EP1706577A2 - Tige de forage pour des forages profonds - Google Patents

Tige de forage pour des forages profonds

Info

Publication number
EP1706577A2
EP1706577A2 EP04804462A EP04804462A EP1706577A2 EP 1706577 A2 EP1706577 A2 EP 1706577A2 EP 04804462 A EP04804462 A EP 04804462A EP 04804462 A EP04804462 A EP 04804462A EP 1706577 A2 EP1706577 A2 EP 1706577A2
Authority
EP
European Patent Office
Prior art keywords
pipe
sleeve
conductor
drill pipe
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.)
Withdrawn
Application number
EP04804462A
Other languages
German (de)
English (en)
Inventor
Magdalena Rotthäuser
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.)
DTB Patente GmbH
Original Assignee
DTB Patente 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 DTB Patente GmbH filed Critical DTB Patente GmbH
Publication of EP1706577A2 publication Critical patent/EP1706577A2/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • E21B17/0285—Electrical or electro-magnetic connections characterised by electrically insulating elements
    • 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

Definitions

  • the present invention relates on the one hand to a drill pipe according to the common preamble of claims 1 and 5. Furthermore, the invention relates to a sleeve according to the common preamble of claims 13 and 18. Furthermore, the invention relates to a drill pipe for deep drilling according to claim 27.
  • a drill pipe with a drill pipe body made of electrically conductive material in which an electrical pipe conductor is guided through and connected to a contact connection arranged at the end of the drill pipe body, the pipe conductor and the contact connection being electrically insulated from the drill pipe body.
  • the electrical conductor is guided in a protective pipe.
  • the protective tube with the conductor extends in the longitudinal direction along the inner wall of the drill pipe body and is of helical design and in this form is pressed resiliently against the inner wall of the axial bore of the drill pipe body.
  • Impairments of the protective tube and of the conductor arranged inside the protective tube cannot, however, be ruled out in the case of a drilling fluid, the irrigation fluid being pumped through the drill string at a very high speed.
  • tools that are lowered through the drill string can stick to the windings of the protective tube and damage the protective tube or the conductor.
  • the object of the present invention is to provide a drill pipe, a sleeve and a drill pipe, each of the type mentioned at the outset, with which it is possible to transmit electrical energy and / or data from above ground to the bottom of the borehole and back with high security and low susceptibility to malfunction transferred to.
  • the inventive design of the drill pipes on the one hand and sleeves on the other hand in connection with the respective conductors and contact connections results in a system, wherein when connecting the drill pipes to the sleeves to extend the drill pipe, an electrically conductive connection via two poles results.
  • One pole is formed by the drill rod body and the other pole by the conductor arranged therein. This then makes it possible to transmit electrical energy from anywhere to any point in the borehole and data via the conductor immediately after several days.
  • the conductor can be made of such a material that both energy and data transfer is possible.
  • the drill pipes and the sleeves are designed essentially in the same way.
  • the pipe conductor is fixed on the inside of the pipe and the socket conductor is fixed on the inside of the buffer.
  • a fixation in the interior of the drill pipe is necessary because the drilling fluid is pumped through the drill pipe string at very high speeds and the conductor could be impaired without sufficient fixation.
  • a longitudinal groove is provided on the inside of the drill pipe body or on the inside of the socket of the socket body to reliably protect the conductor within the rod. The groove can be realized both in new and in already used drill pipes and sleeves using an appropriate special device, so that the invention can also be easily retrofitted.
  • the conductor is protected inside the strand by the groove, which preferably runs parallel to the central axis of the rod, in particular if the depth of the groove is greater than the diameter of the conductor, so that the conductor is completely received in the groove.
  • the groove preferably runs parallel to the central axis of the rod, in particular if the depth of the groove is greater than the diameter of the conductor, so that the conductor is completely received in the groove.
  • to fix the conductor in the groove it should be cast in via insulation.
  • An electrical insulation layer is applied, in particular vapor-deposited, the insulation layer preferably covering the conductor.
  • the pipe conductor or the socket conductor is tubular, that the pipe conductor or the socket conductor is guided through the drill pipe body or the socket body and / or the Drilled tubular body or the sleeve body, and that, preferably the pipe conductor or the sleeve conductor and the drill pipe body or the sleeve body have an essentially identical thermal expansion behavior, the structure of the drill pipe according to the invention is described below.
  • the described features can be correspondingly transferred to the sleeve according to the invention.
  • the sleeve is designed in a manner corresponding to the drill pipe. It is essential that an inner and / or outer tube is provided as the pipe conductor or sleeve conductor, via which the energy and data transmission takes place from above to the bottom of the borehole and back.
  • the pipe conductor or the socket conductor and the drill pipe body or the socket body have essentially the same thermal expansion behavior.
  • the thermal linear expansion behavior defined by the coefficient of linear expansion ⁇ , indicates by how much the length of an object increases when the temperature of the object increases by 1 ° C. If the pipe conductor has a comparable or even identical linear expansion behavior to the drill pipe body, there is no axial displacement of the pipe conductor relative to the drill pipe body even with large drilling depths. The disturbance or interruption of the energy and data transmission due to different lengths of pipe and drill pipe body must therefore not be feared.
  • the pipe conductor and the drill pipe body can, for the sake of simplicity, be produced from the same material, preferably from steel. In principle, however, it is also possible to use an alloy as the material for the pipeline, which has a corresponding linear expansion behavior.
  • the pipe conductor can be connected to the drill pipe body in a material-locking and / or non-positive manner. For example, it is possible to glue the pipe conductor to the drill pipe body.
  • a slotted sleeve is inserted into the drill pipe body as a pipe conductor, it being necessary to press the jacket surface of the sleeve accordingly in order to enable the sleeve to be inserted into the drill pipe body.
  • the restoring forces in the casing surface of the sleeve lead to a non-positive connection between the sleeve and the drill pipe body. It is of course equally possible to sniff the drill pipe body onto the sleeve.
  • a gap of 0.5 cm to 2.5 cm is preferably provided between the pipe conductor and the drill pipe, in particular a gap of 1.5 cm.
  • the gap can be filled with a casting compound, in particular a plastic, preferably with epoxy resin.
  • the potting compound firstly creates a material bond between the pipe conductor and the drill pipe and also serves as an insulating layer.
  • the inner circumferential surface of the pipe is preferably coated with a further insulating layer. If, on the other hand, it is provided that the pipeline encases the drill pipe body, the outside of the pipeline can be coated with an electrical non-conductor.
  • the wall thickness of the pipe is preferably determined depending on the maximum drilling depth. Up to a drilling depth of 2000 m, a wall thickness of the pipe from 0.5 mm to 1.5 mm, in particular from 0.7 mm to 1.2 mm, can preferably be provided. If, on the other hand, drilling is to be carried out to a depth of 5000 m, a pipeline with a wall thickness of 4 mm to 8 mm, preferably 5 mm to 6 mm, can be used.
  • the above-described features of the pipe conductor or socket conductor according to the invention allow the energy transmission to take place at low or low voltage of preferably 42 volts.
  • the conductor is provided inside the drill string, it makes sense to connect the pipe contact to the end face of the drill pipe body provided.
  • the end face represents a shoulder to the inside of the pipe.
  • the socket contact connection is provided on an end shoulder to the inside of the socket.
  • the pipe contact connection should be arranged on an insulation ring resting on the end face, while the socket contact connection should be arranged on an insulation ring resting on the shoulder.
  • the insulation ring which should be made of an elastic material, should have an annular groove for receiving the respective contact connection, the The ring groove should be deeper than the height of the contact connection. In this way it is ensured that when the drill pipes are screwed to the sleeves there is sufficient sealing on the mutually facing surfaces of the insulation rings by pressing these rings together while simultaneously contacting the contact connections.
  • At least one circumferential seal should be provided in the region of the pin of the drill pipe body.
  • the seal is preferably located on the step from the tube outside to the pin and / or at the transition from the step to the pin.
  • One or more seals can also be provided in the region of the journal itself. On the sleeve, it makes sense to provide at least one circumferential seal on the outer end face of the sleeve body.
  • the invention it is possible in the invention to provide not only one conductor but a plurality of conductors in the drill pipe. Since the diameter of the conductors cannot be chosen to be as large as possible, in order not to accept excessive weakening of the drill pipe due to deep grooves on the inside of the drill pipe, the number of conductors, which anyway have a small diameter, is dependent on the Requires electrical energy to operate the respective downhole measuring or analyzing device.
  • 1 is a schematic view of a drill pipe placed in a borehole
  • FIG. 2 is a schematic view of the pipe end of a drill pipe
  • FIG. 3 is a schematic view of part of a sleeve
  • 6 is a detailed view of a sleeve
  • 7 shows a schematic partial view of a drill pipe screwed into a socket with a pipe conductor or socket conductor fixed in a groove
  • FIG. 8 shows a schematic partial view of a drill pipe with a tubular pipeline.
  • a drilling device 1 is shown schematically.
  • the drilling device 1 has a drilling head 2 arranged above ground and a drill pipe 3, which is located in a borehole 4 in the drilling state.
  • a chisel unit 5 At the lower end of the drill pipe 3 there is a chisel unit 5.
  • a measuring device 6 directly above the chisel unit 5, which is connected via a conductor 7 to an evaluation device 8 located above ground.
  • the measuring device 6 makes it possible to record measured values during drilling, which can then be evaluated directly via the evaluation device 8.
  • the drill pipe 3 itself is composed of a large number of alternately arranged drill pipes 10 and sleeves 11.
  • Drill pipes 10 of the type in question can have a length of up to 10 m and longer, while drill pipes 3 for deep drilling can have a length of several thousand meters.
  • FIG. 2 A part of a drill pipe 10 is shown in FIG. 2 and in a detailed representation according to FIG. 4.
  • the drill pipe 10 has a drill pipe body 12 made of electrically conductive material. It is now provided that at least one electrical pipe conductor 7a is passed through the drill pipe body 12 and is connected at the end, at both ends, to a pipe contact connection 13 provided on the drill pipe body 12, the pipe conductor 7a and the pipe contact connection 13 being opposite the pipe pipe body 12 are electrically isolated.
  • the pipe conductor 7a is fixed on the inside 14 of the pipe.
  • a longitudinal groove 15 for the pipe conductor 7a is provided on the inside of the pipe 14.
  • the groove 15 is designed in the form of a dovetail.
  • the groove 15 runs parallel to the central axis of the drill pipe 10. In the present case, the depth of the groove 15 is greater than the outer diameter of the pipe head 7a.
  • the pipe conductor 7a is held in the groove 15 via an insulation 16.
  • the insulation 16 also has an electrically insulating function.
  • the pipe conductor 7a has a conductor insulation 17 which extends over the entire length of the pipe conductor 7a.
  • an electrical insulation layer 18 is evaporated over the entire surface of the inside of the pipe 14, which also covers the groove 15 and thus the pipe conductor 7a. The insulation layer 18 is applied to the entire inside of the pipe 14.
  • the pipe contact connection 13 is provided on the end face 19 of the pipe end of the drill pipe 10. It is understood that a corresponding pipe contact connection 13 is provided at both ends of the drill pipe body 12, even if this is not discussed in more detail below.
  • the pipe contact connection 13 is circumferential and has the shape of a contact ring. Otherwise, the pipe contact connection 13 is arranged on an insulation ring 20 resting on the end face 19.
  • the insulation ring 20, which consists of an elastic material, has an annular groove 21 for receiving the pipe contact connection 13.
  • the annular groove 21 is deeper than the height of the pipe contact connection 13.
  • the pipe contact connection 13 is spring-loaded in the direction away from the end face 19, namely in the direction of the sleeve 11 to be connected to the drill pipe 10.
  • step 24 At both pipe ends of the drill pipe 10 there is a pin 22 on which an external thread 23 is provided. Between the pin 22 with the external thread 23 there is a step 24, which at its end merges into the tube outside 25. At the transition from step 24 to external thread 23 there is a circumferential seal 26, which in the present case is an O-ring. Instead of the seal 26 or in addition to this, an annular seal can be arranged on the step 24.
  • FIG. 3 A part of a sleeve 11 is shown in FIG. 3 and in the detailed representation according to FIG. 6.
  • the sleeve 11 has a sleeve body 27 made of electrically conductive material.
  • An electrical sleeve conductor 7b is passed through the sleeve body 27 and ends, at both ends of the sleeve gro ers 27, is connected to sleeve contact connections 28, even if this is not shown in detail.
  • the socket conductor 7b and the socket contact connections 28 are electrically insulated from the socket body 27.
  • the socket conductor 7b is fixed on the inside of the socket 29.
  • a longitudinal groove 30 is provided on the inner side 29 of the sleeve body 27.
  • the groove 30 is formed in the same way as the groove 15. Otherwise, the groove 30 runs parallel to the central axis of the sleeve 11. It is not shown that the sleeve conductor 7b is cast into the groove 30 via insulation and, moreover, from a conductor insulation is encased.
  • an electrical insulation layer 31, which also covers the socket conductor 7b, is vapor-deposited on the inside of the socket 29 as well as on the inside of the pipe 14.
  • the socket contact connection 28 is provided on an end shoulder 32.
  • the shoulder 32 is located between the internal thread 33 and the inside of the socket 29.
  • the socket contact connection 28 is formed all the way round and is arranged on an insulation ring 20 resting on the shoulder 32.
  • the type and structure of the insulation ring 20 corresponds to the insulation ring 20 provided on the drill pipe 10, that is to say it has an annular groove 21 for receiving the socket contact connection 28, the annular groove 21 being deeper than the height of the socket contact connection 28. Otherwise, the socket contact connection 28 is in the direction of the shoulder 32 spring loaded away.
  • the spring loading can be designed with respect to the contact feet 13, 28 in such a way that one or a plurality of springs, for example small helical compression springs, act on the respective underside of the contact connection.
  • spring tongues can be provided on the respective contact connection.
  • the spring tongues can in principle be directed inwards and / or outwards, spring tongues pointing outwards then projecting beyond the actual contact connection and being able to effect the electrical contact.
  • the drill pipes 10 and sleeves 11 described in the above-described manner in connection with the pipelines 7a and sleeve conductors 7b result in a two-pole energy and data transmission system via the drill pipe 3.
  • the one pole is formed by the drill pipe body, which is composed of the drill pipe bodies 12 and the sleeve bodies 27, while the other pole is formed by the conductor 7, which is composed of the pipe conductors 7a and the sleeve conductors 7b and the contact connections 13 and 28.
  • the system according to the invention also has the advantage that the drill pipe 3 and thus the two poles can be extended as desired, since screwing a drill pipe 10 to a sleeve 11 enables the electrical connection via the contact connections 13, 28 on the one hand and the material the drill pipe body 12 and the sleeve body 27 on the other hand results.
  • the energy is fed in or data is taken from the conductor 7 via a slip ring collector (not shown), which is provided on the first drill pipe 10.
  • the slip ring collector is connected to the pipe conductor 7a and insulated from the drill pipe body 12.
  • the slip ring collector is in turn connected to the evaluation device 8, while the drill rod body forms the ground connection.
  • FIG. 8 shows a schematic partial view of a drill pipe 10 with a tubular pipe conductor 7a.
  • the pipe conductor 7a is glued to the inside of the pipe 14 over its entire surface via an insulating layer 37.
  • the insulation layer 37 can be epoxy resin, for example, which ensures electrical insulation of the pipe 7a from the pipe 10 and with which the gap between the pipe inside 14 and the pipe 7a is cast.
  • a further insulating layer 38 is provided on the inner circumferential surface of the pipe 7a, which is preferably coated with an electrically non-conductive material of low surface roughness.
  • a low-friction coating of the pipe 7a on the inside contributes to a low flow resistance when flowing through the drill pipe 10 during the conveying process or during the flushing process.
  • a drill pipe 10 with a tubular pipe conductor 7a can correspond to the design of the socket 11 with a tubular socket conductor 7b.
  • the contact connections of drill pipe 10 and Socket 11 essentially correspond to the above-described embodiments when the pipe conductor 7a or the socket conductor 7b is respectively guided in a longitudinal groove 15, 30, electrical insulation of the respective contact connection with respect to the drill body 10 or the socket 11 having to be ensured.
  • the pipe conductor 7a and the socket conductor 7b can have a collar at the end in order to produce a line contact in a simple manner.

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)
  • Earth Drilling (AREA)
  • Cable Accessories (AREA)

Abstract

L'invention concerne une tige de forage (3) destinée à des forages profonds et comprenant une pluralité de tubes de forage (10) présentant des corps de tube de forage (12) en matériau électroconducteur, ainsi qu'une pluralité de manchons (11) présentant des corps de manchon (27) en matériau électroconducteur. L'invention vise à obtenir, avec rapidité et précision, des informations provenant de l'emplacement de forage. A cet effet, un pôle électrique est formé par le corps de tige de forage constitué des corps de tube de forage (12) et des corps de manchon (27) et l'autre pôle électrique est formé par au moins un conducteur (7) isolé électriquement par rapport au corps de tige de forage et placé à l'intérieur du corps de tige de forage, de façon à rendre possible un transfert aussi bien d'énergie électrique que de données.
EP04804462A 2004-01-22 2004-12-31 Tige de forage pour des forages profonds Withdrawn EP1706577A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004003479A DE102004003479B4 (de) 2004-01-22 2004-01-22 Bohrgestänge für Tiefbohrungen
PCT/EP2004/014878 WO2005071211A2 (fr) 2004-01-22 2004-12-31 Tige de forage pour des forages profonds

Publications (1)

Publication Number Publication Date
EP1706577A2 true EP1706577A2 (fr) 2006-10-04

Family

ID=34800945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04804462A Withdrawn EP1706577A2 (fr) 2004-01-22 2004-12-31 Tige de forage pour des forages profonds

Country Status (17)

Country Link
US (1) US20070102197A1 (fr)
EP (1) EP1706577A2 (fr)
JP (1) JP2007518906A (fr)
CN (1) CN1906374A (fr)
AP (1) AP2006003681A0 (fr)
AU (1) AU2004314264A1 (fr)
BR (1) BRPI0418434A (fr)
CA (1) CA2544757A1 (fr)
DE (1) DE102004003479B4 (fr)
EA (1) EA200601341A1 (fr)
EC (1) ECSP066720A (fr)
MA (1) MA28278A1 (fr)
NO (1) NO20061990L (fr)
RS (1) RS20060420A (fr)
TN (1) TNSN06225A1 (fr)
WO (1) WO2005071211A2 (fr)
ZA (1) ZA200604615B (fr)

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Publication number Priority date Publication date Assignee Title
US20090101328A1 (en) 2004-09-28 2009-04-23 Advanced Composite Products & Technology, Inc. Composite drill pipe and method of forming same
US8264369B2 (en) * 2005-05-21 2012-09-11 Schlumberger Technology Corporation Intelligent electrical power distribution system
US20090151926A1 (en) * 2005-05-21 2009-06-18 Hall David R Inductive Power Coupler
US7504963B2 (en) * 2005-05-21 2009-03-17 Hall David R System and method for providing electrical power downhole
US20080012569A1 (en) * 2005-05-21 2008-01-17 Hall David R Downhole Coils
US7535377B2 (en) 2005-05-21 2009-05-19 Hall David R Wired tool string component
US7527105B2 (en) * 2006-11-14 2009-05-05 Hall David R Power and/or data connection in a downhole component
CA2719651C (fr) * 2008-06-10 2015-08-04 Halliburton Energy Services, Inc. Procede et systeme d'emission d'ondes electromagnetiques a partir d'un puits de forage
US8434571B2 (en) * 2008-06-23 2013-05-07 Halliburton Energy Services, Inc. Securement of lines to downhole well tools
US8033329B2 (en) * 2009-03-03 2011-10-11 Intelliserv, LLC. System and method for connecting wired drill pipe
IES20090407A2 (en) * 2009-05-26 2009-10-28 Espen Alhaug Method and system for transferring signals through a drill pipe system
EP2456948B1 (fr) * 2009-07-23 2017-10-25 Baker Hughes Incorporated Segment de conduit câblé et son procédé de fabrication
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
EP2495389B1 (fr) 2011-03-04 2014-05-07 BAUER Maschinen GmbH Tiges de forage
US10036234B2 (en) * 2012-06-08 2018-07-31 Schlumberger Technology Corporation Lateral wellbore completion apparatus and method
US10342958B2 (en) 2017-06-30 2019-07-09 Abbott Cardiovascular Systems Inc. System and method for correcting valve regurgitation

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DE2744829C2 (de) * 1977-10-05 1986-04-24 Shell Internationale Research Maatschappij B.V., Den Haag Rohrlänge für Arbeiten in Tiefbohrungen und Verfahren zu ihrer Herstellung
GB1571677A (en) * 1978-04-07 1980-07-16 Shell Int Research Pipe section for use in a borehole
US6392317B1 (en) * 2000-08-22 2002-05-21 David R. Hall Annular wire harness for use in drill pipe

Non-Patent Citations (1)

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Title
See references of WO2005071211A3 *

Also Published As

Publication number Publication date
MA28278A1 (fr) 2006-11-01
NO20061990L (no) 2006-08-21
ECSP066720A (es) 2006-12-20
AP2006003681A0 (en) 2006-08-31
CN1906374A (zh) 2007-01-31
ZA200604615B (en) 2007-11-28
EA200601341A1 (ru) 2007-06-29
US20070102197A1 (en) 2007-05-10
JP2007518906A (ja) 2007-07-12
WO2005071211A3 (fr) 2005-11-10
RS20060420A (en) 2008-04-04
TNSN06225A1 (en) 2007-12-03
BRPI0418434A (pt) 2007-05-22
AU2004314264A1 (en) 2005-08-04
CA2544757A1 (fr) 2005-08-04
DE102004003479A1 (de) 2005-08-18
WO2005071211A2 (fr) 2005-08-04
DE102004003479B4 (de) 2006-07-20

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