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DOWNHOLE MAPPING SYSTEM
申请公布号：CA2858475(A1)
申请号：CA20122858475
申请日期：2012.12.20
申请公布日期：2013.06.27
发明人：HALLUNDBAEK, JORGEN
分类号：E21B47/09;E21B47/00;G01B7/02
主分类号：E21B47/09
摘要：A downhole mapping system (100) for identifying completion components (33) having an inner surface (74) in a casing in a completion, comprising: - a magnetic sensor tool (1) having a longitudinal tool axis and comprising: - a detecting unit (2) comprising: - a first magnet (4) for generating a magnetic field, and - a first sensor (5) arranged in a first plane (7) and at a first distance (di) from the first magnet, for detecting changes in the magnetic field, the sensor (5) detecting changes in the magnitude and/or direction of the magnetic field producing measured data of a profile of the casing, wherein the downhole mapping system further comprises: - a reference database (34) comprising magnetic reference data of completion components, and - a processor (35) comparing a set of the measured data with reference data from the database (34) for identifying a substantially matching set of data representing a completion component stored in the reference database, wherein the system further comprises a component scanning unit (53) for scanning the inner surface for identifying a component and storing the data representing the component in the database.
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