Co-located antennas
First Claim
1. A method for constructing co-located antennas on an electromagnetic logging tool for exploring an earthen formation via a borehole, comprising:
- winding a first antenna on an elongated mandrel of a tool body of the electromagnetic logging tool, the first antenna having a first magnetic dipole in a first orientation; and
winding a second antenna on the elongated mandrel through a first set of openings through the tool body, whereby the antenna extends inward and outward of the tool body, the second antenna having a second magnetic dipole in a second orientation, wherein the first orientation is different from the second orientation, and wherein a center of the first magnetic dipole substantially co-locates with a center of the second magnetic dipole.
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Abstract
Techniques for implementing antenna configurations with substantially co-located axes are disclosed. A method for constructing co-located antennas includes winding a first antenna on a support, the first antenna having a first magnetic dipole in a first orientation; and winding a second antenna on the support through a first set of openings in the support, the second antenna having a second magnetic dipole in a second orientation, wherein the first orientation is different from the second orientation, and wherein a center of the first magnetic dipole substantially co-locates with a center of the second magnetic dipole.
51 Citations
8 Claims
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1. A method for constructing co-located antennas on an electromagnetic logging tool for exploring an earthen formation via a borehole, comprising:
- winding a first antenna on an elongated mandrel of a tool body of the electromagnetic logging tool, the first antenna having a first magnetic dipole in a first orientation; and
winding a second antenna on the elongated mandrel through a first set of openings through the tool body, whereby the antenna extends inward and outward of the tool body, the second antenna having a second magnetic dipole in a second orientation, wherein the first orientation is different from the second orientation, and wherein a center of the first magnetic dipole substantially co-locates with a center of the second magnetic dipole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- winding a first antenna on an elongated mandrel of a tool body of the electromagnetic logging tool, the first antenna having a first magnetic dipole in a first orientation; and
Specification