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    • 9. 发明申请
    • Method for determining a stuck point for pipe, and free point logging tool
    • 用于确定管道粘滞点的方法和自由点测井工具
    • US20050240351A1
    • 2005-10-27
    • US10967588
    • 2004-10-18
    • Kevin Gray
    • Kevin Gray
    • G01V9/00
    • E21B47/0905E21B47/09E21B47/091
    • A method and apparatus for determining the location of stuck pipe are provided. In one embodiment, the method includes the step of attaching a free point logging tool to a working line such as a slickline or wireline. The free point logging tool has a freepoint sensor and, optionally, an acoustic sensor. The freepoint sensor acquires magnetic permeability data in a string of pipe, while the acoustic sensor acquires acoustic data in the pipe. Two sets of data for each sensor are acquired—one in which the pipe under investigation is unstressed, and one in which the pipe is stressed. The first set and second sets of magnetic permeability data are compared to determine the stuck point location for the pipe. The first and second sets of acoustic data are compared to determine the nature in which the pipe is stuck.
    • 提供了一种用于确定卡管的位置的方法和装置。 在一个实施例中,该方法包括将自由点测井工具附接到诸如光滑线或有线线的工作线的步骤。 自由点测井工具具有自由点传感器和可选的声学传感器。 自由点传感器获取管道中的磁导率数据,而声学传感器获取管道中的声学数据。 获取每个传感器的两组数据 - 一个是被调查的管子不受应力的管道,另一个是管道受压的数据。 比较第一组和第二组导磁率数据,以确定管道的卡住位置。 比较第一组和第二组声学数据以确定管被卡住的性质。