod and the annular space 4 between the inner rod and the outer rod.
  • the probe 3 is located in a probe housing which is connected to the outer rod.
  • the inner rod can rotate within the outer rod independently of the rotational movements of the outer rod and drive a drill head.
  • a desired drilling direction can be set by rotating the outer rod.
  • the probe 3 moving along with the outer rod can detect certain values, such as the roll angle or the inclination of the double rod rod, and transmit them to a further unit known from the prior art.
  • the transmission can take place wirelessly and / or wired.
  • a conductor 8 or a cable is routed inside 5 of the hollow inner rod (cf. Fig. 3 ), which can be used to transmit data and / or energy.
  • the conductor 8 or the cable is guided to the outside via a bore and electrically connected to an annular external contact 10, which is designed as a slip ring.
  • the annular outer contact 10 has an electrically insulating sleeve 16 which is firmly seated on the inner rod section. As a result, the annular outer contact is electrically isolated from the inner rod section.
  • the conductor carried out from the inner rod section is clamped to the annular outer contact, for which purpose in the illustrated embodiment Figures 3 and 4th a screw 11 is used.
  • An electrically conductive pickup 13 is in contact with the external contact. In addition to the embodiment shown, several pickups 13 can also be used.
  • the customer or customers 13 are arranged in an insulating sleeve 17 made of non-conductive material.
  • a further conductor 14, to which the probe 3 can be connected, is connected to the receiver or consumers 13. The energy or data pending on the conductor 8 can be transmitted to the further conductor 14.
  • drilling fluid is initially conveyed during the drilling progress to avoid pressure losses through the increasingly longer double pipe rod via the annular space 4 between the inner rod and the outer rod and through the interior of the inner rod.
  • Drilling fluid is discharged in the direction of the drill head, in front of the double pipe rod section in which the electrical connection between the at least one conductor 8 and the external contact is made, through outwardly leading holes 7 in the inner rod, which means that the drilling fluid from the inner rod on the last section up to the drill head is also passed through the annular space 4.
  • the conductor 8 located in the inner rod and rotating with it is sealed against the prevailing drilling fluid pressure by means of a sealant 9.
  • the section of the double pipe rod in the area of the annular external contact is sealed by means of two sealing elements 12 which are spaced apart in the longitudinal direction of the double pipe rod section and which are designed as sealing rings.
  • a further sealing means 15, which is designed as a sealing ring, is also present, which surrounds the further conductor 14.
  • the collector (s) 13 is / are connected in a rotationally fixed manner to the outer rod section, whereby a rotary movement relative to the outer rod is prevented.
  • There is a torque support 18 which prevents a rotary movement of the pickup (s) 13.
  • the collector or the collectors 13 are guided via the annular external contact, following the rotary movement of the external linkage.

Landscapes

  • 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 (6)

  1. Portion de tige de forage double (6) comprenant une portion de tige extérieure (1) et
    une portion de tige intérieure (2) possédant au moins un conducteur (8), le fluide de forage pouvant passer au moins par portions à travers l'intérieur de la tige intérieure (2) et l'espace annulaire (4) entre tige intérieure et tige extérieure, la portion de tige intérieure (2) présentant un contact extérieur (10) sensiblement de forme annulaire relié électriquement avec le conducteur dirigé vers l'extérieur (8) en vue d'établir une liaison électrique du conducteur (8) avec un deuxième conducteur (14) dans l'espace annulaire (4), et un balais (13) relié solidairement en rotation avec la portion de tige extérieure
    (1) est en contact avec le contact extérieur de forme annulaire (10) de la portion de la tige intérieure (2) dans l'espace annulaire (4) entre portion de tige extérieure (1) et portion de tige intérieure (2), le balai (13) étant relié avec l'autre conducteur (14) et la zone extérieure de la portion de tige intérieure (2) est imperméabilisé au moyen des éléments d'étanchéité (12) espacés dans le sens longitudinal de la portion de tige de forage double dans la zone du contact extérieur (10), et le balais (13) étant imperméabilisé à l'espace annulaire (4) entre la portion de tige intérieure (2) et portion de tige extérieure (1), la portion de tige de forage double (6) présentant un produit d'étanchéité (9) dans la portion de tige intérieure (2) qui empêche une infiltration de fluide de forage dans la zone de la portion de tige intérieure (2), où le conducteur (8) est relié au contacteur extérieur (10).
  2. Portion de tige de forage double (6) selon la revendication 1, caractérisée en ce que le contact extérieur de forme annulaire (10) présente un manchon électriquement isolant (16) fixé solidement à la portion de tige intérieure (2).
  3. Portion de tige de forage double (6) selon la revendication 1 ou 2, caractérisée en ce que le contact extérieur (10) est formé comme bague coulissante.
  4. Portion de tige de forage double (6) selon l'une des revendications de 1 à 3, caractérisée en ce que le conducteur (8) est serré par une vis (11) avec le contact extérieur (10).
  5. Tronçon de tige de forage double présentant une portion de tige de forage double (6) selon l'une des revendications 1 à 4, caractérisé en ce qu'une sonde (3) est placée dans l'espace annulaire (4) entre tige intérieure et tige extérieure.
  6. Procédé en vue d'établir une liaison électroconductrice dans une portion de tige de forage double (6), la liaison électroconductrice étant établie entre un conducteur (8) à l'intérieur (5) d'une portion de tige intérieure (2) et un autre conducteur (14) dans l'espace annulaire (4) entre portion de tige intérieure (2) et portion de tige extérieure (1) et le fluide de forage pouvant s'écouler au moins par portions à travers l'intérieur de la tige intérieure et l'espace annulaire (4) entre tige intérieure et tige extérieure, le procédé présentant les étapes suivantes : Mise en place d'un contact extérieur sensiblement de forme annulaire (10) sur la portion de tige intérieure et la connexion électrique du conducteur dirigé vers l'extérieur (8) avec le contact extérieur de forme annulaire (10), un balai (13) en contact avec le contact extérieur relié solidement en rotation avec la portion de tige extérieure (1) dans l'espace annulaire (4) étant conduit au-dessus du contact extérieur (10) et la portion de tige intérieure (2) étant imperméabilisée au moyen d'un produit d'étanchéité (9) se trouvant dans la portion de tige intérieure qui empêche l'infiltration de fluide de forage dans la zone de la portion de tige intérieure (2) où le conducteur (8) est relié avec le contact extérieur (10), et le balai (13) étant relié avec l'autre conducteur (14), et la zone extérieure de la portion de tige intérieure (2) étant imperméabilisée dans la zone du contact extérieur (10) et le balai (13) étant imperméabilisé à l'espace annulaire (4) entre portion de tige intérieure (2) et portion de tige extérieure (1).
EP16707627.2A 2015-02-19 2016-02-15 Portion de tige de forage double, tronçon de tige de forage double et procédé pour former une liaison électriquement conductrice dans une portion de tige de forage double Active EP3259434B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015001969.4A DE102015001969A1 (de) 2015-02-19 2015-02-19 Doppelrohrgestängeabschnitt, Doppelrohrgestängeschuss und Verfahren zum Ausbilden einer elektrisch leitfähigen Verbindung in einem Doppelrohrgestängeabschnitt
PCT/EP2016/000253 WO2016131533A1 (fr) 2015-02-19 2016-02-15 Portion de tige de forage double, tronçon de tige de forage double et procédé pour former une liaison électriquement conductrice dans une portion de tige de forage double

Publications (2)

Publication Number Publication Date
EP3259434A1 EP3259434A1 (fr) 2017-12-27
EP3259434B1 true EP3259434B1 (fr) 2020-09-02

Family

ID=55453114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16707627.2A Active EP3259434B1 (fr) 2015-02-19 2016-02-15 Portion de tige de forage double, tronçon de tige de forage double et procédé pour former une liaison électriquement conductrice dans une portion de tige de forage double

Country Status (6)

Country Link
US (1) US10745977B2 (fr)
EP (1) EP3259434B1 (fr)
JP (1) JP6552627B2 (fr)
AU (1) AU2016222080B2 (fr)
DE (1) DE102015001969A1 (fr)
WO (1) WO2016131533A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117307052A (zh) * 2022-06-20 2023-12-29 中国石油天然气集团有限公司 有缆钻杆及其制作方法

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US5468153A (en) * 1993-12-15 1995-11-21 Drilling Measurements, Inc. Wireline swivel and method of use
US6402524B2 (en) * 1997-10-14 2002-06-11 Tracto-Technik Paul Schimdt Spezialmaschinen Data transfer system
US6808027B2 (en) * 2001-06-11 2004-10-26 Rst (Bvi), Inc. Wellbore directional steering tool
DE10313758A1 (de) * 2003-03-27 2004-10-14 Bauer Spezialtiefbau Gmbh HDI-Gestände mit Online-Datenübertragung
US7268697B2 (en) * 2005-07-20 2007-09-11 Intelliserv, Inc. Laterally translatable data transmission apparatus
US7649475B2 (en) * 2007-01-09 2010-01-19 Hall David R Tool string direct electrical connection
AT508272B1 (de) * 2009-06-08 2011-01-15 Advanced Drilling Solutions Gmbh Vorrichtung zum verbinden von elektrischen leitungen
US20130014992A1 (en) * 2011-03-01 2013-01-17 The Charles Machine Works, Inc. Data Transfer In A Two-Pipe Directional Drilling System
DE102011103220B3 (de) 2011-06-01 2012-10-18 Tracto-Technik Gmbh & Co. Kg Doppelrohrgestängeschuss mit einer im Doppelrohrgestängeschuss angeordneten Sonde, ein Horizontalbohrgerät und ein Sondengehäuse
JP5659093B2 (ja) * 2011-06-27 2015-01-28 ライト工業株式会社 伝送線が備わる管装置の構造及び削孔システム
US9000940B2 (en) * 2012-08-23 2015-04-07 Merlin Technology, Inc. Drill string inground isolator in an MWD system and associated method
DE102014104552A1 (de) * 2014-04-01 2015-10-01 TERRA AG für Tiefbautechnik Bohrkopf und Vorrichtung zum Herstellen einer Bohrung im Erdreich

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Also Published As

Publication number Publication date
JP6552627B2 (ja) 2019-07-31
US10745977B2 (en) 2020-08-18
AU2016222080A1 (en) 2017-09-28
US20180038170A1 (en) 2018-02-08
DE102015001969A1 (de) 2016-08-25
EP3259434A1 (fr) 2017-12-27
AU2016222080B2 (en) 2019-03-14
WO2016131533A1 (fr) 2016-08-25
JP2018508675A (ja) 2018-03-29

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