| US 7,339,494 B2 | ||
| Acoustic telemetry transceiver | ||
| Vimal V. Shah, Sugarland, Tex. (US); Eugene J. Linyaev, Houston, Tex. (US); Donald G. Kyle, Plano, Tex. (US); Wallace R. Gardner, Houston, Tex. (US); and Jeffrey L. Moore, Houston, Tex. (US) | ||
| Assigned to Halliburton Energy Services, Inc., Houston, Tex. (US) | ||
| Filed on Jul. 26, 2004, as Appl. No. 10/898,884. | ||
| Claims priority of provisional application 60/584629, filed on Jul. 01, 2004. | ||
| Claims priority of provisional application 60/588524, filed on Jul. 16, 2004. | ||
| Prior Publication US 2006/0002232 A1, Jan. 05, 2006 | ||
| Int. Cl. G01V 3/00 (2006.01) | ||
| U.S. Cl. 340—855.7 [340/854.3; 367/81; 367/82] | 27 Claims |

| 1. An apparatus comprising:
a vibratory actuator to generate an acoustic signal that is to modulate along a mandrel of a drill string; and
a backing mass positioned adjacent to the vibratory transducer and restrained from lateral movement relative to an axis of
the drill string.
|