Acoustic system for downhole applications
AssigneeSaudi Arabian Oil Company
InventorDwight W. Swett
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Abstract
Systems and a method for acoustic testing in a wellbore are provided. An exemplary acoustic source used in the acoustic testing includes an acoustic metamaterial generated from a geometrical inversion of a set of conformal contours developed from mapping of Tangent Circles, wherein the acoustic metamaterial is anistotropic with a horizontal axis (D_cell) smaller than a vertical axis (Rxy*D_cell).
Claims22
A sonic logging tool, comprising:
- an acoustic source, comprising:
- an acoustic metamaterial;
- and
- an acoustic emitter disposed in the center of the metamaterial;
- and
- an acoustic detector, comprising:
- a cross-line acoustic receiver array;
- and
- an in-line acoustic receiver array.
A method for performing sonic logging in a wellbore, comprising:
- placing a sonic logging tool in the wellbore, wherein the sonic logging tool comprises:
- an acoustic source, comprising:
- an acoustic metamaterial;
- and
- an acoustic emitter disposed in a center of the acoustic metamaterial;
- and
- an acoustic detector, comprising:
- a cross-line acoustic receiver array;
- and
- an in-line acoustic receiver array;
- and
- energizing the acoustic emitter to emit sound waves;
- emitting amplified sonic energy from the metamaterial;
- and
- detecting reflected sonic energy from materials outside the wellbore.
An acoustic source, comprising an acoustic metamaterial generated from a geometrical inversion of a set of conformal contours developed from mapping of Tangent Circles, wherein the acoustic metamaterial is anistotropic with a horizontal axis (D_cell) smaller than a vertical axis (Rxy*D_cell).
Dependencies are inferred from the claim text.