| 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. |
| 主权项 |
1. A downhole mapping system for identifying completion components having an inner surface in a casing in a completion, comprising:
a magnetic sensor tool having a longitudinal tool axis and comprising:
a detecting unit comprising:
a first magnet for generating a magnetic field, anda first sensor arranged in a first plane and at a first distance (d1)from the first magnet, for detecting changes in the magnetic field, the sensor 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 comprising magnetic reference data of completion components, and a processor comparing a set of the measured data with reference data from the database 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 for scanning the inner surface for identifying a component and storing the data representing the component in the database. |
