[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CA2476370A1 - Electromagnetic gap sub assembly - Google Patents

Electromagnetic gap sub assembly Download PDF

Info

Publication number
CA2476370A1
CA2476370A1 CA002476370A CA2476370A CA2476370A1 CA 2476370 A1 CA2476370 A1 CA 2476370A1 CA 002476370 A CA002476370 A CA 002476370A CA 2476370 A CA2476370 A CA 2476370A CA 2476370 A1 CA2476370 A1 CA 2476370A1
Authority
CA
Canada
Prior art keywords
gap sub
sub
dielectric material
sub assembly
gap
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
CA002476370A
Other languages
French (fr)
Other versions
CA2476370C (en
Inventor
Tony Dopf
Derek Logan
Paul Camwell
Clemens L. Horst
Robert E. Smallwood
Michael Nero
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.)
Weatherford Technology Holdings LLC
Original Assignee
Individual
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
Priority claimed from US10/744,683 external-priority patent/US7093680B2/en
Application filed by Individual filed Critical Individual
Publication of CA2476370A1 publication Critical patent/CA2476370A1/en
Application granted granted Critical
Publication of CA2476370C publication Critical patent/CA2476370C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B47/00—Survey of boreholes or wells
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/02—Electrically insulating joints or couplings
    • F16L25/021—Electrically insulating joints or couplings for screw-threaded joints

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Earth Drilling (AREA)
  • Gasket Seals (AREA)

Abstract

A compact, robust, wear resistant, and high performance electrically insulating gap sub for use with borehole EM Telemetry is disclosed. In one embodiment, the gap sub may include an externally threaded mandrel separated from an internally threaded housing by a dielectric material. Additionally, some embodiments may include an external gap ring for separating the upper and lower electrical halves of the sub which offers structural support, acts as the primary external seal, and provides an abrasion resistant non-conductive length on the exterior. Some embodiments may include torsion bins to prevent the possible unscrewing of the dielectric filled threaded sections should the dielectric material become damaged or weakened.
CA002476370A 2003-07-31 2004-07-30 Electromagnetic gap sub assembly Expired - Lifetime CA2476370C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US49156903P 2003-07-31 2003-07-31
US60/491,569 2003-07-31
US10/744,683 2003-12-23
US10/744,683 US7093680B2 (en) 1995-06-12 2003-12-23 Subsurface signal transmitting apparatus

Publications (2)

Publication Number Publication Date
CA2476370A1 true CA2476370A1 (en) 2005-01-31
CA2476370C CA2476370C (en) 2009-06-09

Family

ID=32965826

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002476370A Expired - Lifetime CA2476370C (en) 2003-07-31 2004-07-30 Electromagnetic gap sub assembly

Country Status (2)

Country Link
CA (1) CA2476370C (en)
GB (1) GB2404401B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7573397B2 (en) 2006-04-21 2009-08-11 Mostar Directional Technologies Inc System and method for downhole telemetry
WO2014085936A1 (en) * 2012-12-07 2014-06-12 Evolution Engineering Inc. Method and apparatus for multi-channel downhole electromagnetic telemetry
US9803473B2 (en) 2015-10-23 2017-10-31 Schlumberger Technology Corporation Downhole electromagnetic telemetry receiver

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2034228A4 (en) * 2006-06-22 2011-03-30 Airbus Espana Sl Current-insulating system for fluid systems
EP1913230B1 (en) 2006-07-06 2011-04-27 Halliburton Energy Services, Inc. Tubular member connection
ATE513231T1 (en) 2007-01-26 2011-07-15 Prad Res & Dev Nv BOREHOLE TELEMETRY SYSTEM
WO2014127482A1 (en) * 2013-02-21 2014-08-28 Evolution Engineering Inc. Electromagnetic pulse downhole telemetry
CA2900100C (en) * 2013-03-01 2020-05-05 Aaron W. LOGAN Pinned electromagnetic telemetry gap sub assembly
WO2014201572A1 (en) 2013-06-21 2014-12-24 Evolution Engineering Inc. Methods and apparatus for generating electromagnetic telemetry signals
CA3193759A1 (en) 2014-05-08 2015-11-12 Evolution Engineering Inc. Jig for coupling or uncoupling drill string sections with detachable couplings and related methods
WO2015168804A1 (en) 2014-05-08 2015-11-12 Evolution Engineering Inc. Drill string sections with interchangeable couplings
CA2946170C (en) * 2014-05-08 2022-09-20 Evolution Engineering Inc. Gap assembly for em data telemetry
WO2015168806A1 (en) 2014-05-09 2015-11-12 Evolution Engineering Inc. Downhole electronics carrier
CN105927150A (en) * 2016-04-11 2016-09-07 白伟华 Measurement-while-drilling electric drill device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618912B1 (en) * 1987-07-30 1989-12-22 Alsthom DRILLING SYSTEM WITH ELECTROMAGNETIC TRANSMISSION OF INFORMATION FROM THE BOTTOM, AND INSULATING CONNECTION FOR THIS SYSTEM
CA2151525C (en) * 1995-06-12 2002-12-31 Marvin L. Holbert Subsurface signal transmitting apparatus
US6098727A (en) * 1998-03-05 2000-08-08 Halliburton Energy Services, Inc. Electrically insulating gap subassembly for downhole electromagnetic transmission
CA2232213C (en) * 1998-03-16 2004-09-28 Ryan Energy Technologies Inc. Subassembly electrical isolation connector for drill rod

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7573397B2 (en) 2006-04-21 2009-08-11 Mostar Directional Technologies Inc System and method for downhole telemetry
US8154420B2 (en) 2006-04-21 2012-04-10 Mostar Directional Technologies Inc. System and method for downhole telemetry
US8547245B2 (en) 2006-04-21 2013-10-01 Mostar Directional Technologies Inc. System and method for downhole telemetry
US8749399B2 (en) 2006-04-21 2014-06-10 Mostar Directional Technologies Inc. System and method for downhole telemetry
US9482085B2 (en) 2006-04-21 2016-11-01 Mostar Directionsl Technologies Inc. System and method for downhole telemetry
US9957795B2 (en) 2006-04-21 2018-05-01 Mostar Directional Technologies Inc. Dual telemetry receiver for a measurement while drilling (MWD) system
US9995135B2 (en) 2006-04-21 2018-06-12 Mostar Directional Technologies Inc. System and method for controlling a dual telemetry measurement while drilling (MWD) tool
US10450858B2 (en) 2006-04-21 2019-10-22 Mostar Directional Technologies Inc. Gap sub assembly for a downhole telemetry system
WO2014085936A1 (en) * 2012-12-07 2014-06-12 Evolution Engineering Inc. Method and apparatus for multi-channel downhole electromagnetic telemetry
US9771792B2 (en) 2012-12-07 2017-09-26 Evolution Engineering Inc. Method and apparatus for multi-channel downhole electromagnetic telemetry
US9803473B2 (en) 2015-10-23 2017-10-31 Schlumberger Technology Corporation Downhole electromagnetic telemetry receiver

Also Published As

Publication number Publication date
GB2404401A (en) 2005-02-02
GB2404401B (en) 2006-12-06
GB0417072D0 (en) 2004-09-01
CA2476370C (en) 2009-06-09

Similar Documents

Publication Publication Date Title
CA2476370A1 (en) Electromagnetic gap sub assembly
CA2508374A1 (en) Insulative gap sub assembly and methods
WO2006108272A3 (en) Metal/fullerene anode structure and application of same
US10619478B2 (en) Device for power transmission and signal transfer between stator and rotor of screw drilling tool
WO2005003726A3 (en) Hydrocyclone wear-detection sensor
WO2002025051A3 (en) Jar with electrical conductor
GB2421752B (en) Electromagnetic borehole telemetry system incorporating a conductive borehole tubular
MY133936A (en) Photolithographically-patterned variable capacitor structures and method of making
WO2006032060A3 (en) High voltage/high current fuse
TW353186B (en) Electrical connections to dielectric materials
WO2004017465A3 (en) Electrical connector
EP1993113A4 (en) Capacitor and method for fabricating the capacitor
WO2004040606A3 (en) Machanically operable electrical device
WO2003063201A3 (en) Compliant electrical contact
CN103366907A (en) High-voltage wall bushing with conductive inserts and method for producing the wall bushing
CN1066859C (en) Antenna
WO2004108426A3 (en) Valuable document comprising a security element and method for producing said valuable document
KR890010955A (en) Wave Protection Metallized Oilfield Capacitor Assembly
EA200601341A1 (en) DRILLING HOLE FOR DEEP WELLS
WO2006011981A3 (en) Electromagnetic shield assembly
CA2483320A1 (en) Device for generating electrical energy from a vibrating tool
WO2004052327A3 (en) Nanoparticulate redispersible zinc-oxide powder
EP1103988A3 (en) SEmi-capacitance graded bushing insulator of the type with insulating gas filling, such as SF6
GB2376968A (en) Wireless communication using well casing
EP1239562A3 (en) Gas filled switching electric discharge tube

Legal Events

Date Code Title Description
EEER Examination request