<p>One embodiment includes an apparatus that includes a piezoelectric transducer to generate an acoustic signal that is to modulate along a mandrel, wherein the piezoelectric transducer includes at least one piezoelectric element and at least one electrode that is without non-permanent joints.</p>
申请公布号
AU2005262362(B2)
申请公布日期
2009.11.05
申请号
AU20050262362
申请日期
2005.07.01
申请人
HALLIBURTON ENERGY SERVICES, INC.
发明人
JEFFREY, L. MOORE;EUGENE, J. LINYAEV;WALLACE, R. GARDNER;DONALD, G. KYLE;VIMAL, V. SHAH