LOGGING TOOL WITH ANTENNAS HAVING EQUAL TILT ANGLES
First Claim
Patent Images
1. A downhole logging tool, comprising:
- a tool body having a longitudinal axis; and
two or more tilted antennas having equal tilt angles mounted in or on the tool body.
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Abstract
The present disclosure relates to a downhole logging tool that includes two or more tilted antennas having equal tilt angles mounted in or on the tool body. The downhole logging tool may be, for example, a wireline or while-drilling tool, and it may be an induction or propagation tool. Various symmetrized and anti-symmetrized responses may be computed and used to infer formation properties and drilling parameters.
29 Citations
20 Claims
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1. A downhole logging tool, comprising:
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a tool body having a longitudinal axis; and two or more tilted antennas having equal tilt angles mounted in or on the tool body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A downhole logging tool, comprising:
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a tool body having a longitudinal axis; two or more tilted antennas having equal tilt angles mounted in or on the tool body and spaced along the longitudinal axis, wherein at least one of the tilted antennas is a transceiver; and two or more axial antennas mounted in or on the tool body and spaced along the longitudinal axis to provide symmetrized and/or anti-symmetrized measurements when used in conjunction with the tilted antennas.
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14. A method to log a wellbore, comprising:
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providing a downhole logging tool comprising a tool body having a longitudinal axis, and two or more tilted antennas having equal tilt angles mounted in or on the tool body; and making measurements while the logging tool is in the wellbore. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification