EP1076155A1 - Système de codage pour utilisation dans un trou de forage - Google Patents

Système de codage pour utilisation dans un trou de forage Download PDF

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Publication number
EP1076155A1
EP1076155A1 EP99306279A EP99306279A EP1076155A1 EP 1076155 A1 EP1076155 A1 EP 1076155A1 EP 99306279 A EP99306279 A EP 99306279A EP 99306279 A EP99306279 A EP 99306279A EP 1076155 A1 EP1076155 A1 EP 1076155A1
Authority
EP
European Patent Office
Prior art keywords
wellbore
coding system
transmitter
field
conduit
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Withdrawn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
EP99306279A
Other languages
German (de)
English (en)
Inventor
Wilhelmus Hubertus Paulus Maria Heijnen
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Priority to EP99306279A priority Critical patent/EP1076155A1/fr
Publication of EP1076155A1 publication Critical patent/EP1076155A1/fr
Withdrawn legal-status Critical Current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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
    • E21B43/305—Specific pattern of wells, e.g. optimising the spacing of wells comprising at least one inclined or horizontal well
    • 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
    • E21B47/02—Determining slope or direction
    • E21B47/024—Determining slope or direction of devices in the borehole
    • 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
    • E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
    • E21B47/092—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes by detecting magnetic anomalies

Definitions

  • the present invention relates to a coding system for use in a wellbore formed in an earth formation. It is common practice to lower wellbore tools or equipment through a conduit extending into the wellbore for a variety of purposes, the conduit being, for example a wellbore casing extending from surface to a reservoir zone of the earth formation.
  • the tools or equipment generally are to be lowered to a selected depth at which a dedicated function is to performed, e.g. drilling of a branch borehole, setting of packers, etc.
  • a dedicated function e.g. drilling of a branch borehole, setting of packers, etc.
  • selective access to the branch wellbores is generally required, implying that identification of the position of the connections of the branch wellbores to the main wellbore is required.
  • One way of identifying a selected wellbore depth is to provide dimensional changes to the casing at the selected depth, for example a section of reduced diameter through which a specific wellbore component cannot pass.
  • Such diameter changes reduce the wellbore diameter.
  • the change of diameter at each branch connection results in a wellbore having a lower part of unacceptably diameter reduction.
  • a coding system for use in a wellbore formed in an earth formation, comprising a tubular conduit extending in the wellbore and being provided with at least one transmitter array, each transmitter array being arranged at a selected wellbore location and including at least one transmitter arranged in a selected pattern representative for said location, each transmitter inducing a field selected from a magnetic field and an electromagnetic field into the interior of the conduit, a sensor suitable to be lowered through the conduit and to interact with each field, and means for generating a signal representative of the interaction of the sensor with each field.
  • the transmitters are arranged in a pattern unique to the location of the array, therefore the induced fields form a pattern of fields also unique to the location. Since the sensor interacts with each field, the interaction of the sensor with the pattern of fields, and the produced signal, also are unique to the location so that the array pattern can be identified. The depth location is then inferred from the unique relationship between the array pattern and the depth location.
  • the wellbore is a multilateral wellbore including a main wellbore and at least one branch wellbore extending from a branch point of the main wellbore, said transmitter array being located substantially at said branch point.
  • the depth location of the branch points can thereby be inferred without the need for dimensional changes at the branch points.
  • the casing section 1 is made of non-magnetic metal, for example .
  • the outer surface of the casing section 1 is provided with four recesses 5, 7, 9, 11 arranged at substantially equal depth and at selected mutual angular intervals ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 relative to the longitudinal axis 12 of the casing 3.
  • the intervals ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 are uniquely related to said depth.
  • the recesses 5, 7, 9, 11 are provided with an array of transmitters in the form of permanent magnets, 14, 16, 18, 20 locked into the recesses by locking member 22, 24, 26, 28.
  • magnet 14 is arranged in recess 5 and locked by locking member 22
  • magnet 16 is arranged in recess 7 and locked by locking member 24
  • magnet 18 is arranged in recess 9 and locked by locking member 26
  • magnet 20 is arranged in recess 11 and locked by locking member 28.
  • the magnets are arranged at mutual angular intervals ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 relative to the longitudinal axis 12.
  • the magnets 16, 18, 20 are not visible in the cross-section of Fig. 1, their position has been indicated in dotted lines for the purpose of clarity.
  • Each magnet 14, 16, 18, 20 induces a magnetic field (not shown) into the interior of the casing section 1.
  • a sensor tool 30 supported by wire line 32 from a control facility (not shown) at surface.
  • the tool 30 is provided with a plurality of electric circuits (not shown), each circuit including an electric relay 34 arranged to actuate a change in the circuit upon entering the magnetic field induced by one of the magnets 14, 16, 18, 20.
  • the relays are arranged at regular angular intervals along the outer circumference of the tool 30.
  • Each circuit is in electric contact with the control facility via an electric conductor (not shown) extending along the wireline 32.
  • the control facility is capable of receiving a signal from each circuit indicating said change of the circuit.
  • each magnet will be in close proximity of one of the relays 34.
  • four of the relays 34 enter the magnetic fields induced by the magnets, said four relays being located at mutual angular intervals ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 relative to the longitudinal axis (not shown) of the tool.
  • Each one of the four relays thereby actuates a change in the corresponding circuit, resulting in a corresponding signal being transmitted from the circuit through the electric conductor to the control facility at surface.
  • the depth of the tool 30 in the wellbore is then determined from the unique relationship between the angular intervals ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 and the depth of the magnets 14, 16, 18, 20 in the wellbore.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
EP99306279A 1999-08-09 1999-08-09 Système de codage pour utilisation dans un trou de forage Withdrawn EP1076155A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99306279A EP1076155A1 (fr) 1999-08-09 1999-08-09 Système de codage pour utilisation dans un trou de forage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99306279A EP1076155A1 (fr) 1999-08-09 1999-08-09 Système de codage pour utilisation dans un trou de forage

Publications (1)

Publication Number Publication Date
EP1076155A1 true EP1076155A1 (fr) 2001-02-14

Family

ID=8241567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99306279A Withdrawn EP1076155A1 (fr) 1999-08-09 1999-08-09 Système de codage pour utilisation dans un trou de forage

Country Status (1)

Country Link
EP (1) EP1076155A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2381545A (en) * 2001-11-05 2003-05-07 Schlumberger Holdings A method and system for operating a downhole tool utilising transponders
WO2014139985A1 (fr) * 2013-03-11 2014-09-18 Welltec A/S Composant de complétion avec détection de position
WO2015102621A1 (fr) * 2013-12-31 2015-07-09 Halliburton Energy Services, Inc. Détermination de positionnement magnétique dans un puits de forage
US10006269B2 (en) 2013-07-11 2018-06-26 Superior Energy Services, Llc EAP actuated valve

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105548A (en) * 1960-03-24 1963-10-01 Camco Inc Tubing nipple and selector tool
US3513912A (en) * 1967-08-03 1970-05-26 Gene T Boop Magnetic depth indexing means
US4121657A (en) * 1977-05-16 1978-10-24 Eastman Whipstock, Inc. Position indicator for downhole tool
US4244424A (en) * 1979-03-28 1981-01-13 Chromalloy American Corporation Magnetic casing depth marker
EP0301671A2 (fr) * 1987-07-30 1989-02-01 Shell Internationale Researchmaatschappij B.V. Procédé de magnétisation de tubes de puits
US5351755A (en) * 1993-08-02 1994-10-04 Texaco Inc. Method and apparatus for establish the orientation of tools in a cased borehole
US5394950A (en) * 1993-05-21 1995-03-07 Gardes; Robert A. Method of drilling multiple radial wells using multiple string downhole orientation
US5666050A (en) * 1995-11-20 1997-09-09 Pes, Inc. Downhole magnetic position sensor
US5720344A (en) * 1996-10-21 1998-02-24 Newman; Frederic M. Method of longitudinally splitting a pipe coupling within a wellbore

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105548A (en) * 1960-03-24 1963-10-01 Camco Inc Tubing nipple and selector tool
US3513912A (en) * 1967-08-03 1970-05-26 Gene T Boop Magnetic depth indexing means
US4121657A (en) * 1977-05-16 1978-10-24 Eastman Whipstock, Inc. Position indicator for downhole tool
US4244424A (en) * 1979-03-28 1981-01-13 Chromalloy American Corporation Magnetic casing depth marker
EP0301671A2 (fr) * 1987-07-30 1989-02-01 Shell Internationale Researchmaatschappij B.V. Procédé de magnétisation de tubes de puits
US5394950A (en) * 1993-05-21 1995-03-07 Gardes; Robert A. Method of drilling multiple radial wells using multiple string downhole orientation
US5351755A (en) * 1993-08-02 1994-10-04 Texaco Inc. Method and apparatus for establish the orientation of tools in a cased borehole
US5666050A (en) * 1995-11-20 1997-09-09 Pes, Inc. Downhole magnetic position sensor
US5720344A (en) * 1996-10-21 1998-02-24 Newman; Frederic M. Method of longitudinally splitting a pipe coupling within a wellbore

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7385523B2 (en) 2000-03-28 2008-06-10 Schlumberger Technology Corporation Apparatus and method for downhole well equipment and process management, identification, and operation
GB2381545A (en) * 2001-11-05 2003-05-07 Schlumberger Holdings A method and system for operating a downhole tool utilising transponders
GB2381545B (en) * 2001-11-05 2006-10-11 Schlumberger Holdings Apparatus and method for downhole well equipment and process management,identification and operation
WO2014139985A1 (fr) * 2013-03-11 2014-09-18 Welltec A/S Composant de complétion avec détection de position
CN105026683A (zh) * 2013-03-11 2015-11-04 韦尔泰克有限公司 具有位置检测装置的完井组件
US10006269B2 (en) 2013-07-11 2018-06-26 Superior Energy Services, Llc EAP actuated valve
WO2015102621A1 (fr) * 2013-12-31 2015-07-09 Halliburton Energy Services, Inc. Détermination de positionnement magnétique dans un puits de forage
GB2535394A (en) * 2013-12-31 2016-08-17 Halliburton Energy Services Inc Magnetic location determination in a wellbore
GB2535394B (en) * 2013-12-31 2017-07-12 Halliburton Energy Services Inc Magnetic location determination in a wellbore
US9920621B2 (en) 2013-12-31 2018-03-20 Halliburton Energy Services, Inc. Magnetic location determination in a wellbore
NO347888B1 (en) * 2013-12-31 2024-04-29 Halliburton Energy Services Inc Magnetic location determination in a wellbore, including magnetic systems and a magnetic method

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