US20060022786A1 - Armored flat cable signalling and instrument power acquisition - Google Patents

Armored flat cable signalling and instrument power acquisition Download PDF

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Publication number
US20060022786A1
US20060022786A1 US10/899,613 US89961304A US2006022786A1 US 20060022786 A1 US20060022786 A1 US 20060022786A1 US 89961304 A US89961304 A US 89961304A US 2006022786 A1 US2006022786 A1 US 2006022786A1
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US
United States
Prior art keywords
cable segment
cable
core
inductive coupling
phase power
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.)
Abandoned
Application number
US10/899,613
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English (en)
Inventor
James Layton
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
Priority to US10/899,613 priority Critical patent/US20060022786A1/en
Assigned to BAKER HUGHES INCORPORATED reassignment BAKER HUGHES INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LAYTON, JAMES EDWARD
Priority to GB0515453A priority patent/GB2416626B/en
Priority to CA2513998A priority patent/CA2513998C/fr
Publication of US20060022786A1 publication Critical patent/US20060022786A1/en
Priority to US11/958,138 priority patent/US8051912B2/en
Abandoned legal-status Critical Current

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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
    • 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
    • E21B17/0283—Electrical or electro-magnetic connections characterised by the coupling being contactless, e.g. inductive
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings

Definitions

  • the present invention is directed, in general, to borehole production signaling and power systems and, more specifically, to impressing signals on and drawing power from borehole production power cables without intrusive connection.
  • a three phase power cable transmits power downhole to the motor and pump.
  • various schemes have been proposed for transmitting data measurement and control signals over the three phase power cable, including transmission of such data measurement and control signals concurrently with the three phase power.
  • C-shaped, L-shaped or straight core(s) with winding(s) around at least a portion thereof are positioned proximate to one or both end conductors, outside the armor, with significantly overlapping the center conductor.
  • straight core(s) with winding(s) around at least a portion thereof are disposed on one or both sides of the cable, outside the armor, across all three conductors with the core oriented transverse to the cable conductors.
  • FIG. 1 depicts a borehole production system including downhole measurement and/or control units inductively coupled to a flat three phase power cable according to one embodiment of the present invention
  • FIGS. 2A through 2D are diagrams of configurations for inductive coupling of downhole signaling units to a flat three phase power cable according to various embodiments of the present invention.
  • FIG. 3 depicts positioning of an inductive coupling device relative to a flat portion of a power cable within production tubing according to one embodiment of the present invention.
  • FIGS. 1 through 3 discussed below, and the various embodiments used to describe the principles of the present invention in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the invention. Those skilled in the art will understand that the principles of the present invention may be implemented in any suitably arranged device.
  • FIG. 1 depicts a borehole production system including downhole measurement and/or control units inductively coupled to a three phase power cable according to one embodiment of the present invention.
  • Borehole production system 100 includes an electrical submersible pump and motor assembly 101 lowered into a borehole 102 using a production tubing string 103 .
  • a three-phase power cable 104 carries three-phase power into the borehole 102 to the motor within assembly 101 from a surface location.
  • a three-phase power source 105 such as a generator or a connection to a local power grid, is coupled to power cable 104 by a converter/inverter system 106 .
  • Converter/inverter system 106 is constructed and operates in a manner known in the art to operate and/or regulate the operating speed of the motor/pump assembly.
  • At least a portion of three phase power cable 104 is flat. In fact, generally only a portion of the three phase power cable 104 —the “motor lead” piece transmitting power around the pump within the production string—will be flat.
  • the conductors for each phase within any three phase power transmission cable, flat or round, are generally in relatively close proximity. In round cables, each conductor, as seen from a cross-section, is spaced an equal distance from the other two at the apex of an equilateral triangle. As a result, the variations in external magnetic fields produced by instantaneous currents (or the differential magnetic field resulting from individual currents) may not be of sufficient magnitude to draw power by inductive coupling.
  • three phase power cable 104 is flat.
  • the entire three phase power cable 104 may be a flat cable, connected to a system inductance balancer 107 of the type described in U.S. Pat. No. 6,566,769.
  • a number of data measurement or control signaling units 108 a - 108 n which may be transmitters, receivers, or transceivers (hereinafter collectively referred to as “signaling units”), are optionally positioned proximate to power cable 104 at various locations along the length of that cable.
  • Signaling units 108 a - 108 n may be located, for example, at the surface, at the wellhead (particularly for subsea wells), at or near a packer, at various intervals within the well, and/or at the top of the motor/pump assembly.
  • Signaling units 108 a - 108 n are constructed, disposed and oriented relative to the conductors of cable 104 , of flat segments of cable 104 , as described in further detail below. At a minimum, at least one signaling unit 108 n having such construction, disposition and orientation is positioned proximate to a motor lead segment of cable 104 or another flat portion of cable 104 .
  • a data logging and/or control surface system 109 is coupled to one or more conductors of power cable 104 , for receiving or transmitting signals to measurement and/or control units 108 a - 108 n .
  • Signaling units 108 a - 108 n may measure pressure, temperature, cut, flow rate, or other parameters, and/or may control valves or other downhole mechanical systems.
  • Signaling units 108 a - 108 n may be configured to communicate bi-directionally with surface system 109 , either alone (one at a time) or concurrently, and may transmit or receive signals over three phase cable 104 concurrently with the three phase power transmitted to drive motor/pump assembly 101 .
  • surface system 109 controls operation of the production system, including varying the speed of the motor, opening and closing valves, etc.
  • signaling units 108 a - 108 n are inductively coupled to the conductors of a flat segment within power cable 104 for the purposes of (a) transmitting or receiving signals over such conductors, and/or (b) drawing power from three phase power cable 104 as described in further detail below.
  • filters may be required within signaling units 108 a - 108 n and surface system 109 to filter the three phase power transmitted over power cable 104 concurrently with data measurement or control signals.
  • FIGS. 2A through 2D are diagrams of configurations for inductive coupling of a signaling unit to conductors for a flat three phase power cable segment according to various embodiments of the present invention.
  • at least one signaling unit 108 n is inductively coupled to the three phase cable 104 , physically accessing the magnetic field produced by current carried on the conductor to inductively receive power from three phase cable 104 , and impressing signals upon or detecting signals from three phase cable 104 by similar use of a magnetic field producing current(s) within the conductor(s).
  • Different configurations of the inductive coupling mechanism, and different positions relative to the conductors of the three phase power cable 104 are better suited to receiving power and signaling.
  • FIG. 2A is a diagram for the structure and orientation of an inductive coupling device 200 for inductively coupling signaling unit 108 n to a flat segment within three phase cable 104 for the purpose of drawing power from the three phase power transmitted on the cable 104 .
  • Flat cable 104 (or a flat segment within cable 104 ) includes conductors 201 - 203 aligned in a plane, with conductors 201 and 203 on the ends and conductor 202 in the center.
  • Each conductor 201 - 203 is surrounded by insulation 204 , with the three conductors 201 - 203 and the insulation surrounded by armor 205 .
  • a inductive coupling device 200 including a generally C-shaped core with a winding around at least a portion thereof is disposed around one of the end conductors 201 or 203 .
  • the core is preferable magnetic and/or has a high magnetic permeability.
  • the strength of the magnetic field created by three phase power transmitted on cable 104 shows greater magnitude or variance on end conductors 201 or 203 than on center conductor 202 , or on any conductors within a round three phase cable. This allows physical access to the magnetic field produced by the current on that end conductor—for instance, conductor 201 —with a significant separation from the influence of the current carried on the other conductors 202 and 203 . The separation of influence from the other conductors 202 - 203 intensifies the total magnetic field variations proximate to the conductor 201 and thus enhances the amount of power that is accessible.
  • the C-shape of the core is sized to substantially surround the conductor 202 or 203 , preferably without significantly overlapping center conductor 202 .
  • the winding may cover substantially all of the core or only a portion thereof.
  • Counterpart inductive coupling devices 200 within a given signaling device 108 n may be disposed around both end conductors 201 and 203 .
  • the electrical current produced by the inductive coupling device 200 may be rectified, transformed and/or changed in frequency by electronics (not shown) for use within other functional components in signaling unit 108 n.
  • FIGS. 2B and 2C are alternative configurations an inductive coupling device for inductively coupling signaling unit 108 n to a flat segment of three phase cable 104 for the purpose of drawing power from the three phase power transmitted on the cable 104 .
  • an L-shaped core and/or winding 206 as illustrated in FIG. 2B or a straight core and/or winding 207 as illustrated in FIG. 2C may be employed.
  • any configuration providing physical access to the magnetic field produced by current within an end conductor may be employed.
  • accessing only the magnetic field produced by current in one conductor is not feasible for a three conductor cable carrying three phase power, but that magnetic effects from other conductors become negligible the further the core is space from that conductor.
  • C-shaped and L-shaped cores may optionally be continuously curved to, for example, follow the exterior contour of the armor, rather than being formed from straight segments.
  • the terms “C-shaped” and “L-shaped” are intended generally to differentiate between a core disposed proximate to three or two orthogonal “sides”, respectively, of an end conductor (e.g., surrounding a periphery encompassing an angle of approximately either 270° or 180°), without strictly limiting acceptable geometric shapes.
  • the inductive device may be implemented by a semi-circular toroid.
  • a “straight” core may be implemented with different geometric shapes having a portion disposed proximate to only one “side” of an end conductor. In all case, the winding need not be around the portion of the core that is closest to the end conductor, but may be spaced apart from the end conductor.
  • FIG. 2D is a diagram of the structure and orientation of an inductive coupling device for inductively coupling signaling unit 108 n to a flat segment of three phase cable 104 for the purpose of impressing signals on and/or detecting signals from the flat cable 104 or a flat segment within cable 104 .
  • Inductive coupling device 208 includes a generally straight (e.g., cylindrical, or elongate with a square or rectangular cross-section) core with a winding around at least a portion thereof, and is disposed substantially parallel to the plane containing the conductors 201 - 203 , oriented transverse (across) the conductors 210 - 203 . As with the other inductive devices 200 , 206 and 207 , the winding need not be around the portion of the core closest to the conductors within the cable.
  • Data and/or control signals are preferably impressed on all three conductors, as a single transmission medium, by either surface system 109 or any of signaling units 108 a - 108 n .
  • the core is preferably sized to a length substantially equal to at least a distance across all conductors 201 - 203 .
  • the winding may cover substantially all of the core or only a portion thereof.
  • counterpart inductive coupling devices may be disposed on both sides of conductors 201 - 203 within a given signaling unit 108 n .
  • the electrical signal received from or driven through the inductive coupling device 208 may be filtered, transformed and/or amplified as necessary within signaling unit 108 n.
  • Each signaling unit 108 a - 108 n may include both inductive coupling device(s) 200 / 206 / 207 and inductive coupling device(s) 208 , appropriately connected to different portions of electronics (not shown) therein and disposed proximate to different flat segments of cable 104 .
  • both devices 200 / 206 / 207 and 208 are employed within a given unit 108 a - 108 n , the devices 200 / 206 / 207 and 208 should be sufficiently spaced to avoid interference.
  • each unit 108 a - 108 n may include a number of either device(s) 200 / 206 / 207 , device(s) 208 , or both, the respective devices of a given type (for drawing power or impressing/detecting signals) operating in parallel to increase the amount of power drawn or to improve signal impression or detection.
  • FIG. 3 depicts positioning of an inductive coupling device relative to a flat portion of a power cable along a production tubing string according to one embodiment of the present invention.
  • a pressure vessel 300 is secured to production tubing 301 by a clamp 302 .
  • a channel is provided for a segment of flat three phase power cable.
  • Inductive coupling devices 207 are positioned relative to the end conductors within flat portion of cable 104 as described above, held in position by brackets (not shown) and electrically connected by wiring (also not shown) to electronics on circuit board 303 within the vessel 300 .
  • the present invention allows effective coupling to a flat segment of a three phase power cable without piercing the cable armor and creating a point of potential failure.
  • Power may be drawn from the cable and signals transmitted by inductive coupling to the power cable, using coupling device configured to take advantage of the cable cycle inductance variation in the manner best suited to the desired goal of either drawing power or transmitting signals.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Geophysics And Detection Of Objects (AREA)
US10/899,613 2004-07-27 2004-07-27 Armored flat cable signalling and instrument power acquisition Abandoned US20060022786A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US10/899,613 US20060022786A1 (en) 2004-07-27 2004-07-27 Armored flat cable signalling and instrument power acquisition
GB0515453A GB2416626B (en) 2004-07-27 2005-07-27 Armored flat cable signalling and instrument power acquisition
CA2513998A CA2513998C (fr) 2004-07-27 2005-07-27 Obtention d'energie pour signalisation par cable plat arme et instrument de mesure associe
US11/958,138 US8051912B2 (en) 2004-07-27 2007-12-17 Armored flat cable signalling and instrument power acquisition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/899,613 US20060022786A1 (en) 2004-07-27 2004-07-27 Armored flat cable signalling and instrument power acquisition

Related Child Applications (1)

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US11/958,138 Continuation US8051912B2 (en) 2004-07-27 2007-12-17 Armored flat cable signalling and instrument power acquisition

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US20060022786A1 true US20060022786A1 (en) 2006-02-02

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US11/958,138 Expired - Fee Related US8051912B2 (en) 2004-07-27 2007-12-17 Armored flat cable signalling and instrument power acquisition

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US11/958,138 Expired - Fee Related US8051912B2 (en) 2004-07-27 2007-12-17 Armored flat cable signalling and instrument power acquisition

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CA (1) CA2513998C (fr)
GB (1) GB2416626B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2425697A (en) * 2005-04-28 2006-11-01 Manx Electricity Authority A cable having a core surrounded by a metallic sheath which is surrounded by armour disengaged in one position.
WO2008031025A2 (fr) * 2006-09-08 2008-03-13 Stackhouse, Inc. Système de guidage de positionnement de dispositif médical avec connectivité sans fil entre un dispositif non invasif et un dispositif invasif
US20080306892A1 (en) * 2007-06-11 2008-12-11 Alexander Crossley Multiphase flow meter for electrical submersible pumps using artificial neural networks
US20160314597A1 (en) * 2007-07-03 2016-10-27 Shoppertrak Rct Corporation System and process for detecting, tracking and counting human objects of interest
WO2021247762A1 (fr) * 2020-06-03 2021-12-09 Baker Hughes Oilfield Operations, Llc Procédé d'équilibrage de courant de moteur pour un système esp

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US9423524B2 (en) * 2010-04-07 2016-08-23 Baker Hughes Incorporated Oil-based mud imager with a line source
US8198752B2 (en) 2010-05-12 2012-06-12 General Electric Company Electrical coupling apparatus and method
US8441153B2 (en) 2010-06-22 2013-05-14 General Electric Company Contactless power transfer system
EP2415961A1 (fr) * 2010-08-03 2012-02-08 Vetco Gray Controls Limited Fourniture d'alimentation électrique à des dispositifs sous-marins
US20120235829A1 (en) * 2011-03-17 2012-09-20 Sarmad Adnan Systems and methods of oilfield equipment via inductive coupling
US8674642B2 (en) * 2011-03-28 2014-03-18 Baker Hughes Incorporated Partial discharge monitoring systems and methods
US9697951B2 (en) 2012-08-29 2017-07-04 General Electric Company Contactless power transfer system
US11105190B2 (en) * 2016-10-19 2021-08-31 Halliburton Energy Services, Inc. Multi-gauge communications over an ESP power bus
EP3803910A1 (fr) * 2018-05-24 2021-04-14 Prysmian S.p.A. Câble blindé pour transporter du courant alternatif à fils blindés magnétisés en permanence
US11328584B2 (en) 2018-05-29 2022-05-10 Halliburton Energy Services, Inc. Inductively coupled sensor and system for use thereof
US11811273B2 (en) 2018-06-01 2023-11-07 Franklin Electric Co., Inc. Motor protection device and method for protecting a motor
US10454267B1 (en) 2018-06-01 2019-10-22 Franklin Electric Co., Inc. Motor protection device and method for protecting a motor
EP3744981A1 (fr) * 2019-05-28 2020-12-02 Grundfos Holding A/S Ensemble de pompe submersible et procédé de fonctionnement de l'ensemble de pompe submersible
US11128278B2 (en) * 2019-11-13 2021-09-21 Extract Management Co., LLC Systems and methods for balancing unbalanced power cables
US11391096B2 (en) * 2019-12-20 2022-07-19 Halliburton Energy Services, Inc. Inductive coupling for electric power transfer to electric submersible motor
US11795937B2 (en) 2020-01-08 2023-10-24 Baker Hughes Oilfield Operations, Llc Torque monitoring of electrical submersible pump assembly

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US4370098A (en) * 1980-10-20 1983-01-25 Esco Manufacturing Company Method and apparatus for monitoring and controlling on line dynamic operating conditions
US6167965B1 (en) * 1995-08-30 2001-01-02 Baker Hughes Incorporated Electrical submersible pump and methods for enhanced utilization of electrical submersible pumps in the completion and production of wellbores
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US6798338B1 (en) * 1999-02-08 2004-09-28 Baker Hughes Incorporated RF communication with downhole equipment
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US1862613A (en) * 1931-07-08 1932-06-14 Yokogawa Electric Works Ltd Split core current transformer
US3702460A (en) * 1971-11-30 1972-11-07 John B Blose Communications system for electric power utility
US4370098A (en) * 1980-10-20 1983-01-25 Esco Manufacturing Company Method and apparatus for monitoring and controlling on line dynamic operating conditions
US6167965B1 (en) * 1995-08-30 2001-01-02 Baker Hughes Incorporated Electrical submersible pump and methods for enhanced utilization of electrical submersible pumps in the completion and production of wellbores
US6798338B1 (en) * 1999-02-08 2004-09-28 Baker Hughes Incorporated RF communication with downhole equipment
US20050164666A1 (en) * 2002-10-02 2005-07-28 Lang Jack A. Communication methods and apparatus
US20040135676A1 (en) * 2002-12-10 2004-07-15 Berkman William H. Power line communication system and method of operating the same

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2425697A (en) * 2005-04-28 2006-11-01 Manx Electricity Authority A cable having a core surrounded by a metallic sheath which is surrounded by armour disengaged in one position.
US20080289848A1 (en) * 2005-04-28 2008-11-27 Manx Electricity Authority Data Transmission
GB2425697B (en) * 2005-04-28 2008-12-10 Manx Electricity Authority Data transmission
US8035031B2 (en) 2005-04-28 2011-10-11 Manx Electricity Authority Data transmission
WO2008031025A2 (fr) * 2006-09-08 2008-03-13 Stackhouse, Inc. Système de guidage de positionnement de dispositif médical avec connectivité sans fil entre un dispositif non invasif et un dispositif invasif
WO2008031025A3 (fr) * 2006-09-08 2008-06-26 Viasys Holdings Inc Système de guidage de positionnement de dispositif médical avec connectivité sans fil entre un dispositif non invasif et un dispositif invasif
US20080306892A1 (en) * 2007-06-11 2008-12-11 Alexander Crossley Multiphase flow meter for electrical submersible pumps using artificial neural networks
US8082217B2 (en) 2007-06-11 2011-12-20 Baker Hughes Incorporated Multiphase flow meter for electrical submersible pumps using artificial neural networks
US20160314597A1 (en) * 2007-07-03 2016-10-27 Shoppertrak Rct Corporation System and process for detecting, tracking and counting human objects of interest
WO2021247762A1 (fr) * 2020-06-03 2021-12-09 Baker Hughes Oilfield Operations, Llc Procédé d'équilibrage de courant de moteur pour un système esp
WO2021248155A1 (fr) * 2020-06-03 2021-12-09 Baker Hughes Oilfield Operations Llc Procédé d'équilibrage de courant de moteur pour système esp
US11368119B2 (en) 2020-06-03 2022-06-21 Baker Hughes Oilfield Operations Llc Motor current balancing method for ESP system

Also Published As

Publication number Publication date
GB2416626B (en) 2007-08-08
US8051912B2 (en) 2011-11-08
CA2513998C (fr) 2013-11-26
GB2416626A (en) 2006-02-01
CA2513998A1 (fr) 2006-01-27
GB0515453D0 (en) 2005-08-31
US20080093922A1 (en) 2008-04-24

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Owner name: BAKER HUGHES INCORPORATED, TEXAS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LAYTON, JAMES EDWARD;REEL/FRAME:015630/0924

Effective date: 20040712

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION