EP2691797B1 - Systeme und verfahren zur ortung beim bohren - Google Patents

Systeme und verfahren zur ortung beim bohren Download PDF

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Publication number
EP2691797B1
EP2691797B1 EP11859018.1A EP11859018A EP2691797B1 EP 2691797 B1 EP2691797 B1 EP 2691797B1 EP 11859018 A EP11859018 A EP 11859018A EP 2691797 B1 EP2691797 B1 EP 2691797B1
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EP
European Patent Office
Prior art keywords
casing
magnetic
magnetic field
drillstring
source
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EP11859018.1A
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English (en)
French (fr)
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EP2691797A4 (de
EP2691797A1 (de
Inventor
Paul F. Rodney
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Halliburton Energy Services Inc
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Halliburton Energy Services Inc
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    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • 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
    • E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
    • E21B47/0228—Determining slope or direction of the borehole, e.g. using geomagnetism using electromagnetic energy or detectors therefor
    • 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

  • SAGD steam-assisted gravity drainage
  • U.S. Patent 6,257,334 steam-Assisted Gravity Drainage Heavy Oil Recovery Process.
  • SAGD uses a pair of vertically-spaced, horizontal wells less than 10 meters apart, and careful control of the spacing is important to the technique's effectiveness.
  • Other examples of directed drilling near an existing well include intersection for blowout control, multiple wells drilled from an offshore platform, and closely spaced wells for geothermal energy recovery.
  • the drill bit 14 is just one piece of a bottom-hole assembly that includes one or more drill collars (thick-walled steel pipe) to provide weight and rigidity to aid the drilling process.
  • drill collars include logging instruments to gather measurements of various drilling parameters such as position, orientation, weight-on-bit, borehole diameter, etc.
  • the tool orientation may be specified in terms of a tool face angle (rotational orientation), an inclination angle (the slope), and compass direction, each of which can be derived from measurements by magnetometers, inclinometers, and/or accelerometers, though other sensor types such as gyroscopes may alternatively be used.
  • the tool includes a 3-axis fluxgate magnetometer and a 3-axis accelerometer.
  • Procedure 800 begins in block 802 with an estimation of the well casing trajectory. As this estimate will be adapted, it can be based on logging measurements from the well, or it can be an arbitrary starting point (e.g., a vertical well at some distance from the borehole). Drilling commences in block 804, creating a borehole that enters into the proximity of the existing well casing. What constitutes "proximity” may vary based on the capabilities of the system, but it is expected to include a range of at least 10 meters.
  • Electromagnets or magnetic shields can alternatively be employed to implement time division multiplexing, where only one of multiple magnetic field sources is active (uncovered) at a time.
  • the magnetic field of the source must be expressed in the x, y, z coordinate system defined by these equations.
  • the dipole moment is orthogonal to the drill pipe (assumed vertical for simplicity - for a commercial algorithm, this will need to be modified, but for a scoping analysis, no generality is lost with this assumption). It is further assumed that the moment of the dipole makes an angle ⁇ with rexpect to the x-axis.
  • the component of the field along the casing is calculated by expressing x, y and z in terms of the parameter t, the distance along the casing and projecting the field along the casing.
  • ⁇ r is the relative permeability of the casing.
  • the primed gradient can be commuted through the integral and does not operate on Bc.
  • the induced moment should go as the cube of the distance from the source. When this is induced as a net dipole moment, it will set up another dipole field that should fall off as an inverse cube. However, there are orientations when the dipole source magnet is directly facing the casing, at the same depth as the source magnet, the induced field looks more like a monopole field.

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  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Electromagnetism (AREA)
  • Geophysics And Detection Of Objects (AREA)

Claims (12)

  1. System zur Ortung beim Bohren, das Folgendes umfasst:
    einen Bohrstrang (8), der Folgendes aufweist:
    eine rotierende Magnetquelle (202, 402), die ein zeitveränderliches magnetisches Moment (206, 406) entlang eines bestehenden Futterrohrstrangs (19), der vom Bohrstrang entfernt ist, induziert, wobei die rotierende Magnetquelle (202, 402) mindestens einen Dipol mit einer nicht rechtwinkligen Neigung in Bezug auf eine Längsachse des Bohrstrangs (8) umfasst;
    eine Gruppe von axial beabstandeten Drei-Achsen-Magnetometern (208, 209, 408), die ein magnetisches Feld (204, 404) aus dem induzierten magnetischen Moment (206, 406) erkennen;
    und
    einen Sensor, der ein Signal liefert, das eine Rotationsorientierung der rotierenden Magnetquelle (202, 402) angibt; und
    einen Prozessor, der einen relativen Abstand und eine relative Richtung des Futterrohrstrangs (19) aus Messungen durch den Sensor und die Gruppe axial beabstandeter Drei-Achsen-Magnetometer (208, 209, 408) ermittelt.
  2. System nach Anspruch 1, wobei der Sensor in einem Satz vorliegt, der aus Gyroskopen, Beschleunigungsmessern und optischen und akustischen Sensoren für Bohrlochwandveränderungen besteht.
  3. System nach Anspruch 1, weiter umfassend einen Steuermechanismus, der zumindest teilweise basierend auf dem Abstand und der Richtung gelenkt wird.
  4. System nach Anspruch 1, wobei die rotierende Magnetquelle (202, 402) einen Dauermagneten umfasst.
  5. System nach Anspruch 4, wobei die rotierende Magnetquelle (202, 402) eine Abschirmung aufweist, die ein ausgesendetes Feld moduliert.
  6. System nach Anspruch 1, wobei die rotierende Magnetquelle (202, 402) ein Elektromagnet ist oder mehrere Dipole umfasst.
  7. System nach einem der Ansprüche 2 bis 6, wobei mindestens ein Phasenregelkreis (306) verwendet wird, um das Signal-RauschVerhältnis eines magnetischen Signals zu verbessern, das vom Futterrohr (19) aus dem Magnetfeld (204, 404) verstreut wird.
  8. Verfahren zur Ortung beim Bohren, das Folgendes umfasst:
    Verwenden eines rotierenden Magneten (204, 404), um ein veränderliches zeitabhängiges magnetisches Moment (206, 406) entlang eines bestehenden Futterrohrstrangs (19), der vom Bohrstrang entfernt ist, zu induzieren, wobei der rotierende Magnet (202, 402) mindestens einen Dipol mit einer nicht rechtwinkligen Neigung in Bezug auf eine Längsachse eines Bohrstrangs (8) umfasst;
    Messen mit Hilfe einer Gruppe von axial beabstandeten Drei-Achsen-Magnetometern eines Magnetfeldes (204, 404) von dem veränderlichen magnetischen Moment (206, 406) entlang eines Wegs des Bohrstrangs zu einer aktuellen Position des Bohrstrangs;
    Erfassen durch einen Sensor am Bohrstrang einer Rotationsorientierung des rotierenden Magneten (204, 404); und Schätzen zumindest teilweise auf der Basis der Messungen des Magnetfelds (204,404) und der Messungen durch den Sensor eines Abstands und einer Richtung zum Futterrohrstrang (19) von der aktuellen Position des Bohrstrangs.
  9. Verfahren nach Anspruch 8, wobei das Schätzen das Filtern der Messungen des Magnetfelds (204, 404) basierend auf der Rotationsorientierung, um die Magnetfeldbeiträge von dem veränderlichen magnetischen Moment (206, 406) zu isolieren, umfasst.
  10. Verfahren nach einem der Ansprüche 8 oder 9, wobei das Schätzen das Verbessern des Signal-Rausch-Verhältnisses eines magnetischen Signals, das vom Futterrohr (19) aus dem magnetischen Feld (204, 404) verstreut wird, durch Verwenden mindestens eines Phasenregelkreises (306) umfasst.
  11. Verfahren nach einem der Ansprüche 8, 9 oder 10, wobei das Schätzen das Modellieren des Magnetfelds (204, 404), das von dem rotierenden Magneten (204, 404) ausgeht, das Ermitteln für jede Position entlang der Länge des Futterrohrs der Komponente des Magnetfelds (204, 404), die parallel zur Achse des Futterrohrs (19) liegt, das Integrieren der Magnetfelder (204, 404) entlang des Futterrohrs (19), um das geschätzte induzierte Magnetfeld (204, 404) an mindestens einem Beobachtungspunkt zu erhalten, und das Vergleichen der Messungen des Magnetfelds (204, 404) mit dem geschätzten induzierten Magnetfeld (204, 404) umfasst.
  12. Verfahren nach Anspruch 8, weiter umfassend das Steuern des Bohrstrangs basierend zumindest zum Teil auf dem Abstand und der Richtung.
EP11859018.1A 2011-03-31 2011-03-31 Systeme und verfahren zur ortung beim bohren Active EP2691797B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2011/030639 WO2012134468A1 (en) 2011-03-31 2011-03-31 Systems and methods for ranging while drilling

Publications (3)

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EP2691797A1 EP2691797A1 (de) 2014-02-05
EP2691797A4 EP2691797A4 (de) 2015-11-11
EP2691797B1 true EP2691797B1 (de) 2019-02-20

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WO (1) WO2012134468A1 (de)

Families Citing this family (13)

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CA2930529C (en) 2013-12-27 2018-06-05 Halliburton Energy Services, Inc. Target well ranging method, apparatus, and system
AU2014398251B2 (en) 2014-06-17 2017-09-14 Halliburton Energy Services, Inc. Reluctance sensor for measuring a magnetizable structure in a subterranean environment
US10031153B2 (en) 2014-06-27 2018-07-24 Schlumberger Technology Corporation Magnetic ranging to an AC source while rotating
US10094850B2 (en) 2014-06-27 2018-10-09 Schlumberger Technology Corporation Magnetic ranging while rotating
US10273799B2 (en) 2014-08-11 2019-04-30 Halliburton Energy Services, Inc. Well ranging apparatus, systems, and methods
WO2016080947A1 (en) * 2014-11-17 2016-05-26 Halliburton Energy Services, Inc. Rapid magnetic hotspot detector
EP3359777B1 (de) 2015-12-18 2021-12-22 Halliburton Energy Services, Inc. Systeme und verfahren zur kalibrierung einer einzelteilmessung
US10767466B2 (en) 2016-02-12 2020-09-08 Halliburton Energy Services, Inc. Active ranging-while-drilling with magnetic gradiometry
FR3063766B1 (fr) 2017-03-09 2022-01-28 Pathcontrol Procede d'identification de position d'un puits par telemetrie magnetique passive
CN112922584B (zh) * 2021-01-21 2022-12-09 中海油田服务股份有限公司 一种邻井检测装置、方法及系统
CN117027764B (zh) * 2022-05-20 2024-02-09 中国石油天然气集团有限公司 钻井定位装置、方法和系统
EP4407141A1 (de) * 2023-01-25 2024-07-31 TRACTO-TECHNIK GmbH & Co. KG Gestängeschusssystem
CN115949388B (zh) * 2023-02-20 2024-05-07 四川轻化工大学 一种套管防碰测距预警方法及测量单元

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EP2691797A4 (de) 2015-11-11
EP2691797A1 (de) 2014-02-05
WO2012134468A1 (en) 2012-10-04

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