EP1225301A1 - Hohles Bohrgestänge zur Informationsübertragung - Google Patents

Hohles Bohrgestänge zur Informationsübertragung Download PDF

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Publication number
EP1225301A1
EP1225301A1 EP02290125A EP02290125A EP1225301A1 EP 1225301 A1 EP1225301 A1 EP 1225301A1 EP 02290125 A EP02290125 A EP 02290125A EP 02290125 A EP02290125 A EP 02290125A EP 1225301 A1 EP1225301 A1 EP 1225301A1
Authority
EP
European Patent Office
Prior art keywords
layer
rod
drill pipe
conductive
rods
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
EP02290125A
Other languages
English (en)
French (fr)
Other versions
EP1225301B1 (de
Inventor
Giovanni c/o Compagnie du Sol Aiello
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.)
Compagnie du Sol SARL
Original Assignee
Compagnie du Sol SARL
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 Compagnie du Sol SARL filed Critical Compagnie du Sol SARL
Publication of EP1225301A1 publication Critical patent/EP1225301A1/de
Application granted granted Critical
Publication of EP1225301B1 publication Critical patent/EP1225301B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency

Definitions

  • the subject of the present invention is a hollow drilling rod for the transmission of information and a drill string allowing the carrying out such transmission of information.
  • the invention relates to a rod drilling of the type used to make drill pipes for drill pipes used to drill wells in the ground, these wells being filled as and when measuring their drilling of a drilling mud, these rods allowing in addition to the transmission of information between the bottom of the well and the surface of the ground.
  • a drill string is shown formed by the rod 10a constituting the lower rod, the rod 10b constituting the upper rod and intermediate rods.
  • a drilling tool 12 is attached at the lower end of the rod 10a and includes measurement sensors 14.
  • the internal face 16 of the rods 10 is coated with a layer of material insulator 18 over the entire length of the drill string.
  • the train rods is of course arranged inside the well being drilled 20 which is filled with an electrically conductive drilling mud 22.
  • the insulating layer 16 constitutes a closed current loop consisting on the one hand of drilling mud 30 filling the inside of the rods 10 and on the other hand into the assembly constituted by the same wall of the rods 10 and by the mud 32 outside the rods 10.
  • a first object of the invention is to provide a drill pipe which allows the transmission of information via this rod whatever the electrical properties of the sludge used to make drilling and which avoids the abrasion phenomenon.
  • the conductive layer constitutes a kind of short circuit by compared to the mud contained in the rod. At the connection between the two rods, electrical continuity is ensured by the mud on contact conductive rings of the adjacent rods. The distance between the two rings are reduced, this is not a problem.
  • the layer conductive and the two conductive rings are electrically insulated from the wall of the rod by the insulating layer.
  • each ring is mechanically protected by the insulating layer which covers it. Only the internal face of each ring is subjected to the abrasive effect of the liquid circulating in the rod. However, these rings have a reduced length compared to the length of the rod and can be made with a resistant conductive material abrasion.
  • the drill pipe is characterized in that the length l of each of said conductive rings is between 0.8 and 2.2 D, D being the internal diameter of said rod.
  • said layer of insulating material also covers the internal faces of the connection sleeves less for their parts which are not in mutual recovery when a drill pipe is assembled with another drill pipe.
  • a second object of the invention is to provide a drill string drilling that allows the transmission of information at least between the lower end of the train and its upper end under conditions improved regardless of the electrical properties of the mud filling the drilling in progress.
  • FIG. 2 we will describe a preferred embodiment of the invention.
  • the female connection sleeve 60 of the rod T 1 and the male connection sleeve 62 of the rod T 2 as well as common parts of these two rods.
  • the male and female sleeves are constituted by frustoconical threads 64.
  • the internal face 66 of the rod T 2 and the internal face 68 of the rod T 1 are covered by an insulating layer 70.
  • This insulating layer is for example consisting of a layer of an insulating epoxy resin, the thickness of which is preferably less than 250 ⁇ m. More generally, the thickness of the insulating layer depends on the dielectric properties of the material used.
  • the insulating layer 70 is extended on the start 72 of the connection sleeve 60 and on the start 74 of the connection sleeve 62 of the rod T 2 . In this zone, the two connection sleeves define a recess 76.
  • an annular insulating seal 78 secured to the end 74 of the connection sleeve 62 is put in place. When the assembly of the two rods is completed, the seal 78 is compressed to ensure a seal.
  • a conductive layer 80 which extends over the internal face, over its entire length, of the layer insulating except for its ends close to the sleeves connection.
  • the conductive layer 80 is electrically connected to its ends corresponding to connection sleeves 60 and 62 at conductive annular rings such as 84 arranged in line with the connection sleeves. These rings 84 are isolated from the wall 52 of the rod by the insulating layer 70. On the current part of the layer conductive 80, a second insulating protective layer 86 is produced. Of course, the insulating layer 86 does not cover the rings conductive 84.
  • the electrical continuity between the conductive layers 80 at the level of the recess 76 between two consecutive rods is ensured via the rings 84 and the mud under conditions entirely acceptable by the mud contained in this recess whatever the properties of the mud due to the very short length of the recess. It is also understood that the series of conductive layers 80 and rings 84 is isolated from the walls 52 1 , 52 2 of the rods T 1 and T 2 . The walls 52 1 and 52 2 as well as the mud outside the rods constitute the return path of the current loop.
  • the conductive layer 80 can advantageously be consisting of a deposit of conductive epoxy resin whose thickness is also of the order of 250 ⁇ m.
  • the conductive layer 80 can also be produced from the next way.
  • the conductive layer 80 is interrupted at its ends to allow the establishment of the rings 84 which are electrically connected to layer 80, for example by welding.
  • the outer face of the rings 84 is covered with a insulating layer extending the insulating layer 70.
  • the rings 84 are made with a material which has good electrical conductivity for electrical coupling with the mud and good abrasion resistance.
  • rings 84 can be made of brass with a surface treatment, by example, by nitriding to increase the surface hardness of the Ring.
  • the length of the ring 80 along the axis XX 'of the rod is between 0.8 and 2.2 D, D being the internal diameter of the rod.
  • D being the internal diameter of the rod.
  • the internal diameter D of the rods can be of the order of 2.5 to 5 cm.
  • the length l of the ring is therefore of the order of 2.5 cm to 11 cm, which which is very small compared to the total length of the rod which is in the range of 9 to 10 meters.
  • the particular realization of the rings 84 does not therefore raises no particular problem given the reduced length of them.
  • a drilling in progress 90 in which there is the drilling mud 92.
  • the drill string constituted by the lower rod T i , the upper rod T s and the intermediate rods T.
  • the upper rod T s cooperates with a drilling head 94 which allows the rotation of the drill string and the progressive descent of the latter in the borehole 90.
  • a standard type drilling tool 96 is mounted on the lower rod T i .
  • This drilling tool is equipped with measurement sensors 98.
  • the internal face 100 of the rods T is successively covered with an insulating layer 102, with a conductive layer 104 provided with its end rings.
  • a first electromagnetic coupling coil 106 is mounted inside the lower rod T i near its lower end. This coil 106 is electrically connected by conductors 108 to the sensors 98 and behaves like a transmitting and possibly receiving coil. Inside the upper rod T s , a second electromagnetic coupling coil 110 is mounted. This coil 110 is maintained below the level of the mud 92 in the borehole. This coil is receiver and possibly transmitter.
  • all of the rods with their conductive and insulating layers defines a closed current loop a first branch of which is formed by the conductive layers 104 and the mud contained inside the stems and of which the second branch is formed by the wall of the rods itself and the mud to the outside of the drill string.
  • These two branches of the current loop being connected by the drilling tool 96 at its lower end and by suitable means at its upper end.
  • the coil lower 106 receives sensors 98, representative electrical signals of the measurements made by the sensors 98. These alternating signals induce a current in the closed current loop described above.
  • This alternating current creates in the second coil 110 a current alternative representative of the measurement information delivered by the sensors 98, the voltage created in the coil is transmitted to a set processing 112 via the electrical conductors 114 and a collector rotating at the level of the drilling head 94.
EP02290125A 2001-01-22 2002-01-18 Hohles Bohrgestänge zur Informationsübertragung Expired - Lifetime EP1225301B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0100798 2001-01-22
FR0100798A FR2819851B1 (fr) 2001-01-22 2001-01-22 Tige creuse de forage pour la transmission d'informations

Publications (2)

Publication Number Publication Date
EP1225301A1 true EP1225301A1 (de) 2002-07-24
EP1225301B1 EP1225301B1 (de) 2006-03-29

Family

ID=8859072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02290125A Expired - Lifetime EP1225301B1 (de) 2001-01-22 2002-01-18 Hohles Bohrgestänge zur Informationsübertragung

Country Status (6)

Country Link
US (1) US6952170B2 (de)
EP (1) EP1225301B1 (de)
AT (1) ATE321932T1 (de)
DE (1) DE60210235D1 (de)
FR (1) FR2819851B1 (de)
HK (1) HK1050234A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1434063A3 (de) * 2002-12-23 2007-01-24 Halliburton Energy Services, Inc. Verfahren und System zur Messsignalübertragung für Bohrgestänge
WO2011128068A2 (de) 2010-04-12 2011-10-20 Universität Siegen Kommunikationssystem zur übertragung von informationen über bohrgestänge

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060151179A1 (en) * 2002-10-10 2006-07-13 Varco I/P, Inc. Apparatus and method for transmitting a signal in a wellbore
GB0227206D0 (en) * 2002-11-21 2002-12-24 Qinetiq Ltd Electrical transmission system
US7320370B2 (en) 2003-09-17 2008-01-22 Schlumberger Technology Corporation Automatic downlink system
CA2545377C (en) * 2006-05-01 2011-06-14 Halliburton Energy Services, Inc. Downhole motor with a continuous conductive path
FR2965602B1 (fr) * 2010-10-04 2013-08-16 Electronique Ind De L Ouest Tronico Tube destine a transporter des substances et assemblage de tubes correspondant
CN102454367A (zh) * 2010-10-19 2012-05-16 中国石油化工集团公司 动力及信号传输钻杆
WO2012082748A2 (en) * 2010-12-14 2012-06-21 Halliburton Energy Services, Inc. Data transmission in drilling operation environments
WO2014182293A1 (en) 2013-05-08 2014-11-13 Halliburton Energy Services, Inc. Insulated conductor for downhole drilling
US10240435B2 (en) 2013-05-08 2019-03-26 Halliburton Energy Services, Inc. Electrical generator and electric motor for downhole drilling equipment
US10584534B2 (en) * 2015-06-03 2020-03-10 Halliburton Energy Services, Inc. Drilling tool with near-bit electronics
US10125604B2 (en) * 2015-10-27 2018-11-13 Baker Hughes, A Ge Company, Llc Downhole zonal isolation detection system having conductor and method
US10669840B2 (en) * 2015-10-27 2020-06-02 Baker Hughes, A Ge Company, Llc Downhole system having tubular with signal conductor and method
CN112065291A (zh) * 2020-09-01 2020-12-11 中国海洋石油集团有限公司 导电钻杆

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012092A (en) * 1976-03-29 1977-03-15 Godbey Josiah J Electrical two-way transmission system for tubular fluid conductors and method of construction
US4684946A (en) * 1983-05-06 1987-08-04 Geoservices Device for transmitting to the surface the signal from a transmitter located at a great depth
US4899834A (en) * 1986-01-24 1990-02-13 Parker Kinetic Designs, Inc. Electromagnetic drilling apparatus
FR2777594A1 (fr) * 1998-04-17 1999-10-22 Sol Comp Du Installation de transmission d'informations dans un puits de forage
EP0964134A2 (de) * 1998-06-12 1999-12-15 Schlumberger Technology B.V. Leistungs- und Signalübertragung von einer isolierten Leitung für Dauerbohrloch-anlagen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518609A (en) * 1968-10-28 1970-06-30 Shell Oil Co Telemetry drill pipe with ring-control electrode means
US3866678A (en) * 1973-03-15 1975-02-18 Texas Dynamatics Apparatus for employing a portion of an electrically conductive fluid flowing in a pipeline as an electrical conductor
ZA823430B (en) * 1981-05-22 1983-03-30 Coal Industry Patents Ltd Drill pipe sections
JP2006504011A (ja) * 2002-10-23 2006-02-02 バーコ アイ／ピー，インコーポレイティド 内面にコーティングされた電気的経路を有するドリルパイプ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012092A (en) * 1976-03-29 1977-03-15 Godbey Josiah J Electrical two-way transmission system for tubular fluid conductors and method of construction
US4684946A (en) * 1983-05-06 1987-08-04 Geoservices Device for transmitting to the surface the signal from a transmitter located at a great depth
US4899834A (en) * 1986-01-24 1990-02-13 Parker Kinetic Designs, Inc. Electromagnetic drilling apparatus
FR2777594A1 (fr) * 1998-04-17 1999-10-22 Sol Comp Du Installation de transmission d'informations dans un puits de forage
EP0964134A2 (de) * 1998-06-12 1999-12-15 Schlumberger Technology B.V. Leistungs- und Signalübertragung von einer isolierten Leitung für Dauerbohrloch-anlagen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1434063A3 (de) * 2002-12-23 2007-01-24 Halliburton Energy Services, Inc. Verfahren und System zur Messsignalübertragung für Bohrgestänge
WO2011128068A2 (de) 2010-04-12 2011-10-20 Universität Siegen Kommunikationssystem zur übertragung von informationen über bohrgestänge
DE102010047568A1 (de) 2010-04-12 2011-12-15 Peter Jantz Einrichtung zur Übertragung von Informationen über Bohrgestänge
US9982529B2 (en) 2010-04-12 2018-05-29 Universitaet Siegen Communication system for transmitting information via drilling rods

Also Published As

Publication number Publication date
FR2819851B1 (fr) 2003-08-15
US6952170B2 (en) 2005-10-04
HK1050234A1 (zh) 2003-06-13
DE60210235D1 (de) 2006-05-18
FR2819851A1 (fr) 2002-07-26
ATE321932T1 (de) 2006-04-15
EP1225301B1 (de) 2006-03-29
US20020113716A1 (en) 2002-08-22

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