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    • 12. 发明申请
    • Magnetic Location Determination in a Wellbore
    • 井眼中的磁位置测定
    • US20160032712A1
    • 2016-02-04
    • US14647055
    • 2013-12-31
    • Halliburton Energy Services, Inc.
    • Thomas J. FrosellMichael L. FrippZachary R. Murphree
    • E21B47/09G01V3/26
    • E21B47/0905G01V3/26
    • A magnetic system for determining the location of a wellbore component in a first string relative to a wellbore component in a second string. The system includes a circumferentially distributed array of magnets positioned in the first string that is operable to produce a magnetic field in the wellbore proximate the location of the array of magnets. A magnetic field detector is operably associated with the second string and is operable to detect a magnetic signature of the magnetic field. One of the first and second strings is stationary within the wellbore. The other of the first and second strings is moveable in the wellbore such that the magnetic field detector is moveable relative to the magnetic field and such that when the magnetic field detector identifies the magnetic signature, the location of the array of magnets is correlated with the magnetic field detector.
    • 一种用于确定第一串中的井筒部件相对于第二串中的井筒部件的位置的磁系统。 该系统包括位于第一串中的周向分布的磁体阵列,其可操作以在靠近磁体阵列的位置的井眼中产生磁场。 磁场检测器与第二串可操作地相关联并且可操作以检测磁场的磁特征。 第一和第二弦之一在井眼内是静止的。 第一和第二串中的另一个可在井眼中移动,使得磁场检测器相对于磁场可移动,并且使得当磁场检测器识别磁性特征时,磁体阵列的位置与 磁场检测器