EP0440123A1 - Dispositif pour la transmission de signaux dans un trou de forage - Google Patents

Dispositif pour la transmission de signaux dans un trou de forage Download PDF

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Publication number
EP0440123A1
EP0440123A1 EP91101043A EP91101043A EP0440123A1 EP 0440123 A1 EP0440123 A1 EP 0440123A1 EP 91101043 A EP91101043 A EP 91101043A EP 91101043 A EP91101043 A EP 91101043A EP 0440123 A1 EP0440123 A1 EP 0440123A1
Authority
EP
European Patent Office
Prior art keywords
tubes
drill string
electrically
drilling
spacers
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.)
Granted
Application number
EP91101043A
Other languages
German (de)
English (en)
Other versions
EP0440123B1 (fr
Inventor
Rainer Dr. Jürgens
Dagobert Feld
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.)
Baker Hughes Holdings LLC
Original Assignee
Baker Hughes Inc
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 Baker Hughes Inc filed Critical Baker Hughes Inc
Publication of EP0440123A1 publication Critical patent/EP0440123A1/fr
Application granted granted Critical
Publication of EP0440123B1 publication Critical patent/EP0440123B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/60—Connections between or with tubular conductors
    • 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

Definitions

  • the invention relates to a device for, in particular, shaft drilling with a drill string, which comprises inner tubes which delimit inner flow spaces and which enclose outer tubes with spacing to form outer flow spaces, according to the preamble of claim 1.
  • Devices of the aforementioned type with a drill string of double-walled drill pipes to be fastened to one another are used, for example, for shaft drilling, the double-walled drill pipe comprising an outer pipe and an inner pipe and a flushing medium generally being pumped to the bottom of the hole in the annular space between the inner pipe and the outer pipe, past the drill head can flow into the inner flow space bounded by the inner pipe and can convey the cuttings through the inner flow space to the surface.
  • special cables for the electrical transmission of measurement and control signals are to be provided.
  • such cables are not only extremely wear-resistant and therefore prone to failure, in particular in the case of such double-wall pipes to be provided and attached using only special structural measures. The installation and removal of the drill string with the inner and outer pipes to be fixed together is considerably more difficult.
  • the device of the type mentioned is characterized by the features specified in the characterizing part of claim 1.
  • the inventive design of the device enables the transmission of measurement and control signals as well as energy between the surface of the earth or the mouth of the borehole and the bottom of the borehole in a wear-resistant manner, without the need for particularly fault-prone transmission cables.
  • the mutually insulated inner and outer tubes of the tubing form the electrical conductors of a two-wire system, which also in areas of rotary unions, for. B. rotary drive, drill head and the like.
  • the electrical insulation is to be provided in a simple manner.
  • the electrical insulation between the inner and outer tubing can be implemented in a structurally simple manner by the electrically non-conductive design of the spacers.
  • the spacers can be produced, for example, by producing the spacers from an electrically non-conductive material, for example plastic and the like, or by a suitable coating, for.
  • the inner tubes to be connected to one another at their ends are to be provided at the ends with electrical contacts which ensure a functionally reliable, automatic electrical connection when fastening the drill string via the threads of the outer tubes. It is preferred to find contact elements in the form of electrically conductive worm springs or electrically conductive contact compartments made of, for. B.
  • electrical contact units such as slip ring transmission unit, induction coil transmission unit and the like, can be used, in particular in circumstances in which different speeds between the drill string and transducer or transducer are to be taken into account Find.
  • the exemplary embodiment illustrated in the drawing of the drilling device is designed as a shaft drilling device with a drill bit 2 and a drilling drive 3.
  • the drill string generally numbered 4, consists of double-walled tubes 5 screwed together.
  • the double-walled tubes 5 have outer tubes 6 and inner tubes 7.
  • the inner tube delimits an inner flow space 8.
  • the outer tube 6 encasing the inner tube 7 at a distance, together with the inner tube, delimits an annular outer flow space 9.
  • the inner tube 7 is supported on the outer tube by spacers 10 made of an electrically non-conductive material.
  • the inner tube 7 carries a perforated centering piece 11 at its upper end in order to hold the inner tube 7 radially and axially.
  • This centering piece 11 also forms a non-conductive spacer 10.
  • a plastic sleeve 12 is located between the outer tube 6 and the centering piece 11, which enables the inner tube 7 to be held without play.
  • the sleeve element which is placed on the pin of the following tube.
  • a centering piece 13 is also provided, which is also made of plastic and also forms spacers 10.
  • the spigot and socket part of the inner tube are arranged in relation to the outer tube 6 in such a way that the inner connection is automatically centered when the outer tubes 6 are screwed on and can thus be introduced without additional measures.
  • the sleeve and pin elements lie in a flow direction 14 of a z. B. flushing medium favorable arrangement.
  • the outer tubes 6 and the inner tubes 7 made of a metallic material are, however, insulated from each other as electrical conductors for the transmission of measurement and control signals also, for example, energy, formed between the earth's surface and the bottom of the borehole during drilling operations.
  • the spacers 10 are not electrically conductive, so that the inner tubes 7 and the outer tubes 6 can transmit measurement and control signals as conductors of a two-wire system.
  • a secure electrical connection is made at all connection points of inner and outer pipes 6, 7.
  • the threaded connections 15 of the outer tubes 6 are provided with an electrically conductive thread grease.
  • a first mold recess 16 and a second mold recess 17 are provided in the lateral surface.
  • a worm spring 19 can be inserted into the mold recess 16 and, after fitting an adjacent inner tube, ensures a secure electrical connection of the interconnected inner tubes 7.
  • An O-ring 18 is arranged in the mold recess for sealing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Earth Drilling (AREA)
EP19910101043 1990-01-31 1991-01-28 Dispositif pour la transmission de signaux dans un trou de forage Expired - Lifetime EP0440123B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4002795 1990-01-31
DE19904002795 DE4002795C1 (fr) 1990-01-31 1990-01-31

Publications (2)

Publication Number Publication Date
EP0440123A1 true EP0440123A1 (fr) 1991-08-07
EP0440123B1 EP0440123B1 (fr) 1994-05-18

Family

ID=6399123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910101043 Expired - Lifetime EP0440123B1 (fr) 1990-01-31 1991-01-28 Dispositif pour la transmission de signaux dans un trou de forage

Country Status (3)

Country Link
EP (1) EP0440123B1 (fr)
CA (1) CA2035412A1 (fr)
DE (1) DE4002795C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353148A (en) * 1999-08-03 2001-02-14 Shell Int Research Well conduits for supporting measuring and ancillary equipment
CN117005856A (zh) * 2023-08-17 2023-11-07 上海久卓机电设备有限公司 一种满足多介质高压输送及电信号传送的连续回转装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010018383A1 (de) * 2010-04-26 2011-10-27 Ee Technologie Gmbh Bohr- oder Förderrohrgestänge
CN101824983A (zh) * 2010-05-06 2010-09-08 煤炭科学研究总院西安研究院 一种信号传输装置
WO2014046674A1 (fr) * 2012-09-21 2014-03-27 Halliburton Energy Services, Inc. Système de télémétrie câblé à double enveloppe
CN108442887B (zh) * 2018-03-22 2019-10-25 西南石油大学 一种可补偿自清洁式动力电钻杆
CN113027356A (zh) * 2021-03-30 2021-06-25 中原工学院 一种井下开采随钻测量无线传输钻杆及其应用

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2395861A (en) * 1941-06-12 1946-03-05 Cyrus H Fraser Transmission line joint
EP0063444A1 (fr) * 1981-04-10 1982-10-27 Framo Developments (U.K.) Limited Système de pompe submersible à entraînement électrique
US4643843A (en) * 1985-06-03 1987-02-17 Lowdon Harold L Preparation for improving the reliability of electrical connections
US4683944A (en) * 1985-05-06 1987-08-04 Innotech Energy Corporation Drill pipes and casings utilizing multi-conduit tubulars
EP0257744A2 (fr) * 1986-07-01 1988-03-02 Framo Developments (U.K.) Limited Système de forage
US4785852A (en) * 1981-10-12 1988-11-22 Mitsubishi Denki Kabushiki Kaisha Conduct pipe covered with electrically insulating material
EP0296788A2 (fr) * 1987-06-24 1988-12-28 Framo Developments (U.K.) Limited Dispositif de conducteur électrique pour système de tuyaux

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2395861A (en) * 1941-06-12 1946-03-05 Cyrus H Fraser Transmission line joint
EP0063444A1 (fr) * 1981-04-10 1982-10-27 Framo Developments (U.K.) Limited Système de pompe submersible à entraînement électrique
US4785852A (en) * 1981-10-12 1988-11-22 Mitsubishi Denki Kabushiki Kaisha Conduct pipe covered with electrically insulating material
US4683944A (en) * 1985-05-06 1987-08-04 Innotech Energy Corporation Drill pipes and casings utilizing multi-conduit tubulars
US4643843A (en) * 1985-06-03 1987-02-17 Lowdon Harold L Preparation for improving the reliability of electrical connections
EP0257744A2 (fr) * 1986-07-01 1988-03-02 Framo Developments (U.K.) Limited Système de forage
EP0296788A2 (fr) * 1987-06-24 1988-12-28 Framo Developments (U.K.) Limited Dispositif de conducteur électrique pour système de tuyaux

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353148A (en) * 1999-08-03 2001-02-14 Shell Int Research Well conduits for supporting measuring and ancillary equipment
GB2353148B (en) * 1999-08-03 2003-10-22 Shell Int Research Apparatus for downhole measurement
CN117005856A (zh) * 2023-08-17 2023-11-07 上海久卓机电设备有限公司 一种满足多介质高压输送及电信号传送的连续回转装置

Also Published As

Publication number Publication date
CA2035412A1 (fr) 1991-08-01
DE4002795C1 (fr) 1991-05-23
EP0440123B1 (fr) 1994-05-18

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