DOWNHOLE MAPPING SYSTEM
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United States of America Patent
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Issued Date -
Nov 13, 2014
app pub date -
Dec 20, 2012
filing date -
Dec 21, 2011
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Abstract
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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