RADAR IMAGING OF BOREHOLES
First Claim
Patent Images
1. A method of estimating a characteristic of a formation, comprising:
- disposing a radar imaging tool in a borehole;
generating a high frequency radar signal by a radar transmitter, the high frequency radar signal having a frequency configured to limit penetration of the radar signal to a near-borehole region of the formation, the near-borehole region including a surface of the borehole and a region of the borehole proximate to the surface;
detecting return signals reflected from the near-borehole region;
generating an image of the near-borehole region based on the return signals; and
estimating a characteristic of the formation based on the image.
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Abstract
A method of estimating a characteristic of a formation includes: disposing a radar imaging tool in a borehole; generating a high frequency radar signal by a radar transmitter, the high frequency radar signal having a frequency configured to limit penetration of the radar signal to a near-borehole region of the formation, the near-borehole region including a surface of the borehole and a region of the borehole proximate to the surface; detecting return signals reflected from the near-borehole region; generating an image of the near-borehole region based on the return signals; and estimating a characteristic of the formation based on the image.
11 Citations
20 Claims
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1. A method of estimating a characteristic of a formation, comprising:
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disposing a radar imaging tool in a borehole; generating a high frequency radar signal by a radar transmitter, the high frequency radar signal having a frequency configured to limit penetration of the radar signal to a near-borehole region of the formation, the near-borehole region including a surface of the borehole and a region of the borehole proximate to the surface; detecting return signals reflected from the near-borehole region; generating an image of the near-borehole region based on the return signals; and estimating a characteristic of the formation based on the image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for estimating a characteristic of a formation, comprising:
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a radar imaging tool configured to be disposed in a borehole in the formation, the imaging tool including; a radar transmitter configured to generate a high frequency radar signal having a frequency configured to limit penetration of the radar signal to a near-borehole region of the formation, the near-borehole region including a surface of the borehole and a region of the borehole proximate to the surface; and a receiver configured to detect return signals reflected from the near-borehole region; and a processor configured to generate an image of the near-borehole region based on the return signals, and estimate a characteristic of the formation based on the image. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification